JP3265091B2 - Compound eye imaging system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound eye imaging system used for a silver halide camera, a video camera, a still video camera, and the like.

[0002]

2. Description of the Related Art In recent years, as an imaging apparatus capable of performing three-dimensional imaging and panoramic imaging, many compound-eye imaging systems having a plurality of imaging systems have been proposed. In these compound-eye imaging systems, generally, two photographing lenses of the same specification are moved right and left so that the angle between the optical axes of the two photographing lenses parallel or directed to the subject (hereinafter referred to as the convergence angle) becomes a predetermined angle. Are lined up. Then, one image is obtained by synthesizing the two images simultaneously captured by the left and right photographing lenses using some image synthesizing means. As a method of combining two images, for example, an image of a subject is captured by a camera or the like using a photoelectric conversion element that converts incident light into an electric quantity, and the captured image is subjected to image combining processing using an image processing circuit. Methods of doing so are known. Further, a stereoscopic image can be obtained by stereoscopically viewing two images captured by a silver halide camera using a known stereo unit.

[0003]

However, in the above-described compound-eye image pickup system, the characteristics and incorporation of the respective lenses vary when the photographing lens is manufactured or assembled. For this reason, even if a photographic lens of the same specification is used for the compound-eye imaging system, the focal length of the lens, the F-number representing the brightness of the lens, and the optical axis angle of the photographic lens are slightly different, and the Even when shooting is performed under the same shooting conditions, the shooting magnification and the shooting light amount differ between the two shooting lenses. Moreover, in the compound-eye imaging system, the corresponding points of the two images are extracted from the overlapping portion of the image areas photographed by the two photographing lenses, and the two images are synthesized based on the corresponding points. ,
In such image synthesizing processing, when the photographing magnification or the photographing light amount of two images is different, after extracting corresponding points of the two images, the photographing conditions of these images are made the same in image processing. Processing is required. Also,
In this compound-eye imaging system, the angle of the optical axis of the imaging lens with respect to the imaging surface shifts due to the eccentricity of the lens in the imaging lens, and the image captured on the imaging surface shifts according to the shift of each angle. Such an angle shift is caused particularly by movement of the lens during zooming or focusing of the photographing lens, and the direction in which the shift occurs and the amount of the shift differ among the photographing lenses. for that reason,
For each image, it is necessary to correct the image misalignment by performing different image processing according to the zooming and focusing operations of the taking lens. This also complicates the processing. As described above, in the imaging apparatus using the conventional compound-eye imaging system, the imaging magnification and the imaging light amount are different, and the image is shifted due to the eccentricity of the lens. Needed treatment. On the other hand, when a stereo camera using a silver halide film as an imaging medium is used, it takes a lot of time to select a photographing lens or a photograph and adjust a photographing lens in order to perform a suitable image synthesis by stereoscopic vision. I will.

Therefore, as a method of solving the above-mentioned lens eccentricity, as disclosed in US Pat. No. 5,122,650 and US Pat. No. 5,191,203, the radius of curvature of the lens and Two lenses with the same thickness are arranged side by side so that each lens is parallel or at a certain angle of convergence to form a lens pair, and a multi-eye imaging system is constructed using a plurality of these lens pairs. Endoscopes have been proposed. In a method of configuring an imaging system using a plurality of lens pairs, for example, when one lens pair of the plurality of lens pairs is decentered in parallel, two images formed on the imaging surface are in the same direction. Shift by the same amount. Therefore, the image shift can be corrected by simply shifting the image by the shift amount from the reference image forming point to the point actually formed. As described above, using a lens pair composed of two lenses having the same radius of curvature and wall thickness to constitute a photographing lens is very effective for problems such as lens eccentricity in a compound-eye imaging system. However, in the above-mentioned patent specification, since the object distance and the magnification are fixed, there is no mechanism for performing focusing and zooming by moving the lens pair, and the imaging device when performing focusing and zooming is not provided. No mention is made of any structural problems and their countermeasures. Furthermore, there is no disclosure of a technique for changing a convergence angle and a base line length that is important for stereoscopic vision.

