JP2009122379A - Optical device, control method thereof, imaging device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small and inexpensive optical system quickly switching a plurality of subject directions and subject images only by one optical device and available for both wide-angle and telescopic imaging. <P>SOLUTION: A movable reflecting member is disposed in an imaging optical system having a plurality of objective lens groups for capturing subject light. An optional objective lens group for guiding the subject light to a pickup device can be selected from the plurality of objective lens groups by moving the reflecting member. At least one objective lens is formed of an optical system capturing a substantially 360°-subject image around an optical axis. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention realizes an optical device and a control method thereof, an imaging device equipped with the optical device, and a control method applied when realizing a photographing optical system suitable for a digital camera or a video camera for monitoring. The invention relates to a computer readable program.

  2. Description of the Related Art Conventionally, for example, in a photographing apparatus such as a digital camera or a video camera for monitoring, in order to search for a target object (photographing target) and obtain a detailed image thereof, first, a wide area using a super wide angle lens or a fisheye lens Shoot the world. A method of obtaining a detailed image after discriminating a target subject from among them is generally used.

As a method for acquiring the subject image as described above, the following method can be considered.
(1) Method for obtaining an enlarged image of a target subject by electronic zoom (2) Method for obtaining an image of a target subject by configuring the optical system as a zoom lens and changing the magnification of the optical system (zoom lens) on the telephoto side (3 ) A method of switching a captured image of a target subject by using a plurality of photographing systems and one of which is a wide-angle photographing system and the other of which is a telephoto photographing system. Also, a subject guided to an imaging device by driving a reflecting member disposed in the optical system. Methods for switching light have been proposed (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3). In addition, a method has been proposed in which the entire circumference of a subject is observed using a reflection image at the periphery of a convex reflecting member, and another subject image is observed with another optical system with the central portion as a transmission structure. (For example, see Patent Document 4).
JP-A-9-297350 JP 2003-9104 A JP 2006-81089 A JP 2006-139234 A

  However, the above-described conventional image acquisition method has the following problems.

  In the above method (1), in order to obtain a magnified image of the target subject by extracting a part of the image, it is necessary to use an image sensor having high pixels in order to obtain a high-definition image. Performance requirements become stricter. As a result, the cost increases.

  In the method (2), when the target subject is a moving object and the photographer views the subject during zooming, it is necessary to perform zooming again in the wide-angle direction. Therefore, quick subject observation cannot be performed. In addition, it is difficult to realize an optical system that covers a wide angle and a telephoto range.

  In the method (3), since a plurality of photographing systems are used, a plurality of camera units must be used. This increases the size of the apparatus used for photographing and increases the cost. In the method (3), in order to obtain a characteristic as if a plurality of photographing optical systems were photographed by switching a part of the photographing optical system using one image sensor, A mechanism for inserting / withdrawing a part of the photographing optical system is generally used. Conventionally, a mechanism for replacing a part of the photographing optical system is often used in a two-focal type silver salt compact camera. However, there is a problem that a mechanism for replacing a part of the photographing optical system has a large structure.

  In addition, the techniques described in Patent Documents 1 to 3 have a configuration in which it is difficult to obtain a large change in the shooting angle of view, and the direction of the target subject to be shot changes greatly. Therefore, it becomes difficult to detect the target subject and acquire detailed information in a short time.

  Further, the technique described in the above-mentioned Patent Document 4 has a reflection optical system and a wide-angle refracting light system coaxially arranged in an objective optical system, and a subject image in the optical axis direction that cannot be obtained by the reflecting optical system is refracted. It is intended to be obtained with a wide-angle optical system. With such a configuration, it is impossible to quickly detect a subject and obtain a detailed image of the subject. In addition, there is a problem that it is difficult and costly to produce a large reflective member with good surface accuracy.

  In view of the above-described conventional problems, an object of the present invention is to provide the following optical device, control method thereof, imaging device, and program. That is, it is possible to realize a compact and low-cost optical system that can quickly switch and shoot a plurality of subject directions and subject images with only one optical device, and that covers the telephoto from a wide angle.

  In order to achieve the above object, an optical apparatus of the present invention includes a plurality of objective optical systems for capturing subject light and a common optical system through which light beams that have passed through each objective optical system pass in common. An optical apparatus for forming an object image generated by an optical system and the common optical system, wherein selection is performed for selectively guiding any of the object light captured by the plurality of objective optical systems to the common optical system. An optical member, and at least one of the plurality of objective optical systems forms a wide-angle objective optical system that captures an omnidirectional subject image around the optical axis or a wider-angle subject image than the other objective optical system. It is characterized by comprising an objective optical system for imaging.

  The image pickup apparatus of the present invention is an image pickup apparatus on which the above-described optical device is mounted, and an image pickup unit that photoelectrically converts a subject image formed by the optical device into an electric signal; and the optical device in the pan direction. A pan driving mechanism for driving or a tilt driving mechanism for driving the optical device in a tilt direction is provided.

  Further, the control method of the optical device according to the present invention includes a plurality of objective optical systems for capturing subject light, a common optical system through which rays that have passed through each objective optical system pass in common, and the plurality of objective optical systems. A selection optical member for selectively guiding any of the captured subject light to the common optical system, wherein at least one of the plurality of objective optical systems is an omnidirectional subject image around the optical axis, or Consists of an objective optical system that captures a wider-angle subject image than the other objective optical system, and forms a subject image generated by any one of the plurality of objective optical systems and the common optical system And an optical device control method capable of driving in either the pan direction or the tilt direction, which captures an omnidirectional subject image around the optical axis or a wider-angle subject image than the other objective optical system. Objective optical system A detection step of recognizing a target object from an image range and detecting a relative positional relationship between a shooting direction of an objective optical system different from the objective optical system and a direction of the target object; and the detected relative position And calculating the required drive angle in either the pan direction or the tilt direction based on the above, and if the calculated required drive angle is equal to or greater than a specified value, the other objective optical system is set in either the pan direction or the tilt direction. And a driving step for driving in that direction.

  A program according to the present invention is a program for causing a computer to execute the method for controlling the optical device.

  According to the present invention, it is possible to quickly switch and photograph a plurality of subject directions and subject images with only one optical device. This makes it possible to realize an optical system that covers a wide angle and a telephoto at a small size and at a low cost, and allows a quick subject observation even during moving body shooting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In the first embodiment, an optical device having a configuration in which a refractive optical system is used as an objective optical system for obtaining a wide angle of view will be described.

<Schematic configuration of optical device>
FIG. 1 is a cross-sectional view showing a schematic configuration of an optical device according to a first embodiment of the present invention.

  As shown in FIG. 1, this optical apparatus has an image sensor IP that photoelectrically converts a subject image into an electric signal, and is shared in the optical axis direction via a filter group 10 such as an infrared absorption filter or a low-pass filter. An optical system 11 and a common reflecting member (selective optical member) 12 are arranged. Furthermore, a first objective optical system 15 configured with a refractive optical system for obtaining a wide angle of view and a second objective optical system 13 for obtaining a narrow angle of view are disposed via the common reflecting member 12. Has been.

  Specifically, the first objective optical system 15 is an optical system for capturing a wide-angle subject image, and the second objective optical system 13 is for capturing a subject image farther than the first objective optical system 15. It is an optical system. The common reflecting member 12 is disposed on the imaging plane side (the imaging plane side of the subject image) of the first objective optical system 15 and the second objective optical system 13. The common reflecting member 12 reflects one of the incident lights from the two objective optical systems 15 and 13 to deflect the optical path, and shields the other incident light. It is a reflecting member having an action. That is, the common reflecting member 12 has an action of selectively deflecting or shielding incident light from the plurality of objective optical systems 15 and 13 (described in detail later).

  Note that it is desirable that the angle of view W1 of the wide-angle subject image obtained by the first objective optical system 15 includes a range of 90 ° or more, and further, the first objective optical system 15 has strong negative distortion characteristics. It is preferable to provide a super wide angle of view characteristic as a fisheye or an optical type equivalent to it.

  A common optical system 11 having an effect of imaging incident light from the common reflecting member 12 is disposed on the image forming surface side of the common reflecting member 12, and an image sensor IP is disposed on the image forming surface. ing.

  As described above, the optical device acts to form a subject image generated by the objective optical system and the common optical system.

<Configuration example of common reflecting member>
Next, as described above, refer to FIGS. 2 to 5 for a configuration example of the common reflection member 12 having an action of selectively deflecting or shielding the incident light from the plurality of objective optical systems 15 and 13. To explain.

(A) Example Using a Reflecting Mirror with a Rotation Driving Mechanism FIG. 2 is a schematic cross-sectional view showing an example using a reflecting mirror with a rotation driving mechanism as the common reflecting member 12.

  In this example, a reflecting mirror 12-1 having a rotation drive mechanism is used as the common reflecting member 12. As for the incident light from the first objective optical system 15 and the second objective optical system 13 to the reflecting mirror 12-1, one is from the upward direction (incident direction 1) in FIG. 2, and the other is the left direction (incident direction 2). ) Is assumed to be incident.

  In a state where the reflecting mirror 12-1 is at the position K1 in FIG. 2, incident light from the incident direction 2 is deflected by the reflecting surface 12-1a and emitted downward in FIG. The incident light from is shielded by the light shielding surface 12-1a of the reflecting mirror 12-1.

  On the other hand, if the reflecting mirror 12-1 is rotationally driven around the fulcrum P in FIG. 2 to the position K2 (broken line), the incident light from the incident direction 2 is blocked and the incident light from the incident direction 1 is It will be injected downward.

  When the reflecting mirror 12-1 interferes with other optical members due to the rotation of the reflecting mirror 12-1, the fulcrum P of the reflecting mirror 12-1 is moved in the vertical direction (see H in FIG. 2). You may drive so that it may.

(B) Example Using Prism FIGS. 3, 4, and 5 are cross-sectional schematic diagrams illustrating examples in which a prism formed by joining two right-angled triangular prisms is used as the common reflecting member 12.

