JPH08304943A - Stereoscopic photographing device - Google Patents

Abstract

PURPOSE: To reduce the number of component members, to simplify a mechanism, to reduce production cost and to miniaturize the device by integrally holding a pair of moving lenses for a left eye and a right eye by an integrated frame. CONSTITUTION: 1st group lenses 1L and 1R are respectively fixed and arranged on a front side fixed frame 7. The 2nd group lenses 2L and 2R and 3rd group lenses 3L and 3R are the moving lenses respectively moving by a specified amount in the case of changing magnification. The 2nd group lenses 2L and 2R are integrally held by a 2nd group holding frame 21 being the integrated frame, and the 3rd group lenses 3L and 3R are integrally held by a 3rd group holding frame 31 being the integrated frame. The 2nd group holding frame 21 and the 3rd group holding frame 31 are supported to be freely moved in the optical axis direction of left and right photographing optical systems by shafts 81 and 82 being two shaft members constituting a designation mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic photographing device, and more particularly to a stereoscopic photographing device for obtaining a stereoscopic image by utilizing binocular parallax.

[0002]

2. Description of the Related Art In recent years, in order to obtain a stereoscopic image, two photographing optical systems of a photographing device are arranged side by side, and the images photographed by the respective photographing devices are independently reproduced for the left and right eyes. A stereoscopic image capturing apparatus and a stereoscopic image reproducing apparatus that obtain a stereoscopic image by utilizing so-called binocular parallax are disclosed in, for example, Japanese Patent Laid-Open No.
Various proposals have been made according to Japanese Patent Application Laid-Open No. 4-11254, Japanese Patent Application Laid-Open No. 63-153987, and the like.

The stereoscopic image reproducing device reproduces the left and right independent images obtained by the stereoscopic photographing device independently for the left and right eyes to observe (appreciate) the stereoscopic image. Which, for example,
Head Mounted D
isplay; called HMD. ) Or a liquid crystal shutter eyeglass type reproducing apparatus, a polarized eyeglass type reproducing apparatus, and the like.

In the stereoscopic image pickup device disclosed in Japanese Patent Laid-Open No. 64-11254, two image pickup devices are arranged side by side, and when the image pickup is performed by this, the image pickup optics of the two image pickup devices are taken. The angle formed by the optical axis intersections of the system is changed. At this time, the photographing optical systems of the two photographing devices are simultaneously and evenly rotated to obtain a better stereoscopic image.

Further, the optical device for photographing a stereoscopic image disclosed in the above-mentioned Japanese Patent Laid-Open No. 63-153987,
The optical blocks for left-eye information photographing and right-eye information photographing are respectively provided, and one of these two optical blocks is fixed toward the subject by a predetermined angle inward, and the other optical block is fixed. By operating a drive mechanism, the optical block is rotated according to the distance of the subject.

Since the movement at this time is very close to the movement of the human eye, when observing (appreciating) a stereoscopic image obtained by this, the feeling of eye fatigue of the observer is appreciated. It is possible to reduce the occurrence of

[0007]

However, according to the means disclosed in Japanese Patent Laid-Open No. 64-11254, the optical axis of the photographing optical system is rotated, so that the space efficiency is deteriorated. At the same time, there is a problem that the device itself becomes large.

According to the means disclosed in Japanese Patent Laid-Open No. 63-153987, there is one optic for each of the left eye information photographing and the right eye information photographing in order to obtain a stereoscopic image. Since components such as blocks are required,
There are problems that the number of members constituting the device increases and the mechanism becomes complicated. Further, there is a problem that the increase in the number of constituent members increases the manufacturing cost and also becomes a restriction when the device itself is designed to be downsized.

An object of the present invention is to solve the above-mentioned conventional problems and reduce the number of components constituting the apparatus in a stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, thereby reducing the manufacturing cost. It is intended to provide a stereoscopic photographing device which can contribute to the reduction of the size and the size of the device and can obtain a better stereoscopic image.

[0010]

A stereoscopic photographing apparatus according to the present invention is a stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, and includes a pair of moving lenses for a left eye and a right eye. An integral frame that holds the integral frame and a support mechanism that is disposed between the moving lenses for the left eye and the right eye and that supports the integral frame so as to be movable in the optical axis direction of the pair of moving lenses. The support mechanism is composed of two shaft members arranged in the horizontal direction, and a drive mechanism for driving the integral frame is provided between the two shaft members. .

Further, it is characterized in that it is provided with a cam for moving the integrated frame and a drive mechanism which is arranged between the moving lenses for the left eye and the right eye and drives the cam.

In a stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, an integral frame integrally holding a pair of moving lenses for the left eye and the right eye, and the left eye A support mechanism that is arranged between the moving lenses for the right eye and supports the integrated frame so as to be movable in the optical axis direction of the pair of moving lenses, and is incident on the moving lenses for the left eye and the right eye, respectively. An integrated aperture mechanism for simultaneously adjusting the light amount by a single drive means is provided, and an interference preventing cutout portion for preventing interference of the drive means for driving the integrated aperture mechanism is arranged in the integrated frame. It is characterized by

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are diagrams showing a stereoscopic photographing apparatus according to a first embodiment of the present invention, FIG. 1 is a diagram showing an internal structure of the stereoscopic photographing apparatus when viewed from the upper side, and FIG. 3 is a front view of the stereoscopic photographing apparatus, FIG. 3 is a rear view of the stereoscopic photographing apparatus, and FIG. 4 is an exploded perspective view showing a main mechanical portion of the stereoscopic photographing apparatus. 2 and 3
In order to avoid complication of the drawing, only the internal structure is shown, and members such as a housing covering the internal structure are omitted.