On the other hand, there are two methods of changing the convergence angle and the base line length, which are important for stereoscopic vision, by changing a convergence angle and a base line length by moving a plurality of lens bodies, and a reflection optical system arranged in front of the lens body. There are two known methods of moving a part of the member to change the convergence angle and the base line length. In the former case, since each lens is moved in a different direction to change the convergence angle and the base line length, it is not suitable for a compound-eye imaging system using a lens pair. In the latter case, since the portion for changing the convergence angle and the base line length can be separated from the lens body, it can be applied to a compound-eye imaging system using a lens pair. As the latter method, there has been proposed a method of providing a reflecting optical member with a prism system and changing the convergence angle by rotating the prism (see Japanese Patent Application Laid-Open No. 2-276395). However, in the proposed technique, the imaging system behind the reflecting optical member is not a lens pair but is composed of two separately manufactured imaging lenses. As a result, fluctuations in photographing magnification and light amount between photographing lenses, or image deviation due to eccentricity of the lens occur, and a good synthesized image cannot be easily obtained.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce fluctuations in photographing magnification and photographing light amount between photographing lenses, to facilitate correction of image shift, and to reduce a convergence angle and a base line length of a compound-eye image pickup system. An object of the present invention is to provide a compound-eye imaging system capable of adjusting to suitable image synthesis conditions.

[0007]

According to the present invention, there is provided a compound eye imaging system comprising:
Keep a pair of lenses with the same thickness and radius of curvature
A plurality of lens pairs formed as an integral body held by a holding member constitute a photographic lens, and a pair of imaging lenses is formed.
A compound eye image pickup system to form respective image on the element,
A drive shaft provided between a pair of lenses forming a lens pair
A pair of lenses moving means for moving a part or all of the plurality of lenses pair shift, and focusing means for moving the particular lens pair by controlling the lens pair moving means for adjusting the focus of the photographing lens an imaging zooming means for changing the imaging magnification of the photographing lens by moving a particular lens pair by controlling the lens pair moving means, the holding
Guys provided at both ends of the member with the drive shaft
A particular lens by engaging the
The guide bar has a guide bar
And a pair of pair moving and holding means .

[0008] The edge of one lens and the edge of the other lens are integrally molded so that the optical axes of the pair of lenses constituting the lens pair are parallel to the same direction. It is characterized by being.

[0009]

[0010]

[0011]

A convergence angle / base line variable means for changing at least one or both of the convergence angle and the base line length of the compound-eye imaging system is provided on the subject side of the photographing lens.

The convergence angle / base line length varying means is provided corresponding to each optical axis of the photographing lens.
It is a reflection optical system having a fixed mirror and a movable / rotatable reflection mirror.

[0014]

As described above, if a lens pair formed by integrally forming a plurality of lenses having the same radius of curvature and thickness is used as a photographing lens of a compound-eye imaging system, manufacturing and assembling of the lens of the compound-eye imaging system is as follows. Manufacturing and assembling are not performed for each photographing lens as in the related art, but manufacturing and assembling are performed for each lens pair. Therefore, the variation between the photographing lenses during the production and assembly of the lens is reduced.

When zooming of the image pickup apparatus is performed, the lens pair moving means is controlled by the focusing means, and the lens pair moving means sets a specific lens pair as a driving part with a central portion between the lens pairs as a driving part. Move the area. Further, when focusing is performed, the lens pair moving unit is controlled by the imaging magnification changing unit, and the lens pair moving unit moves a specific lens pair in a predetermined range using a central portion between the lens pairs as a driving portion. The movement of the lens pair at this time is performed by rotating a drive shaft provided at a central portion between the lens pairs. If the movement of the lens pair causes tilt and eccentricity of the lens, the lens tilts at an angle around the center of the lens pair. At this time, since each lens constituting this lens pair is tilted at the same angle with respect to each optical axis of the taking lens, the images captured on the imaging surface are displaced in the same direction, so that correction is easy. It is. However, the amount of image shift due to the tilt eccentricity is different. Also, this
Guides provided at both ends of the pair of holding members
Lens pair can be moved freely by engaging the guide
Move and hold a lens pair consisting of guide bars
Means to reduce parallel eccentricity.
Can, even if the parallel decentering, since deviation of the image by the parallel decentering does not occur only in very small in the same direction on the imaging surface complement
Positive is easy.

Next, the base line length and the convergence angle of the image pickup device are changed by moving or rotating the convergence angle / base line length varying means provided on the subject side of the photographing lens on the left and right sides. Here, when the convergence angle / base line length varying units are moved in directions approaching each other, the base line length of the imaging apparatus can be reduced, and when the convergence angle / base line length varying units are moved away from each other, the base line length can be increased. In addition, when the convergence angle / base line length varying means is rotated by a predetermined angle in directions opposite to each other, the convergence angle of the imaging device can be changed. Examples of these convergence angle / base line length variable means include those using a movable and rotatable reflection mirror as described later.

