JP2017217119A - Ophthalmologic device and ophthalmologic device control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute alignment in a wide range appropriately.SOLUTION: An ophthalmologic device for examining an eye to be examined includes: an eye examining part having eye examining means for examining the eye to be examined, and face imaging means for capturing a photographic image including the face of a subject; adjusting means for relatively moving the eye examining part with respect to the eye to be examined; and calculation processing means for setting a region of interest based on the position of the eye examining part moved by the adjusting means in the photographic image, and processing an image signal in the region of interest.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to an ophthalmologic apparatus for inspecting an eye to be examined, and an ophthalmologic apparatus control program.

  As conventional ophthalmologic apparatuses, for example, an eye refractive power measuring apparatus, a corneal curvature measuring apparatus, an intraocular pressure measuring apparatus, a fundus camera, OCT, SLO, and the like are known. In these ophthalmologic apparatuses, it is common to move the optometry part up, down, left, and right, back and forth with respect to the eye to be examined by operating an operation member such as a joystick, and align the optometry part with a predetermined position with respect to the eye to be examined. (See Patent Document 1).

  In addition, in the conventional ophthalmologic apparatus, an ophthalmologic apparatus that captures a face of a subject and performs alignment over a wide range has been proposed (see Patent Document 2).

JP2013-066760 JP-A-10-216089

  However, the current commercially available ophthalmic apparatus is accompanied by the operation of the examiner using the operation member until the eye to be examined is found, and an apparatus capable of wide-range alignment has not been realized. In other words, there are various considerations in realizing an apparatus capable of alignment over a wide range. In view of the above, the present inventors have devised a prototype of an apparatus capable of a wide range of alignment.

  In view of the above problems, it is an object of the present disclosure to provide an ophthalmologic apparatus and an ophthalmologic apparatus control program that can suitably perform alignment in a wide range.

  In order to solve the above problems, the present disclosure is characterized by having the following configuration.

(1) An ophthalmic apparatus for inspecting an eye to be examined,
An optometry unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined;
An arithmetic processing unit that sets a region of interest based on the position of the optometry unit moved by the adjusting unit in the captured image and processes an image signal in the region of interest;
It is characterized by providing.
(2) An ophthalmologic apparatus control program executed in an ophthalmologic apparatus for inspecting an eye to be examined,
The ophthalmic device comprises:
An optometric unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined,
The ophthalmic apparatus control program is executed by a processor of the ophthalmic apparatus,
An arithmetic processing step for setting a region of interest based on the position of the optometry unit moved by the adjusting means in the captured image and processing an image signal in the region of interest,
The ophthalmologic apparatus is executed.
(3) An ophthalmic apparatus for inspecting an eye to be examined,
An optometry comprising: an optometry means for examining the eye to be examined; a face illumination optical system; and a face photographing means for photographing a photographed image including the face of the subject illuminated by the face illumination optical system. And
Adjusting means for moving the optometry part relative to the eye to be examined;
Arithmetic processing means for controlling an illumination condition by the face illumination optical system based on the position of the optometry unit moved by the adjustment means.
(4) An ophthalmic apparatus for inspecting an eye to be examined,
An optometry unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined;
An arithmetic processing means for setting a region of interest for at least a part of the face of the subject in the captured image and processing an image signal in the region of interest;
It is characterized by providing.

It is the schematic which shows the external appearance of a present Example. It is a block diagram which shows the control system of a present Example. It is the schematic which shows the optical system of a present Example. It is a figure which shows the control action at the time of the measurement of a present Example. It is a figure which shows the control operation | movement of the full auto alignment of a present Example. It is a figure which shows an example of auto gain control. It is a figure which shows the example of switching to the position of ROI according to the position of an optometry part. It is a figure which shows an example in the case of changing face illumination according to the position of an optometry part. It is a figure which shows an example of the area | region of the solid | solid considered that the left and right eyes exist in a three-dimensional real space. It is a figure which shows an example for calculating | requiring where on the picked-up image the vertex of the solid of the region of interest on real space is projected. It is a figure for demonstrating distortion of a camera image. It is a figure which shows an example in the case of setting the region of interest ROI based on the three-dimensional position of an optometry part to the picked-up image of a face imaging | photography part.

<Embodiment>
Hereinafter, an embodiment of an ophthalmologic apparatus according to the present disclosure will be described. The ophthalmologic apparatus of this embodiment inspects an eye to be examined, for example. The ophthalmologic apparatus may be, for example, an eye refractive power measuring device, a corneal curvature measuring device, a corneal shape measuring device, an intraocular pressure measuring device, an axial length measuring device, a fundus camera, OCT, SLO, an ultrasonic optometry device, or the like. .

  The ophthalmologic apparatus may include an optometry unit (also referred to as an apparatus main body), an adjustment unit, and an arithmetic processing unit. The optometry unit may include, for example, an optometry system and a face photographing unit. The optometry system may include a configuration for inspecting the eye to be examined, and may be, for example, an inspection optical system, an ultrasonic measurement system, or the like. The optometry system may be built in the optometry unit or provided on the outer surface of the housing of the optometry unit.

  The face photographing unit may be provided for photographing a photographed image including the face of the subject. For example, the face photographing unit may include a photographing optical system including an imaging element or another photographing system may be used. Good. The face photographing unit may be built in the optometry unit or provided on the outer surface of the housing of the optometry unit. The face photographing unit may be, for example, a face photographing unit capable of photographing a subject's face including at least both eyes, or a face photographing unit capable of photographing one eye of the subject over a wide range. Good. The face photographing unit may also be used as an anterior eye part photographing part for photographing the anterior eye part of the eye to be examined, or may be provided separately from the anterior eye part photographing part.

  The adjustment unit may be used as a moving unit for moving the optometric unit relative to the eye to be examined. For example, the adjusting unit includes a drive unit (actuator), and the optometry unit is driven by the drive unit. May be moved. The adjustment unit may adjust the relative position between the eye to be examined and the optometry unit in at least one direction. Of course, you may adjust three-dimensionally. For example, the adjustment unit moves the optometry unit in the left / right (X) direction, the up / down (Y) direction, and the front / rear (Z) direction with respect to the eye to be examined.

  The arithmetic processing unit may process the captured image, and may be, for example, a processor. The photographed image may be, for example, a photographed image photographed by the face photographing unit or a photographed image photographed by the anterior eye photographing unit. The arithmetic processing unit may be, for example, an arithmetic control unit for processing captured images and controlling the apparatus, or an image processing unit for processing captured images. The arithmetic processing unit may be provided on the photographing unit side. Note that the arithmetic processing unit may be constructed by a combination of the arithmetic control unit and the image processing unit.

