EP2047322A1

EP2047322A1 - Device and method for determining a wearing position of a pair of glasses, and computer program device

Info

Publication number: EP2047322A1
Application number: EP07785907A
Authority: EP
Inventors: Rainer Sessner; Werner Müller
Original assignee: Rodenstock GmbH
Current assignee: Rodenstock GmbH
Priority date: 2006-07-19
Filing date: 2007-07-05
Publication date: 2009-04-15
Also published as: WO2008009355A1; DE102006033491A1

Abstract

The invention relates to a device (10) for determining a position of a pair of glasses (38) and/or at least one spectacle lens in relation to the centre of the pupil of a corresponding eye of a wearer (30) in the zero line of sight. Said device comprises at least two image capturing devices (14, 16) which are designed and arranged to produce comparison image data of at least part of the head of a wearer in the absence of the pair of glasses (38) and/or in the absence of at least one spectacle lens (50) and at least part of an auxiliary structure (53) and to produce image data of an essentially identical part of the head of a wearer with a pair glasses (38) and/or at least one spectacle lens (50) and at least the part of the auxiliary structure (53), a data processing device that is configured to determine, using the image data, the comparison image data and at least part of the auxiliary structure (53), the position of the glasses (38) and/or the at least one spectacle lens (50) in relation to the centre of the pupil of the corresponding eye of the wearer (30) in the zero line of sight, and a data output device that is designed to output the position of the pair of glasses (38) and/or at least one spectacle lens (50) in relation to the centre of the pupil of the corresponding eye of the wearer (30) in the zero line of sight. The invention also relates to an additional device, a corresponding method and a computer program device.

Description

description

The present invention relates to a device for determining and / or checking a position of spectacles and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user, a method and a computer program device for carrying out the method.

State of the art

The introduction of individually optimized spectacle lenses makes it possible to respond to the needs of people with visual defects and to provide, for example, spectacle lenses with individually optimized viewing areas. Individually adapted spectacle lenses allow optimal correction of optical vision defects of a user of the lenses. An individual calculation and adjustment of eyeglass lenses is also possible for sports eyewear, which are characterized by large deflections, frame and pre-tilt angle.

In order to fully exploit the optical advantages of individual spectacle lenses, in particular individually adapted progressive lenses, it is necessary to calculate and manufacture these spectacles with knowledge of the position of use of the user and to wear in accordance with the position of use used for the calculation and production. The position of use is dependent on a variety of parameters, such as the pupil distance of the user, the frame disc angle, the lens tilt, the spectacle frame, the corneal vertex distance of the system of spectacle lens and eye or Pupillenmitte at a viewing direction of the eye in the zero direction and the Einschleifhöhe the lenses. These and other parameters, which can be used to describe the position of use, or are necessary, are contained in relevant standards, such as DIN EN ISO 1366, DIN 58 208, DIN EN ISO 8624 and DIN 5340 and can this be removed. Furthermore, it is necessary that the spectacle lenses are arranged in a spectacle frame in accordance with the optical parameters used for the manufacture, so that the spectacle lenses are actually carried in the position of use in accordance with the optical parameters.

To determine the individual optical parameters, the optician has a variety of measuring instruments available. For example, the optician can evaluate pupillary reflexes with a so-called pupillometer or determine the distance of the pupil centers in order to determine the pupil distance in this way.

Pretank angle and corneal vertex distance can be determined, for example, with a measuring device, in which the habitual head and body posture of the customer, the meter is held on a socket level of a spectacle frame. The pre-tilt angle can be read off the side of a gravity-driven pointer using a scale. To determine the corneal vertex distance, an engraved ruler is used, with which the distance between the estimated groove bottom of the spectacle frame and the cornea is also measured from the side.

The frame angle of the spectacle frame can be determined, for example, with a meter on which the glasses are placed. The nasal edge of a disc must be arranged above a pivot point of a movable measuring arm, wherein the other disc is parallel to an engraved line. The measuring arm is adjusted so that a marked axis of the measuring arm is parallel to the frame level of the disc arranged above it. The socket angle can then be read on a scale. If the respective optical parameters have been properly determined and a spectacle lens has been individually manufactured according to these parameters, it is still necessary to grind the spectacle lens into a spectacle frame. When grinding the spectacle lens into the spectacle frame, errors or inaccuracies can occur and / or the spectacle frame can be bent. If necessary, errors in the grinding in of the spectacle lens could, for example, be at least partially corrected by repositioning the spectacle frame in front of the eye. A check of the actual positioning of each spectacle lens, in particular in front of the corresponding eye (s) of the user, is possible, if at all, exclusively manually. Furthermore, such a review is very inaccurate. In other words, by means of conventional methods or devices, a quality control of a pair of manufactured spectacles, in particular only manually, is possible, whereby such quality control is regularly inaccurate.

Object of the invention

It is an object of the invention to provide a possibility to easily check the position of a pair of spectacles and / or a spectacle lens in front of the eyes or the eye corresponding to at least one spectacle lens.

This object is achieved by the device according to claim 1, the device according to claim 31, the method according to claim 32 and the computer program device according to claim 45. Preferred embodiments or variants are subject-matter of the dependent claims.

definitions

Before the following detailed description of the invention, terms will be defined that will assist in understanding the invention. An "auxiliary structure" in the sense of the present invention may be an artificial structure arranged, for example, on a head, in particular on a face. The auxiliary structure may also include the entire face, part of the face, part of the head, the shape of the head, the position of characteristic components of the head or face, such as the ears, nose, pigments, a birthmark, freckles, or both eyebrows etc. The auxiliary structure may also include one or more stickers which are glued to the head or to the face.

An "eye corresponding to a spectacle lens" in the sense of this invention is the eye of a user of the spectacle lens, i. the eye of the spectacle wearer, in front of which the spectacle lens is placed. In other words, the eye corresponding to the spectacle lens is the eye of the spectacle wearer, with whom he looks through the spectacle lens. The right lens corresponds to the right eye and the left lens corresponds to the left eye of the wearer. Glasses of a spectacle wearer thus correspond to both eyes.

Eyeglass lenses are, for example, single-vision lenses, multi-vision lenses, for example progressive lenses, with or without tinting, mirroring and / or polarization filters.

The term "determine" in the sense of this invention includes, for example, "calculate", "read from a table", "remove from a database", etc.

In particular, the position of a spectacle lens relative to a pupil center contains all the information necessary to indicate the arrangement of the spectacle lens relative to the pupil center, such as pretilt of the spectacle lens, position of a disc plane relative to the pupil center and in particular also relative to the zero direction, position of optical particular relevant areas, such as near reference point or range, far reference point or range, etc., position of center point, astigmatism axis, etc. "Characteristic points" of a spectacle lens are, for example, points which make the alignment or the arrangement of the spectacle lens unambiguously determinable. For example, characteristic points may be engraving points of the spectacle lens or reference points of the spectacle lens. In particular, two-dimensional, flat structures, such as circles, crosses, etc., can be characteristic points.

"Engraving points" are in particular those points which allow a determination of the optical properties in a unique manner. For example, the relative position of near reference point, far reference point, umbilical line, etc. with respect to a centering point is known as a preferred engraving point. A spectacle lens may have one or more characteristic points, and consequently one or more characteristic points may be represented by the means of representation (s). Furthermore, engraved dots are formed so as to be transparent to the naked eye, i. without further optical aids, are essentially not visible.

For example, engraving points may include two or more product-specific micro-engravings, such as e.g. Circle (s), diamond (s), etc., be, which are arranged in particular at a standardized distance from each other, for example, at a distance of about 34 mm. These engraving points are called "main engravings". Furthermore, engraving points, in particular micro engravings, can define a glass horizontal. The center between the two engraving points is at the same time the origin of coordinates (also referred to below as "zero point") for the further measuring and reference points if stamped glass-specific markings of the spectacle lens are missing.

Immediately below the "main engravings", the engraving of the addition and nasally an index for base curve and refractive index of the glass can be located temporally.

Furthermore, another engraving point may be a trademark, such as in Shape of a letter, etc., which may be located about 13 mm below the "main engraving" or the engraving of the addition and the index for base curve and refractive index of the glass.

A "means of representation" in the sense of this invention may be a sticker, a dot, in particular a drawn point or circle or other two-dimensional object and / or a three-dimensional object. A presentation means may also comprise a plurality of stickers and / or comprise dots, in particular drawn dots or circles or other two-dimensional objects and / or three-dimensional objects. A presentation means differs in particular from an auxiliary structure in that the presentation means is associated with a spectacle lens, for example, in that the presentation means comprises a sticker which is glued onto the spectacle lens. The auxiliary structure is associated with the head or face of a user, for example, by the auxiliary structure comprising a sticker which is glued to the face.

In particular, a spectacle lens can have one or more characteristic points, which can be represented by one or more representation means. For example, one or more engraving points may be represented by one or more presentation means. The presentation means may be, for example, a sticker which is arranged such that the position of one or more engraving points relative to the sticker can be determined uniquely. For example, a sticker may cover two (or three) engraved dots, and at the location overlying the engraving dots, for example, the sticker may be colored, the color being different from the remaining color of the sticker. For example, the sticker may have a white base color or be transparent, and at positions superimposed on the two (or three) engraving dots, the sticker may have at least one black dot or circle, that is, the sticker may have two (or three ) have black dots or circles or two (or three) saddle points. Furthermore, a display means may comprise one or more stamped markings, such as two stamped circular arcs of the form "()", in the middle of which, for example, the distance reference point BF of a spectacle lens can be located. The circular arcs may be arranged such that the far reference point is about 8 mm above the zero point (see above). Two horizontal lines to the right and left of it are auxiliary markers for aligning the horizontal lights when checking the cylinder axis.

Furthermore, a stamped marking may comprise a remote centering cross, which is located about 4 mm above the zero point (see above). The remote centering is the fitting cross for the exact centering of the glass in front of the eye or the socket.

The "horizontal glases" (see above) may each comprise two horizontal broken lines temporal / nasal. Preferably, a specific product engraving in the form of one or more circles or diamonds is arranged between the lines.

In addition, a stamped marking may include a prism reference point Bp, which preferably coincides with the zero point (see above).

The stamped mark may also include a circle around the near reference point BN. The near reference point, i. the center of the circle may be offset by about 14 mm down and about 25 mm nasally from the origin. By way of example, this is a measuring auxiliary point in order, if necessary, to be able to check the proximity at the vertex-value measuring device (also referred to as "SBM"). The real lateral offset of the near-vision point may differ depending on the variable inset.

Furthermore, the stamped markings further or additional

Have markings, for example, a schematic eye to mark in particular the remote reference point, plus and minus signs, points to the Mark near reference point, etc.

Two recording devices in the sense of the invention are, for example, two digital cameras, which are positioned separately from one another. It is possible that an image pickup device preferably comprises a digital camera and at least one optical deflection element or mirror, image data of a partial region of a head being recorded or generated by the camera by means of the deflection mirror. Two image recording devices therefore include in the same way, for example, two in particular digital cameras and at least two deflecting elements or mirrors, each representing a digital camera and at least one deflection mirror an image pickup device. Furthermore, two image recording devices can also consist of exactly one digital camera and two deflecting elements or mirrors, with image data being recorded or generated with a time offset by means of the digital camera. For example, image data is generated at a first point in time, wherein a partial area of a head is imaged by means of the one deflection mirror, and at a second time point generates image data which images the partial area of the head by means of the other deflection level. Furthermore, the camera can also be arranged in such a way that image data are generated by the camera at the first and the second time, wherein no deflection mirror is necessary or arranged between the camera and the head.

In the sense of the present invention, two different or different picking directions mean that different image data are generated from overlapping partial areas of the head, preferably from one and the same partial area of the head, in particular that image data or comparison image data of identical partial areas of the user's head are generated under different perspective views. Consequently, although the same portion of the head is displayed, the image data and comparison image data, however, are different. Different recording directions can also be achieved, for example, by generating the image data from at least two image recording devices, wherein effective optical axes of the at least two image pickup devices are not parallel.

For the purposes of this invention, dimensioning in box size is understood to mean the measuring system as described in the relevant standards, for example in DIN EN ISO 8624 and / or DIN EN ISO 1366 DIN and / or DIN 58 208 and / or DIN 5340, is described. Further, with regard to the case size and other conventional terms and parameters used, the book "The Optics of the Eye and the Visual Aids" by Dr. Ing. Roland Enders, 1995 Optical Publishing GmbH, Heidelberg, and the book "Optics and Technology of the Glasses" by Heinz Diepes and Ralf Blendowske, 2002 Publisher Optical Publications GmbH, Heidelberg, referenced. Likewise, reference is also made to the brochure "Inform expert consultation for the optics" PR series of ZVA for the optician, Issue 9, "Brillenzentrierung", ISBN 3-922269-23-0, 1998, in which the Kastenmaß particular in Figures 5 and 6 is shown by way of example. Furthermore, reference is also made to the book "Eyewear Adaptation A Textbook and Guideline" by Wolfgang Schulz and Johannes Eber 1997, DOZ-Verlag, published by the Zentralverband der Augenoptiker, Dusseldorf, ISBN 3-922269-21-4, in particular points 1.3, 1.4. and 1.5 and the accompanying figures. The standards, the said booklet and the said books constitute an integral part of the disclosure of the present application for the definitions of terms.