  In this example, a prism 12-2 in which two right triangular prisms are joined is used as the common reflecting member 12. A semi-transmissive characteristic film 12-2a is formed on the joint surface of the two right triangle prisms.

  In the example shown in FIG. 3, a light shielding plate 12-3 capable of arbitrarily shielding and retracting is disposed in front of two incident surfaces (incident direction 1 and incident direction 2) of the prism 12-2. When one incident surface is shielded from light, the other incident surface retracts the light shielding plate 12-3 to allow light to pass therethrough.

  In the example shown in FIG. 4, the density variable member 10-4 is arranged in front of the two incident surfaces of the prism 12-2 instead of the movable light shielding plate 12-3 described in the explanation of FIG. . The density variable member 10-4 is a member that selectively operates the light shielding and transmission functions, for example, by having the function of arbitrarily varying the density of liquid crystal or the like.

  In the example shown in FIGS. 5A, 5B, and 5C, the linearly polarizing plate 12-5 is disposed in front of the two incident surfaces of the prism 12-2. FIG. 4A is a side view thereof, FIG. 4B is a top view when transmitting, and FIG. 4C is a top view when shielding light.

  In the example shown in FIG. 5, when the linearly polarizing plate 12-5 is viewed from the emission direction side, the linearly polarizing direction of the linearly polarizing plate 12-5 arranged in the incident direction 1 and the straight line arranged in the incident direction 2. The polarization directions of the polarizing plates 12-5 are set so that the linear polarization directions of the polarizing plates 12-5 are orthogonal to each other. Here, the light beam in the incident direction 1 is a light beam that passes through the prism 12-2, and the light beam in the incident direction 2 is a light beam that is deflected by reflection at the joint surface of the prism 12-2.

  A movable linearly polarizing plate 12-6 is arranged in front of the prism surface in the emission direction so that the linearly polarized light direction can be changed. By the operation of this linearly polarizing plate 12-6, it is selected whether the polarization direction is the same or orthogonal to that of the linearly polarizing plate 12-5 disposed in front of the two incident surfaces. As a result, it is possible to switch between light-shielding and transmission functions.

  As shown in FIGS. 5B and 5C, the movable linearly polarizing plate 12-6 has a shape obtained by cutting out only the light passage effective portion from the disk shape, and is driven to rotate about the center point 12-6a of the disk as a rotation center. Let This makes it possible to select light shielding and transmission from the incident directions 1 and 2.

  Note that the driving method of the linearly polarizing plate 12-6 is not limited to this, as long as the linearly polarizing direction can be changed. Alternatively, polarizing plates having different polarization directions may be switched.

  In the configurations shown in FIGS. 3, 4 and 5, the reflecting member that can be used as the common reflecting member 12 is not limited to a prism, and a semi-transmissive reflecting mirror having a thin plate thickness may be used. Is possible.

<Concrete examples of optical devices>
FIGS. 6A and 6B are optical path diagrams showing a first concrete example of the optical device shown in FIG.

  In this optical apparatus, a strong negative refraction action is given to the first objective optical system 15-1 to cause a large negative image surface distortion action. On the other hand, the second objective optical system 13-1 corrects distortion by arranging a combination of a positive lens group and a negative lens group, and is configured to have a longer focal point than the first objective optical system 15-1. ing. Both the first objective optical system 15-1 and the second objective optical system 13-1 are set so as to pass through the common optical system 11-1 and form images at substantially the same position on the optical axis.

  Further, the field range obtained by the second objective optical system 13-1 of the telephoto system is configured to efficiently capture a part of the field range obtained by the second objective optical system 15-1 having a wide angle. . That is, the arrangement angle of the common reflecting member 12-1 and the optical axis directions of the first objective optical system 15-1 and the second objective optical system 13-1 are set so that the deflection angle of the optical axis becomes an obtuse angle. Yes.

  Further, as shown in FIG. 6B, different object directions can be observed by rotationally driving the second objective optical system 13-1 and the common reflecting member 12-1. Next, the details will be described with reference to FIG.

  FIG. 7 is a schematic cross-sectional view showing a rotation driving mechanism of the second objective optical system and the common reflecting member.

  As shown in FIG. 7, it is assumed that a subject to be observed moves downward from the optical axis direction (left direction in FIG. 7) of the second objective optical system 13. In this case, the second objective optical system 13 moves by an angle α about the rotation center point 12a. Here, the rotation center 12 a is a position where the common reflection member 12 and the optical axis intersect, and the angle α is a change in the angle of the second objective optical system 13 in the subject direction.

  In order for the common reflecting member 12 to keep the deflection direction in a state before the movement of the second objective optical system 13 corresponding to the change in the optical axis incident angle of the second objective optical system 13, Thus, a change corresponding to the rotation angle (α / 2) about the rotation center point 12a may be given.

  As described above, by providing a mechanism for rotationally driving the second objective optical system 13-1 and the common reflection member 12-1, for example, a subject position change in the vertical direction (tilt direction) as shown in the example of FIG. 9 occurs. However, it is possible to realize an optical device capable of quickly following the operation.

  Further, when the subject position changes in the horizontal direction (panning direction), at least the reflecting member 12 and the second objective optical system 13 may be rotated around the optical axis of the common optical system 11, but the entire optical system is rotated. May be performed.

In addition, when the same subject is photographed with a plurality of objective optical systems and observed simultaneously, the deviation of the best image formation position on the optical axis of the formed multiple images is different when the image input medium is an image sensor. The following relationship should be satisfied.

ΔIP ≧ 10 · L / 2 · N
L: Pixel pitch of the image sensor N: NA value of the optical system having a larger NA value ΔIP: Allowable difference width

This condition is a condition for clearly capturing a plurality of formed images simultaneously in the image sensor. If this conditional expression is not satisfied, it is necessary to adjust the focus every time each formed image is captured. For this reason, in order to capture a plurality of formed images together sharply, it is necessary to divide and capture each formed image area, which may require processing time.

  Further, in a state where the objective optical systems 15 and 13 photograph subjects having different object distances, there is a method of disposing a focus lens group that moves in the optical axis direction in the common optical system 11. In other words, this is a method of driving the focus lens group so that a target formed image is the best among a plurality of optical systems. Further, in order to simultaneously optimize the formed images of a plurality of optical systems, a focus lens group may be disposed in each of the objective optical systems 15 and 13 and driven.

  In addition, in order to automatically adjust the focus, an autofocus method using the contrast evaluation of the formed image formed on the image sensor and an active external autofocus mechanism that matches the shooting axis of each objective optical system May be used independently for each optical system.

  FIG. 8 is a configuration diagram of the wide-angle optical system according to the first concrete example to which the numerical value shown in numerical example 1 described later is applied, and FIG. 9 shows the numerical value shown in numerical example 2 described later. FIG. 2 is a configuration diagram of a telephoto optical system according to the first concrete example.

  8 and 9, the common reflecting member 12-1 is disposed in the air interval on the light incident side of the common optical system 11-1. As shown in FIG. 8, the first objective optical system 15-1 is composed of two negative lenses having a strong concave surface directed toward the image plane, thereby giving a strong negative distortion and an angle of view. Has a fisheye optical action of 90 ° or more. On the other hand, as shown in FIG. 9, the second objective optical system 13-1 is composed of a positive lens and a negative lens from the light incident side, and corrects distortion to give a weak negative refractive power as a whole. Optical characteristics that are telephoto with respect to the optical system 8 are obtained.

  FIGS. 10A, 10B, and 10C are optical path diagrams showing a second concrete example of the optical device shown in FIG.

  This optical apparatus uses a five-group configuration as the variable magnification optical system when the zoom lens is configured, and the numerical values shown in Numerical Example 6 to be described later are applied as the first objective optical system 15-2 having a wide angle system. A fisheye optical system is used. The telephoto second objective optical system 13-2 uses an optical system to which the numerical values shown in Numerical Example 7 to be described later are applied. In the configuration of this optical apparatus, a thin mirror is used instead of the prism for the common reflecting member 12-1. When the common reflecting member 12-1 selects the subject light from the first objective optical system 15-2, the variable magnification optical system is set to a prescribed variable magnification state.

  FIG. 11 is a configuration diagram of a wide-angle optical system according to the second concrete example (FIG. 10) to which the numerical value shown in numerical example 6 described later is applied, and FIG. 12 is shown in numerical example 7 described later. It is a block diagram of the telephoto optical system which concerns on the said 2nd concrete example (FIG. 10) to which a numerical value is applied.

  The wide-angle optical system (an optical system including the first objective optical system 15-2) arranged in this example is a specification used at the wide-angle end of the zoom optical system, and when zooming is performed on the telephoto side, The formed image is gradually shielded by the light shielding member 16 disposed in the first objective optical system 15-2.

  13A to 13D are optical path diagrams showing a third concrete example of the optical device shown in FIG. 14 is a configuration diagram of the wide-angle optical system according to FIG. 13 to which the numerical value shown in Numerical Example 8 is applied, and FIG. 15 is the telephoto optical system in FIG. 13 to which the numerical value shown in Numerical Example 9 is applied. It is a block diagram of a system.

  As shown in FIG. 15, the telephoto optical system (optical system including the second objective optical system 13-2) arranged in this example has a negative first lens unit B1 and a positive first lens unit as a whole from the light incident side. It has two lens groups B2. The first lens unit B1 is fixed on the optical axis, and the optical axis is moved so that the air space between the second lens unit B2 and the first lens unit B1 is narrowed at the time of zooming from the wide angle to the telephoto side. Then, the image pickup medium is moved along the optical axis so as to correct the accompanying image plane movement.

  In this example, the photographing switching method between the wide-angle optical system and the telephoto variable magnification optical system is performed by selectively inserting and retracting the reflecting mirror 12-1 as shown in FIGS. ing. The image obtained by the wide-angle optical system is based on the premise that the reflecting mirror 12-1 is retracted with the telephoto optical system positioned near the wide-angle end.