  The arithmetic processing unit may control the apparatus by processing an image signal of an image captured by a photographing unit (for example, a face photographing unit or an anterior eye photographing unit), for example. The control of the apparatus may be, for example, control of imaging conditions by the imaging unit and movement control (alignment adjustment) of the optometry unit with respect to the eye to be examined.

<Setting of region of interest (for example, see FIGS. 6 and 12)>
The arithmetic processing unit may set a region of interest in the captured image photographed by the face photographing unit and process an image signal in the set region of interest. In this case, the arithmetic processing unit may set a region of interest for detecting at least a part of the subject's face, for example, may set a region of interest for detecting the eye to be examined. A region of interest may be set to detect at least part of the skin of the subject's face. In this case, an arbitrary part of the entire face may be set as the region of interest, or a predetermined part (for example, an eye) in the entire face may be set as the region of interest.

  For example, the arithmetic processing unit may detect an eye to be examined by processing the image signal in the region of interest, or may process an image signal in the region of interest to obtain an evaluation value for controlling the imaging conditions of the face imaging unit. May be obtained. The evaluation value in this case may be, for example, an evaluation value for evaluating the brightness of the subject's face.

  For example, the arithmetic processing unit may control the apparatus based on the image signal in the region of interest. In this case, the arithmetic processing unit may control the photographing condition by the face photographing unit based on the image signal in the region of interest (see, for example, FIG. 6), or the optometry by the adjusting unit based on the image signal in the region of interest. You may control the movement of a part (for example, refer FIG. 12). As the control of the photographing conditions, for example, auto gain control and automatic exposure time control of the face photographing unit may be used. The arithmetic processing unit controls the photographing conditions by the face photographing unit based on the image signal in the region of interest, and controls the movement of the optometry unit by the adjusting unit based on the photographed image acquired under the controlled photographing conditions. May be. The arithmetic processing unit may automatically control the illumination condition of the face illumination optical system based on the image signal in the region of interest.

  In setting the region of interest, the arithmetic processing unit may set, for example, a region of interest based on the position of the optometry unit moved by the adjustment unit in the captured image. In this case, the position of the region of interest on the captured image corresponding to the position of the optometry unit may be stored in advance in the storage unit, and the arithmetic processing unit is based on the position of the region of interest stored in advance in the storage unit. Region of interest may be set. In this case, the region of interest may be set on the captured image based on the positional relationship between the subject supported by the face support unit and the optometry unit.

  Here, by setting the region of interest based on the position of the optometry unit, for example, at least a part of the face of the subject can be easily identified, and the processing on the image signal of at least a part of the face is smoothly performed. be able to. When detecting at least a part of a face based on a photographed image from the face photographing unit, it may be difficult to detect due to the influence of noise light or the like. Here, it is possible to easily detect at least a part of the face by processing the image signal in the region of interest set in consideration of the positional relationship between the optometry unit and the subject.

  In addition, since the formation position of the face image (at least a part of the face) in the photographed image varies depending on individual differences in the face of the subject, the region of interest may be set in consideration of these. Further, when the image signal in the region of interest is preferentially processed and at least a part of the face is not detected, the detection process may be performed on the entire captured image.

  Of course, when the region of interest is set for at least a part of the face of the subject in the captured image and the image signal in the region of interest is processed, the arithmetic processing unit does not use the position information of the optometry unit, At least a part may be specified by image processing.

  For example, the arithmetic processing unit controls the photographing conditions by the face photographing unit based on the image signal in the region of interest specified by the image processing, and processes the photographed image acquired after controlling the photographing conditions to detect the eye to be examined. May be. Thereby, for example, the eye can be detected in a state in which the contrast between the skin of the subject and the eye is adjusted. In this case, for example, at least a part of the subject's face whose region of interest may be set on the entire face of the subject or at least a part of the skin of the subject's face is, for example, the subject's face It may be specified using a luminance difference between the face and the background, pattern patching, or the like.

<Changing the position of the region of interest according to the position of the optometry unit (for example, see FIG. 7)>
When the region of interest is set based on the position of the optometry unit, for example, the arithmetic processing unit may change the position of the region of interest in the captured image in accordance with a change in the position of the optometry unit. As a result, even when the positional relationship between the subject's face and the optometry unit varies due to a change in the position of the optometry unit, at least a part of the subject's face can be reliably detected.

  When the subject's face is properly supported by the face support unit, the left and right centers of the subject's face are positioned around the center position of the device, and as a result, the subject's face is positioned and the left and right eyes Is also positioned.

  The position of the face in the photographed image varies depending on the position of the face photographing unit with respect to the face. For example, when the face photographing unit is positioned in front of the face, the face of the subject is formed in a certain region including the imaging center (for example, the optical axis position) in the photographed image. On the other hand, when the face photographing unit is arranged on the right side (viewed from the apparatus) with respect to the face, the face is formed in the left region with respect to the imaging center. Further, when the face photographing unit is arranged on the left side with respect to the face, a region on the right side with respect to the imaging center is formed. Of course, even when the face photographing unit moves up and down with respect to the face, the position of the subject's face changes in the vertical direction. The change in the positional relationship is the same in the positions of the left and right eyes in the captured image.

  Since the position of the face photographing unit has a pair relationship with the position of the optometry unit, the arithmetic processing unit sets the region of interest in the photographed image based on the position information of the optometry unit, thereby Can be reliably detected.

  In this case, the correspondence between the position of the region of interest on the captured image and the position of the optometry unit may be stored in advance in the storage unit. For example, the position of the region of interest corresponding to each position of the optometry unit may be stored in advance, or the position of the region of interest corresponding to the reference position of the optometry unit may be stored in advance, and the optometry unit from the reference position The movement amount of the region of interest corresponding to the movement distance may be stored in advance.

  The arithmetic processing unit acquires position information of the optometry unit based on a detection signal from a position detection sensor for detecting the position of the optometry unit, and sets a region of interest corresponding to the acquired position information. May be. The position detection sensor may have various changes. For example, the position detection sensor may be a potentiometer provided on a base that holds the optometric unit movably, an encoder provided on the motor unit of the drive unit, or the like. It may be.

  When changing the position of the region of interest according to the position of the optometry unit, for example, the arithmetic processing unit shifts the region of interest on the captured image with respect to the left and right direction according to a change in the position of the optometry unit in the left and right direction. You may do it. Thereby, even when the optometric part is moved to the left and right, at least a part of the face can be detected smoothly.

  Further, for example, the arithmetic processing unit may shift the region of interest on the captured image in accordance with a change in the three-dimensional position of the optometry unit. Thereby, even when the optometric unit is moved three-dimensionally, at least a part of the face can be detected smoothly.