[0017]

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

FIG. 1A is a schematic sectional view showing the main components of a compound-eye imaging system according to a first embodiment of the present invention, and FIG. 1B is a front view of the compound-eye imaging system.

In this compound-eye imaging system, a pair of convex lenses 2, 4 are formed by integrating two lenses having the same radius of curvature and the same thickness so that the optical axes of the lenses are parallel to the same direction. And a taking lens constituted by a concave lens pair 3. These lens pairs are
From the object side, a convex lens pair 2, a concave lens pair 3, and a convex lens pair 4 are sequentially arranged and provided so as to be parallel to each other. The convex lens pair 2 has two lenses 2 a and 2 b having the same curvature radius and the same thickness, and these lenses are fixed integrally by a lens holding member 9. Similarly, the convex lens pair 4 and the concave lens pair 3 have their respective lenses fixed integrally by a lens holding member 9. A drive shaft 6 for moving these lens pairs in parallel with the optical axes 1a and 1b of the photographing lens is provided so that the center of the lens holding member 9 serves as a drive unit. Further, guide bar holes 71a and 71b are provided at both ends of the lens holding member 9 holding each lens pair, and guide bars 7a and 71b for preventing rattling when the lens pair moves.
7b engages the guide bar holes 71a, 71b,
The lens holding member 9 is movably held. On the imaging surface behind the convex lens pair 4, the optical axes 1a, 1
an image sensor 5 such as a CCD at each position corresponding to b
a and 5b are provided respectively.

Here, a light beam from an object image (not shown) enters the compound-eye imaging system from the convex lens pair 2 along the optical axes 1a and 1b. The light beam incident along the optical axis 1a sequentially passes through the concave lens pair 3 and the convex lens pair 4 and forms an image on the image sensor 5a. Similarly, a light beam incident along the optical axis 1b forms an image on the image sensor 5b. Image sensor 5
The object images formed on a and 5b are converted by an A / D converter (not shown) which converts an analog signal into a digital signal after light energy is converted into electric energy or a signal (photoelectric conversion). It is converted to a digital image signal. The converted digital image signal is subjected to image synthesis processing by a signal processing circuit or the like (not shown) in an overlapping area of the image formed on the imaging elements 5a and 5b. The taking lens used here is composed of a lens pair formed by integrally molding two lenses having the same radius of curvature and thickness, so that the lens variation during the manufacture and assembly of a compound-eye imaging system lens is reduced. Accordingly, fluctuations in the photographing magnification and the photographing light amount between the lenses of the compound-eye imaging system are reduced. FIG. 2 is a schematic cross-sectional view of a convex lens pair 2 in which two lenses having the same radius of curvature and thickness are integrally formed. In order to minimize the dispersion of the lenses when manufacturing and assembling the lenses of the compound-eye imaging system, the lens pair is more likely to have a curvature as shown in FIG. It is desirable that two lenses having the same radius and thickness be integrally formed by joining the outer peripheral edge of one lens and the outer peripheral edge of the other lens. FIG. 2 illustrates the convex lens pair 2, but the convex lens pair 4 and the concave lens pair 3 are preferably the same as the convex lens pair 2.

In a compound-eye image pickup system having a plurality of image pickup systems, there is a problem of image shift between the image pickup systems due to eccentricity of a lens used in each of the image pickup systems. Hereinafter, an image shift between the imaging lenses due to parallel eccentricity and tilt eccentricity of a lens pair when a compound eye imaging system is configured using a plurality of lens pairs will be described.