[Second Embodiment]
In the second embodiment, an omnidirectional reflecting member having a convex shape on the imaging surface side (or a conical reflecting member with the apex facing the imaging surface side) may be disposed as the first objective optical system. An optical device that obtains a wide angle of view by forming the reflected image will be described.

<Schematic configuration of optical device>
FIG. 16 is a cross-sectional view showing a schematic configuration of an optical apparatus according to the second embodiment of the present invention. Elements common to those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 16, this optical apparatus has a configuration from the image sensor IP to the second objective optical system 13 via the common optical system 11 and the common reflecting member 12 in the first embodiment shown in FIG. 1. It is the same as the form. That is, the difference from FIG. 1 is that as the first objective optical system 15A, an omnidirectional reflecting member 15A-1, a light shielding member 16, and a lens group 15A-2 having a convex shape are arranged in order from the light incident side. A wide angle of view is obtained by forming the reflected image.

  The omnidirectional reflecting member 15A-1 is configured by a convex reflecting member having a convex surface in the traveling direction of incident light or a conical reflecting member having a vertex directed in the traveling direction of incident light.

  Here, the light shielding member 16 in FIG. 16 need not be arranged, but prevents unnecessary reflection by the first objective optical system 15A. That is, the reflected light from around the apex of the convex surface of the reflecting member 15A-1 is shielded, and a light shielding area is provided for the image originally formed in the central area of the screen.

  The common reflecting member 12 in the present embodiment also has the same function as that in the first embodiment. That is, it has an effect of selectively deflecting or shielding incident light from the plurality of objective optical systems 15 and 13.

<Concrete examples of optical devices>
FIG. 17 is an optical path diagram showing a first concrete example of the optical device shown in FIG. 16, and FIG. 18 is a first concrete example (FIG. 16) to which the numerical values shown in Numerical Example 3 described later are applied. It is a block diagram of the wide angle optical system which concerns on. The telephoto optical system arranged in this example is the same as the telephoto optical system to which the numerical value shown in Numerical Example 2 is applied.

  In the optical apparatus of this example, a hyperboloid-shaped reflecting member 15A-1a having a convex surface in the imaging plane direction is disposed on the most light incident side of the first objective optical system 15A, and a reflected image is formed on the imaging plane side. In this configuration, a negative lens group 15A-2a for correcting and guiding the light to the common optical system 11-3 is arranged.

  By adopting such a reflection optical system configuration, when a subject around 360 ° with respect to the optical axis is set as an image range in the horizontal direction, the subject image in the vertical direction can capture a subject image extending across the angular direction orthogonal to the optical axis. . Therefore, it becomes easy to photograph the subject field area that is difficult to design in the fish-eye optical system described above.

  19A, 19B, and 19C are optical path diagrams showing a second concrete example of the optical device shown in FIG.

  In this optical apparatus, the wide-angle optical system is a reflection optical system having the reflection member 15A-1a, and the common optical system 11-3 has a variable magnification configuration. Further, by forming a telephoto optical system (an optical system including the second objective optical system 13-2) as a zooming optical system that zooms further to the telephoto side, further detailed images can be formed.

  Then, a beam split prism 12-2 is used as the common reflecting member 12, and the arrangement is performed so as to guide light rays from two directions in one direction. As the prism used for this purpose, it is preferable to use a prism capable of arbitrarily selecting the transmission direction and the reflection direction characteristics as described with reference to FIGS.

  20 is a configuration diagram of the wide-angle optical system in FIG. 19 to which the numerical value shown in Numerical Example 4 is applied, and FIG. 21 is a second concrete example to which the numerical value shown in Numerical Example 5 is applied (FIG. 19). 2 is a configuration diagram of a telephoto optical system according to FIG.

  In the variable power optical system of this example, the first lens unit B1, the negative second lens unit B2, the positive third lens unit B3, the positive fourth lens unit B4, and the negative lens unit having positive refractive power from the light incident side. The fifth lens unit B5. When zooming from wide angle to telephoto, the second lens group B2 is moved toward the image plane, and the optical axis is moved so that the image plane position is corrected by the fourth lens group B4. Is going. Further, focusing is preferably performed by moving the fourth lens B4 along the optical axis. Further, when the image stabilization function is required, the image plane displacement is corrected so as to correct the image blur by moving the entire third lens unit B3 or a part of the third lens unit B3 in the direction perpendicular to the optical axis. Good to give.

  Here, the wide-angle optical system (an optical system including the first objective optical system 15A) has a specification used at the wide-angle end of the zoom optical system. When zooming is performed on the telephoto side, the first objective optical system is used. The formed image is gradually shielded by the light shielding member 16 arranged at 15A.

[Third Embodiment]
In the third embodiment, an optical apparatus in which an optical system that combines a second objective optical system and a common optical system has the function of a secondary imaging optical system will be described.

<Schematic configuration of optical device>
FIG. 22 is a cross-sectional view showing a schematic configuration of an optical device according to the third embodiment of the present invention. Elements common to those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

  The telephoto optical system according to the present embodiment has a second objective optical system 13A having a positive refractive action as a whole on the light incident side, and a first refractive power having a positive refractive power disposed in the vicinity of the primary imaging position R1. 2 objective optical system 13B. Then, the common reflecting member 12 is disposed at a position through which the subject lights of the first objective optical system 15B and the second objective optical systems 13A and 13B are passed. The common reflecting member 12 selectively selects the subject light from the first objective optical system 15 for obtaining a wide angle of view and the subject light of the second objective optical systems 13A and 13B that are more telephoto than that. It has the effect of deflecting one and shielding the other.

<Concrete examples of optical devices>
23 is an optical path diagram showing a first concrete example of the optical device shown in FIG. 22, and FIG. 24 is a first concrete example (FIG. 23) to which the numerical values shown in Numerical Example 10 described later are applied. 1 is a configuration diagram of a telephoto optical system according to FIG.

  In the telephoto optical system (optical system including the second objective optical systems 13A-1 and 13B-1) in this example, a configuration in which a secondary imaging type optical system to which the numerical value shown in Numerical Example 10 is applied is arranged. It is said. Further, the fish-eye optical system shown in Numerical Example 1 described above is used as the wide-angle optical system. The wide-angle first objective optical system 15-1 uses the reflection characteristics of the common reflecting member 12-1, and the telescopic second objective optical systems 13A-1 and 13B-1 use the common reflecting member 12-1. Each of the subject lights is guided to the common optical system 11-3 by using the transmission characteristics of.

  In the example of FIG. 23, a reflecting member 17A is disposed between the primary imaging optical system (second objective optical system) 13A-1 in the secondary imaging optical system and the field lens group 13B-1, and the telephoto side. The object light of the second objective optical system 13A-1 is deflected.

  Further, in order to reduce the size of the optical device, in this first concrete example, a thick positive lens 11-3a disposed on the image plane side of the common reflecting member 12-1 is deflected by 90 °. By adopting a prism shape with the, the optical system is folded.

  Further, when the reflecting member 17A and the second objective optical system 13A-1 (primary imaging optical system) are rotationally driven (tilt driving) and the entire optical device is rotationally driven (pan driving), various operations are performed. A subject in any direction can be captured with a telephoto optical system.

  At this time, the tilt drive described above uses the point of intersection of the reflecting member 17A and the optical axis as the rotation center (17A-1 in FIG. 23), and the imaging axis of the second objective optical system 13A-1 as the target subject direction. Rotation drive is performed so that The resulting displacement of the imaging position is corrected by rotating the reflecting member 17A with reference to the rotation center position equivalent to the rotation center 17A-1.

In this case, the driving angle of each of the reflecting member 17A and the second objective optical system 13A-1 is 2 with respect to the displacement of the driving angle of the reflecting member 17A when the reflecting surface of the reflecting member 17A is a plane. It becomes a double relationship. From this, when the rotation angle of the second objective optical system 13A-1 is A and the rotation angle of the reflecting member 17A is B,
A = 2 ・ B
It is desirable to satisfy this relationship, and by satisfying this relationship, it is possible to prevent the displacement of the image formation position and the change in image formation performance due to the position change of the second objective optical system.

  The rotational drive relationship between the reflecting member 17A and the second objective optical system 13A-1 (primary imaging optical system) is the same in the common reflecting member 12-1 and the objective optical system in which incident light is deflected thereby. The same effect can be obtained.

  25 is an optical path diagram showing a second concrete example of the optical device shown in FIG.

  This optical device uses the same optical member as that of the optical device of FIG. 23. Instead of eliminating the above-described reflecting member 17A and eliminating the tilt drive, a part of the photographing field of the wide-angle optical system is telephoto optical. The arrangement angle of the common reflecting member 12 is deflected so that it can be observed with the system. Accordingly, the second objective optical systems 13A-1 and 13B-1 on the telephoto side and the common optical system 11-3 are given an inclination relative to the first objective optical system 15-1 on the wide angle side. is there.

[Fourth Embodiment]
In the fourth embodiment, as in the third embodiment described above, the optical system in which the second objective optical system and the common optical system are combined has the function of a secondary imaging optical system. It is an example.

<Schematic configuration of optical device>
FIG. 26 is a cross-sectional view showing a schematic configuration of an optical apparatus according to the fourth embodiment of the present invention. Elements common to those in FIG.

  This optical device has the same function as that of the third embodiment described above, and an omnidirectional reflecting member 15A-1 having a convex shape on the image forming surface side is arranged in the first objective optical system 15A. In other words, a wide angle of view is obtained by forming the reflected image.

  A light shielding member 16 is disposed between the reflecting member 15A-1 and the lens 15A-2 in the first objective optical system 15A. Here, the light shielding member 16 is to prevent unnecessary reflection of the optical system by the first objective optical system 15A, as described with reference to FIG.

<Concrete examples of optical devices>
FIG. 27 is an optical path diagram showing a concrete example of the optical device shown in FIG.