<Setting of region of interest corresponding to predetermined position (for example, see FIG. 6)>
When the region of interest is set based on the position of the optometry unit, for example, the arithmetic processing unit may set a region of interest corresponding to a predetermined position of the optometry unit set in advance in the captured image. Accordingly, when processing the image signal from the face photographing unit in a state where the optometry unit is arranged at a predetermined position, the position of at least a part of the face is specified, so at least a part of the face of the subject Can be reliably detected.

  At the stage of photographing by the face photographing unit, the arithmetic processing unit places the optometry unit at a predetermined position set in advance, for example. The predetermined position may be an initial position. The predetermined position may be stored in the storage unit. In this case, for quick alignment with the eye to be examined, a position where the examination axis (for example, the optical axis of the optometry optical system) is arranged on the side closer to either the left or right eye may be set as the predetermined position. Of course, the predetermined position may be a position where the inspection axis is arranged between the left and right eyes.

  When arranging the optometry unit at a predetermined position, the arithmetic processing unit may set a region of interest corresponding to the predetermined position of the optometry unit and process an image signal in the set region of interest. For example, the position of the region of interest corresponding to the predetermined position may be set to a position where at least a part of the face of the subject is formed in the captured image when the optometry unit is disposed at the predetermined position.

<Auto gain control (for example, see FIG. 7)>
When controlling the shooting conditions by the face photographing unit based on the image signal in the region of interest, for example, the arithmetic processing unit may perform auto gain control of the face photographing unit based on the image signal in the region of interest. Here, the brightness of the face image is adjusted to an allowable level by performing auto gain control based on the image signal in the region of interest set based on the position of the optometry unit. Thereby, even if there is an influence of disturbance light or the like, the position of the face is specified, and the contrast between the face and the eye of the subject is adjusted. As a result, for example, eye detection in a captured image can be reliably performed, and smooth alignment with respect to the eye to be examined is possible.

  In order to accurately adjust the contrast between the skin and eyes of the subject's face, it corresponds to the position of the optometry part so that the image area where at least part of the skin of the face is formed is set as the region of interest. A region of interest may be set. Further, in order not to set the region of interest other than the face image (for example, background, hair, etc.), the image area of the optometry unit is set so that the image region where the center of the subject's face is formed is set as the region of interest. A region of interest may be set corresponding to the position.

  The position, size, and the like of the region of interest in the captured image can be set as appropriate within a range in which the auto gain related to the face can be adjusted. The size of the region of interest is preferably at least smaller than the image region of an average person's face image (because the background portion is not included). Here, the region of interest may be set for auto gain control on the face image. The shape of the region of interest may be, for example, a rectangle or a circle, but is not particularly limited as a shape for extracting a specific image region.

  When placing the optometry unit at a predetermined position, the arithmetic processing unit sets a region of interest corresponding to the predetermined position of the optometry unit, analyzes the image signal in the region of interest, and performs auto gain control. Also good. In addition, the arithmetic processing unit may change the position of the region of interest according to the position of the optometry unit, analyze the image signal in the changed region of interest, and perform auto gain control.

  At the time of auto gain, the image signal in the analysis region may be analyzed and an evaluation value for performing auto gain may be acquired. The evaluation value for the auto gain may be an average luminance in the region of interest, a cumulative luminance value of each pixel in the region of interest, or a maximum luminance value in the region of interest. Further, an image contrast, a histogram, or the like in the region of interest may be used as the evaluation value.

  In the auto gain control, for example, an auto gain function provided in an image sensor (for example, a CMOS camera) provided in the face photographing unit may be used. In this case, for example, the control unit of the apparatus sets the position information of the region of interest with respect to the arithmetic processing unit provided in the image sensor, so that the auto gain is based on the image signal in the set region of interest. Control is performed. Further, when the image sensor itself is not provided with an auto gain function, image analysis may be performed on the control unit of the apparatus, and gain may be controlled based on the result of the image analysis. In the above description, the automatic gain control of the face photographing unit is performed based on the image signal in the region of interest. However, the exposure time of the face photographing unit 90 is automatically set based on the image signal in the region of interest. In the case of controlling, the above embodiment can be applied.

<Eye position detection (see, for example, FIG. 12)>
For example, the arithmetic processing unit may detect the position of the eye in the captured image based on the image signal in the region of interest set based on the position of the optometry unit. As a result, the position of the eye to be examined can be specified by using the position of the optometry part, so that, for example, eye detection in the captured image can be performed reliably, and smooth alignment with the eye to be examined is possible. In addition, as a specific method of eye detection, an index (for example, an anterior segment reflection image) formed on the eye may be detected, or a characteristic part of the eye (for example, pupil, iris, sclera, blood vessel, etc.) ) May be detected. The region of interest may be set as a search range for searching for an eye in the captured image.

  In order to accurately detect the eyes in the captured image, the region of interest may be set corresponding to the position of the optometric unit so that the image region in which the eye to be examined is formed is set as the region of interest. When the captured image includes left and right eyes, the region of interest is set corresponding to the position of the optometric unit so that an image region in which at least one of the left and right eyes of the subject is formed is set as the region of interest. May be. Note that different regions of interest may be set for the left and right eyes, or regions of interest including the left and right eyes may be set.

  The position, size, and the like of the region of interest in the captured image can be set as appropriate in consideration of individual positions of the distance between the pupils and individual differences in the vertical position of the eyes due to differences in face size. Further, in order to detect eyes in the region of interest, the region of interest may be set to a size that includes the entire face image.

  When placing the optometry unit at a predetermined position, the arithmetic processing unit may set a region of interest corresponding to the predetermined position of the optometry unit, analyze the image signal in the region of interest, and perform eye detection. Good. By setting the region of interest corresponding to the predetermined position, the influence of an image region (for example, background, hair, etc.) that causes noise is reduced, and the position of the eye on the face is detected.

  The arithmetic processing unit may change the position of the region of interest according to the position of the optometry unit, and perform eye detection by analyzing the image signal in the changed region of interest. As a result, regardless of the position of the optometry part, the influence of the image area that causes noise is reduced, and the position of the eye on the face is detected.

  When the eye position is detected in the captured image, the arithmetic processing unit may perform automatic alignment of the optometry unit with respect to the eye to be examined by controlling the driving unit based on the detection result of the eye position. .

  Note that the arithmetic processing unit performs auto gain control based on the image signal in the region of interest, and detects the position of the eye based on the image signal in the region of interest set in the captured image adjusted by the auto gain. Good. In this case, the region of interest for eye position detection may be different in position and / or size from the region of interest for auto gain. As a result, various controls can be performed with high accuracy. Of course, the present invention is not limited to this, and regions of interest having the same position and size may be used for auto gain and eye position detection.