FIG. 3A is a state diagram showing the parallel eccentricity of the lens pair of the compound-eye imaging system, and FIG. 3B is a state diagram showing the tilt eccentricity of the lens pair. The configuration of the lens pair of the compound-eye imaging system shown in FIG. 3 is the same as the configuration of the lens pair of FIG. 1, and the parallel eccentricity of the lens pair in (a) is such that the concave lens pair 3 of FIG. Moved
The tilt eccentricity of the lens pair in (b) is such that the concave lens pair 3 of FIG. 1 is tilted by an angle ε about the intersection of the concave lens pair 3 and the central axis 8. As shown in FIG. 3A, when the concave lens pair 3 is decentered in parallel with respect to the center axis 8 of the lens pair by the shift amount δ, the image forming points on the image sensors 5a and 5b shift by the shift amounts y ₁ and y ₂ , respectively. Just move. At this time, the shift amount y ₁ and y ₂ are equal, yet is the same direction in which displacement occurs. Also, as shown in FIG.
When the concave lens pair 3 is tilted and decentered by the angle ε, the imaging points on the imaging elements 5a and 5b are shifted by z ₁ and z ₂ , respectively. At this time, the displacement amounts z ₁ and z ₂ on the imaging surface are different, but the directions in which the displacement of the image occurs are the same. As described above, if a compound-eye imaging system is configured by using a plurality of lens pairs, the deviation of the imaging point on the imaging surface due to the eccentricity of the lens occurs in the same direction. Therefore, the image shift due to the parallel eccentricity and the tilt eccentricity of the lens can be easily corrected by shifting by the amount of the shift in the direction of the shift in the image processing stage. The eccentricity of the lens described above occurs particularly when the lens is moved during zooming or focusing of the compound-eye imaging system. The following describes a zooming mechanism and a focusing mechanism of a compound-eye imaging system that can easily correct an image deviation due to lens eccentricity.

FIGS. 4A and 4B show a compound-eye image pickup system provided with a zooming mechanism and a focusing mechanism according to a second embodiment of the present invention. FIG. 4A is a schematic diagram of the compound-eye image pickup system, and FIG. 4B is a front view of FIG. FIG. 3C is a diagram in which the drive shafts of FIG.

This compound eye image pickup system is obtained by adding a zoom lens drive shaft 14 and a focus lens drive shaft 15 to the compound eye image pickup system of FIG. The zoom lens drive shaft 14 is configured to connect the concave lens pair 3 to the optical axes 1a and 1b.
The shaft penetrates and holds the central portion of the concave lens pair 3 so as to be slidable in a direction perpendicular to the shaft. The focus lens drive shaft 15 holds the convex lens pair 4 through the center of the convex lens pair 4 so that the convex lens pair 4 can slide freely in a direction perpendicular to the optical axes 1a and 1b.

Here, when the zoom lens drive shaft 14 is rotated forward with respect to the screw traveling direction, the concave lens pair 3 is rotated.
Moves to the convex lens pair 4 side, and the magnification of the image captured on the imaging surface becomes larger than before the movement. vice versa,
When the zoom lens drive shaft 14 is rotated in the reverse direction with respect to the screw advancing direction, the concave lens pair 3 moves to the convex lens pair 2 side, and the magnification of the image captured on the imaging surface becomes smaller than before the movement. At this time, the center of the lens pair and the holding portion of the zoom lens drive shaft 14 have a screw-nut relationship, and the zoom lens drive shaft 14
The lens pair is moved by rotating the shaft while fixing one end of the lens pair to the device. Further, since the moving lens pair moves along the guide bars 7a and 7b with the central portion of the lens pair as a driving portion, parallel eccentricity caused by the movement of the lens pair is suppressed by the guide bars 7a and 7b. Therefore, there is only tilt eccentricity with the center of the lens pair as the center of tilt. On the other hand, when the focus lens drive shaft 15 is rotated forward with respect to the screw advancing direction, the convex lens pair 4 moves to the imaging surface side, and when the focus lens drive shaft 15 is rotated in the reverse direction, the convex lens pair 4 moves to the concave lens pair 3 side. By adjusting the movement of the pair 4, the focus of the taking lens can be adjusted. The movement of the lens at this time is the same as the case of the zoom lens drive shaft 14, and the eccentricity of the lens is only the tilt eccentricity with the center of the lens pair as the center of tilt.
The image shift due to the tilt and eccentricity caused by the movement of these lenses occurs in the same direction on the imaging surface as the image shift in FIG. 3B. Therefore, this image deviation is corrected by the same processing as in the case of FIG.

The zoom lens drive shaft 14 and focus lens drive shaft 15 used here
May be arranged vertically as shown in FIG. 4C if it is the center of the lens pair to be moved.

Next, the case where the convergence angle and the base line length of the compound-eye imaging system are changed will be described.

FIG. 5 is a schematic structural view of a compound eye imaging system provided with a reflecting optical system according to a third embodiment of the present invention.