  The telephoto optical system (the optical system including the second objective optical systems 13A-1 and 13B-1) uses the same optical elements as in FIG. 25 described above, and the first objective optical system 15A has a convex surface on the light incident side. Using a hyperboloidal reflecting member 15A-1a in the direction of the image plane. That is, the same optical element as in Numerical Example 3 is used in the wide-angle optical system.

[Modification of optical device]
(1) The pan driving of the optical device shown in FIGS. 23, 25, and 27 described above may be performed by rotating the entire device around the optical axis of the first wide-angle objective optical system. The objective optical system may be fixed and other optical systems may be rotated.

  (2) The configuration of the optical device in each of the above embodiments is not limited to the above-described example. For example, the first objective optical system and the second objective optical system so that the relationship between reflection and light shielding described above is reversed. The arrangement may be configured as follows.

  (3) The image forming medium is not limited to the image pickup device. If necessary, a silver salt film or a focusing plate is arranged to observe the projected image, or the formed image is an aerial image and the image is used as a field scope. You may make it observe.

  Each optical path diagram in each embodiment shows how incident light from the first objective optical system and the second objective optical system passes through the common optical system 11 to form an image.

[Fifth Embodiment]
Next, application examples of the optical device according to the first to fourth embodiments will be described with reference to FIGS. 28 to 32.

  FIG. 28 is a conceptual diagram showing an installation example of an imaging device equipped with the optical device according to any of the first to fourth embodiments.

  In FIG. 28, an imaging device 41 equipped with the above-described optical device 40 is installed on the ceiling surface 42 so that the imaging element IP in the imaging device faces downward, thereby observing a subject (person) 43 in a diagonally downward direction. It is configured to be able to.

  In addition, reference numerals 44 and 45 in FIG. 28 are used to arbitrarily select subject light rays incident from the two objective optical systems by the common reflecting member 12 that changes the light shielding, transmission, and deflection characteristics as described above. The image is formed.

  The image denoted by reference numeral 44 is an image captured by the combined optical system of the wide-angle first objective optical system 15 and the common optical system 11 in the optical device 40, and the image denoted by reference numeral 45 is the telescopic second objective. It is an image captured by the combining optical system of the optical system 13 and the common optical system 11. W1 and W2 in the figure indicate the field angle range, which will be described later with reference to FIG. In addition, ω shown schematically represents an object direction angle, which will be described later with reference to FIGS. 30 and 32.

  29 is a cross-sectional view showing a schematic configuration of the mechanism of the imaging apparatus in FIG.

  In FIG. 29, an imaging device 41 includes an optical device 40 and an imaging element inside a casing, and also includes a pan driving mechanism 41a, a tilt driving mechanism 41b, and a protective dome 41c. The pan driving mechanism 41a is driven in the arrow Ya direction (panning direction) in the drawing, and the tilt driving mechanism 41b is driven in the arrow Yb direction (tilting direction) in the drawing.

  The range indicated by reference sign W1 is a field angle range by a composite optical system in which the first objective optical system 15 of the optical device 40 and the common optical system 11 are combined, and the range indicated by reference sign W2 is the second objective optical of the optical device. This is an angle of view range by a composite optical system in which the system 13 and the common optical system 11 are combined.

  In the imaging device 41, the reflection member (not shown) in the second objective optical system 13 in the optical device 40 or the common reflection member 12 through which the first objective optical system 15 and the second objective optical system 13 are interposed is rotationally driven. Then, these reflecting members are set to an arbitrary deflection angle. That is, tilt drive is performed. Thereby, the photographing axis is adjusted by the second objective optical system 13 in accordance with the distance of the subject. Further, the optical axis is rotated and driven so as to include at least the optical system arranged on the light incident side in the second objective optical system 13. That is, panning drive is performed. Thereby, the photographing direction of the second objective optical system 13 is changed in accordance with the direction of the subject.

  In the configuration shown in FIG. 29, the entire optical system including the image sensor is configured to be rotatable around the optical axis, but is not limited thereto. What is necessary is just to rotate about the optical axis after the light deflection | deviation by the common reflection member 12 which deflects the incident light from the 2nd objective optical system 13 as a rotation center at least.

  Further, as shown in FIG. 28, in order to capture an upper body image of a walking subject (person) 43 with the imaging device 41, first, the subject direction is identified from the image captured by the first objective optical system 15, and panning is performed. The imaging axis in the horizontal direction of the second objective optical system 13 is adjusted by driving. Thereafter, tilt driving is performed in accordance with the distance of the subject 43, and as described above, the transmission and shading action of the common reflecting member 12 is changed, and the upper half of the subject 43 is photographed by the second objective optical system 13. Thereafter, when the subject is lost sight, the moving object (subject 43 during walking) can be accurately tracked by repeating this operation.

  The operation as described above is not limited to the purpose of subject tracking, but can be used for applications such as capturing a detailed image of a still image by quickly detecting a target subject in a wide range of observations.

  Here, an example of a method for performing direction detection and correction movement of the subject 43 will be described.

  First, position detection in the tilt direction and pan direction of the imaging axis of the optical system currently set in the optical device is performed. Next, the panning rotation angle at which the target object captured by the first objective optical system 15 and discriminated by a shape recognition unit (not shown) or the like performs correction movement in the concentric direction in the image circle (image range) is set. calculate. At the same time, the tilt correction driving amount is calculated from the distance from the center of the image circle to the target subject in the radial direction. Then, the pan driving mechanism and the tilt driving mechanism are driven according to the calculation result.

  FIG. 30 is a conceptual diagram showing an initial image state during subject recognition by the imaging apparatus according to the present embodiment.

  In FIG. 30, the control unit (see FIG. 31) of the optical device recognizes (detects) the target subject 61, and the pan direction and the tilt direction necessary for capturing the detailed image of the target subject 61 with the second objective optical system 13. Is calculated. The electrical configuration including the control unit of the imaging apparatus equipped with the optical device according to the present embodiment will be described later with reference to FIG.

Now, it is assumed that the pan (horizontal) direction of the second objective optical system 13 in the optical apparatus is directed to the illustrated (P) direction. First, on the basis of the (P) direction, the angle θ of the target subject 61 in the concentric direction is determined based on the image of the outer peripheral side area of the image circle imaged by the first objective optical system 15 therefrom. Next, the relationship between the angle ω of the light beam incident on the first objective optical system 15 and the image height Y at which the light beam forms an image on the imaging surface of the image sensor IP, for example,
ω = A · Y + B · Y ² + C · Y ³ + ...
However, A, B, C,... Incorporate a polynomial expression such as a coefficient that is specific to the optical system used in the drive algorithm.

  Next, the distance (screen image height) Y from the center of the image circle (center of the screen) to the center of the target subject is calculated, and the subject direction angle ω is calculated from the distance Y using the above-described polynomial expression. Thereby, the necessary tilt driving angle of the tilt movement group (optical configuration on the subject side including the reflecting member) in the second objective optical system 13 can be obtained.

  At this time, it is not always necessary to perform both of the panning and tilt driving described above. For example, in the case of monitoring a person who moves only in the hallway depth and the front direction, only the tilt driving may be performed. Further, in photographing a person or the like who moves around the optical apparatus without changing much distance, the second objective optical system 13 for capturing a detailed image is fixed at a necessary tilt angle and only panning driving is performed. It will be good.

  This completes the description of target object discrimination and high-speed detailed image capture by tracking of a moving object or high-field observation in an application example of the optical device according to the present embodiment. Note that by setting the tilt angle of the second objective optical system 13 to be outside the range of the angle of view of the first objective optical system 15, it is possible to simultaneously observe subjects in different directions.

  Next, an electrical configuration example and a control example of the imaging apparatus according to the present embodiment will be described with reference to FIGS. 31 and 32. FIG.

  FIG. 31 is a block diagram illustrating an electrical configuration example of the imaging apparatus according to the present embodiment.

  In FIG. 31, the imaging apparatus includes an optical device 101 configured by any of the optical devices according to the first to fourth embodiments described above. Furthermore, the image sensor IP, the signal processing unit 103, the storage unit 104, the operation unit 105, the control unit 106, the storage unit 107, the display unit 108, the pan driving mechanism 109, the tilt driving mechanism 110, and the transmission / shading switching mechanism 111 are provided. ing.

  The image sensor IP photoelectrically converts the subject image formed by the optical device 101 into an electric signal. The signal processing unit 103 performs signal processing on the electrical signal output from the image sensor IP and stores the signal in the storage unit 104 as image data. The storage unit 104 includes a work area and a temporary data storage area for the control unit 106 in addition to the image data storage area. The operation unit 105 is used for inputting various instructions to the optical device 101.

  The control unit 106 controls the entire imaging apparatus including the optical device 101 and has a function of detecting features such as a subject shape from the output image signal of the signal processing unit 103. The control unit 106 includes a pan driving mechanism 109 and a tilt driving mechanism 110. Drive control. The pan driving mechanism 109 performs a panning operation based on the control of the control unit 106. The tilt drive mechanism 110 performs a tilt operation based on the control of the control unit 106. The transmission / light shielding switching mechanism 111 controls transmission or shielding of incident light from the first objective optical system 15 and the second objective optical system 13 based on the control of the control unit 106.

  Further, the control unit 106 executes the process shown in the flowchart of FIG. 32 based on the control program stored in the storage unit 107. The display unit 108 displays a captured image, and can be installed at a location away from the installation location of the imaging device body (a monitoring center or the like when the imaging device is used as a monitoring camera).

  FIG. 32 is a flowchart showing the flow of the moving object tracking operation after subject recognition by the imaging apparatus equipped with the optical device 101.

  In FIG. 32, the control unit 106 of the imaging apparatus has a pan angle (an angle driven in the pan direction) and a tilt angle (in the tilt direction) set in the second objective optical system 13 of the optical device 101 via the operation unit 105. The driving angle is detected and stored in the storage unit 104 (step S1).

  Next, the control unit 106 controls the transmission / shading switching mechanism 111 to operate the common reflection member 12 so that the subject light from the wide-angle first objective optical system 15 is guided to the common optical system 11 ( Step S2). Next, the control unit 106 recognizes the target subject from the first image range (image circle area indicated by 44 in FIG. 28) obtained by the first objective optical system 15 of the optical device 101 (step S3). Then, a concentric angle θ (FIG. 30) of the target subject is determined from the first image range (step S4).