<Transformation>
In the above description, the photographing conditions of the face photographing unit are controlled according to the position of the optometry unit. However, the present invention is not limited to this, and illumination by the face illumination optical system is performed according to the position of the optometry unit. The conditions may be controlled (see FIG. 8).
<Example>
An ophthalmologic apparatus according to the present disclosure will be described based on the drawings. In the following description, an ocular refractive power measurement device will be described as an example of an ophthalmic device, but a corneal curvature measurement device, a corneal shape measurement device, an intraocular pressure measurement device, an axial length measurement device, a fundus camera, an OCT (optical coherence) tomography) and SLO (Scanning Laser Ophthalmoscope).

The ophthalmologic apparatus of the present embodiment objectively measures the eye refractive power of the eye to be examined, for example. For example, the ophthalmologic apparatus according to the present embodiment may perform measurement for each eye, or may be an apparatus that performs measurement for both eyes simultaneously (by binocular vision). The ophthalmologic apparatus mainly includes, for example, an optometry unit, an imaging unit, a drive unit, and a control unit.
<Appearance>
The external appearance of the ophthalmologic apparatus will be described based on FIG. As shown in FIG. 1, the ophthalmologic apparatus 1 of this embodiment mainly includes an optometry unit 2, a face photographing unit 90, and a drive unit 4. The optometry unit 2 examines the eye to be examined. The optometry unit 2 may include, for example, an optical system that measures the eye refractive power, corneal curvature, intraocular pressure, and the like of the eye to be examined. Further, the optometry unit 2 may include an optical system for photographing the anterior eye part, the fundus, and the like of the eye to be examined. In this embodiment, the optometry unit 2 that measures refractive power will be described as an example. For example, the face photographing unit 90 photographs the face of the eye to be examined. For example, the face photographing unit 90 photographs a face including at least one of the left and right eye to be examined. For example, the drive unit 4 moves the optometry unit 2 and the imaging unit 3 in the up / down / left / right front-rear direction (three-dimensional direction) with respect to the base 5.

Furthermore, the ophthalmologic apparatus 1 of the present embodiment may include, for example, a housing 6, a display unit 7, an operation unit 8, a face support unit 9, and the like. For example, the housing 6 houses the optometry unit 2, the face photographing unit 90, the drive unit 4, and the like. The display unit 7 displays, for example, an observation image of the eye to be examined, a measurement result, and the like. For example, the display unit 7 may be provided integrally with the device 1 or may be provided separately from the device. The ophthalmologic apparatus 1 may include an operation unit 8. The operation unit 8 is used for various settings of the apparatus 1 and operations at the start of measurement. Various operation instructions by the examiner are input to the operation unit 8. For example, the operation unit 8 may be various human interfaces such as a touch panel, a joystick, a mouse, a keyboard, a trackball, and a button. The face support unit 9 may include, for example, a forehead pad 10 and a chin rest 11. The chin rest 11 may be moved in the vertical direction by driving the chin rest driving unit 12.
<Control system>
As shown in FIG. 2, the apparatus 1 includes a control unit 70. The control unit 70 manages various controls of the apparatus 1. The control unit 70 includes, for example, a general CPU (Central Processing Unit) 71, a ROM 72, a RAM 73, and the like. For example, the ROM 72 stores an ophthalmologic apparatus control program for controlling the ophthalmologic apparatus, initial values, and the like. For example, the RAM temporarily stores various information. The control unit 70 is connected to the optometry unit 2, the face photographing unit 90, the drive unit 4, the display unit 7, the operation unit 8, the chin rest drive unit 12, the storage unit (for example, a non-volatile memory) 74, and the like. The storage unit 74 is, for example, a non-transitory storage medium that can retain stored contents even when power supply is interrupted. For example, a hard disk drive, a removable USB flash memory, or the like can be used as the storage unit 74. Further, a position detection sensor 75 for detecting the position of the optometry unit 2 is connected to the control unit 70.
<Optometry section>
The optometry unit 2 performs measurement, examination, imaging, etc. of the eye to be examined. The optometry unit 2 may include, for example, a measurement optical system that measures the refractive power of the eye to be examined. For example, as shown in FIG. 3, the optometry unit 2 includes a measurement optical system 20, a fixation target presentation optical system 40, an index projection optical system 50, and an observation optical system (imaging optical system) 60. May be.

  The measurement optical system 20 includes a projection optical system (light projecting optical system) 20a and a light receiving optical system 20b. The projection optical system 20a projects a light beam onto the fundus oculi Ef through the pupil of the eye to be examined. In addition, the light receiving optical system 20b takes out a reflected light beam (fundus reflected light) from the fundus oculi Ef via the periphery of the pupil in a ring shape, and captures a ring-shaped fundus reflection image mainly used for measuring refractive power.

  The projection optical system 20a has a measurement light source 21, a relay lens 22, a hall mirror 23, and an objective lens 24 on the optical axis L1. The light source 21 projects a spot-like light source image from the relay lens 22 to the fundus oculi Ef through the objective lens 24 and the pupil center. The light source 21 is moved in the direction of the optical axis L1 by the moving mechanism 33. The hall mirror 23 is provided with an opening through which the light beam from the light source 21 through the relay lens 22 passes. The hall mirror 23 is disposed at a position optically conjugate with the pupil of the eye to be examined.

  The light receiving optical system 20b shares the hall mirror 23 and the objective lens 24 with the projection optical system 20a. The light receiving optical system 20b includes a relay lens 26 and a total reflection mirror 27. Further, the light receiving optical system 20 b has a light receiving stop 28, a collimator lens 29, a ring lens 30, and an image sensor 32 on the optical axis L <b> 2 in the reflection direction of the Hall mirror 23. As the imaging element 32, a two-dimensional light receiving element such as an area CCD can be used. The light receiving aperture 28, the collimator lens 29, the ring lens 30, and the image sensor 32 are moved by the moving mechanism 33 in the direction of the optical axis L2 integrally with the measurement light source 21 of the projection optical system 20a. When the light source 21 is disposed at a position optically conjugate with the fundus oculi Ef by the moving mechanism 33, the light receiving aperture 28 and the image sensor 32 are also disposed at positions optically conjugate with the fundus oculi Ef.

  The ring lens 30 is an optical element for shaping the fundus reflection light guided from the objective lens 24 through the collimator lens 29 into a ring shape. The ring lens 30 has a ring-shaped lens portion and a light shielding portion. Further, when the light receiving aperture 28 and the image sensor 32 are disposed at a position optically conjugate with the fundus oculi Ef, the ring lens 30 is disposed at a position optically conjugate with the pupil of the eye to be examined. The image sensor 32 receives ring-shaped fundus oculi reflection light (hereinafter referred to as a ring image) via the ring lens 30. The image sensor 32 outputs image information of the received ring image to the CPU 71. As a result, the CPU 71 performs display of the ring image on the display unit 7, calculation of refractive power based on the ring image, and the like.