The limitation to a dimension in the box dimension includes, for example, sizing points for an eye or both eyes, which are farthest out or inside and / or up or down. These detection points are conventionally determined by tangents to the spectacle frame or the respective areas of the spectacle frame assigned to the respective eyes (compare DIN 58 208, Figure 3).

In particular, the box size is a lens describing a lens

Rectangle in the disk plane. According to the above-mentioned standards, to determine the slice plane mathematically from a plane with the Normal vector of the cross product of center parallel / horizontal of the box. As an approximation, the slice plane normal can be determined from the cross product of the vector between the nasal point and the temporal point and the vector between the top and bottom points of the rim of the glass. Advantageously, the pretilt and the mounting disk angle best correspond to the view through situation here.

The "breakpoint" for the slice plane is approximated as follows: starting point is the center of the vector between the top and bottom points. It is then followed horizontally along the vector between the nasal point and the temporal point in the center of the slice (approximated by the x coordinate). The cross product of the vector between the centers of the slice planes of both sides and the mean of the two vectors of upper and lower frame points determines the normal of the frame plane. Breakpoint is one of the disk centers.

The box dimension is determined as a vertical projection of the disc edge on the disc plane. The frame angle can now be determined even for each side as the angle between the respective disc plane and the socket level.

In other words, the normal of the slice plane from the cross product of the vector between the nasal and the temporal intersection of a horizontal plane through the straight line of the zero direction with the respective edge of the glass to the frame and the vector between the upper and the lower intersection of a vertical plane through the Just zero sight direction with the respective edge of the glass to determine the version.

The "pupil distance" essentially corresponds to the distance of the pupil centers, in particular in the zero viewing direction.

The "zero sighting direction" in the sense of this invention is a viewing direction straight ahead with parallel fixing lines. In other words, it is a viewing direction defined by a position of the eye relative to the head of the user, the eyes looking at an object that is at eye level and located at an infinitely distant point. Consequently, the zero-sighting direction in the sense of this invention is determined only by the position of the eyes relative to the head of the user. When the user's head is in a normal upright posture, the zero direction of view is substantially the horizontal direction in the reference frame of the earth. The zero-sighting direction, however, may be tilted to the horizontal direction in the reference frame of the earth, for example, if the user tilts his head forward or sideways without further movement of the eyes. Analogously, a plane is spanned by the zero direction of both eyes, which is in the frame of reference of the earth substantially parallel to the horizontal plane. The plane spanned by the two null directions of the two eyes may also be inclined to the horizontal plane in the frame of reference of the earth, for example, if the user tilts the head forward or to the side.

Preferably, the horizontal plane of the user corresponds to a first plane and the vertical plane of the user corresponds to a second plane which is perpendicular to the first plane. For example, the horizontal plane in the user's frame of reference may be parallel to a horizontal plane in the frame of reference of the earth and may pass only through the center of a pupil. This is the case in particular if the two eyes of the user are arranged, for example, at different heights (in the frame of reference of the earth).

The eye pivot point of an eye is the point of the eye that is at a

Movement of the eye, with a fixed head posture, for example one

Lightening or eye lifting by rotation of the eye remains essentially at rest. The eye pivot is thus essentially the center of rotation of the

Eye. For the purposes of this invention, effective optical axes of the image recording devices are those regions of lines which emanate from the center of the respective apertures of the image recording devices perpendicular to these apertures and intersect the imaged partial region of the user's head. In other words, the effective optical axes are, in particular, the optical axes of the image recording devices, these optical axes being conventionally arranged perpendicular to a lens system of the image recording devices and starting from the center of the lens system. If there are no further optical elements in the beam path of the image recording devices, such as deflecting mirrors or prisms, the effective optical axis essentially corresponds to the optical axis of the image recording device. However, if further optical elements, for example one or more deflecting mirrors, are arranged in the beam path of the image recording device, the effective optical axis no longer corresponds to the optical axis of the image recording device, as emanates from the image recording device.

In other words, for the purposes of this invention, the effective optical axis is that region of an optionally multiply optically deflected optical axis of an image recording device which intersects the user's head without changing the direction. The optical axis of the image pickup device corresponds to a line extending from a center of an aperture of the image pickup device at a right angle to a plane including the aperture of the image pickup device, wherein the optical axis direction of the image pickup device is controlled by optical elements such as mirrors and / or prisms, is changeable.

The term "nearly cut" in the sense of this invention means that the effective optical axes have a minimum distance of less than about 10 cm, preferably less than about 5 cm, more preferably less than about 1 cm. Cutting at least almost means therefore that the effective

Cut axes or almost intersect. The pattern projection device is, for example, a conventional projector such as a commercially available projector. The projected pattern data is, for example, a stripe pattern or a binary sine pattern. The pattern data is projected onto at least a portion of the user's head, and image data and / or comparison image data are generated therefrom by means of the image recording device. From the thus illuminated portion of the head of the user image data and / or comparison image data are generated at a triangulation angle of the image pickup device. The triangulation angle corresponds to the angle between an effective optical axis of the image pickup device and a projection angle of the pattern projection device. Height differences of the portion of the head correspond to lateral displacements of, for example, the stripes of the stripe pattern as preferred pattern data. Preferably, in the phase-measuring Triangualtion the so-called phase-shift method is used, wherein on part of the head periodic, in the intensity distribution approximately sinusoidal wave pattern is projected and the wave pattern moves stepwise in the projector. During the movement of the wave pattern, image data and / or comparison image data are preferably generated from the intensity distribution (and the partial area of the head) during a period at least three times. The intensity distribution can be deduced from the generated image data and / or comparison image data, and a phase angle of the pixels relative to one another can be determined, wherein points on the surface of the subregion of the head are assigned to a specific phase position in accordance with their distance from the image recording device. Furthermore, reference is made to the approval work entitled "Phase-Measuring Deflectometry (PMD) - A High-Precision Method for Measuring Surfaces" by Rainer Seßner, March 2000, which represents an integral part of the disclosure of this application for further definitions of terms. Apparatus according to one aspect of the invention according to independent claim 1

According to one aspect of the invention, an apparatus according to the invention for determining a position of a pair of spectacles and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user in the zero viewing direction

at least two image recording devices, which are each designed and arranged,

To create comparison image data of at least a portion of the user's head in the absence of spectacles and / or in the absence of the at least one spectacle lens and at least a portion of an auxiliary structure, and

To generate image data of a substantially identical subarea of the user's head with spectacles arranged thereon and / or at least one spectacle lens arranged thereon with spectacle lenses and at least the subarea of the auxiliary structure;

- A data processing device which is designed based on the image data, based on the comparison image data and based on at least the subregion of the auxiliary structure, the position of the spectacles and / or the at least one spectacle lens relative to the pupil center of the corresponding

Eye of the user in the zero direction to determine and

a data output device which is designed to determine the position of the spectacles and / or of the at least one spectacle lens relative to the pupil center of the corresponding eye of the user in FIG

To output zero sight direction. According to the invention, therefore, a relation of a position of at least one spectacle lens relative to the corresponding pupil can be generated and output, even if a correct image of the pupil (s), in particular the middle of the pupil (s) or the position of the pupil center (s), passes through the spectacle lens. by means of the at least two image recording devices, for example due to optical properties and / or tinting and / or mirroring and / or polarization etc. of the at least one spectacle lens is not perfectly possible.

Preferred embodiments of the invention, in particular according to the dependent claims

Preferably, the at least two image pickup devices are arranged and configured to generate the image data under at least two different pickup directions and to generate the comparison image data under at least two different pickup directions.

Preferably, the image recording devices are each designed and arranged to image the auxiliary structure in the generated image data such that at least a portion of the auxiliary structure is not imaged through the at least one spectacle lens or through both spectacle lenses.

In other words, the image recording devices and / or the auxiliary structure are arranged such that at least a subregion of the auxiliary structure can be imaged by the image recording device without optical change, for example due to the optical properties of the spectacle lenses.

Particularly preferably, the auxiliary structure comprises, for example, three points or other two-dimensional structures, etc., and the three points or circles etc. are each at least partially imaged in the image data and the comparison image data. Furthermore, the data processing device is preferably designed to compare actually measured individual parameters of a use position of the at least one spectacle lens in the system of the spectacle lens and eye of the user of the at least one spectacle lens with predetermined individual parameters of the position of use of the at least one spectacle lens in the system spectacle lens and eye of the user.

In the system of spectacle lens and eye, the position of the spectacle lens is specified or determined, in particular, with respect to the pupil center of the corresponding eye in the zero viewing direction. Alternatively, the position of the spectacle lens, in particular with respect to the eye pivot point of the corresponding eye, can be specified or determined in the system spectacle lens and eye. More preferably, the data processing device is designed to compare actually measured individual parameters of a use position of the glasses in the system glasses and head of the user of the glasses with predetermined individual parameters of the use position of the glasses in the system glasses and head of the user of the glasses.

Furthermore, the image recording devices are preferably designed and arranged such that in the generated comparison image data of the at least one

Part of the head without glasses arranged thereon and / or at least one spectacle lens arranged thereon at least one pupil or a

Pupillenmitte the corresponding eye of the user and at least one

Part of the auxiliary structure, for example, an auxiliary point is shown. Particularly preferably, the pupil, in particular the middle of the pupil and the auxiliary structure, are substantially completely imaged.

Preferably, the image recording devices are designed and arranged in such a way that at least one region of the spectacles and / or at least one subregion of the at least one spectacle lens and in the generated image data of the at least one subregion of the head with spectacles arranged thereon and / or at least one spectacle lens arranged thereon the subarea of the auxiliary structure is shown. Particularly preferably, the auxiliary structure or the auxiliary point is shown substantially completely.

The same applies analogously for both lenses.

It is particularly preferred that the subregion depicted in the image data is

Auxiliary structure identical to the portion of the auxiliary structure shown in the comparison image data.

Since a pair of custom glasses regularly has lenses, through this a correct mapping of the pupils of the eyes or a correct determination of the position of the pupils, in particular the pupil centers is not possible, it is still advantageously possible according to the invention a precise position of a pair of glasses or a spectacle frame relative to the pupil or the pupil center (in the zero-viewing direction) of an eye or the pupils of the eyes of the user. This is achieved by, on the one hand, determining the position of a pupil or of a pupil center relative to a subregion of the auxiliary structure and, on the other hand, determining the position of the spectacles relative to the subregion of the auxiliary structure. The subregion of the auxiliary structure is in this case arranged such that the subregion of the auxiliary structure can be imaged by the image recording device (s) without the image passing through a spectacle lens.

+ Preferably, the at least two image recording devices are each designed and arranged in the image data at least the part of the head of the user with arranged thereon glasses and / or it arranged at least image a lens and at least image a display _means, said display means is adapted and arranged , at least one characteristic point, preferably two characteristic points, particularly preferably three characteristic points of the at least one

Spectacle lens. Engraving points are, as stated above, regularly arranged on the lens such that they are not visible without further aids, ie with the unaided eye. Consequently, engraving points are not or only poorly imaged by an image pickup device. On the basis of the means of representation, which may be for example a monochrome or multicolored sticker, it is advantageously possible to represent a engraving point. Alternatively, the engraving point can also be represented by a marked marking, for example a point or a cross. In particular, instead of a sticker this label can be attached with a suitable pen. Furthermore, one or more imaging means may be arranged both in color on the spectacle lens, for example by manual recording and / or by automatic marking, and one or more decals may be arranged on the lens.

Particularly preferably, the at least one display means is designed to represent 2, 3 or more engraving points.

Preferably, the at least two image recording devices are each designed and arranged to image in the image data at least the partial area of the user's head with spectacles arranged thereon with a first spectacle lens and a second spectacle lens and to image at least one first presentation means and at least one second presentation means first display means is designed and arranged to represent at least one characteristic point of the first spectacle lens and the second presentation means is designed and arranged to represent at least one characteristic point of the second spectacle lens.

Preferably, two characteristic points of the first spectacle lens and two characteristic points of the second spectacle lens are shown.

Particularly preferred are three characteristic points of the first Spectacle lens and three characteristic points of the second spectacle lens shown. Advantageously, the position of any spectacle lenses, for example mirrored, tinted and / or polarized spectacle lenses can be determined.