  Next, the control unit 106 detects the length Y (see FIG. 30) in the radial direction from the image center of the target subject from the first image range (step S5), and the subject direction angle based on the length Y. ω is calculated (step S6). That is, the relative positional relationship between the shooting direction and the target subject direction is detected.

  Next, the control unit 106 calculates a necessary drive angle from the currently set pan angle and tilt angle, the concentric angle θ of the target subject, and the subject direction angle ω (step S7). Then, it is determined whether or not the required drive angle is equal to or greater than a preset specified value (step S8). Here, the necessary drive angle is a drive angle in the pan direction and the tilt direction necessary for tracking the target subject (moving body).

  If the calculated required drive angle is less than the preset specified value, the process returns to step S2. On the other hand, when the calculated required drive angle is equal to or greater than a predetermined value set in advance, the control unit 106 performs driving in the pan direction by the pan driving mechanism 109 and driving in the tilt direction by the tilt driving mechanism 110 (step S9). . Thereafter, the control unit 106 stores the pan angle associated with the driving in the pan direction and the tilt angle associated with the driving in the tilt direction in the storage unit 104 (step S10).

  Next, the control unit 106 controls the transmission / shading switching mechanism 111 to operate the common reflection member 12 so that the subject light from the telephoto second objective optical system 13 is guided to the common optical system 11. As a result, a second image range (image circle region indicated by 45 in FIG. 28) obtained by the second objective optical system 13 is picked up.

  Thereafter, the image signal from the signal processing unit 103 analyzes and determines whether or not the target subject is captured (step S12). If it is determined that the target subject is lost and re-recognition is necessary, Return to step S2.

  The flow of the moving object tracking operation by the imaging apparatus according to the present embodiment has been described above. However, the above-described operation steps do not need to be performed in both the pan direction and the tilt direction, and either one is required as necessary. It can be driven in only one direction.

  Conventionally, for example, in order to recognize a subject at an arbitrary position and capture a detailed image thereof or to perform tracking and shooting of a moving object quickly and accurately, a plurality of imaging devices are generally used. With respect to this point, in the imaging apparatus according to the present embodiment, the above-described imaging can be performed with a single imaging apparatus, and as a result, a compact and low-cost optical apparatus can be realized.

[Numerical example]
Next, aberration diagrams of the optical device according to Numerical Examples 1 to 10 are shown in FIGS.

  FIG. 33 is a diagram illustrating longitudinal aberrations of the fish-eye optical system according to Numerical Example 1.

  FIG. 34 is a diagram showing longitudinal aberrations of the telephoto optical system in the numerical value example 2. FIG.

  FIG. 35 is a diagram illustrating lateral aberration of the wide-angle reflective optical system according to Numerical Example 3.

  FIG. 36 is a diagram showing transverse aberration at the wide-angle end of the wide-angle reflective optical system in Numerical Example 4.

  FIG. 37 is a diagram illustrating longitudinal aberrations at the wide-angle end of the telephoto variable magnification optical system according to Numerical Example 5.

  FIG. 38 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 5.

  FIG. 39 is a diagram showing longitudinal aberrations at the telephoto end of the telephoto variable magnification optical system in the numerical value example 5.

  FIG. 40 is a diagram illustrating longitudinal aberrations at the wide-angle end of the fish-eye optical system according to Numerical Example 6.

  FIG. 41 is a diagram showing longitudinal aberrations at the wide-angle end of the telephoto variable magnification optical system in the numerical value example 7.

  FIG. 42 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 7.

  FIG. 43 is a diagram showing longitudinal aberrations at the telephoto end of the telephoto variable magnification optical system in the numerical value example 7.

  FIG. 44 is a diagram showing longitudinal aberrations at the wide-angle end of the fish-eye optical system in the numerical value example 8.

  FIG. 45 is a diagram showing longitudinal aberrations at the wide-angle end of the telephoto variable magnification optical system in the numerical value example 9.

  FIG. 46 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 9.

  FIG. 47 is a diagram showing longitudinal aberrations at the telephoto end of the telephoto variable magnification optical system in the numerical value example 9.

  FIG. 48 is a diagram showing longitudinal aberrations of the telephoto secondary imaging optical system in the numerical value example 10.

  33 to 48, ΔS indicates a sagittal image plane, and ΔM indicates a meridional image plane.

In each numerical example, Ri is the i-th lens thickness and air spacing in order from the light incident side, and Ni and νi are the refractive index and Abbe number of the glass of the i-th lens in order from the light incident side.
The aspherical coefficients K, A, B, C, D, and E are given by the equation (1) shown in FIG.
Where X is the amount of displacement from the lens apex in the optical axis direction, H is the distance from the optical axis, and R is the radius of curvature.