  As shown in FIG. 3, in this embodiment, a dichroic mirror 39 is disposed between the objective lens 24 and the eye to be examined. The dichroic mirror 39 transmits light emitted from the light source 21 and fundus reflected light corresponding to the light from the light source 21. The dichroic mirror 39 guides a light beam from a fixation target presenting optical system 40 described later to the eye to be examined. Further, the dichroic mirror 39 reflects the anterior segment reflected light of light from the index projection optical system 50 described later, and guides the anterior segment reflected light to the observation optical system 60.

  As shown in FIG. 3, an index projection optical system 50 is arranged in front of the eye to be examined. The index projection optical system 50 mainly projects an index used for alignment (alignment) of the optical system with respect to the eye to be examined on the anterior eye segment. In this case, the index projection optical system 50 projects an index used for alignment (alignment) on at least one of the XY direction and the Z direction of the optical system with respect to the eye to be examined. It should be noted that alignment detection may be performed by detecting a characteristic part in the anterior segment image without using the index projection optical system 50. Of course, the alignment may be detected by using both the index detection and the feature part detection.

  The index projection optical system 50 includes, for example, a ring index projection unit 51 and an index projection unit 52. The ring index projection unit 51 projects diffused light onto the cornea of the subject's eye E and projects a ring index (so-called Mayer ring). The ring index projection unit 51 is also used as anterior ocular segment illumination that illuminates the anterior segment of the subject's eye E in the ophthalmologic apparatus 1 of the present embodiment. The index projection unit 52 projects parallel light onto the cornea of the eye to be examined and projects an infinity index.

  The optotype presenting optical system 40 is provided on the optical axis L4 in the reflection direction of the light source 41, the fixation target 42, the relay lens 43, and the reflection mirror 46. The fixation target 42 is used to fix the eye to be examined when measuring objective refractive power. For example, the fixation target 42 is illuminated by the light source 41 and is presented to the eye to be examined.

  The light source 41 and the fixation target 42 are integrally moved in the direction of the optical axis L4 by the drive mechanism 48. The presentation position (presentation distance) of the fixation target may be changed by moving the light source 41 and the fixation target 42. As a result, the refractive power can be measured by applying fog to the eye to be examined.

The anterior imaging optical system 60 includes an imaging lens 61 and an imaging element 62 on the optical axis L3 in the reflection direction of the half mirror 63. The image sensor 62 is disposed at a position optically conjugate with the anterior segment of the eye to be examined. The image sensor 62 images the anterior segment illuminated by the ring index projection unit 51. An output from the image sensor 62 is input to the CPU 71. As a result, the anterior eye image Ia of the eye to be examined imaged by the image sensor 62 is displayed on the display unit 7 (see FIG. 2). In the image sensor 62, an alignment index image (in this embodiment, a ring index and an infinity index) formed on the cornea of the eye to be examined is captured by the index projection optical system 50. As a result, the CPU 71 can detect the alignment index image based on the imaging result of the imaging element 62. Further, the CPU 71 can determine the suitability of the alignment state based on the position where the alignment index image is detected.
<Face shooting part>
The face photographing unit 90 is an optical system for photographing a face including at least one of the left and right eye to be examined, for example. For example, as shown in FIG. 3, the face photographing unit 90 of the present embodiment mainly includes, for example, an imaging element 91 and an imaging lens 92. Note that a visible light cut filter may be disposed in the optical path of the face photographing unit 90 to limit noise light due to visible light.

  The face photographing unit 90 of this embodiment is moved together with the optometry unit 2 by the driving unit 4. Of course, the face photographing unit 90 may be configured to be fixed to the base 5 and not move, for example.

The photographing lens 92 may be a wide angle lens, for example. The wide-angle lens is, for example, a fisheye lens or a conical lens. By providing the wide-angle lens, the face photographing unit 90 can photograph the face of the subject with a wide angle of view. The angle of view is, for example, 87 ° or more. Thus, the face photographing unit 90 can easily photograph both eyes of the subject.
<Face lighting optical system>
The face illumination optical system 80 illuminates the face of the eye to be examined. The face illumination optical system 80 includes an illumination light source 81, for example. For the face illumination optical system 80, for example, a light source with low directivity is used. The face illumination optical system 80 may be a face illumination optical system that illuminates the subject's face with infrared light. Here, the face photographing unit 90 detects visible light reflected by the infrared light by cutting the visible light. In this case, noise light due to infrared light may be incident on the face photographing unit 90. Therefore, by setting the region of interest ROI for auto gain and eye detection in the photographed image, the influence of infrared light noise Can be reduced.
<Control method>
Hereinafter, the control operation of the apparatus 1 will be described. For example, in order to inspect the eye to be inspected, the apparatus 1 performs alignment between the optometry unit 2 and the eye to be inspected fully automatically (full auto).

  A flowchart of the full auto measurement is shown in FIG. For example, after performing the measurement, the control unit 70 performs full auto alignment, and performs alignment between the eye E and the optometry unit 2. Thereafter, the eye is measured, the optometry unit 2 is moved to the other eye, and full auto alignment is performed again. When the alignment is completed, the control unit 70 measures the eye to be examined and ends the process. Hereinafter, each step will be described.

{Step S100: Adjustment of chin rest}
In step S100, the control unit 70 performs chin rest adjustment. Details of chin rest adjustment will be described later. When the chin rest adjustment is completed, the control unit 70 proceeds to step S200.

{Step S200: Fully automatic alignment (1)}
In step S200, the control unit 70 performs full auto alignment with respect to one of the left and right eyes. For example, the control unit 70 detects the eye of the subject from the face image photographed by the face photographing unit 90 and moves the optometry unit 2 in that direction. At this time, the control unit 70 may detect the alignment index projected by the index projection optical system 50 from the anterior segment image of the eye to be examined photographed by the anterior segment observation optical system 60. When the rough alignment is performed based on the information of the eye to be examined detected from the face image, when the alignment index is detected from the anterior eye image, the control unit 70 performs fine alignment using the alignment index. For example, the control unit 70 moves the optometry unit 2 so that the position of the alignment index becomes a predetermined position, and completes the alignment.

{Step S300: Measurement (1)}
In step S300, the control unit 70 examines the eye to be examined. For example, the control unit 70 irradiates the fundus of the subject's eye with the measurement light, and measures the eye refractive power of the subject's eye based on the detection result of the measurement light reflected by the fundus.