Further advantageously, three-dimensional data of the spectacles or of partial regions of the spectacles or of partial regions of the first and / or the second spectacle lens are preferably generated with the aid of the present device. The three-dimensional data is determined by means of the image data. The image data generated by a first image pickup device is different from the image data generated by a second image pickup device. The differences in the image data arise in particular in that the two image recording devices are preferably arranged at different positions. Due to the preferably different positions of the at least two image recording devices, the respective image data are generated under different perspective views of the spectacles or of the partial region of the spectacles or the partial region of the first and / or second spectacle lenses. On the basis of the different perspective views or the different image data of the spectacles or of the partial area of the first and / or the second spectacle lens generated thereby, with knowledge of the positions of the cameras relative to one another, for predetermined or predeterminable points Glasses or the first and / or the second spectacle lens coordinates are determined in three-dimensional space.

Advantageously, parallax errors, as can occur with conventional measuring methods, for example with a pupillary distance measuring rod, are therefore avoided.

Preferably, the data processing device is designed to determine a position of at least one spectacle lens relative to the spectacle frame on the basis of the image data of at least the partial region of the user's head. In this case, the glasses are shown in the image data, wherein one or both lenses may be shown.

It is particularly preferred for the data processing device to be designed to determine a position of each spectacle lens relative to the spectacle frame on the basis of the image data of at least the partial area of the user's head.

Thus, advantageously, the position of a spectacle lens or both lenses can be determined relative to the spectacle frame.

Furthermore, the data processing device is preferably designed to use the image data to determine the position of each characteristic point of a spectacle lens or the position of each characteristic point of both spectacle lenses in the box dimension of the corresponding spectacle lens.

For example, an actual position of each characteristic point can thus be compared with a set position of each characteristic point.

Preferably, the data processing device is designed to determine actual centering data of the respective spectacle lens relative to the spectacle frame on the basis of the image data, in particular based on the position of each characteristic point of each spectacle lens in the reference system of the box dimension of the corresponding spectacle lens.

In other words, the data processing device makes it possible to determine the position, for example, of the centering points or reference points in the box dimension of the spectacle lens. In particular, the actual centering data are determined by the correlation of the presentation means (s) with the engraving or reference points or the glass center to the box dimension. In particular, the position of the spectacle lens in the frame of reference of the spectacle lens can be determined by means of the data processing device on the basis of the image data become. In other words, the data processing device can be designed to determine the position of the characteristic point (s), ie, for example, of the engraving point (s) or centering point (e) in box size. Based on the known position of the at least one engraving point relative to the at least one centering point, the position of the centering point can be determined in box size.

+ Further preferably, the presentation means is designed to represent engraving points of the spectacle lens.

The data processing device is particularly preferably designed to determine a deviation of the specific, actual centering data of each spectacle lens from predetermined theoretical centering data, wherein the predefined theoretical centering data are those centering data on the basis of which the corresponding spectacle lens is arranged in the spectacle frame. That is, the theoretical Zentrierdaten represent the default for grinding the lens.

In other words, the spectacle lens is manufactured in accordance with predefined parameters and ground into the socket in accordance with predetermined, theoretical centering data. The actual position of the lens in the socket may differ from the theoretically desired position. The

Data processing device is preferably designed to detect such a deviation.

Preferably, the data processing device is designed to determine the position of at least one partial area of the auxiliary structure relative to at least one pupil or at least one pupil center point in the zero-viewing direction in three-dimensional space, the position of the spectacles in three-dimensional space and / or the position of the at least one spectacle lens relative to at least to determine this subregion of the auxiliary structure and from it in three-dimensional space the position of the spectacles and / or the position of the at least one spectacle lens relative to determine the at least one pupil or to the at least one pupil center. Preferably, in three-dimensional space, the position of the spectacles relative to the center of at least one pupil is determined.

Advantageously, for each spectacle lens, the position relative to the corresponding eye, i. be determined relative to the pupil center of the corresponding eye in the zero viewing direction or relative to the eye pivot point.

Preferably, the auxiliary structure is at least one auxiliary point with a planar extension, for example a sticker which, for example, has the design of a conventional saddle point. For example, the sticker may be attached to the face of a user next to the glasses. The auxiliary structure may also comprise a plurality of auxiliary points, in particular a plurality of stickers. In the following, the terms "auxiliary point" and "auxiliary structure" are used synonymously. An auxiliary structure or an auxiliary point can in particular be a two-dimensional structure, such as a circle. In an analogous manner, the terms "presentation means" and "representation point" can be used synonymously, wherein a means of representation or a representation point may in particular be a two-dimensional entity, such as a circle.

In other words, the / the auxiliary point (s) located on the face is measured in a first shot together with the pupil position. In a second recording, the parameters of the spectacles or of the first and / or the second spectacle lens are measured in relation to / to the auxiliary point (s).

This can be used in a subsequent evaluation, the parameters of

Determine glasses or the first and / or the second lens in relation to the eye or the eyes. This can e.g. by a coordinate transformation of the markings, in particular the auxiliary points of a recording on the

Help points, especially the markings of the other recording happen. Advantageously, three-dimensional data of the partial region of the head or of the system of the at least one spectacle lens and of the corresponding eye or both spectacle lenses and the corresponding eyes are preferably generated on the basis of the present device. The three-dimensional data is determined by means of the image data. The image data generated by a first image pickup device is different from the image data generated by a second image pickup device. The differences in the image data arise in particular in that the two image recording devices are preferably arranged at different positions. Due to the preferably different positions of the at least two image recording devices, the respective image data are generated under different perspective views of the head or the partial region of the head. With reference to the various perspective views or the different image data of the partial area of the head generated thereby, knowing the positions of the cameras relative to one another, for predetermined or predeterminable points on the head of the user or on the system of the at least one spectacle lens and the corresponding Eye coordinates are determined in three-dimensional space. The above applies analogously to the comparison image data.

Advantageously, a representation of at least the partial region of the head or at least a subregion of the system of the at least one spectacle lens and the corresponding eye of the user arranged in the use position at least one spectacle lens of the user determined by means of two-dimensional image data, wherein in the representation of at least one Auxiliary point is mapped. On the basis of this three-dimensional representation, location relations in the three-dimensional space of the user data relative to one another can be determined in a simple manner and the optical parameters of the user can be determined therefrom.

In particular, a plurality of optical information required for describing the position of use of a pair of spectacles or spectacle lenses can advantageously be used Parameters of the user can be precisely and easily determined without it being necessary to image the pupil or pupils of the user through spectacle lenses. This is for example advantageous if the lenses do not allow precise imaging due to their optical effect, in particular allow no precise determination of the position, or the lenses are tinted and the pupils or pupil centers are bad or no longer visible.

This is achieved by determining in the comparison image data, which are generated in the same way as the image data, a position of the auxiliary point relative to a pupil or both pupils in three-dimensional space. In the image data in which the pupil is not visible, for example, optical parameters relative to the auxiliary point can be determined, and based on the known position of the auxiliary point relative to the pupil, the optical parameters relative to the pupil can be determined or calculated. This applies analogously for two or more auxiliary points as well as for both pupils.

Preferably, comparison image data of largely overlapping subareas, in particular of the same subarea of the user's head, are also generated by the two image recording devices, wherein the image recording devices are designed and arranged such that at least one pupil of the user is completely imaged in the generated comparison image data. Furthermore, only the generated comparison image data is used to determine the user data in which a pupil of the user is completely mapped. In particular, in the comparison image data generated by the two or more image pickup devices, one and the same pupil of the user is fully mapped and one and the same helper point is completely mapped. Furthermore, in each case both pupils of the user and, for example, two or more auxiliary points can be imaged in the comparison image data of the two image recording devices.

Likewise, in the image data, the spectacles and / or the spectacle frame and / or a pupil-detecting edge and / or a spectacle-lens edge and a or several auxiliary points are shown.

Preferably, the data processing device further comprises a user data determination device which is designed to use the generated image data and the comparison image data user data at least a portion of the head or at least a portion of a system of the head and at least one of the user and / or the system disposed therein in use position glasses Spectacle lens and a corresponding eye, the user data comprising location information in the three-dimensional space of predetermined points of the subarea of the head or of the subarea of the system, in particular location information for at least one of the following points:

Intersecting points of a horizontal plane in the reference frame of the user with the spectacle lens edges and / or the eyeglass detection edges of the spectacles, wherein the user's horizontal plane intersects both pupils of the user and is parallel to the user's zero viewing direction, the position of the pupils being determined by the position of the at least one Part of the auxiliary structure is determined;

Intersecting points of a vertical plane in the reference frame of the user with the spectacle lens edges and / or the eyeglass detection edges of the spectacles, the vertical plane of the user being perpendicular to the user's horizontal plane and parallel to the user's zero viewing direction and intersecting a pupil of the user; Position of the pupil is determined by the position of the at least a portion of the auxiliary structure;

Limitations of at least one spectacle lens of the user after dimensioning in box size;

- Bridge center of the spectacle frame of the glasses. Preferably, the data processing device further comprises a parameter determination device for determining optical parameters, wherein the optical parameters comprise at least one of the following values of the user:

- pupillary distance;

- Monocular pupillary distance;

- corneal vertex distance according to reference point requirement and / or after eye pivot point requirement;

- monocular centering point distance;

- Center point coordinates;

- disc distance;

- Decentration of the centering point; - disc height and width;

- disc center distance;

- spectacle lens tilt;

- frame angle;

- grinding height.

Furthermore, the optical parameters preferably further comprise an eye rotation point of an eye and / or parameters on the basis of which a dynamic visual behavior of a user can be determined, such as, for example, convergence of an eye position and / or gaze deflection.

+ The optical parameters particularly preferably include physiological and anatomical parameters of a spectacle wearer, assessment-specific properties and features of a system ophthalmic lens-eye of the user, which is described, for example, in DIN 58208. The features of the eyeglass-eye system of the user can be used, for example, for the calculation of spectacle lenses and for the exact centering of spectacle lenses, centering data according to the cited standards exactly with respect to a disc or a Be determined. The slice plane here is the plane through a horizontal and vertical (in the reference frame of the earth) center line in the right and left caste system in the spectacle frame. The socket plane is the plane through mutually vertical center lines of the right and left disc plane of the spectacle frame defining cadding systems.

The data processing device is preferably a computer or microprocessor. Further, the user data determining means and the parameter determining means may operate independently of each other. Preferably, the

Data processing device designed such that the

User data determination device and the parameter determination device are operated by means of a microprocessor. In other words, the data processing device is designed such that a microprocessor executes both the task (s) of the user data determination device and the parameter determination device.

In other words, a two-dimensional image of at least a portion of the head of the user is generated by each image recording device. Each of the images of the image data and / or the comparison image data includes an auxiliary point or at least two auxiliary points, preferably three auxiliary points. For example, image data and / or comparison image data, which are generated by an image recording device, have only one auxiliary point. By contrast, image data and / or comparison image data which are generated by a further image recording device may include two or more auxiliary points. If both pupils are shown in a picture, it is not necessary to arrange or map two auxiliary points. In any case, at least one auxiliary point is imaged in all image data used for further evaluation, and at least one spectacle-edge and / or spectacle-lens edge is imaged, with all these image data being the same auxiliary point. Furthermore, the spectacle-detecting edge or spectacle-lens edge assigned to the illustrated auxiliary point is imaged. The image capture devices are also designed and arranged such that in the two-dimensional image data, the image of the auxiliary point is outside the image of the spectacle frame or spectacle lens edge.

Analogously, one or more auxiliary points and one or both pupils are imaged in the comparison image data.

+ Furthermore, preferably in the operating position the

Image pickup devices are disposed within a space area encompassed by a cone having a predetermined opening angle, the cone apex of the cone being disposed in an environment of a predetermined reference point and the cone axis being parallel to a predetermined direction, wherein the user's zero direction direction is the predetermined direction equivalent.

In other words, the image pickup devices are preferably arranged in a cone volume. The tip of the cone is located at a distance of less than about 20 cm, preferably less than about 10 cm, preferably about 0 cm from the reference point.

Preferably, the location of one of the user's pupils or the root of the user's nose corresponds to approximately the predetermined reference point. In operation of the device, the user may be positioned so that the location of one of the user's pupils or the nose root is approximately at the predetermined reference point, i. essentially the apex of the cone. The distance between the cone tip of the cone and one of the pupils or the root of the nose of the user is preferably less than about 20 cm, more preferably less than about 10 cm, particularly preferably about 0 cm.

+ According to another preferred embodiment of the present invention, the opening angle of the cone is less than 90 °, further preferably between about 60 ° and about 10 °, more preferably between about 45 ° and about 20 °, in particular about 30 °. The opening angle here corresponds to the angle between the axis of symmetry of the cone and the lateral surface of the cone, wherein the cone is rotationally symmetrical. In other words, the cone volume can be described by rotation of a right-angled triangle, with the triangle rotating about a catheter and the lateral surface of the cone being described by means of the rotation of the hypothenuse of the right-angled triangle. The opening angle of the cone corresponds to the angle between the hypotenuse and the axis of rotation, ie the said right angle triangle.