<Numerical Example 1>
f = 1.08 Fno = 1.48 NA = 0.34 2ω = 168.3 °
R 1 = 18.885 D 1 = 1.20 N 1 = 1.83481 ν 1 = 42.7
R 2 = 6.573 D 2 = 3.63
R 3 = 466.090 D 3 = 1.80 N 2 = 1.88300 ν 2 = 40.8
R 4 = 4.664 D 4 = 12.85
R 5 = 64.434 D 5 = 8.09 N 3 = 1.84666 ν 3 = 23.9
R 6 = -15.593 D 6 = 4.55
R 7 = 27.039 D 7 = 1.80 N 4 = 1.77250 ν 4 = 49.6
R 8 = -78.220 D 8 = 1.00
R 9 = Aperture D 9 = 1.50
R10 = −6.568 D10 = 2.20 N 5 = 1.84666 ν 5 = 23.9
R11 = 6.366 D11 = 2.00 N6 = 1.77250 ν6 = 49.6
R12 = -14.479 D12 = 0.10
R13 = 12.093 D13 = 1.82 N 7 = 1.60311 ν 7 = 60.6
R14 = -12.636 D14 = 0.10
R15 = 7.498 D15 = 1.50 N 8 = 1.83481 ν 8 = 42.7
R16 = 21.068 D16 = 1.50
R17 = ∞ D17 = 4.00 N 9 = 1.51633 ν 9 = 64.1
<Numerical Example 2>
f = 2.51 Fno = 1.5 NA = 0.33 2ω = 35.4 °
R 1 = 59.690 D 1 = 1.70 N 1 = 1.77250 ν 1 = 49.6
R 2 = -35.198 D 2 = 0.15
* R 3 = -114.351 D 3 = 1.00 N 2 = 1.80610 ν 2 = 40.9
* R 4 = 4.627 D 4 = 10.00
R 5 = 64.434 D 5 = 8.09 N 3 = 1.84666 ν 3 = 23.9
R 6 = -15.593 D 6 = 4.46
R 7 = 27.039 D 7 = 1.80 N 4 = 1.77250 ν 4 = 49.6
R 8 = -78.220 D 8 = 1.00
R 9 = Aperture D 9 = 1.50
R10 = −6.568 D10 = 2.20 N 5 = 1.84666 ν 5 = 23.9
R11 = 6.366 D11 = 2.00 N6 = 1.77250 ν6 = 49.6
R12 = -14.479 D12 = 0.10
R13 = 12.093 D13 = 1.82 N 7 = 1.60311 ν 7 = 60.6
R14 = -12.636 D14 = 0.10
R15 = 7.498 D15 = 1.50 N 8 = 1.83481 ν 8 = 42.7
R16 = 21.068 D16 = 1.50
R17 = ∞ D17 = 4.00 N 9 = 1.51633 ν 9 = 64.1
R18 = ∞
・ Aspheric coefficient 3rd surface: K = -3.05503e + 002 A = 0.000000 + 000 B = -4.12397e-004
C = 1.97036e-005 D = -1.79480e-007 E = 0.00000e + 000
4th page: K = 1.10373e-001 A = 0.00000e + 000 B = -7.40181e-004
C = -5.07705e-005 D = 3.38928e-006 E = 0.00000e + 000
<Numerical Example 3>
Fno = 2.1 NA = 0.24
* R 1 = -12.000 D 1 = 20.00
R 2 = 72.840 D 2 = 1.80 N 1 = 1.77250 ν 1 = 49.6
R 3 = -2228.821 D 3 = 0.12
R 4 = 27.317 D 4 = 1.60 N 2 = 1.77250 ν 2 = 49.6
R 5 = 88.452 D 5 = 0.30
* R 6 = 96.287 D 6 = 0.80 N 3 = 1.80518 ν 3 = 25.4
* R 7 = 5.285 D 7 = 10.00
R 8 = 64.434 D 8 = 8.09 N 4 = 1.84666 ν 4 = 23.9
R 9 = -15.593 D 9 = 4.46
R10 = 27.039 D10 = 1.80 N5 = 1.77250 ν5 = 49.6
R11 = -78.220 D11 = 1.00
R12 = Aperture D12 = 1.50
R13 = −6.568 D13 = 2.20 N 6 = 1.84666 ν 6 = 23.9
R14 = 6.366 D14 = 2.00 N 7 = 1.77250 ν 7 = 49.6
R15 = -14.479 D15 = 0.10
R16 = 12.093 D16 = 1.82 N 8 = 1.60311 ν 8 = 60.6
R17 = -12.636 D17 = 0.10
R18 = 7.498 D18 = 1.50 N 9 = 1.83481 ν 9 = 42.7
R19 = 21.068 D19 = 1.50
R20 = ∞ D20 = 4.00 N10 = 1.51633 ν10 = 64.1
R21 = ∞
・ Aspheric coefficient
First side: K = -2.00000e + 000 A = 0.000000 + 000 B = 0.000000 + 000
C = 0.00000e + 000 D = 0.00000e + 000 E = 0.00000e + 000
6th surface: K = -3.05503e + 002 A = 0.000000 + 000 B = -1.12677e-003
C = -3.27765e-005 D = -2.22188e-006 E = 0.00000e + 000
Surface 7: K = 1.15723e-001 A = 0.00000e + 000 B =-1.16248e-003
C = -1.50088e-004 D = -3.68542e-006 E = 0.00000e + 000
<Numerical Example 4>
Fno = 2.5 NA = 0.19
* R 1 = -12.000 D 1 = 19.77
R 2 = 21.137 D 2 = 3.60 N 1 = 1.77250 ν 1 = 49.6
R 3 = 787.493 D 3 = 0.80
* R 4 = -132.870 D 4 = 1.00 N 2 = 1.84666 ν 2 = 23.9
* R 5 = 17.021 D 5 = 6.11
R 6 = ∞ D 6 = 13.50 N 3 = 1.83400 ν 3 = 37.2
R 7 = ∞ D 7 = 0.15
* R 8 = 17.745 D 8 = 3.20 N 4 = 1.58913 ν 4 = 61.2
* R 9 = -21.515 D 9 = 0.00
R10 = −189.656 D10 = 0.60 N 5 = 1.72916 ν 5 = 54.7
R11 = 9.663 D11 = 1.28
R12 = -10.856 D12 = 0.50 N6 = 1.60311 ν6 = 60.6
R13 = 13.442 D13 = 1.50 N 7 = 1.84666 ν 7 = 23.9
R14 = 108.847 D14 = 0.00
R15 = Aperture D15 = 0.60
* R16 = 13.949 D16 = 2.00 N 8 = 1.69350 ν 8 = 53.2
* R17 = -55.208 D17 = 0.00
R18 = −92.686 D18 = 0.60 N 9 = 1.64769 ν 9 = 33.8
R19 = 9.042 D19 = 1.60 N10 = 1.80518 ν10 = 25.4
R20 = 22.476 D20 = 0.00
R21 = 13.130 D21 = 0.60 N11 = 1.84666 ν11 = 23.9
R22 = 7.714 D22 = 3.50 N12 = 1.48749 ν12 = 70.2
R23 = -15.054 D23 = 0.15
* R24 = 11.585 D24 = 1.80 N13 = 1.52280 ν13 = 62.3
R25 = 16.756 D25 = 0.00
R26 = 23.806 D26 = 1.25 N14 = 1.88300 ν14 = 40.8
R27 = 6.466 D27 = 3.77 N15 = 1.48749 ν15 = 70.2
R28 = 258.606 D28 = 0.00
R29 = ∞ D29 = 2.00 N16 = 1.51633 ν16 = 64.1
R30 = ∞
・ Aspheric coefficient
First side: K = -2.20000e + 000 A = 0.00000e + 000 B = 0.00000e + 000
C = 0.00000e + 000 D = 0.00000e + 000 E = 0.00000e + 000
4th page: K = 7.30117e-004 A = 0.000000 + 000 B = -1.63313e-004
C = 1.09260e-006 D = 0.00000e + 000 E = 0.00000e + 000
Fifth side: K = -3.12547e-002 A = 0.000000 + 000 B = -2.45102e-004
C = 2.00934e-006 D = 0.00000e + 000 E = 0.00000e + 000
8th page: K = 2.89732e + 000 A = 0.00000e + 000 B = -9.11558e-005
C = 2.46766e-006 D = -8.04498e-008 E = 1.50874e-009
Surface 9: K = 2.27135e + 000 A = 0.00000e + 000 B = 4.75217e-005
C = 3.52674e-006 D = -9.84940e-008 E = 2.04550e-009
16th surface: K = 2.61714e + 000 A = 0.000000 + 000 B = 5.08672e-005
C = -2.05979e-005 D = 3.83826e-006 E = -1.84585e-007
17th page: K = -1.25046e + 002 A = 0.000000 + 000 B = 2.53545e-004
C = -2.29193e-005 D = 4.38482e-006 E = -1.97983e-007
<Numerical example 5>
f = 6.35 to 29.98 Fno = 3.55 to 4.47 NA = 0.14 to 0.11
2ω = 31.6 ° ～ 6.9 °
R 1 = 27.233 D 1 = 1.00 N 1 = 1.84666 ν 1 = 23.9
R 2 = 12.108 D 2 = 3.37
R 3 = ∞ D 3 = 13.50 N 2 = 1.83400 ν 2 = 37.2
R 4 = ∞ D 4 = 0.15
* R 5 = 17.745 D 5 = 3.20 N 3 = 1.58913 ν 3 = 61.2
* R 6 = -21.515 D 6 = Variable
R 7 = -189.656 D 7 = 0.60 N 4 = 1.72916 ν 4 = 54.7
R 8 = 9.663 D 8 = 1.28
R 9 = -10.856 D 9 = 0.50 N 5 = 1.60311 ν 5 = 60.6
R10 = 13.442 D10 = 1.50 N 6 = 1.84666 ν 6 = 23.9
R11 = 108.847 D11 = variable
R12 = Aperture D12 = 0.60
* R13 = 13.949 D13 = 2.00 N 7 = 1.69350 ν 7 = 53.2
* R14 = -55.208 D14 = variable
R15 = -92.686 D15 = 0.60 N 8 = 1.64769 ν8 = 33.8
R16 = 9.042 D16 = 1.60 N9 = 1.80518 ν9 = 25.4
R17 = 22.476 D17 = Variable
R18 = 13.130 D18 = 0.60 N10 = 1.84666 ν10 = 23.9
R19 = 7.714 D19 = 3.50 N11 = 1.48749 ν11 = 70.2
R20 = -15.054 D20 = 0.15
* R21 = 11.585 D21 = 1.80 N12 = 1.52280 ν12 = 62.3
R22 = 16.756 D22 = Variable
R23 = 23.806 D23 = 1.25 N13 = 1.88300 ν13 = 40.8
R24 = 6.466 D24 = 3.77 N14 = 1.48749 ν14 = 70.2
R25 = 258.606 D25 = variable
R26 = ∞ D26 = 2.00 N15 = 1.51633 ν15 = 64.1
R27 = ∞

\ Focal length 6.35 12.39 29.98
Variable interval \
D 6 0.50 7.04 13.59
D11 13.69 7.14 0.60
D14 0.45 0.45 0.45
D17 6.76 4.23 1.62
D22 0.75 3.28 5.89
D25 6.00 6.00 6.00
・ Aspheric coefficient
Fifth side: K = 2.89732e + 000 A = 0.00000e + 000 B = -9.11558e-005
C = 2.46766e-006 D = -8.04498e-008 E = 1.50874e-009
Side 6: K = 2.27135e + 000 A = 0.00000e + 000 B = 4.75217e-005
C = 3.52674e-006 D = -9.84940e-008 E = 2.04550e-009

Side 13: K = 2.61714e + 000 A = 0.00000e + 000 B = 5.08672e-005
C = -2.05979e-005 D = 3.83826e-006 E = -1.84585e-007

14th: K = -1.25046e + 002 A = 0.000000 + 000 B = 2.53545e-004
C = -2.29193e-005 D = 4.38482e-006 E = -1.97983e-007

21st surface: K = 2.54164e + 000 A = 0.00000e + 000 B = -1.85457e-004
C = -7.88873e-006 D = 3.08221e-007 E = -9.96643e-009
<Numerical Example 6>
f = 2.19 Fno = 3.26 NA = 0.15 2ω = 171.0 °
R 1 = 36.775 D 1 = 2.50 N 1 = 1.77250 ν 1 = 49.6
R 2 = 18.294 D 2 = 16.74
R 3 = -97.434 D 3 = 2.00 N 2 = 1.80610 ν 2 = 40.9
R 4 = 20.684 D 4 = 2.98
R 5 = 43.550 D 5 = 3.00 N 3 = 1.69680 ν 3 = 55.5
R 6 = 81.881 D 6 = 12.22
R 7 = -28.470 D 7 = 3.00 N 4 = 1.84666 ν 4 = 23.9
R 8 = -25.016 D 8 = 21.15
* R 9 = 21.335 D 9 = 2.50 N 5 = 1.61800 ν 5 = 63.3
* R10 = -49.105 D10 = variable
R11 = 77.468 D11 = 0.60 N6 = 1.72916 ν6 = 54.7
R12 = 9.706 D12 = 1.24
R13 = -11.629 D13 = 0.50 N7 = 1.60311 ν7 = 60.6
R14 = 15.020 D14 = 1.50 N 8 = 1.84666 ν 8 = 23.9
R15 = 53.093 D15 = variable
R16 = Aperture D16 = 0.60
* R17 = 13.385 D17 = 2.00 N 9 = 1.69350 ν 9 = 53.2
* R18 = -56.781 D18 = 0.45
R19 = -1410.339 D19 = 0.60 N10 = 1.64769 ν10 = 33.8
R20 = 8.666 D20 = 1.60 N11 = 1.80518 ν11 = 25.4
R21 = 18.656 D21 = Variable
R22 = 13.719 D22 = 0.60 N12 = 1.84666 ν12 = 23.9
R23 = 7.523 D23 = 3.50 N13 = 1.48749 ν13 = 70.2
R24 = -19.369 D24 = 0.15
* R25 = 11.357 D25 = 1.80 N14 = 1.52280 ν14 = 62.3
R26 = 19.903 D26 = Variable
R27 = 16.278 D27 = 1.42 N15 = 1.88300 ν15 = 40.8
R28 = 6.564 D28 = 3.52 N16 = 1.48749 ν16 = 70.2
R29 = 37.624 D29 = 6.00
R30 = ∞ D30 = 3.00 N17 = 1.51633 ν17 = 64.1
R31 = ∞

\ Focal length 2.19 3.94 10.54
Variable interval \
D10 0.50 7.04 13.59
D15 13.70 7.15 0.61
D21 10.30 6.99 0.61
D26 0.78 4.10 10.48