{Step S400: Left and right eye switching}
In step S400, the control unit 70 switches the eye to be measured. For example, the control unit 70 moves the optometry unit 2 from the eye that has been examined in step S300 to the other eye.

{Step S500: Fully automatic alignment (2)}
In step S500, the control unit 70 performs full auto alignment on the subject eye that has not been inspected, as in step S200.

{Step S600: Measurement (2)}
In step S600, the control unit 70 examines the other eye to be examined.

<From measurement preparation to measurement>
Next, the control from the measurement preparation in step S100 to the measurement in step S300 will be described in more detail with reference to FIG. For example, the control unit 70 detects both eyes of the subject from the face image photographed by the face photographing unit 90.

{Step S110: Face Image Analysis}
In step S110, the control unit 70 positions the optometry unit 2 at a preset initial position. In this case, for example, the control unit 70 may position the optometry unit 2 at the initial position stored in the storage unit 74. The control unit 70 may place the optometry unit 2 at the initial position by detecting that the optometry unit 2 has reached the initial position by the position detection sensor 75. The control unit 70 illuminates the face with the face illumination optical system 80 and detects the position of at least one of the left and right eyes based on the imaging signal from the face photographing unit 90.

{Step S120: Anterior Eye Image Analysis}
In step S120, the control unit 70 analyzes the anterior ocular segment image based on the imaging signal from the anterior ocular photographing optical system 60, and performs detection processing for the eye to be examined. For example, the control unit 70 analyzes an anterior ocular segment image and performs detection processing of an index or an eye characteristic part.

{Step S130: Determination of Eye Detection>
In step S130, the control unit 70 determines whether or not the eye to be inspected has been detected based on the imaging signal from the anterior eye photographing optical system 60 in the detection process of step S120. When the eye to be examined is detected, the control unit 70 skips the chin rest adjustment in step S <b> 140 and proceeds to position adjustment of the optometry unit 2 by the anterior eye photographing optical system 60. If the eye to be examined is not detected, the process proceeds to step S140.

{Step S140: Jaw support adjustment}
In step S140, for example, the control unit 70 controls the chin rest drive unit 12 to adjust the height of the chin rest. The control unit 70 controls the chin rest drive unit 12 based on the analysis result of step S110 to adjust the height of the chin rest. In this case, the control unit may adjust the height of the chin rest by controlling the chin rest driving section 12 so that the eye to be examined is disposed within the movable range of the optometry section 2. If chin rest adjustment is not necessary, the process may move to step S180.

{Step S150: Second face image analysis}
When the height adjustment of the chin rest is completed, in step S150, the control unit 70 detects at least one of the left and right eyes based on the imaging signal from the face imaging unit 90. .

{Step S160: Second Anterior Eye Image Analysis}
In step S120, the control unit 70 analyzes the anterior ocular segment image based on the imaging signal from the anterior ocular photographing optical system 60, and performs detection processing for the eye to be examined.

{Step S170: Second Eye Detection Determination}
In step S170, the control unit 70 determines whether or not the eye to be examined has been detected in the detection process of step S160. When the eye to be examined is detected, the control unit 70 skips the position adjustment of the optometry unit 2 by the face photographing unit 90 and shifts to the position adjustment of the optometry unit 2 by the anterior eye photographing optical system 60. If the eye to be examined is not detected, the process proceeds to step S180.

{Step S180: Position Adjustment by Face Shooting Unit}
In step S180, the control unit 70 controls the drive unit 4 based on the imaging signal from the face photographing unit 90, for example, and adjusts the position of the optometry unit 2. The control unit 70 detects the eye position based on the imaging signal from the face photographing unit 90. The control unit 70 controls the drive unit 4 based on the position detection result and adjusts the three-dimensional position of the optometry unit 2. In this case, the control unit may adjust the position of the optometry unit 2 by controlling the drive unit 4 so that the eye to be examined is arranged within the range where the anterior imaging optical system 60 can shoot.

{Step S190: Position Adjustment by Anterior Eye Photography Optical System 60}
In step S <b> 190, the control unit 70 controls the drive unit 4 based on the imaging signal from the anterior imaging optical system 60 and adjusts the position of the optometry unit 2. The control unit 70 detects the position of the eye to be inspected based on the imaging signal from the anterior eye photographing optical system 60. The control unit 70 controls the drive unit 4 based on the position detection result and adjusts the position of the optometry unit 2. In this case, the control unit may adjust the three-dimensional position of the optometry unit 2 by controlling the drive unit 4 so that the eye to be examined is arranged within the alignment allowable range.

<Setting of ROI of interest in auto gain control>
Next, an example in which the automatic gain control of the face photographing unit 90 is performed in the face image analysis in step S110 will be described. FIG. 6 is a diagram illustrating an example of auto gain control. The control unit 70 sets a region of interest ROI based on the position of the optometry unit arranged at the initial position in the captured image of the face imaging unit 90. In this case, the region of interest ROI is a region of interest set for performing auto gain control.

  For example, when the subject supported by the chin rest 11 is imaged at the initial position, an image region that is highly likely to be a face region is preset as the region of interest ROI. Here, the gain is automatically adjusted so that the luminance in the region of interest ROI becomes the target value.

  For example, the control unit performs auto gain control so that the brightness of the ROI becomes the target value Th1. More specifically, the control unit may perform auto gain control so that the accumulated luminance value of each pixel in the ROI approaches an arbitrary target value Th1, and when the accumulated luminance value is lower than the target value, If the gain is increased and the accumulated luminance value exceeds the target value, the gain may be decreased.

  Thereby, in the photographed image photographed by the face photographing unit 90 that easily collects disturbance light because of the wide angle, the contrast between the face and the eye of the subject is appropriately adjusted, and subsequent eye detection can be performed smoothly. it can.

  Note that, after the auto gain control at the initial position is performed, the auto gain control may be executed (for example, step 150, step 180, etc.) or may be terminated. Auto gain control may always be executed.

  Note that after the auto gain control at the initial position is performed, the control unit may move the region of interest ROI according to the position of the optometry unit 2. FIG. 7 is a diagram illustrating an example of switching to the ROI position according to the position of the optometry unit 2. In this embodiment, a plurality of different regions of interest ROI are set according to the left and right positions of the optometry unit 2. In this case, the movement amount of the optometry unit 2 in the left-right direction and the movement amount of the region of interest ROI in the captured image may have a paired relationship.

  The size of the region of interest ROI in the captured image may be appropriately set according to the purpose of image processing. The purpose of this embodiment is to perform good eye detection by appropriately adjusting the brightness of the face, and is set to a size at which a part of the subject's skin is at least formed (position avoiding the eyes). Is preferable). In this case, a boundary corresponding to the region of interest ROI may be set with respect to the up / down / left / right directions, or a boundary corresponding to the region of interest ROI may be set only with respect to the left / right direction.