By arranging the image pickup devices on a cone with an opening angle of preferably about 30 °, user data can advantageously be determined very effectively, since comparison image data can be generated without the user's pupil being obscured, for example, by a nose of the user.

Further preferably, effective optical axes of the image pickup devices intersect at least almost, wherein an intersection angle between about 60 ° and about 10 °, preferably between about 45 ° and about 20 °, more preferably about 30 °.

In a further preferred embodiment, the zero viewing direction of the user is operatively arranged substantially parallel to the effective optical axis of at least one of the image pickup devices. In other words, in the operating state, at least one of the image pickup devices is arranged such that the zero viewing direction of the user can be arranged substantially parallel to the effective optical axis of these image pickup devices, or the user can position such that the zero direction thereof is substantially parallel is arranged to the effective optical axis of these image pickup devices. + In a further preferred embodiment of the present invention, the effective optical axis of at least one of the image pickup devices is arranged substantially parallel to a horizontal direction in the reference frame of the earth.

Preferably, the user's horizontal plane is operationally arranged such that the effective optical axis of at least one of the image pickup devices is therein. That is, in the operating state of the apparatus of the present invention, at least one of the image pickup devices is preferably arranged so that the user can position themselves or the user can be positioned so that the user's horizontal plane comprises the effective optical axis. In operation, the user can thus align his head so that the horizontal plane preferably includes the effective optical axis of the image pickup device. The horizontal plane may preferably also be the horizontal plane in the frame of reference of the earth.

+ In a particularly preferred embodiment, one of the image pickup devices is arranged in the operating position such that its effective optical axis at least almost intersects the root of the nose of the user. In other words, in the operating state of the device of the present invention, the user may preferably be positioned such that the effective optical axis of at least one of the image pickup devices almost intersects the root of the user's nose. Near-cut means here that the minimum distance between the effective optical axis and the root of the nose of the user is less than about 10 cm, preferably less than about 5 cm, more preferably less than about 1 cm.

In a further preferred embodiment at least one of the image pickup devices is arranged in the operating position such that its effective optical axis is arranged substantially symmetrically with respect to the pupils of the user. Symmetrically arranged with respect to the pupils means in the sense of this invention, that each point on the effective optical axis is equidistant from the two pupils of the user. In other words, the effective optical axis lies in a plane which is perpendicular to a connecting path of the centers of the two pupils and bisects this connection path.

Preferably, the effective optical axes of the at least two image pickup devices almost intersect. In particular, the effective optical axes of the at least two image pickup devices are arranged such that a location of minimum distance of the two effective optical axes from both pupils of the user is equidistant. In particular, a location of minimum distance of the effective optical axes corresponds to the location of the root of the nose of the user. In other words, the effective optical axes at least nearly intersect, with the intersection of the effective optical axes and the minimum distance point from the effective optical axes being symmetrical with respect to the pupils of the user, preferably corresponding to the location of the user's nose.

+ Further preferably, projections of the effective optical axes of the at least two imaging devices intersect at a horizontal plane in the frame of reference of the earth at a cutting angle which is between about 10 ° and about 60 °, preferably between about 15 ° and about 40 °, most preferably about 23, 5 °, whereby a simplified selection of the user data is achieved.

Advantageously, it is possible with the preferred apparatus of the present invention to determine user data of the user even in spectacle frames with very wide brackets or sports eyewear frames, which substantially obscure the eye laterally. In particular, this is also possible if the sports glasses have tinted lenses, through which the pupils are only conditionally or not visible.

+ In a further preferred embodiment of the present invention projections of the effective optical axis of the at least two imaging devices intersect at a vertical plane in the frame of reference of the earth at a cutting angle which is between about 10 ° and about 60 °, preferably between about 15 ° and about 40 °, most preferably about 23.5 ° ,

In a particularly preferred embodiment of the present invention, in the operating position, the zero-viewing direction of the user is arranged parallel to the horizontal plane in the frame of reference of the earth.

+ Further preferably, the user data determining means comprises user data positioning means adapted to associate predetermined user data positions in the two-dimensional space of the image data. In other words, user data, i. Location information in three-dimensional space, displayed on location information in two-dimensional space. For example, the pupil center is imaged in the generated two-dimensional image data.

In another preferred embodiment of the present invention, the user data positioning means is arranged such that the positions in the image data associated with at least a part of the predetermined user data are assignable by a person. By way of example, limitations of at least one spectacle lens of the user can be assigned by a person to a dimension in the box dimension.

In a further particularly preferred embodiment, the user data positioning device is designed to predetermine positions of the image data associated with the predetermined user data, taking into account location information of at least one of the image recording devices in three-dimensional space.

+ According to a preferred embodiment, the assignment of the positions in the image data can be performed by a person. The assignment however, the positions are preferably not possible for all existing positions, but only for a predetermined selection of positions. For example, the point of intersection of a horizontal plane in the reference system of the user with the spectacle lens edges can preferably not be assigned completely along the spectacle lens edges, but only along one or more lines in the image data.

In a further preferred embodiment, the user data positioning device is designed to automatically allocate at least a portion of the user data positions in the two-dimensional space of the image data. For example, in the two-dimensional space of the comparison image data, the positions of the pupil centers can be automatically assigned or determined.

Preferably, the at least two image recording devices are designed to generate image data and / or comparison image data at the same time, the image recording devices particularly preferably simultaneously generating image data and / or comparison image data from both eyes of the user.

+ Particularly preferably, each of the image recording devices simultaneously generates comparison image data of at least one subregion of the auxiliary structure, preferably at least two auxiliary points and the two eyes.

+ Further particularly preferably, each of the image recording devices simultaneously generates image data of the spectacles and / or the at least one spectacle lens and of at least one subregion of the auxiliary structure, preferably of at least two auxiliary points.

Furthermore, the image recording devices are preferably designed to generate image data and / or comparison image data of the user, for example, sequentially for a multiplicity of different viewing directions of the user.

In this case, for example, image data and / or comparison image data can be included different discrete viewing directions, ie discrete deflections of the eyes are generated. However, it is also possible that image data and / or comparison image data are generated at different discrete head orientations.

The data processing device is particularly preferably designed to determine a viewing behavior of the user on the basis of the plurality of comparison image data.

For example, the viewing direction can be controlled using fixation targets. Fixation targets may be one or more bulbs such as LEDs (hereinafter referred to as LEDs or LEDs) LEDs are in an optically finite distance, which light up in different colors and / or at different times. In addition, the LEDs can be arranged at different positions in space. By deliberately driving certain LEDs, it is possible to deflect a user's gaze in a certain direction, as long as the user is looking at the luminous or LEDs.

+ Preferably, each eye is offered its own LED, both LEDs can glow in the same or different color. For example, the right eye LED may glow green, the left eye LED may be red. Other colors can be used.

+ Further preferably, the LEDs are arranged such that they are due to optical imaging for the viewer in the optically infinite point.

Preferably, the imaging to infinity occurs only in a major section, e.g. through a cylindrical lens. Most preferably, this main section is horizontal.

+ According to another preferred embodiment, static and / or moving real and / or virtual images could be displayed, for example conventional 3D holograms or conventional 3D monitors, where distance and Position of the images can be changed so that specific situations can be modeled. Corresponding devices for displaying such images are described, for example, in http://www.gfai.de/3d_display_if or http://www.seereal.de.

In particular, by means of the data processing device a viewing behavior of the user can be determined on the basis of the plurality of comparison image data. Particularly preferably, the comparison image data can be generated in a very rapid time sequence by means of the image recording devices, so that the data processing device can determine a substantially continuous visual behavior of the user.

Short Summary

In summary, a deviation of an actual position of use of the spectacles or the first and / or the second spectacle lens from a desired use position of the spectacles or of the first and / or the second spectacle lens can advantageously be indicated. The desired use position here is the position of use of the spectacles or the first and / or the second spectacle lens in the system consisting of spectacle lens or glasses and corresponding eye (s) of the user, for which the individual spectacle lenses were determined and made, in particular the actual position of one or both lenses is taken into account in the spectacle frame. In this case, the position of the at least one spectacle lens relative to the pupil center of the corresponding eye can be determined when the eye is aligned in the zero-viewing direction or relative to the eye-pivot point of the corresponding eye. In particular, it is possible according to the invention that the deviation of an actual position of use of the at least one spectacle lens from a desired position of use of the at least one spectacle lens can be specified. The desired use position here is the position of use of the spectacle lens in the system consisting of spectacle lens and the corresponding eye, in front of which the spectacle lens is arranged. According to the invention, the user's eye is called the the eyeglass corresponding eye of the user referred to, for which the individual lens was determined and made. In particular, it is possible to take into account the actual position of one or both lenses in the spectacle frame. The term "spectacles" in the sense of this invention may therefore be synonymous with "a spectacle lens with or without spectacle frame" or with "both spectacle lenses with or without spectacle frame".

The desired use position can be determined, for example, with the device described above and stored in a memory device of the device. The desired use position can also be stored in a database. The actual position of use describes the position of the glasses produced in the eyeglass-eye system of the user or the position of the at least one eyeglass lens in front of the corresponding eye when the user wears the eyeglasses or the at least one spectacle lens. The actual use position or the desired use position is determined for example on the basis of individual parameters, such as the corneal vertex distance and / or other conventional parameters, as indicated for example in the above-cited DIN standards and cited books. If one or more of the individual parameters of the actual use position deviates from one or more of the individual parameters of the desired use position, these parameters can be corrected by an optician, wherein in particular the actual position of one or both lenses relative to the spectacle frame can be used in the correction. Subsequently, the new, actual use position can be determined and compared with the desired use position. If necessary, the actual position of use can be adjusted again. This process can be repeated. In this case, initially one or more imaging means can be attached to a spectacle lens or both spectacle lenses, which make it possible to determine the centering of the spectacle lens in the socket. With known, actual centering the shape of the spectacle frame can be repeatedly corrected and checked until the actual use position corresponds to the desired use position. Apparatus according to one aspect of the invention according to independent claim 31

According to a further aspect of the invention, an apparatus for determining a position of a pair of spectacles and / or a spectacle lens relative to a pupil center of a corresponding eye of a user in the zero viewing direction

at least one image recording device which is designed and arranged,

Comparative image data of at least partial areas of the user's head in the absence of spectacles and / or in the absence of the at least one spectacle lens and at least one partial area of a spectacle

To create auxiliary structure and

Image data of substantially identical subareas of the user's head with spectacles arranged thereon and / or with at least one spectacle lens arranged thereon and at least one image

To create part of the substructure;

at least one pattern projection device which is designed and arranged to project predetermined pattern data onto at least partial areas of the user's head;

a data processing device which is designed to use the image data, the comparison image data and the auxiliary structure to determine the position of the spectacles and / or the at least one spectacle lens relative to the pupil center of the corresponding eye in the zero viewing direction of the spectacle

Determine and user a data output device which is designed to output the position of the spectacles and / or the at least one spectacle lens relative to the pupil center of the corresponding eye in the zero viewing direction of the user.

Preferably, the apparatus comprises exactly one image pickup device and exactly one pattern projection device, whereby also according to this aspect of the invention, analogously to the preceding aspect of the invention, advantageously three-dimensional user data of the subarea of the head or the subarea of the system are generated. The three-dimensional user data can advantageously be generated on the basis of image data of only one image recording device. Preferably, the three-dimensional data is generated by means of the principle of phase-measuring triangulation. Here, the head or the partial area of the head pattern data are superimposed or projected by means of the pattern projection device. The image recording device generates image data of the at least partial area of the head in the two-dimensional space. A surface texture of the portion of the head, i. the coordinates in the third dimension is generated by phase information of the projected pattern data indirectly via intensity patterns.

Thus, according to this aspect of the present invention, three-dimensional user data can be generated. Based on the three-dimensional user data, the optical parameters of the user, analogous to the preceding aspect of the invention, can be determined using only one image pickup device. Likewise, as described above, an auxiliary point is used to determine the position of the pupil relative to the spectacles or the corresponding pupil relative to the first and / or the second spectacle lens. Method according to one aspect of the invention according to independent claim 32

A further aspect of the present invention relates to a method for determining a position of spectacles and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user in the zero viewing direction, comprising the following steps:

Generating comparison image data of at least a portion of the user's head in the absence of spectacles and / or in the absence of the at least one spectacle lens and at least a portion of an auxiliary structure;

Generating image data of a substantially identical subregion of the user's head with glasses arranged thereon and / or with at least one spectacle lens arranged thereon and at least one subregion of the auxiliary structure;

Determining the position of the spectacles and / or the position of the at least one spectacle lens relative to the pupil center of a corresponding one

Eye of the user in the zero direction on the basis of the image data, based on the comparison image data and based on at least the portion of the auxiliary structure.