・ Aspheric coefficient
9th: K = 2.92618e + 000 A = 0.000000 + 000 B = -5.16439e-005
C = 1.92101e-006 D = -1.05228e-007 E = 9.550325e-010
10th surface: K = 2.21227e + 000 A = 0.00000e + 000 B = 1.06599e-006
C = 2.05150e-006 D = -1.17857e-007 E = 1.32070e-009
Surface 17: K = 1.10143e + 000 A = 0.00000e + 000 B = 1.00738e-004
C = -1.39131e-005 D = 4.21520e-006 E = -1.57702e-007
18th surface: K = -1.24713e + 002 A = 0.000000 + 000 B = 2.21519e-004
C = -1.31403e-005 D = 4.80345e-006 E = -1.82939e-007
25th surface: K = 2.15826e + 000 A = 0.000000 + 000 B = -1.22398e-004
C = -6.06877e-006 D = 4.07232e-007 E = -1.46126e-00

<Numerical Example 7>
f = 6.35 to 29.71 Fno = 3.30 to 5.15 NA = 0.15 to 0.10
2ω = 31.6 ° ～ 6.9 °
R 1 = 25.467 D 1 = 1.00 N 1 = 1.80809 ν 1 = 22.8
R 2 = 15.992 D 2 = 21.15
* R 3 = 21.335 D 3 = 2.50 N 2 = 1.61800 ν 2 = 63.3
* R 4 = -49.105 D 4 = Variable
R 5 = 77.468 D 5 = 0.60 N 3 = 1.72916 ν 3 = 54.7
R 6 = 9.706 D 6 = 1.24
R 7 = -11.629 D 7 = 0.50 N 4 = 1.60311 ν 4 = 60.6
R 8 = 15.020 D 8 = 1.50 N 5 = 1.84666 ν 5 = 23.9
R 9 = 53.093 D 9 = variable
R10 = Aperture D10 = 0.60
* R11 = 13.385 D11 = 2.00 N 6 = 1.69350 ν 6 = 53.2
* R12 = -56.781 D12 = 0.45
R13 = -1410.339 D13 = 0.60 N 7 = 1.64769 ν 7 = 33.8
R14 = 8.666 D14 = 1.60 N 8 = 1.80518 ν 8 = 25.4
R15 = 18.656 D15 = Variable
R16 = 13.719 D16 = 0.60 N9 = 1.84666 ν9 = 23.9
R17 = 7.523 D17 = 3.50 N10 = 1.48749 ν10 = 70.2
R18 = -19.369 D18 = 0.15
* R19 = 11.357 D19 = 1.80 N11 = 1.52280 ν11 = 62.3
R20 = 19.903 D20 = variable
R21 = 16.278 D21 = 1.42 N12 = 1.88300 ν12 = 40.8
R22 = 6.564 D22 = 3.52 N13 = 1.48749 ν13 = 70.2
R23 = 37.624 D23 = 6.00
R24 = ∞ D24 = 3.00 N14 = 1.51633 ν14 = 64.1
R25 = ∞

\ Focal length 6.35 11.46 29.71
Variable interval \
D 4 0.50 7.04 13.59
D 9 13.70 7.15 0.61
D15 10.30 7.04 0.61
D20 0.78 4.05 10.48

・ Aspheric coefficient
Third side: K = 2.92618e + 000 A = 0.000000 + 000 B = -5.16439e-005
C = 1.92101e-006 D = -1.05228e-007 E = 9.550325e-010
4th page: K = 2.21227e + 000 A = 0.00000e + 000 B = 1.06599e-006
C = 2.05150e-006 D = -1.17857e-007 E = 1.32070e-009
11th surface: K = 1.10143e + 000 A = 0.00000e + 000 B = 1.00738e-004
C = -1.39131e-005 D = 4.21520e-006 E = -1.57702e-007
12th surface: K = -1.24713e + 002 A = 0.000000 + 000 B = 2.21519e-004
C = -1.31403e-005 D = 4.80345e-006 E = -1.82939e-007
19th surface: K = 2.15826e + 000 A = 0.000000 + 000 B = -1.22398e-004
C = -6.06877e-006 D = 4.07232e-007 E = -1.46126e-008
<Numerical Example 8>
f = 1.99 Fno = 4.0 NA = 0.13 2ω = 170.0 °
R 1 = 35.000 D 1 = 1.50 N 1 = 1.77250 ν 1 = 49.6
R 2 = 4.995 D 2 = 5.20
R 3 = -13.672 D 3 = 1.20 N 2 = 1.88300 ν 2 = 40.8
R 4 = 62.615 D 4 = 3.07
R 5 = 16.055 D 5 = 2.20 N 3 = 1.74400 ν 3 = 44.8
R 6 = 310.414 D 6 = 2.00
R 7 = 19.406 D 7 = 2.20 N 4 = 1.69680 ν 4 = 55.5
R 8 = 47.737 D 8 = 14.08
* R 9 = -10.328 D 9 = 1.40 N 5 = 1.84666 ν 5 = 23.9
R10 = −8.641 D10 = 0.70 N 6 = 1.48749 ν 6 = 70.2
R11 = 42.143 D11 = 8.03
R12 = Aperture D12 = 0.30
* R13 = 4.336 D13 = 2.20 N 7 = 1.74320 ν 7 = 49.3
* R14 = -13.726 D14 = 0.30
R15 = −8.403 D15 = 0.60 N 8 = 1.69895 ν 8 = 30.1
R16 = 4.277 D16 = 0.24
R17 = 7.720 D17 = 1.70 N9 = 1.60311 ν9 = 60.6
R18 = -16.517 D18 = 5.00
R19 = ∞ D19 = 1.25 N10 = 1.51633 ν10 = 64.1
R20 = ∞
・ Aspheric coefficient
Surface 9: K = -6.36822e-001 A = 0.000000 + 000 B = -7.06419e-005
C = -6.56359e-006 D = 1.58657e-007 E = 5.20652e-010
Side 13: K = -1.12637e-001 A = 0.00000e + 000 B = 3.20201e-004
C = 4.61140e-004 D = -1.25420e-004 E = 1.74047e-005
14th surface: K = 1.18881e + 000 A = 0.00000e + 000 B = 2.34714e-003
C = 2.10460e-004 D = -4.03980e-005 E = 1.65917e-005
<Numerical Example 9>
f = 6.54 to 11.78 Fno = 3.54 to 4.78 NA = 0.14 to 0.10
2ω = 57.0 ° to 33.5 °
R 1 = -152.692 D 1 = 1.00 N 1 = 1.69680 ν 1 = 55.5
R 2 = 46.600 D 2 = 14.08
* R 3 = -10.328 D 3 = 1.40 N 2 = 1.84666 ν 2 = 23.9
R 4 = -8.641 D 4 = 0.70 N 3 = 1.48749 ν 3 = 70.2
R 5 = 42.143 D 5 = Variable
R 6 = Aperture D 6 = 0.30
* R 7 = 4.336 D 7 = 2.20 N 4 = 1.74320 ν 4 = 49.3
* R 8 = -13.726 D 8 = 0.30
R 9 = -8.245 D 9 = 0.60 N 5 = 1.69895 ν 5 = 30.1
R10 = 4.277 D10 = 0.24
R11 = 7.720 D11 = 1.70 N6 = 1.60311 ν6 = 60.6
R12 = -16.517 D12 = variable
R13 = ∞ D13 = 1.25 N 7 = 1.51633 ν 7 = 64.1
R14 = ∞

\ Focal length 6.54 9.81 11.78
Variable interval \
D 5 8.03 2.74 0.98
D12 5.00 7.37 8.79

・ Aspheric coefficient
Third side: K = -6.36822e-001 A = 0.000000e + 000 B = -7.06419e-005
C = -6.56359e-006 D = 1.58657e-007 E = 5.20652e-010
7th page: K = -1.12637e-001 A = 0.000000 + 000 B = 3.20201e-004
C = 4.61140e-004 D = -1.25420e-004 E = 1.74047e-005
8th page: K = 1.18881e + 000 A = 0.00000e + 000 B = 2.34714e-003
C = 2.10460e-004 D = -4.03980e-005 E = 1.65917e-005
<Numerical Example 10>
f = -2.55 Fno = 2.50 NA = 0.20 2ω = 34.8 °
R 1 = -5.590 D 1 = 1.10 N 1 = 1.88300 ν 1 = 40.8
R 2 = -12.089 D 2 = 0.12
R 3 = 3.848 D 3 = 1.80 N 2 = 1.48749 ν 2 = 70.2
R 4 = 17.036 D 4 = 1.00
R 5 = Sub-aperture D 5 = 1.00
R 6 = 13.806 D 6 = 2.00 N 3 = 1.84666 ν 3 = 23.9
R 7 = 3.849 D 7 = 1.36
R 8 = 21.513 D 8 = 1.70 N 4 = 1.71300 ν 4 = 53.9
R 9 = -4.104 D 9 = 8.75
R10 = 54.980 D10 = 1.40 N 5 = 1.48749 ν 5 = 70.2
R11 = -13.136 D11 = 0.12
R12 = 3.641 D12 = 2.80 N6 = 1.48749 ν6 = 70.2
R13 = -17.920 D13 = 0.36
R14 = -5.925 D14 = 0.80 N 7 = 1.88300 ν 7 = 40.8
R15 = -90.733 D15 = 13.86
R16 = 64.434 D16 = 8.09 N8 = 1.84666 ν8 = 23.9
R17 = -15.593 D17 = 4.55
R18 = 27.039 D18 = 1.80 N 9 = 1.77250 ν 9 = 49.6
R19 = -78.220 D19 = 1.00
R20 = Aperture D20 = 1.50
R21 = −6.568 D21 = 2.20 N10 = 1.84666 ν10 = 23.9
R22 = 6.366 D22 = 2.00 N11 = 1.77250 ν11 = 49.6
R23 = -14.479 D23 = 0.10
R24 = 12.093 D24 = 1.82 N12 = 1.60311 ν12 = 60.6
R25 = -12.636 D25 = 0.10
R26 = 7.498 D26 = 1.50 N13 = 1.83481 ν13 = 42.7
R27 = 21.068 D27 = 1.50
R28 = ∞ D28 = 4.00 N14 = 1.51633 ν14 = 64.1
R29 = ∞
The object of the present invention can also be achieved by executing the following processing. That is, a storage medium that records a program code of software that realizes the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus is stored in the storage medium. This is the process of reading the code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code and the storage medium storing the program code constitute the present invention.