  The correspondence relationship between the position of the optometry unit 2 and the set position of the region of interest ROI may be stored in the storage unit 74 in advance, and the control unit 70 uses the correspondence relationship stored in the storage unit 74 to perform optometry. The region of interest ROI may be set according to the position of the unit 2. The correspondence relationship between the position of the optometry unit 2 and the set position of the ROI may be obtained, for example, by simulation considering the optometry unit 2 and the position of the face photographing unit 90 in the optometry unit 2. In addition, even when the face of the subject is actually captured by the face photographing unit 90 with the chin rest 11 supported, the correspondence between the position of the optometry unit 2 and the set position of the region of interest ROI can be obtained. Good.

  In FIG. 7, four different types of ROIs are set according to the left and right positions, but the present invention is not limited to this, and two to three types of ROIs may be set, and five or more types of ROIs are set. May be. Of course, the region of interest ROI may be set linearly according to the position of the optometry unit 2.

  The control unit 70 changes the setting position of the region of interest ROI in the captured image based on the position information of the optometry unit 2 from the position detection sensor 75, and performs auto gain control based on the image signal in the changed region of interest ROI. May be performed. Thereby, regardless of the position of the optometry unit 2, the region of interest ROI is set at an appropriate position, and auto gain can be appropriately performed.

  In addition, the control unit 70 can perform gain adjustment according to the face formation position in the captured image by setting the region of interest ROI according to the position of the optometry unit 2 and performing auto gain control. Further advantageous. That is, the illumination state by face illumination differs depending on the position of the optometry unit 2, and the captured image may need to be adjusted. Therefore, by using the region of interest ROI set in accordance with the position of the optometry unit 2 as described above, auto-gain is performed again, so that it is possible to cope with changes in the illumination state, and the eye using the face photographing unit 90 Alignment by detection can be performed satisfactorily. Further, by changing the position of the region of interest ROI according to the position of the optometry unit 2, regardless of the position of the optometry unit 2, the brightness of the face is a constant level regardless of the brightness of external illumination or the like. Thus, the eye detection and the like can be performed reliably.

  In the above description, the position of the region of interest ROI is changed according to the position of the optometry unit 2 and the automatic gain control is performed. However, the present invention is not limited to this, and depending on the position of the optometry unit 2 The illumination state by face illumination may be changed.

  FIG. 8 is a diagram illustrating an example of changing the face illumination according to the position of the optometry unit 2. For example, when the optometry unit 2 is moved to the left eye side, the face illuminations 1 to 3 are turned on, the face illuminations 4 to 6 are turned off, and the optometry unit 2 is moved to the right eye side. Alternatively, the face lights 4 to 6 may be turned on and the face lights 1 to 3 may be turned off. Moreover, when the optometry part 2 is arrange | positioned in the center position, you may light the face illuminations 1-6. Further, the illumination light quantity of the light source may be adjusted without being limited to turning on / off the plurality of illumination light sources. Moreover, the arrangement configuration of the face illumination is not limited to the above, and various modifications are possible. Further, the light amount control in which the face illuminations 1 to 6 are made independent according to the position of the optometry unit 2 may be performed.

<Setting of ROI of interest in eye detection>
Next, an example of performing eye detection in the face image analysis in step S110, step 150, step 180, etc. will be described.

  The control unit 70 sets a region of interest ROI based on the position of the optometry unit as a captured image of the face imaging unit 90. In this case, the region of interest ROI is a region of interest set for performing eye detection, and is set as an image search range in eye detection.

  In this embodiment, eyes are detected from the face photographing unit 90. In eye detection, if the search range on the captured image can be limited, for example, the detection process can be speeded up, and erroneous detection (detecting different things as eyes) can be reduced. In this case, since the position of the eye changes depending on the position of the optometry unit 2, a region of interest (image search range) ROI is set based on the three-dimensional position information of the optometry unit 2, and an eye is searched for in the region of interest ROI. To do.

  When a face is photographed with the face placed on the chin rest 11, the range in which the eye can exist in the three-dimensional real space is limited to some extent. For example, there is an individual difference in the distance between the pupils and the size of the face, but it exists in a certain range. Therefore, the real space area where the eye can exist is determined as an area on the photographed image of the face photographing unit 90, and the area is searched for.

  Hereinafter, in consideration of the setting of the region of interest in the three-dimensional real space (the region where the eye is considered to exist), the method of converting the region of interest in the real space into the coordinates on the photographed image, and distortion of the lens of the face photographing unit 90 A method for correcting the result of coordinate transformation and a method for obtaining a region of interest on the image (a region where an eye is considered to exist) from the result of the coordinate transformation correction will be described.

Here, on the three-dimensional real space, when the subject places his face on the chin rest 11, a three-dimensional region in which the right eye is considered to exist is set (see FIG. 9). This solid is composed of points R1 to R8, and R1 = (X _R1 , Y _R1 , Z _R1 ),..., R8 = (X _R8 , Y _R8 , Z _R8 ). Similarly, a rectangular parallelepiped composed of points L1 to L8 where the left eye is considered to exist is set.

  For example, regarding the left-right direction, the position of the surface of R1-R5-R8-R4 is the position of the right eye assuming the eye to be examined (for example, PD = 90 mm) having the largest inter-pupil distance, for example, the center position of the device Is set at a position 45 mm away. Further, the position of the surface of R2-R6-R7-R3 is the position of the right eye assuming the subject eye (for example, PD = 30 mm) having the smallest inter-pupil distance, and is, for example, 15 mm away from the center position of the device Set to position. The center position may be, for example, the center position of the drive range in the left-right direction of the drive unit, or may be the position of the left-right symmetry axis of the apparatus main body (eg, base, face support unit, etc.).

  Further, with respect to the vertical direction, the position of the surface of R1-R2-R3-R4 is the upper limit of the movable range of the optometry unit 2, and is set, for example, at a position 32 mm above the position of the eye level marker. . The position of the surface of R5-R6-R7-R8 is the lower limit of the movable range of the optometry unit 2, and is set, for example, at a position 32 mm upward from the position of the eye level marker.

  Further, with respect to the Z direction, the position of the surface of R3-R7-R8-R4 is a predetermined amount (for example, on the apparatus side) relative to the average eye position when the subject is supported by the face support unit 9. 20 mm) is set at the shifted position. Further, the position of the surface of R2-R6-R5-R1 is a predetermined amount (for example, 20 mm) on the subject side with respect to the average eye position when the subject is supported by the face support unit 9. Set to the shifted position. Since the same method can be adopted for the left eye, the description is omitted.