Further preferred embodiments of the invention, in particular according to the dependent claims

Preferably, in the generated image data, the at least one subregion of the substructure is not imaged through the at least one spectacle lens.

Particularly preferably, in the generated image data, the at least one subregion of the auxiliary structure is not imaged through both spectacle lenses. Preferably, the method comprises the further step:

Comparing actually measured individual parameters of a use position of the at least one spectacle lens in the system spectacle lens and eye of the user of the at least one spectacle lens with predetermined individual parameters of the position of use of the at least one spectacle lens in the system spectacle lens and eye of the user of the spectacle lens.

+ Further preferably, the method comprises the further step:

Comparing actually measured individual parameters of a position of use of the glasses in the system Glasses and head of the user of the glasses with predetermined individual parameters of the use position of the

Glasses in the system. Glasses and head of the user of the glasses.

Preferably, the method comprises an initial step:

Represent at least one characteristic point of at least one

Spectacle lens based on at least one display means or more presentation means.

+ Further preferably, during the step of generating the image data, the at least one representing means is mapped in the image data, and

is prior to the step of determining the position of the glasses and / or the position of the at least one spectacle lens relative to the pupil center of the corresponding eye or during the step of determining the position of the spectacles and / or the position of the at least one spectacle lens relative to the pupil center of the corresponding eye in Zero viewing direction determines a position of at least one spectacle lens relative to the spectacle frame based on the image data, in particular the position of the at least one display means.

The position of a spectacle lens or both spectacle lenses of the spectacles can be determined. Furthermore, after the initial step of displaying the characteristic point of one or both spectacle lenses, one or more, in particular all subsequent steps can be repeated, in particular iteratively. In this case, for example, it is possible to detect and correct the position of the spectacles or the spectacle lens or both spectacle lenses in front of the eye.

Preferably, during the step of determining the position of the at least one spectacle lens relative to the spectacle frame, actual centering data of the at least one spectacle lens relative to the spectacle frame is determined based on the image data, in particular the position of the at least one representation means.

It is particularly preferable to determine a deviation of the specific, actual centering data from predetermined, theoretical centering data, wherein the predetermined, theoretical centering data are those centering data on the basis of which the at least one spectacle lens was arranged in the spectacle frame.

Preferably, the image data is generated under at least two different shooting directions and the comparison image data is generated under at least two different shooting directions.

Preferably, the step of determining the position of the spectacles and / or the position of the at least one spectacle lens comprises a step of determining a position of at least the subregion of the auxiliary structure in both the comparison image data and the image data. + Further preferably, the step of determining the position of the spectacles and / or the position of the at least one spectacle lens further comprises

a step of determining the position of the pupil center points in the zero-viewing direction relative to the at least one

Subarea of the auxiliary structure in the comparison image data and

a step of determining the position of the spectacles and / or the position of the at least one spectacle lens relative to the at least one subregion of the auxiliary structure of the image data.

+ Further preferably, the process comprises:

Determining the position of the spectacles and / or the position of the at least one spectacle lens relative to the pupil center of the corresponding eye in the zero viewing direction due to the position of the spectacles and / or the position of the at least one spectacle lens relative to the at least one subregion of the auxiliary structure and the position of the at least a portion of the auxiliary structure relative to the pupil center corresponding eye in the zero direction.

The same applies analogously for both lenses.

The individual parameters are particularly preferred on the basis of the position of the spectacles and / or the position of the at least one spectacle lens relative to the at least one subregion of the auxiliary structure and the position of the at least one subregion of the auxiliary structure relative to the pupil center of the corresponding eye in the zero viewing direction pupil or pupil center certainly.

The same applies analogously for both lenses.

Preferably, the method is carried out using at least two auxiliary structures, in particular at least two auxiliary points. The method is particularly preferably carried out on the basis of at least three auxiliary structures, in particular of at least three auxiliary points.

The method is particularly preferred for both lenses, i. for both pupils or both pupil centers, in particular carried out at the same time.

Method according to one aspect of the invention

Another aspect of the present invention relates to a method for determining the position of spectacles relative to a user's head with an image capture device and a pattern projection device.

Computer program device according to one aspect of the invention according to independent claim 45

According to a further aspect of the present invention there is provided a computer program device having program parts which, when loaded in and executed by a computer, are suitable for carrying out the method according to the invention.

Analogously, the above statements apply analogously to all aspects of the present invention.

Description of preferred embodiments with reference to figures

The invention will be described by way of example with reference to accompanying figures of preferred embodiments. It shows: Figure 1 is a perspective schematic view of a preferred embodiment of the apparatus of the present invention in the operative position;

FIG. 2 shows a schematic sectional view in a top view of an arrangement of the image recording devices according to FIG. 1 in the operating position;

Figure 3 is a schematic sectional view from the side of an arrangement of

- Image recording devices according to Figure 1 in the operating position;

Figure 4 is a schematic sectional view in plan view of another preferred embodiment of the present invention in the operating position;

FIG. 5 is a schematic view of exemplary image data;

FIG. 6 is another schematic view of exemplary image data;

FIG. 7 shows a schematic view of exemplary comparison image data;

FIG. 8: exemplary image data according to FIG. 5;

FIG. 9: exemplary image data according to FIG. 6;

FIG. 10: exemplary output data;

FIG. 11: an exemplary saddle point;

FIG. 12 shows a conventional device for determining engraving tags.

Figure 1 shows a schematic perspective view of a device 10 according to a preferred embodiment of the present invention. The device 10 comprises an arrangement device in the form of a housing or a pillar 12, on which a first image recording device in the form of an upper camera 14 and a second image recording device in the form of a lateral camera 16 is arranged. Furthermore, a data output device in the form of a monitor 18 is integrated into the column 12. The upper camera 14 is preferably located in the interior of the column 12, for example as shown in Figure 1, at least partially at the same height as the monitor 18. In the operating position, the upper camera 14, and the lateral camera 16 are arranged so that an effective optical axis 20 of the upper camera 14 with an effective optical axis 22 of the lateral camera 16 at an intersection point 24 intersect. The point of intersection 24 of the effective optical axes 20, 22 is preferably the point of a root of the nose (see FIG. 2).

The upper camera 14 is preferably arranged centrally behind a partially transparent mirror 26. The image data or comparison image data of the upper camera 14 are generated by the partially transmissive mirror 26 therethrough. The image data or

Comparative image data (hereinafter referred to as images) of the upper camera 14 and the lateral camera 16 are preferably output to the monitor 18.

Furthermore, 10 10 three illuminants 28 are arranged on the column 12 of the device. The lighting means 28 may be, for example, light sticks, such as

Fluorescent tubes act. However, the lighting means 28 may also each include one or more bulbs, halogen lamps, light-emitting diodes, etc.

In the preferred embodiment of the apparatus 10 of the present invention shown in FIG. 1, the effective optical axis 20 of the upper camera 14 is disposed parallel to the zero-viewing direction of a user 30. The zero-view direction corresponds to the fixation line of the eyes of the user in the primary position. The lateral

Camera 16 is arranged such that the effective optical axis 22 of the lateral

Camera 16 intersects the effective optical axis 20 of the upper camera 14 at an intersection 24 at an intersection angle of approximately 30 °. The point of intersection 24 of the effective optical axes 20, 22 is preferably the point of a nose root (see FIG In the preferred embodiment of the apparatus 10 of the present invention, the effective optical axis 22 also intersects the zero viewing direction at an angle of 30 °. The cutting angle of 30 ° is a preferred cutting angle. There are also other cutting angles possible. Preferably, however, the cutting angle is less than about 60 °.

Furthermore, it is not necessary that the effective optical axes 20, 22 intersect. Rather, it is also possible that the minimum distance of the effective optical axes from the location of the root of the nose of the user 30 is, for example, less than approximately 10 cm. Furthermore, it is possible for another lateral camera (not shown) to be arranged on the pillar 12, wherein the further lateral camera is, for example, at an angle to the lateral camera 16.

In a further preferred embodiment, the upper camera 14 and the lateral camera 16 may be arranged such that their positions, and in particular their effective optical axes, may for example be adapted to the size of the user 30. The determination of the relative positions of the cameras 14, 16 to each other can be made by means of a known calibration method.

The cameras 14, 16 can furthermore be designed, for example, to generate individual images of a subarea of the head of the user 30 in each case. But it is also possible that based on the cameras 14, 16 video sequences are recorded and these video sequences are used for further evaluation. Preferably, however, individual images are generated at the cameras 14, 16 and these individual images are used for further evaluation, wherein the upper camera 14 and the lateral camera 16 are time-synchronized, ie record or generate images of the preferably identical subregion of the user's head 30 at the same time. Furthermore, it is possible for both cameras 14, 16 to record images of different areas of the user's head 30. However, the pictures of the two cameras contain at least an identical subarea of the user's head 30.

In the operative position, the user is preferably positioned so that his gaze is directed to the partially transmissive mirror 26, the user gazing at the image of his nasal root (see Figure 2) in the mirror image of the partially transmissive mirror 26.

The column 12 may have any other shape or represent a different type of housing in which the cameras 14, 16 and, for example, the bulbs 28, the partially transparent mirror 26 and the monitor 18 are arranged.

In the operating position, the distance between the partially transmitting mirror 26 and the user 30 is only between about 50 and 75 cm, with the user 30 standing in front of the mirror or in front of the partially transmitting mirror according to an operation to which the user 30 is wearing glasses 26 is sitting. Thus, the use of the preferred device according to the invention is possible even in limited spatial conditions. Accordingly, device 10 may for example be designed so that the positions of the upper camera 14 and the side camera 16 and, for example, the partially transparent mirror 26 and the lighting means 28 are arranged vertically adjustable. The upper camera 14 can therefore also be located above or below the monitor 18. Furthermore, it is also possible to tilt or rotate the column 12 or the upper camera 14, lower camera 16, partially transparent mirror 26 and illuminating means 28 disposed on the column 12 about a horizontal axis in the frame of reference of the earth.

For example, according to another preferred embodiment of the invention, the side camera 16 may be replaced by a pattern projection device such as a conventional projector, and the three-dimensional user data may be determined by a conventional method such as phase measuring triangulation.

FIG. 2 shows a schematic plan view of preferred arrangements of the cameras 14, 16 in the operating position and the positioning of a user 30 in the operating position. As shown in Figure 2, projections of the effective optical axes 20, 22 intersect at a horizontal plane in the frame of reference of the earth at an angle of 23.5 °. The intersection angle between the effective optical axes 20, 22 in the plane, which is spanned by the two effective optical axes 20, 22 is, as shown in Figure 1, 30 °. The intersection 24 of the effective optical axes 20, 22 corresponds to the location of the root of the nose of the user 30. Further, as shown in FIG. 2, a position of the lateral camera 16 may be variable along the effective optical axis 22, for example. The position 32 of the lateral camera 16 corresponds for example to the position as it is also shown in FIG. The lateral camera 16 may, for example, however, also be arranged offset along the effective optical axis 22 at a position 34, preferably the lateral camera 16 can be positioned as desired. In the image data generated by the lateral camera 16, however, at least one pupil (not shown) of the user and at least one spectacle lens edge 36 or a spectacle-detecting edge 36 of a spectacle 38 of the user must be imaged. Furthermore, the pupil preferably has to be completely imaged within the eyeglass frame or glass rim 36 of the eyeglasses 38. Similarly, the upper camera 14 can be positioned differently.

Further, if only the position of one or both lenses relative to the eyeglass frame is to be determined and checked, for example, it is not necessary for the user 30 to wear the eyeglasses 38 for determining the position of the lens relative to the eyeglass frame on the head. Rather, the position of the spectacle lens relative to the spectacle frame can also be determined independently of the user 30. For example, the glasses 38 may be stored on a shelf, such as a table (not shown). Consequently, the device can therefore also be designed differently, for example, have a different dimension. In particular, the device may also be smaller than shown in FIG. For example, the device may only have the two cameras 14, 16, which may be arranged substantially stationary relative to one another. The cameras are designed with a computer connectable, allowing a data exchange between the cameras 14, 16 and the computer is possible. For example, the device can also be designed to be mobile. In other words, the image recording devices, ie the cameras 14, 16, may be arranged separately from the data processing device, ie the computer, in particular housed in separate housings.

It is also possible that the glasses are worn by someone other than the actual user.

Figure 3 shows a schematic sectional view of the arrangement of the cameras 14, 16 in the operating position and a position of the user 30 in the operating position, from the side as shown in Figure 1. As already shown in FIG. 2, the lateral camera 16 can be positioned along the effective optical axis, for example at the position 32 or at the position 34. Further in FIG. 3, the projection of the effective optical axes 20, 22 onto a vertical plane in the reference frame represented the earth. The angle between the effective optical axes 20, 22 is for example 23.5 °, which corresponds to an intersection angle of 30 ° in the plane, which is spanned by the effective optical axes 20, 22.