  Moreover, the following can be used as a storage medium for supplying the program code. For example, floppy (registered trademark) disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM or the like. Alternatively, the program code may be downloaded via a network.

  Further, the present invention includes a case where the function of the above-described embodiment is realized by executing the program code read by the computer. In addition, an OS (operating system) running on the computer performs part or all of the actual processing based on an instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Is also included.

  Furthermore, a case where the functions of the above-described embodiment are realized by the following processing is also included in the present invention. That is, the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, based on the instruction of the program code, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing.

It is sectional drawing which shows schematic structure of the optical apparatus concerning 1st Embodiment. It is a cross-sectional schematic diagram which shows the example of the common reflection member using the reflective mirror provided with the rotation drive mechanism. It is a cross-sectional schematic diagram which shows the example of the common reflection member using a prism. It is a cross-sectional schematic diagram which shows the example of the common reflection member using a prism. It is a cross-sectional schematic diagram which shows the example of the common reflection member using a prism. FIG. 2 is an optical path diagram illustrating a first concrete example of the optical device illustrated in FIG. 1. It is a schematic sectional drawing which shows the rotation drive mechanism of a 2nd objective optical system and a common reflection member. It is a block diagram of the wide-angle optical system which concerns on the 1st concrete example to which the numerical value shown in Numerical Example 1 is applied. It is a block diagram of the telephoto optical system which concerns on the 1st concrete example to which the numerical value shown in Numerical Example 2 is applied. FIG. 6 is an optical path diagram illustrating a second concrete example of the optical device illustrated in FIG. 1. It is a block diagram of the wide angle optical system which concerns on the 2nd concrete example (FIG. 10) to which the numerical value shown in Numerical Example 6 is applied. It is a block diagram of the telephoto optical system which concerns on the 2nd concrete example (FIG. 10) to which the numerical value shown in Numerical Example 7 is applied. FIG. 6 is an optical path diagram illustrating a third concrete example of the optical device illustrated in FIG. 1. It is a block diagram of the wide angle optical system which concerns on FIG. 13 with which the numerical value shown in Numerical Example 8 is applied. It is a block diagram of the telephoto optical system in FIG. 13 to which the numerical value shown in Numerical Example 9 is applied. It is sectional drawing which shows schematic structure of the optical apparatus concerning 2nd Embodiment. FIG. 17 is an optical path diagram illustrating a first concrete example of the optical device illustrated in FIG. 16. It is a block diagram of the wide angle optical system which concerns on the 1st concrete example (FIG. 16) to which the numerical value shown in Numerical Example 3 is applied. FIG. 17 is an optical path diagram illustrating a second concrete example of the optical device illustrated in FIG. 16. It is a block diagram of the wide-angle optical system in FIG. 19 to which the numerical value shown in Numerical Example 4 is applied. It is a block diagram of the telephoto optical system which concerns on the 2nd concrete example (FIG. 19) to which the numerical value shown in Numerical Example 5 is applied. It is sectional drawing which shows schematic structure of the optical apparatus concerning 3rd Embodiment. FIG. 23 is an optical path diagram illustrating a first concrete example of the optical device illustrated in FIG. 22. It is a block diagram of the telephoto optical system which concerns on the 1st concrete example (FIG. 23) to which the numerical value shown in Numerical Example 10 is applied. FIG. 23 is an optical path diagram showing a second concrete example of the optical device shown in FIG. 22. It is sectional drawing which shows schematic structure of the optical apparatus concerning 4th Embodiment. FIG. 27 is an optical path diagram illustrating a concrete example of the optical device illustrated in FIG. 26. It is a conceptual diagram which shows the example of installation of the imaging device carrying the optical device which concerns on any of 1st-4th embodiment. It is sectional drawing which shows schematic structure of the mechanism of the imaging device in FIG. It is a conceptual diagram which shows the initial state image at the time of the object recognition by an imaging device. It is a block diagram which shows the electrical structural example of an imaging device. It is a flowchart which shows the flow of the moving body tracking operation | movement after performing object recognition by an imaging device. It is a figure which shows the longitudinal aberration of the fish-eye optical system of Numerical Example 1. FIG. 6 is a diagram illustrating longitudinal aberrations of a telephoto optical system according to Numerical Example 2. FIG. 10 is a diagram illustrating lateral aberration of the wide-angle reflective optical system in Numerical Example 3. FIG. 10 is a diagram showing transverse aberration at the wide-angle end of the wide-angle reflective optical system in Numerical Example 4. 10 is a diagram illustrating longitudinal aberrations at the wide-angle end of a telephoto variable magnification optical system according to Numerical Example 5. FIG. 10 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 5. FIG. 10 is a diagram illustrating longitudinal aberrations at a telephoto end of a telephoto variable magnification optical system according to Numerical Example 5. FIG. It is a figure which shows the longitudinal aberration in the wide-angle end of the fisheye optical system of Numerical Example 6. It is a figure which shows the longitudinal aberration in the wide angle end of the telephoto variable magnification optical system of Numerical Example 7. FIG. 10 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 7. It is a figure which shows the longitudinal aberration in the telephoto end of the telephoto variable magnification optical system of Numerical Example 7. It is a figure which shows the longitudinal aberration in the wide-angle end of the fish-eye optical system of Numerical Example 8. It is a figure which shows the longitudinal aberration in the wide angle end of the telephoto variable magnification optical system of Numerical Example 9. 10 is a diagram illustrating longitudinal aberrations in the middle of the telephoto variable magnification optical system according to Numerical Example 9. FIG. 10 is a diagram illustrating longitudinal aberrations at a telephoto end of a telephoto variable magnification optical system according to Numerical Example 9. FIG. FIG. 11 is a diagram illustrating longitudinal aberrations of the telephoto secondary imaging optical system in the numerical value example 10. It is a figure which shows the numerical formula which calculates the displacement amount to an optical axis direction from a lens vertex.

Explanation of symbols

IP imaging device 11 common optical system 12 common reflecting member 12-1 reflecting member 12-2 prism 12-3 light shielding plate 12-4 density variable member 12-5 linear polarizing plate 13 second objective optical system 15 first objective optical system 16 Light shielding member 15A First objective optical system 15A-1 Reflecting member 13A Second objective optical system 13B Second objective optical system

Claims (15)

A plurality of objective optical systems for capturing subject light; and a common optical system through which light beams that have passed through each objective optical system pass in common, and subject images generated by the objective optical system and the common optical system. An optical device for imaging,
A selection optical member for selectively guiding any of subject light captured by the plurality of objective optical systems to the common optical system;
At least one of the plurality of objective optical systems includes a wide-angle objective optical system that captures an omnidirectional subject image around the optical axis, or an object for forming a wider-angle subject image than the other objective optical system. An optical apparatus comprising an optical system.   2. The optical apparatus according to claim 1, wherein the objective optical system for forming a subject image having a wider angle than the other objective optical system is constituted by a refractive optical system having a photographing field angle of 90 ° or more. .   The wide-angle objective optical system includes a convex reflecting member having a convex surface in the traveling direction of incident light or a conical reflecting member having a vertex directed in the traveling direction of incident light. The optical device described.   The optical apparatus according to claim 2, wherein the wide-angle objective optical system is a fish-eye optical system.   5. The optical apparatus according to claim 1, wherein the selection optical member includes a light shielding unit that selectively shields incident light from the plurality of objective optical systems. 6.   The optical apparatus according to claim 5, wherein the light shielding unit is configured using a movable light shielding plate.   The optical apparatus according to claim 5, wherein the light shielding unit is configured by using a density variable member including liquid crystal.   The optical apparatus according to claim 5, wherein the light shielding unit is configured using a movable polarizing plate.   5. The composite optical system of an arbitrary objective optical system among the plurality of objective optical systems and the common optical system constitutes a variable magnification optical system. 6. Optical device.   The optical apparatus according to claim 9, wherein when the selection optical member selects object light from the wide-angle objective optical system, the zoom optical system is set to a specified zoom state.   9. The optical apparatus according to claim 1, wherein the subject images captured from the plurality of objective optical systems are formed at the same position on the optical axis.   The optical apparatus according to claim 1, wherein at least one objective optical system of the plurality of objective optical systems includes a movable unit for changing a photographing direction. An imaging apparatus in which the optical device according to any one of claims 1 to 12 is mounted,
Imaging means for photoelectrically converting a subject image formed by the optical device into an electrical signal;
A pan driving mechanism for driving the optical device in a pan direction, or
An image pickup apparatus comprising any one of a tilt drive mechanism that drives the optical device in a tilt direction. A plurality of objective optical systems for capturing subject light, a common optical system through which light beams that have passed through each objective optical system pass in common, and subject light captured by the plurality of objective optical systems are selectively selected. A selection optical member for guiding to a common optical system, and at least one of the plurality of objective optical systems is an omnidirectional subject image around the optical axis, or a subject image having a wider angle than the other objective optical system. The objective optical system is configured to capture a subject image generated by any one of the plurality of objective optical systems and the common optical system, and any one of a pan direction and a tilt direction is formed. A control method of an optical device capable of driving,
A target object is recognized from an image range of an objective optical system that captures an omnidirectional object image around the optical axis or a wider-angle object image than the other objective optical system, and an objective optical system different from the objective optical system. A detection step of detecting a relative positional relationship between the shooting direction and the target subject direction;
A calculation step of calculating a necessary drive angle in either the pan direction or the tilt direction based on the detected relative position;
And a driving step of driving the other objective optical system in any one of a pan direction and a tilt direction when the calculated required driving angle is equal to or greater than a specified value. .   The program for making a computer perform the control method of the optical apparatus of Claim 14.

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