This compound-eye imaging system has a reflection optical system for adjusting the base line length and the convergence angle of the compound-eye imaging system on the subject side of the compound-eye imaging system of FIG. This reflecting optical system includes movable mirrors 10a and 10b and fixed mirror 1
1a and 11b, which are provided on the subject side of the compound-eye imaging system of FIG. 1 independently of the compound-eye imaging system. The movable mirror 10a is provided at a position for reflecting a light beam from a subject by 90 degrees, and the fixed mirror 11a is
90 ° reflects the light beam reflected by
a. The movable mirror 10b and the fixed mirror 11b are provided symmetrically with respect to the movable mirror 10a and the fixed mirror 11a with the central axis 8 as a symmetric axis. In addition, the movable mirrors 10a and 10b
The mirror is movable in the direction in which the light beam from the subject is reflected (base line direction), and is rotatably provided around the center of the mirror.

The luminous flux from the subject is transmitted to the movable mirror 10a,
90b is reflected by 10b, and the fixed mirror 11
a and 11b are reflected by 90 degrees, respectively.
The light enters the convex lens pair 1 along a and 1b. The incident light flux passes through the concave lens pair 3 and the convex lens pair 4, respectively, and forms an image on the imaging devices 5a and 5b. At this time, the convergence angle of the imaging system can be changed by rotating the movable mirrors 10a and 10b to a predetermined angle. For example, when the movable mirror 10a is rotated counterclockwise by the angle θ and the movable mirror 10b is rotated clockwise by the angle θ, the convergence angle can be increased by 2θ, and each mirror is rotated by the angle θ in the opposite direction. Then, 2θ can be reduced. On the other hand, the base length can be changed by moving the movable mirrors 10a and 10b in the base line direction of the imaging system. Here, the movable mirrors 10a, 1
By moving Ob so as to reduce the distance between the base lines in the base line direction, the base line length can be reduced without moving the photographing lens. Conversely, when moving the distances 0b so as to increase the distance between the base lines, the base line length can be increased.

FIG. 6 is a schematic structural view of a compound eye imaging system having a prism system according to a fourth embodiment of the present invention.

This compound-eye imaging system has a prism system on the subject side of the compound-eye imaging system of FIG. In this prism system, wedge-shaped prisms 12a, 13a and 12b each formed of two prisms so as to be a parallel plate are provided.
13b are provided on the optical axes 1a and 1b, respectively. Here, the prisms 12a and 13b are provided rotatably about the optical axis 1a as a central axis. Similarly, the prisms 12b and 13b are also provided rotatably.

The luminous flux from the subject is divided into prisms 12a, 1
3a, and sequentially enters the convex lens pair 2 along the optical axis 1a. The incident light flux sequentially passes through the concave lens pair 3 and the convex lens pair 4 to form an image on the image sensor 5a.
The light beams that have passed through the prisms 12b and 13b also form an image on the image sensor 5b. At this time, the two prisms are arranged so that the same prisms become parallel flat plates.
Therefore, the light beam incident on each prism travels straight without refracting the prism, and a compound-eye imaging system with a zero convergence angle is inevitably obtained. Here, when changing the convergence angle of the compound-eye imaging system, the front prism 12a is rotated clockwise when the device is viewed from the front, and the rear prism 13a is rotated counterclockwise by the angle θ, respectively. When the front prism 12b is rotated counterclockwise and the rear prism 13b is rotated clockwise by an angle θ, the convergence angle 2
The compound eye imaging system of θ is obtained. As described above, by rotating each prism, the convergence angle of the compound-eye imaging system can be changed to a desired angle.

[0034]

As described above, when the compound eye imaging system of the present invention is used, the taking lens is constituted by using a plurality of lens pairs in which two lenses having the same radius of curvature and the same thickness are integrally molded. Therefore, the manufacture and assembly of the lens are performed for each lens pair. Therefore, it is not necessary to separately manufacture the two photographing lenses, and the fluctuation of the photographing light amount and the photographing magnification between the photographing lenses due to the unevenness of the lenses generated at the time of manufacturing and assembling the lenses is reduced.

Further, the image shift due to the parallel eccentricity of the lens pair occurs in the same direction by the same amount on the imaging surface.
It can be easily corrected at the image processing stage.