FIG. 4 shows in plan view a sectional view of a second preferred embodiment of the device 10 according to the present invention. Instead of two cameras, only the upper camera 14 is used. The upper camera 14 has an optical axis 40. The optical axis 40 corresponds to a line extending from a center of the aperture (not shown) of the upper camera 14 and perpendicular to the plane of the aperture (not shown) of the upper camera 14.

Starting from the upper camera 14 is located in the direction of the optical axis 40, a beam splitter 42 in the beam path of the camera 14. The beam splitter 42 is for example designed such that it can be changed between two modes: - The beam splitter 42 is either almost completely mirrored or

- The beam splitter is almost completely transparent to light.

For example, if the beam splitter 42 is completely transmissive to light, the optical axis 40 of the upper camera 14 is not deflected, but intersects the user 30's head at the intersection 24. In this case, the effective optical axis 20 corresponds to the optical axis 40 of the upper camera 14. If the beam splitter 42, however, completely mirrored, the optical axis 40 of the upper camera 14 is deflected by the beam splitter 42 according to known optical laws, as shown in Figure 4. For example, the optical axis 40 is deflected by an angle of 90 ° in a first deflected portion 44 of the optical axis 40 of the upper camera 14. The first deflected portion 44 intersects another optical element, such as a deflecting mirror 46. Thereby, the first deflected portion 44 of the optical axis 40 is redirected according to the conventional optical laws into a second deflected portion 48 of the optical axis 40. The second deflected portion 48 of the optical axis 40 intersects the head of the user 30. The second deflected portion 48 of the optical axis 40 corresponds to the effective axis 22 of the upper camera 14 in the event that the beam splitter 42 is completely mirrored.

From the upper camera 14 images of the portion of the head of the user 30 are generated with a time delay, wherein the images are generated either in fully mirrored beam splitter 42 or completely transparent beam splitter 42. In other words, two images of the partial area of the head of the user 30 can be generated on the basis of the upper camera 14, which images correspond to the images that can be generated according to FIG. 1, 2 or 3. However, in this preferred embodiment, the images are time-shifted generated by an image capture device, the upper camera 14.

Figure 5 shows a schematic view of image data as from the upper one Camera 14 are generated, ie a schematic frontal view of a portion of the head of a user 30, wherein only two lenses 50, and a spectacle frame 52 and a saddle point 53 as a preferred auxiliary point and two saddle points 153, 253 are shown as preferred means of presentation. Further, FIG. 5 shows a boundary 62 of the right eye eyeglass frame 52 (not shown) and a left chest frame 52 bezel frame 52 (not shown) in box dimension, and intersection points 66 a horizontal plane with the eyeglass detection edge 52 in the user's frame of reference with respect to the right eye (not shown) and points of intersection 68 of a vertical plane in the reference system of the user 30 to the horizontal plane of the user 30. The horizontal plane is shown by the dashed line 70, the vertical plane by the dashed line 72.

Each saddle point 53, 153, 253 may be a sticker, for example. It is also possible that two saddle points 53 are used, one saddle point being assigned to the left eye (not shown) and one saddle point to the right eye (not shown).

More preferably, 9 saddle points 53, 153, 253 (not shown) are used, with three saddle points 153 on one spectacle lens (not shown), three saddle points 253 on the other spectacle lens (not shown), and three saddle points 53 on the head, for example, the forehead of the user are arranged (not shown) to a position of each lens relative to the corresponding eye, ie to determine the corresponding pupil or the corresponding pupil center in three-dimensional space.

Similarly, in FIG. 5, intersection points 74 of a horizontal plane and intersections 76 of a vertical plane for the left eye (not shown) are shown, with the horizontal plane being shown by dashed line 78 and the vertical plane being indicated by dashed line 80.

Preferably, the saddle point 53 is automatically from a User data positioning device (not shown) detected and determined.

6 shows a schematic view of the image data of the lateral camera 16 according to FIG. 5. Since the lateral camera 16 is located laterally below the partial area of the head of the user 30, intersections of a horizontal and a vertical plane with the edges of the spectacle frame 52 are not horizontal or vertical lines, as is the case in FIG. Rather, straight lines on which intersection points lie with the horizontal plane and the vertical plane are projected onto oblique lines 84 on the basis of the perspective view of the lateral camera 16. The horizontal plane 70 and the vertical plane 72 therefore intersect the edge 36 of the eyeglass frame 52 at the locations where the projected lines 84 intersect the edge 36 of the eyeglass frame 52, respectively.

By means of the intersections 66, 68, 74, 76 and the saddle point 53 and the position of the saddle point 53 relative to the pupil centers (not shown) of the eyes (not shown), three-dimensional coordinates of the system may be spectacle lens 50 and eye (n) (not shown) are generated. Furthermore, certain points in box size can be used to determine the three-dimensional coordinates. Alternatively, the three-dimensional coordinates can be generated at least partially, if appropriate, also by means of the points determined according to box dimensions. From the positions in the image data, that is, the intersections 66, 68, 74, 76 and the saddle point 53 relative to the pupil centers (not shown) of the eyes (not shown), knowing the positions of the upper camera 14 and the side camera 16 Location relations in the three-dimensional space in the system spectacle lens 50 and eye (s) 54, 56 are generated. The intersections 66, 68, 72, 74 and saddle point 53, respectively, may be determined by an optician and entered from a computer mouse (not shown). Alternatively, the monitor 18 may be designed as a "touch screen" and the intersection points 66, 68, 72, 74 and the saddle point 53 may be determined and entered directly on the basis of the monitor 18. Alternatively, however, these data can also be generated automatically using image recognition software. In particular, it is possible that a Software-supported image evaluation is subpixel accurate. According to a further embodiment of the invention, the positions of further points of the spectacles 38 can be determined and used to determine the optical parameters in three-dimensional space.

Based on the three-dimensional user data of the system eyeglass lens and eye 54, 56 optical parameters of the user 30 can be determined, in which determination head and eye movements can be considered. For this purpose, for example, a plurality of images is generated without glasses 38 arranged, wherein the user 30 performs a head movement or, for example, a moving object followed with the eyes. Alternatively, it is also possible to produce images without arranged spectacles 38 with discrete head or eye deflections, which can be used, for example, for determining a convergence behavior of the eyes or for determining differences in the eye-deflection behavior. As shown in Figure 1, the user is preferably positioned in the primary position and, as shown in Figure 2, for example, the effective optical axis 20 of the upper camera 14 and the central parallel of the lines of fixation of the eyes 54,56 in the primary position are identical. Another embodiment of the device 10 of the present invention is designed so that only one side, that is, either the right side corresponding to the right eye (not shown) or the left side corresponding to the left eye (not shown), both from the upper camera 14 and the lateral camera 16 is shown. The optical parameters of the user 30 are determined on the one hand and the symmetrical assumptions are used to determine the optical parameters for both sides.

FIG. 7 shows a schematic view of comparison image data as generated by the upper camera 14, ie a schematic frontal view of a portion of the head of a user 30 in the absence of glasses, wherein only a right eye 54 and a left eye 56 of the user 30 are shown. As user data, a pupil center 58 of the right eye 54 and a pupil center 60 of the left eye 56 are shown in FIG. Further, Figure 7 shows the Saddle point 53.

Preferably, pupil centers 58, 60 and saddle point 53 are automatically determined by a user data positioning device (not shown). For this purpose, reflexes 82 are used, which arise on the cornea of the respective eyes 54, 56 due to the light sources 28. Since, according to the embodiments of the device 10 of the present invention shown in FIG. 1, for example, three light sources 28 are arranged, three reflections 82 are imaged per eye 54, 56. The reflections 82 arise for each eye 54, 56 directly at the piercing point of a respective illuminant fixation line on the cornea. The illuminant fixing line (not shown) is the connecting line between the location of the respective illuminant 28, which is imaged centrally on the retina, and the respective pupil center 58, 60 of the corresponding eye 54, 56. The extension of the illuminator fixation line (not shown) ) goes through the optical eye pivot (not shown). Preferably, the lighting means 28 are arranged so that they lie on a conical surface, wherein the tip of the cone at the pupil center 58 and 60 of the right eye 54 and left eye 56 is located. The axis of symmetry of the cone is arranged starting from the apex of the cone parallel to the effective optical axis 20 of the upper camera 14, wherein the three lighting means 28 are further arranged so that connecting lines of the apex and the respective illuminant 28 intersect only in the apex of the cone.

Based on the reflexes 82 for the right eye 54 and the left eye 56, respectively, the pupil center 58 or 60 of the right eye 54 and the left eye 56 can be determined and, in particular, the position in the three - dimensional space of the saddle point 53 relative to the pupil center 58 or 60 of the right eye 54 and the left eye 56, respectively.

FIGS. 8 and 9 show images which are generated, for example, by the upper camera 16 (FIG. 8) and the lateral camera 16 (FIG. 9). The pictures further show the intersections 66, 68 of the horizontal plane 70 and the vertical plane 72. In FIG. 9, projections of the possible intersections of the horizontal plane 70 and vertical plane 72 with the edge 36 of the spectacle frame 52 are shown, taking into account the perspective view of the lateral camera 16, as a straight line 84.

Advantageously, according to the apparatus 10 of the present invention, the optical parameters, ie, for example, pupil distance, corneal vertex distance, socket disc angle, pretilt, and buff height, can be determined for a user 30 whose gaze displacement does not correspond to the zero gaze direction and actual values of the fitted goggles are compared to given values. Rather, according to the present invention, the user 30 looks at the image of his nose bridge in the partially transmissive mirror 26 from a distance of about 50 to about 75 cm. In other words, the user 30 is at a distance of about 50 to about 75 cm semitransparent mirror 26, and looks at the image of his face in the partially transparent mirror 26, in particular on his nose root. The position of the eyes 54, 56, which results from the viewed object, that is the convergence of the eyes 54, 56, can be taken into account in the determination of the optical parameters and, for example, compensated for rotation of the eyes in the determination of the optical parameters, for example a virtual zero-sighting direction can be determined taking into account the actual gaze deflection and based on the virtual, ie the determined and not measured zero-sighting direction, the optical parameters of the user can be determined. Advantageously, therefore, the distance between the user 30 and the cameras 14, 16 may be low. In particular, it is also possible that the optical parameters are already approximately predetermined. Further, the goggles 38 may be pre-fitted and the optical parameters determined by the apparatus 10 of the present invention for the one previously adopted.

Furthermore, the device 10 is designed according to a further preferred embodiment, the pretilt angle of the spectacles 38 for each spectacle lens from the angle between the straight line through the upper intersection 68 and the lower Intersection point 68 of the vertical section plane 72 with the edge 36 of the spectacle frame 52 to calculate in three-dimensional. In addition, an average pretilt may be determined from the pretilt determined for the right eye 54 and the pretilt determined for the left eye 56. Furthermore, a warning may be issued if the front inclination of the right spectacle lens deviates from the front inclination of the left spectacle lens by at least a predetermined maximum value. Such an indication can be output, for example, by means of the monitor 18. Analogously, frame disc angle and corneal vertex distance or pupil distance from the three-dimensional data record for the right eye 54 and the left eye 56 as well as mean values thereof can be determined and, if necessary, information about the monitor 18 output, if the deviations of the values for the right eye 54 and the left Eye 56 exceed a maximum value in each case.

The corneal vertex distance can be calculated optionally according to the reference point requirement or according to the requirement of the ocular rotation point. According to the reference point requirement, the corneal vertex distance corresponds to the distance of the vertex of the spectacle lens 50 from the cornea at the piercing point of the fixation line of the eye in the zero viewing direction. According to the eye pivot point requirement, the corneal vertex distance corresponds to the minimum distance of the cornea from the spectacle lens 50.

Furthermore, the device 10 of the present invention may be designed such that the grinding height of the spectacle lens 50 is calculated from a distance of the piercing point of the fixation line of an eye 54, 56 in primary position with a glass plane of a spectacle lens 50 from a lower horizontal tangent in the plane of the glass. A lower horizontal tangent, for example, in Figures 5 and 6, the line 84 of the boundary 62, 64 according to box size. Preferably, the device 10 is designed so that from points on the edge 36 of the eyeglass frame 52 for each eye 54, 56, a three-dimensional closed stretch train for the glass form of the lens 50 is determined, wherein from distances of the respective spectacle lenses 50 of the right eye 54 and the left Auges 56 an average range of distances for the glass mold can be determined.

Alternatively, it is also possible that instead of averaging the values of the optical parameters which are determined for the right eye 54 and the left eye 56, the optical parameters, or the stretch path for the glass mold only for the spectacle lens 50 of one of the eyes 54 , 56 and these values will also be used for the other of the eyes 54, 56.