Where the solid vertex of the region of interest in the real space set as described above is projected on the captured image is obtained (see FIG. 10). A method for obtaining the region of interest ROI of the right eye in the captured image will be described. First, R1 to R8 are projected onto r1 to r8 on the camera, respectively. R1 = (x _r1 , y _r1 ),..., R8 = (x _r8 , y _r8 ), respectively. These r1 to r8 are obtained.

When the pinhole camera model is applied, R1 = (X _R1 , Y _R1 , Z _R1 ) and r1 = (x _r1 , y _r1 ) from the relational expression in which the three-dimensional coordinates are projected onto the two-dimensional coordinates on the captured image. The relationship of Formula (1) is established between.

Is a camera parameter matrix of the face photographing unit 90. The camera parameters are internal parameters representing the focal position and optical center of the face photographing unit 90, and external parameters representing the orientation and position of the face photographing unit 90. The values c _{11 to} c ₃₄ are obtained from the values measured by the previous calibration (calibration) and the three-dimensional position information of the optometry unit 2 detected from the position detection sensor 75. Solving equation (1) yields equation (2).

Similarly, coordinates L1 to L8, which are projected on the camera, are obtained.

  In this embodiment, distortion occurs in the captured image of the face photographing unit 90 (see FIG. 11). In this embodiment, eye detection is performed on the original image (without distortion correction). Of course, distortion correction may be performed. When the influence of distortion is small, it is not always necessary to deal with distortion in image processing.

The obtained r1 to r8 are coordinates that do not take distortion into consideration. Therefore, the coordinates r'1 to r'8 taking the distortion into consideration are converted into the coordinates r1 to r8 having no distortion. An example in which r1 (x _r1 , y _r1 ) is converted to r′1 (x ′ _r1 , y ′ _r1 ) will be described. The relationship between r1 and r′1 is expressed by equation (3).

Where (x _c , y _c ) are the optical center coordinates on the image, k _{1 to} k ₃ are distortion coefficients, m is the radius from the optical center on the image,

It is.

  R′1 is obtained from equation (3). Similarly, r′2 to r′8 are obtained. Similarly, the coordinates l'1 to l'8 in consideration of the distortion are converted into the coordinates 11 to l8 without distortion.

  The region of interest ROI for the right eye on the captured image is within the smallest rectangular region including all r′1 to r′8 (see the rectangular ROI in FIG. 12). Similarly, the region of interest ROI of the left eye is within the smallest rectangular region including all l′ 1 to l′ 8.

  Using the above method, the control unit 70 sets a region of interest ROI based on the position of the optometry unit 2. The control unit 70 processes the image signal of the set region of interest ROI, searches for eyes included in the region of interest ROI, and performs eye detection.

<Transformation example>
<Simultaneous face photography and anterior eye photography>
Note that the control unit 70 may perform eye detection by the face photographing unit 90 even after eye detection by the anterior eye photographing optical system 60. For example, when the subject's face moves after eye detection by the anterior eye imaging optical system 60, the eye may not be detected in the captured image of the anterior eye imaging optical system 60, and the position of the eye may not be detected.

  The controller 70 may perform eye detection by the face photographing unit 90 in parallel even after eye detection by the anterior eye photographing optical system 60. The eye detection by the face photographing unit 90 may be performed at the same time as the eye detection based on the image from the anterior eye photographing optical system 60 or may be performed alternately.

  As a result, even after the eye is detected by the anterior eye photographing optical system 60, the face photographing unit 90 can detect the position of the eye over a wide range, and smooth alignment can be performed without having to return to the initial position again. it can. In this case, the control unit 70 may return to the eye detection by the face photographing unit 90 when the anterior eye photographing optical system 60 does not detect the eye.

DESCRIPTION OF SYMBOLS 1 Ophthalmology apparatus 2 Optometrist part 4 Drive part 5 Base 6 Case 70 Control part 71 CPU
72 ROM
73 RAM
90 Face shooting part

Claims (13)

An ophthalmic apparatus for inspecting an eye to be examined,
An optometry unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined;
An arithmetic processing unit that sets a region of interest based on the position of the optometry unit moved by the adjusting unit in the captured image and processes an image signal in the region of interest;
An ophthalmologic apparatus comprising:   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit sets the region of interest in order to detect at least a part of the face of the subject.   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit controls the ophthalmologic apparatus based on an image signal in the region of interest.   The ophthalmologic apparatus according to claim 3, wherein the arithmetic processing unit controls a photographing condition by the face photographing unit based on an image signal in the region of interest.   The ophthalmologic apparatus according to claim 3, wherein the arithmetic processing unit controls movement by the adjustment unit based on an image signal in the region of interest.   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit detects an eye to be examined by processing an image signal in the region of interest.   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit processes an image signal in the region of interest to obtain an evaluation value for controlling a photographing condition of the face photographing unit.   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit changes the position of the region of interest in the captured image in accordance with a change in the position of the optometry unit.   The ophthalmologic apparatus according to claim 1, wherein the arithmetic processing unit sets a region of interest corresponding to a predetermined position of the optometry unit in the captured image. An ophthalmologic apparatus control program executed in an ophthalmologic apparatus for inspecting an eye to be examined,
The ophthalmic device comprises:
An optometric unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined,
The ophthalmic apparatus control program is executed by a processor of the ophthalmic apparatus,
An arithmetic processing step for setting a region of interest based on the position of the optometry unit moved by the adjusting means in the captured image and processing an image signal in the region of interest,
An ophthalmologic apparatus control program that is executed by the ophthalmologic apparatus. An ophthalmic apparatus for inspecting an eye to be examined,
An optometry comprising: an optometry means for examining the eye to be examined; a face illumination optical system; and a face photographing means for photographing a photographed image including the face of the subject illuminated by the face illumination optical system. And
Adjusting means for moving the optometry part relative to the eye to be examined;
An ophthalmologic apparatus comprising: arithmetic processing means for controlling an illumination condition by the face illumination optical system based on a position of the optometry unit moved by the adjustment means. An ophthalmic apparatus for inspecting an eye to be examined,
An optometry unit comprising: an optometry means for examining the eye to be examined; and a face photographing means for photographing a photographed image including the face of the subject;
Adjusting means for moving the optometry part relative to the eye to be examined;
An arithmetic processing means for setting a region of interest for at least a part of the face of the subject in the captured image and processing an image signal in the region of interest;
An ophthalmologic apparatus comprising: The arithmetic processing means controls photographing conditions by the face photographing means based on an image signal in the region of interest, and processes a photographed image obtained after controlling the photographing conditions to detect an eye to be examined. The ophthalmic apparatus according to claim 12.