Further, the tilt and eccentricity of the lens pair caused by the movement of the lens pair during zooming or focusing is determined with reference to the center of the lens pair, since the movement of the lens pair is performed using the central portion of the lens pair as a driving portion. It is caused by the inclination. In addition, since the image deviation due to the tilt eccentricity occurs in the same direction on the imaging surface, it can be easily corrected in the image processing. Further, by providing the guide bar that movably engages the lens pair, parallel eccentricity of the lens pair can be prevented.

The base line length and the convergence angle of the compound-eye imaging system can be changed by providing a reflecting optical system as a base length / convergence angle changing means separately from the photographing lens. If it is rotated, it can be changed easily without moving the taking lens.

[Brief description of the drawings]

FIGS. 1A and 1B are schematic sectional views showing main components of a compound-eye imaging system according to a first embodiment of the present invention, and FIG. 1B is a front view of the compound-eye imaging system;

FIG. 2 is a schematic cross-sectional view of a convex lens pair 2 in which two lenses having the same radius of curvature and thickness are integrally molded.

3A is a diagram illustrating parallel eccentricity of a lens pair of a compound eye imaging system, and FIG. 3B is a diagram illustrating tilt eccentricity of a lens pair.

FIG. 4 is a compound eye imaging system provided with a zooming mechanism and a focusing mechanism according to a second embodiment of the present invention, wherein (a) is a schematic configuration diagram of the compound eye imaging system, (b) is a front view of the compound eye imaging system,
(C) is a view in which the drive shafts of (b) are arranged vertically.

FIG. 5 is a schematic configuration diagram of a compound eye imaging system provided with a reflection optical system according to a third embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of a compound-eye imaging system having a prism system according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1a, 1b Optical axis 2, 4 Convex lens pair 3 Concave lens pair 5a, 5b Image sensor 6 Drive shaft 7a, 7b Guide bar 8 Center axis 9 Lens holding member 10a, 10b Convergence mirror 11a, 11b Fixed mirror 12a, 12b Front prism 13a, 13b Rear prism 14 Zoom lens drive shaft 15 Focus lens drive shaft 61 Shaft holes 71a, 71b Guide bar holes 141a Zoom shaft hole 151b Focus shaft hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-197339 (JP, A) JP-A-50-23632 (JP, A) JP-A-5-289171 (JP, A) JP-A 48-48 58849 (JP, A) Fully open 1979-92138 (JP, U) Fully open Hei 4-98014 (JP, U) Fully open, 60-161314 (JP, U) Fully open, 63-199216 (JP, U) Japanese Utility Model Showa 53-50447 (JP, Y1) Japanese Utility Model Showa 30-13864 (JP, Y1) Japanese Utility Model Showa 29-29378 (JP, Y1) Japanese Utility Model Showa 45-27645 (JP, Y1) (58) (Int.Cl. ⁷ , DB name) G03B 35/08 H04N 13/00 G02B 21/20 G02B 7/02-7/105 G02B 7/12-7/16

Claims (4)

(57) [Claims] [Claim 1] An wall thickness and radius of curvature of the lens is the same
A compound-eye imaging system in which a plurality of lens pairs formed as a single unit by holding a pair of lenses by a holding member is used to form a photographing lens, and an image is formed on each of a pair of image sensors , Between a pair of constituent lenses
A lens pair moving means for moving a part or all of the plurality of lens pairs with the provided drive shaft ; and a focus for controlling the lens pair moving means to move a specific lens pair to adjust the focus of the photographing lens. Matching means, imaging magnification changing means for controlling the lens pair moving means to move a specific lens pair to change the imaging magnification of the photographing lens, and at both ends of the holding member sandwiching the drive shaft.
By providing a guide portion provided and engaging with the guide portion.
Guide bar that movably holds a specific lens pair
And a lens pair moving and holding means constituted by: 2. A convergence angle / base line variable means for changing at least one or both of a convergence angle and a base line length of the compound-eye imaging system is provided on a subject side of the photographing lens. 2. The compound eye imaging system according to 1. 3. The convergence angle / base line length varying means is a reflection optical system having a fixed mirror and a movable / rotatable reflection mirror provided corresponding to each optical axis of the photographing lens. Item 3. The compound eye imaging system according to Item 2. 4. An edge of one lens and an edge of the other lens are integrally molded so that the optical axes of a pair of lenses constituting the lens pair are parallel to the same direction. 3. The compound eye imaging system according to claim 1, wherein