Furthermore, in accordance with a preferred embodiment, the apparatus may be used to generate images of the user 30 and these images

Overlay image data of a variety of frame and / or lens data, whereby an optimal consultation of the user 30 is possible. In particular, you can

Materials, layers, thickness and colors of the lenses whose image data is superimposed on the generated image data can be varied. The device 10 according to the present invention can therefore be designed to include adaptation recommendations, in particular optimized individual parameters for a multiplicity of different ones

To provide spectacle frames or lenses.

In particular, the apparatus is designed to determine the above parameters and values for a pair of glasses using at least one saddle point 53 and to compare them with corresponding predetermined parameters and values. In particular, the actual position of use of the glasses can be compared with a predetermined position of use, according to which the glasses were made and deviations from the predetermined position of use are corrected. The predetermined parameters may be stored by the device and retrieved from its memory. The predetermined parameters and values can also be supplied to the device.

FIG. 10 shows an output image, as can be displayed, for example, on the monitor 18, wherein the image data of the upper camera 14 (referred to as camera 1) and the lateral camera 16 (referred to as camera 2) are shown. Furthermore, an image of the lateral camera 16 is shown, in which the user data are displayed. Furthermore, the optical parameters for the right eye 54 and the left eye 56, as well as average values thereof, are shown. The displayed output image is a superposition of the image data with the comparison image data.

Preferably, a plurality of bulbs 28 are arranged so that for all cameras 14, 16 reflections 82 for each eye 54, 56 directly at the puncture point of the respective fixation on the cornea or geometrically defined to the puncture point, are generated. Further, the bulbs 28 are preferably arranged so that the reflections 82 are generated in particular for the penetration point of the respective fixing line of the eyes 54, 56 in the primary position. Quite particularly preferred, for both eyes approximately geometrically defined corneal reflexes around the puncture point for the upper camera 14 and for the lateral camera 16 reflections at the puncture points of the fixing lines of the eyes 54, 56 in the primary position, by a light source 28 on the respective center parallel the two fixing lines of the eyes 54, 56 in the primary position mirrored effective optical axis 22 of the lateral camera 16 and two further light sources 28, on the cone of the central parallel lines of the fixing lines of the eyes 54, 56 in the primary position as a cone axis and the effective optical axis 20th the lateral camera 16 is defined as a generator, are arranged so that all bulbs 28 lie on disjoint generatrix of the cone and the inserted bulbs 28 have a horizontal extent that the equation

(average pupillary distance) / (horizontal extent) = (distance upper camera 14 to eye 54, 56) / (distance illuminant 28 to eye 54, 56)

suffice.

Furthermore, it is possible by means of the embodiment described above to easily check or determine the position of a pair of spectacles or of the first and / or the second spectacle lens in the position of use, for example relative to the eyes or pupils of the user. In particular, it is thus possible, an actual use position of a pair of glasses with individually adapted To determine spectacle lenses and compare with a desired target use position, which was used for the individual adjustment of the lenses. In case of deviations of the actual use position of the desired use position, in particular, the position of the glasses or the first and / or the second spectacle lens in the actual use position can be corrected so that the actual use position corresponds to the desired desired use position. The desired use position is in this case that position of use of the glasses, knowing which the individually adapted lenses were made. When checking the actual position of use, advantageously, the actual centering of a spectacle lens or both spectacle lenses in the spectacle frame, ie the position of a spectacle lens relative to the spectacle frame can be determined and checked and taken into account in the determination and correction of the actual position of use.

In other words, with the device described above, the desired desired use position of a pair of glasses to be produced can also be determined in a simple manner. The glasses to be produced with individual spectacle lenses can subsequently be produced taking into account the desired desired use position. However, if the spectacles made in accordance with the target use position are used, it is possible that the actual position of use of the spectacles, i. In particular, both of the lenses, thus the actual position of the glasses or the lenses relative to the corresponding eyes of the user, deviates from the desired use position. In order to correct such deviations, it may therefore be necessary to adjust the spectacle frame after manufacture of the spectacles so that the actual position of use corresponds to the previously determined, desired nominal use position. This adaptation can be carried out for example by an optician.

For this purpose, first, comparison image data are generated at least of partial areas of the user's head, but the user does not wear the already manufactured spectacles. In the comparison image data auxiliary marks or auxiliary points, For example, characteristic features of the portion of the head determined. The auxiliary points may be, for example, special features of the portion of the head of the user, such as a birthmark, scars, light or dark pigment spots, etc .. The auxiliary points may also be artificially created points, for example so-called saddle points in the form of stickers to predetermined or predeterminable positions of the portion of the head are mounted. An exemplary saddle point 53 is shown in FIG.

In particular, the auxiliary points 53 are selected at positions of the partial region of the head or the saddle points 53 are arranged correspondingly so that the saddle points 53 are spatially constant or invariable relative to the respective eye pivot points.

Furthermore, in addition to the auxiliary points, the pupil positions or pupil center points of the user, preferably in the zero viewing direction of the user, are determined in the image data of the partial area of the head. The spatial positions of the pupillary centers are still determined relative to the auxiliary points.

Subsequently, image data of the subarea of the user's head are generated, the user wearing the manufactured spectacles 38 with the individually produced spectacle lenses in the actual position of use.

In this case, a further saddle point 153, 253 is arranged or recorded on a spectacle lens or on both spectacles, which or which allow, for example, to determine the position of the engraving points and in particular to determine the position of the engraving points in the box dimension of the corresponding spectacle lens. The saddle point shown in FIG. 11 can consequently also represent a presentation means 153, 253. The presentation means 153, 253 may be formed, for example, as a sticker 153, 253. However, the presentation means 153, 253 can also be a monochrome dot 153, 253 which can be arranged either as a sticker on the spectacle lens (for example shown in FIG. 6) or, for example, with a stylus directly on the spectacle lens (for example shown in FIG Figure 6) is drawn.

If the auxiliary point (s) or presentation point (s) is determined on the basis of saddle points, the saddle points are advantageously designed such that they can be identified in a simple and reliable manner by means of image recognition software.

Using the image data described above, parameters of the spectacles or of the first and / or the second spectacle lens are determined relative to the auxiliary points. Now that both the relative positions of the pupil centers 58, 60 to the auxiliary points 53 are known and the relative position of the spectacles 38 and the first and / or the second spectacle lens in their actual position of use to the auxiliary points 53 is known, can in a simple manner For example, based on a coordinate transformation, the actual position of the spectacles 38 relative to the pupil centers 58, 60 are determined. Therefore, it is possible to identify a deviation of the actual use position of the target use position and compensate subsequently. For example, the actual corneal vertex distance may be determined and compared to the corneal vertex distance used for the calculation and fabrication of the individual spectacle lenses 50. If the two parameters do not match, the glasses 38 can be further adjusted, i. the actual position of use are changed and the new actual position of use is again checked by the method described above. Iteratively, therefore, the actual usage position may be repeatedly determined, compared and adjusted with the desired use position until the deviation of the actual use position from the desired use position is less than an acceptable, predetermined deviation limit value. In this case, the actual position of each spectacle lens can be taken into account on the basis of the centering data determined by means of the representation means.

The correction of the actual position of use can be done not only because of the corneal vertex distance. Rather, the actual Use position with respect to other or other individual parameters are adapted to the desired use position.

Advantageously, therefore, the actual use position can be easily adapted to the desired use position, even if the custom-made lenses 50 are already arranged in the glasses 38 and optionally also a faulty arrangement of the lenses are corrected in the spectacle frame. Measurement errors in the determination of the actual position of use are hereby avoided or are very small because the positions of the pupil centers 58, 60 relative to the spectacles 38 or relative to the first and / or the second spectacle lens are not determined by the spectacle lenses 50, Thus, for example, an incorrect determination of the position of the spectacles 38 or of the first and / or the second spectacle lens relative to the pupil centers 58, 60, which could occur due to the optical properties of the spectacle lenses 50, avoided. The position of the auxiliary points 53 relative to the pupil centers 58, 60, however, was determined in the absence of the spectacles 38 or in the absence of the first and / or the second spectacle lens, which is why no measurement is carried out here by the spectacle lenses 50.

FIG. 12 shows a conventional device for determining the engraving points of a spectacle lens, according to the principle of "DoublePassReflection" in combination with a telecentric illumination and observation optics and a prism optics for splitting the image field into engraving points. With the aid of this device, the engraving points can be determined and represented on the basis of the representation means, for example by gluing saddle points 153, 253.

The present invention is not limited to the above-described particularly preferred embodiments. Rather, the invention also encompasses variations thereof, in particular the use of a device according to the invention for determining optical parameters of a user. The apparatus described above may also be operated in an operating mode in which a position of a spectacle frame relative to the head thereby determines is, without an auxiliary point and without comparison image data to determine thereby, a pulley is imaged within the boundary of the spectacle frame.

Furthermore, the present invention comprises a system consisting of a device for determining a position of a pair of spectacles and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user in the zero viewing direction and a user

at least two image recording devices, which are each designed and arranged,

Comparative image data of at least a portion of the head of the

To create user in the absence of glasses and / or in the absence of at least one lens and at least a portion of an auxiliary structure and

To generate image data of a substantially identical subregion of the user's head with spectacles arranged thereon and / or at least one spectacle lens arranged thereon and at least of the subregion of the auxiliary structure;

- A data processing device which is designed based on the image data, based on the comparison image data and based on at least the portion of the auxiliary structure, the position of the spectacles and / or the at least one spectacle lens relative to the pupil center of the corresponding

Eye of the user in the zero direction to determine and

a data output device which is designed to adjust the position of the spectacles and / or of the at least one spectacle lens relative to the pupil center of the corresponding eye of the user

Output zero direction, includes.

LIST OF REFERENCE NUMBERS

10 device

12 pillar

14 upper camera 16 lateral camera

18 monitor

20 effective optical axis

22 effective optical axis

24 Intersection 26 Semitransparent mirror

28 bulbs

30 users

32 position

34 Position 36 Prescription lens rim / Spectacle rim

38 glasses

40 optical axis

42 beam splitter

44 first deflected portion of the optical axis 46 deflecting mirror

48 second deflected portion of the optical axis

50 spectacle lenses

52 spectacle frame

53 saddle point 54 right eye

56 left eye

58 pupil center 60 pupil center

62 Limit in box size

64 limit in box size

66 intersections 68 intersections

70 horizontal level

72 vertical level

74 intersections

76 intersections 78 horizontal plane

80 vertical level

82 reflexes

84 Straight

86 lower horizontal tangent 153 saddle point

253 saddle point

Claims

claims

1. Device (10) for determining a position of a pair of spectacles (38) and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user (30) in the zero viewing direction

at least two image recording devices (14, 16), which are each designed and arranged,

- Generating comparative image data of at least a portion of the head of the user in the absence of the glasses (38) and / or in the absence of the at least one spectacle lens (50) and at least a portion of an auxiliary structure (53) and

Image data of a substantially identical subregion of the user's head with spectacles (38) arranged thereon and / or at least one spectacle lens (50) arranged thereon and at least the image

To create part of the auxiliary structure (53);

- A data processing device which is designed, based on the image data, based on the comparison image data and based on at least the portion of the auxiliary structure (53), the position of the glasses (38) and / or the at least one spectacle lens (50) relative to the pupil center of the corresponding eye to determine the user (30) in the zero direction, and

a data output device which is adapted to the position of

Glasses (38) and / or the at least one spectacle lens (50) relative to the pupil center of the corresponding eye of the user (30) in To output zero sight direction.

2. Device according to claim 2, wherein the at least two image recording devices (14, 16) are each designed and arranged to image at least the partial region of the auxiliary structure in the generated image data in such a way that at least the partial region of the auxiliary structure (53) does not pass through the at least one spectacle lens (50) is shown through.

3. Device (10) according to one of the preceding claims, wherein the data processing device is designed to actually measured

Individual parameter of a use position of the at least one spectacle lens (50) in the system spectacle lens (50) and eye of the user of the at least one spectacle lens (50) with predetermined Individualparametem the use position of the at least one spectacle lens (50) in the system spectacle lens (50) and the user's eye to compare.

4. Device (10) according to one of the preceding claims, wherein the data processing device is designed to actually measured individual parameters of a use position of the glasses (38) in the system glasses (38) and head of the user of the glasses (38) with predetermined

Individualparametem the use position of the glasses (38) in the system glasses (38) and head of the user of the glasses (38) to compare.

5. Device (10) according to any one of the preceding claims, wherein the image pickup means (14, 16) are designed and arranged such that in the generated comparison image data of at least a portion of the head without spectacles arranged thereon (38) and / or without it at least one spectacle lens (50) at least one pupil of the user (30) and at least a portion of the auxiliary structure (53) is shown.

6. Device (10) according to one of the preceding claims, wherein the image recording devices (14, 16) are designed and arranged such that in the generated image data of at least a portion of the At least one region of the spectacles (38) and / or at least one region of the at least one spectacle lens (50) and at least the subregion of the auxiliary structure (53) are arranged on the head with glasses (38) arranged thereon and / or at least one spectacle lens (50) arranged thereon is.

7. Apparatus according to claim 6 and claim 5, wherein in the image data and the comparison image data, the identical auxiliary structure (53) is at least partially mapped.

8. Device (10) according to one of the preceding claims, wherein the at least two image recording devices (14, 16) are each designed and arranged in the image data at least the portion of the user's head with spectacles (38) arranged thereon and / or arranged thereon at least one spectacle lens (50) and at least one imaging means (153, 253) to image, wherein the presentation means (153,

253) is designed and arranged to represent at least one characteristic point of the at least one spectacle lens.

9. Device (10) according to claim 8, wherein the at least two image recording devices (14, 16) are each designed and arranged to display in the image data at least the partial area of the user's head with spectacles (38) arranged thereon with a first spectacle lens (50). and at least one first imaging means (153) and at least one second imaging means (253), the first imaging means (153) being designed and arranged to represent at least one characteristic point of the first spectacle lens (50) and said second presenting means (253) is configured and arranged to display at least one characteristic point of said second spectacle lens (50).

10. Device (10) according to claim 8 or 9, wherein the data processing device is designed, based on the image data at least the portion of the head of the user to a position of at least one spectacle lens (50) relative to the spectacle frame determine.

The device (10) according to claim 10, wherein the data processing device is designed to determine a position of each spectacle lens (50) relative to the spectacle frame on the basis of the image data, at least of the partial area of the user's head.

12. Device (10) according to claim 11, wherein the data processing device is designed to use the image data to determine the position of each characteristic point of a spectacle lens (50) or the position of each characteristic point of both spectacle lenses (50) in the box dimension of the corresponding spectacle lens (50). to determine.

13. The device (10) according to claim 12, wherein the data processing device is designed based on the image data, in particular based on the position of each characteristic point of each spectacle lens (50) in the reference frame of the box dimension of the corresponding spectacle lens actual centering data of the respective spectacle lens (50) relative to determine the spectacle frame.

The apparatus (10) of claim 13, wherein the data processing means is arranged to determine a deviation of the determined actual centering data of each spectacle lens (50) from predetermined theoretical centering data, wherein the predetermined theoretical centering data are those centering data on the basis of which corresponding spectacle lens (50) is arranged in the spectacle frame.

15. Device (10) according to one of the preceding claims, wherein the data processing device is designed in three-dimensional space the

Position of at least a portion of the auxiliary structure (53) relative to at least one pupil or at least one pupil center to determine in the zero direction, in three-dimensional space the position of the glasses (38) and / or at least one spectacle lens (50) relative to at least determine this subregion of the auxiliary structure (53) and determine therefrom in three-dimensional space the position of the spectacles (38) and / or the at least one spectacle lens (50) relative to the at least one pupil or the at least one pupil center in the zero viewing direction.

16. Device (10) according to one of the preceding claims, wherein the auxiliary structure (53) is at least one auxiliary point (53) with a planar extension.

17. Device (10) according to one of the preceding claims, wherein the data processing device further comprises a

User data determining device which is designed, based on the generated image data and the generated comparison image data user data at least a portion of the head or at least a portion of a system of the head and the thereon in use position glasses (38) of the user (30) or

System of at least one spectacle lens (50) and a corresponding eye, wherein the user data spatial information in three-dimensional space of predetermined points of the subsection of the head or the sub-area of the system include, in particular location information for at least one of the following points:

- Intersections (66, 74) of a reference plane in the user (30) horizontal plane (70, 78) with the Brillenglasrändern and / or the eyeglass detection edges (36) of the glasses (38), wherein the horizontal plane (70, 78) of the user (30) intersecting both pupils of the user (30) and parallel to the zero viewing direction of the user (30), the position of the pupils being determined by the position of the at least one auxiliary structure (53);

- Intersections (68, 76) of a reference plane in the user (30) vertical plane (72, 80) with the lens edges and / or the eyeglass detection edges (36) of the glasses (38), wherein the vertical plane (72, 80) of the user (30) is perpendicular to the horizontal plane (70, 78) of the user (30) and parallel to the zero viewing direction of the user and a pupil of the user (30) intersects, the position of the pupil being determined by the position of the at least one auxiliary structure (53);

- Limitations (62, 64) of at least one spectacle lens of the user after a dimension in Kastenmaß;

- Bridge center of the spectacle frame (52) of the glasses (38).

18. Device (10) according to one of the preceding claims, wherein the data processing device further comprises a

Parameter determining means for determining optical parameters and the optical parameters comprise at least one of the following values of the user (30):

- pupillary distance;

- Monocular pupillary distance;

- Corneal vertex distance according to reference point requirement and / or after eye pivot point request; - monocular centering point distance;

- Center point coordinates;

- disc distance;

- Decentration of the centering point;

- disc height and width; - disc center distance;

- spectacle lens tilt;

- frame angle;

- grinding height.

19. Device (10) according to one of the preceding claims, wherein in the operating position, the image recording devices (14, 16) are arranged within a spatial area, which is surrounded by a cone with a predetermined opening angle, wherein the apex of the cone in an environment of a predetermined reference point disposed is and the cone axis is arranged parallel to a predetermined direction, wherein operatively corresponds to the zero direction of the user (30) of the predetermined direction.

20. The device (10) of claim 19, wherein operatively corresponds to the location of one of the pupil of the user (30) or the location of a root of the nose of the user (30) approximately to the predetermined reference point.

21. Device (10) according to claim 19 or 20, wherein the opening angle is smaller than 90 °.

22. Device (10) according to claim 19 or 20, wherein the opening angle between about 60 ° and about 10 °, preferably between about 45 ° and about 20 °, more preferably about 30 °.

23. Device (10) according to one of the preceding claims, wherein effective optical axes (20, 22) of the image recording devices (14, 16) intersect at least almost and a cutting angle between about 60 ° and about 10 °, preferably between about 45 ° and about 20 °, more preferably about 30 °.

24. Device (10) according to one of the preceding claims, wherein operatively arranged the zero viewing direction of the user (30) substantially parallel to the effective optical axis (20, 22) of at least one of the image pickup devices (14, 16).

25. Device (10) according to any one of the preceding claims, wherein the effective optical axis (20, 22) of at least one of the image pickup devices (14, 16) is arranged substantially parallel to a horizontal direction in the reference frame of the earth.

26. Device (10) according to one of the preceding claims, wherein the at least two image recording devices (14, 16) are designed to generate the image data at the same time and the comparison image data at the same time produce.

27. Device (10) according to one of the preceding claims, wherein each of the image recording devices (14, 16) simultaneously generates comparison image data of at least a portion of the auxiliary structure (53) and the two eyes.

28. Device (10) according to one of the preceding claims, wherein each of the image recording devices (14, 16) at the same time image data of the spectacles (38) and / or the at least one spectacle lens (50) and at least one

Subregion of the auxiliary structure (53) generated.

29. Device (10) according to one of the preceding claims, wherein the image recording devices (14, 16) are designed to compare image data of the user (30) for a plurality of different viewing directions of the

To generate user.

The apparatus (10) of claim 29, wherein the data processing device is configured to determine a viewing behavior of the user (30) based on the plurality of comparison image data.

31. Device (10) for determining a position of a pair of spectacles (38) and / or at least one spectacle lens (50) relative to a pupil center of a corresponding eye of a user (30) in the zero viewing direction

at least one image recording device which is designed and arranged,

To create comparison image data of at least a portion of the head of the user in the absence of glasses and / or in the absence of the at least one spectacle lens (50) and at least a portion of an auxiliary structure (53) and

- Image data of a substantially identical portion of the head the user with spectacles arranged thereon and / or with at least one spectacle lens (50) arranged thereon and at least one subregion of the auxiliary structure (53);

at least one pattern projection device, which is designed and arranged to project predetermined pattern data onto at least partial areas of the user's head;

- A data processing device which is designed based on the image data, based on the comparison image data and based on an auxiliary structure

(53), the position of the glasses and / or the at least one spectacle lens

(50) relative to the pupil center of the corresponding eye in FIG

To determine the zero direction of the user (30), and

a data output device which is adapted to the position of

Glasses (38) and / or of the at least one spectacle lens (50) relative to the pupil center of the corresponding eye of the user (30) output in the zero direction.

32. A method for determining a position of spectacles (38) and / or at least one spectacle lens relative to a pupil center of a corresponding eye of a user (30) in the zero viewing direction, comprising the following steps:

Generating comparison image data of at least a subarea of the

The user's head in the absence of the spectacles (38) and / or in the absence of the at least one spectacle lens (50) and at least a portion of an auxiliary structure (53);

- generating image data of a substantially identical portion of the user's head with spectacles (38) arranged thereon and / or having at least one spectacle lens (50) and at least a portion of the auxiliary structure (53) arranged thereon; Determining the position of the spectacles (38) and / or the position of the at least one spectacle lens relative to the pupil center of a corresponding eye of the user (30) in the zero viewing direction based on the image data, on the basis of the comparison image data and on at least the subregion of the auxiliary structure (53) and

- Output the position of the glasses (38) and / or the at least one eye relative to the pupil center of the corresponding eye of the user (30) in the zero direction.

33. The method of claim 32, wherein in the generated image data, the at least one subregion of the auxiliary structure (53) is not imaged through the at least one spectacle lens (50).

34. The method according to claim 32 or 33 with the further step:

Comparing actually measured individual parameters of a position of use of the at least one spectacle lens (50) in the system spectacle lens (50) and eye of the user of the at least one spectacle lens (50) with predetermined individual parameters

Use position of the at least one spectacle lens (50) in the system spectacle lens (50) and eye of the user of the spectacle lens (50).

35. The method of claim 32, 33 or 34 with the further step:

Compare actual measured individual parameters of a use position of the spectacles 38 in the system spectacles 38 and head of the user of the spectacles 38 with predetermined individual parameters of the position of use of the spectacles 38 in the system spectacles 38 and head of the user of the spectacles (38).

36. The method according to any one of claims 32 to 35 with an initial step:

Represent at least one characteristic point of at least one Spectacle lens (50) based on at least one display means (153, 253).

37. The method of claim 36, wherein during the step of generating the image data, the at least one rendering means (153, 253) is imaged in the image data, and

before the step of determining the position of the spectacles (38) and / or the position of the at least one spectacle lens (50) relative to the pupil center of the corresponding eye or during the step of determining the position of the spectacles (38) and / or the position of the spectacle a position of at least one spectacle lens (50) relative to the spectacle frame on the basis of the image data, in particular the position of the at least one representation means (153, 253) is determined at least one spectacle lens (50) relative to the pupil center of the corresponding eye.

38. The method of claim 37, wherein during the step of determining the position of the at least one spectacle lens relative to the spectacle frame, actual centering data of the at least one spectacle lens relative to the spectacle frame based on the image data, in particular the position of the at least one presentation means (153, 253).

39. The method of claim 38, wherein a deviation of the determined, actual centering of predetermined theoretical Zentrierdaten is determined and wherein the predetermined theoretical Zentrierdaten are those Zentrierdaten, based on which the at least one spectacle lens (50) was arranged in the spectacle frame.

40. The method of claim 32, wherein the image data is generated under at least two different pickup directions and wherein the comparison image data is generated under at least two different pickup directions.

41. The method according to any one of claims 32 to 40, wherein the step of Determining the position of the spectacles (38) and / or the position of the at least one spectacle lens (50) comprises a step of determining a position of at least the portion of the auxiliary structure (53) in both the comparison image data and the image data.

42. The method of claim 41, wherein the step of determining the position of the spectacles (38) and / or the position of the at least one spectacle lens further

a step of determining the position of at least one pupil center in the zero-view direction relative to the at least one

Part of the auxiliary structure (53) in the comparison image data comprises and

a step of determining the position of the spectacles (38) and / or the position of the at least one spectacle lens (50) relative to the at least one portion of the auxiliary structure (53) of the image data.

43. The method according to any one of claims 32 to 42 with the further step:

Determining the position of the spectacles (38) and / or the position of the at least one spectacle lens (50) relative to the pupil center of the corresponding eye in the zero viewing direction due to the position of the spectacles and / or the at least one spectacle lens (50) relative to the at least one Part of the auxiliary structure (53) and the position of the at least a portion of the auxiliary structure (53) relative to the pupil center of the corresponding eye in the zero direction.

44. The method according to any one of claims 32 to 43 with the further step:

Determining the individual parameters based on the position of the spectacles (38) and / or the position of the at least one spectacle lens (50) relative to the at least one portion of the auxiliary structure (53) and the position of the at least one portion of the auxiliary structure (53) relative to the Pupillenmittelpunkt of the corresponding eye in the zero direction.

A computer program device comprising program parts which, when loaded in and executed by a computer, are suitable for carrying out a method according to any one of claims 32 to 44.