As shown in FIGS. 1 to 4, the stereoscopic photographing apparatus according to the first embodiment has a left eye in a housing formed by a main fixed frame 11, a front fixed frame 7 and a rear fixed frame 9. And a photographic optical system for the right eye are provided respectively.

The photographing optical systems for the left eye and the right eye are composed of first group lenses 1L and 1R, second group lens 2L which is a moving lens,
2R and 3 group lenses 3L and 3R, aperture openings 4L and 4
An integral diaphragm mechanism 4 forming R, filters 5L and 5R including a low-pass filter, an infrared cut filter, and the like,
It is composed of image pickup devices 6L and 6R, which are CCDs and the like.

The first group lenses 1L and 1R are fixedly arranged on the front side fixed frame 7, respectively. Also, the above 2
Group lenses 2L and 2R and the above-mentioned third group lenses 3L and 3R
Is a moving lens that moves by a predetermined amount when the magnification is changed, and is the second group lens 2
L and 2R are integrally held by a second group holding frame 21 which is an integral frame, and the third group lenses 3L and 3R are also integrally held by a third group holding frame 31 which is also an integral frame. There is. Incidentally, the second and third group holding frames 21, 31
Are formed to have a vertically symmetrical shape.

Further, the second group holding frame 21 and the third group holding frame 31 are arranged in the optical axis direction of the left and right photographing optical systems by shafts 81 and 82 which are two shaft members constituting a support mechanism. It is supported so that it can move freely.

Now, the second group holding frame 21 and the third group holding frame 31 which are integral frames will be described. As shown in FIG. 2 or 4, in the second group holding frame 21, as described above,
The second group lenses 2L and 2R are held at both ends thereof, and a sleeve 22 and a U-shaped groove 23 are arranged between the second group lenses 2L and 2R. The shaft 81 is inserted into the sleeve 22, and the shaft 82 is inserted into the U-shaped groove 23.

Similarly, in the third group holding frame 31,
As described above, the third group lenses 3L and 3R are held at both ends thereof, and as shown in FIG. 3 or 4, the sleeve 32 and the U-shaped groove are provided between the third group lenses 3L and 3R. 33 are provided. The shaft 81 is inserted in the sleeve 32, and the shaft 8 is inserted in the U-shaped groove 33.
2 is to be inserted.

The shafts 81 and 82 are composed of the pair of left and right moving lenses, that is, the second group lenses 2L and 2R.
Or between the third group lenses 3L and 3R, each of which is arranged in the vertical direction, one end of which is supported by the recesses 71 and 72 of the front side fixed frame 7, and the other end of which is The recesses 91 and 92 of the rear fixed frame 9
Supported by.

On the other hand, the filters 5L and 5R and the image pickup devices 6L and 6R are incorporated into holders 10L and 10R, respectively, as shown in FIG. 7, and the holders 10L and 10R are arranged on the rear side. It is arranged on the fixed frame 9.

On the other hand, the integral diaphragm mechanism 4 adjusts the amount of light incident on each of the pair of left-eye and right-eye moving lenses by a single drive means, for example, a drive motor 43 such as a galvanometer motor. This is done simultaneously, and is fixed to the main fixing frame 11.

Here, the integral diaphragm mechanism 4 will be briefly described. 5 and 6 are diagrams showing a schematic configuration of the integrated diaphragm mechanism 4, FIG. 5 showing the minimum diaphragm, and FIG. 6 showing the maximum diaphragm (open diaphragm).

As shown in FIGS. 5 and 6, the integrated diaphragm mechanism 4 is formed by a pair of left and right diaphragm blades 41 and 42, a single drive motor 43, and the like.
3 is disposed on the rear surface side of the integrated diaphragm mechanism 4.

Then, the rotational movement of the drive motor 43 is transmitted to the pair of left and right diaphragm blades 41 and 42 via, for example, a link mechanism, and the pair of left and right diaphragm blades 41 and 4 is transmitted.
2 is made to slide.

At this time, the pair of left and right diaphragm blades 41,
By increasing or decreasing the aperture areas of the aperture openings 4L and 4R formed by 42, the amount of light incident on each of the pair of left-eye and right-eye moving lenses is adjusted. The left and right diaphragm blades 41, 4 are
The shafts 81 and 82 that form the support mechanism and the second group holding frame 2 are provided at substantially the center of the longitudinal end of the second group 2.
Notches 41a and 42a are provided to prevent interference with the first sleeve 22, U-shaped groove 23, and the like.

As shown in FIGS. 3 and 4, the third group holding frame 31 prevents interference between the third group holding frame 31 and the driving motor 43 at a position facing the driving motor 43. An interference preventing cutout 34 is provided.

On the other hand, on the bottom surface of the main fixed frame 11, a cam 12 having a plate shape for moving the second group holding frame 21 and the third group holding frame 31 by a predetermined amount within a predetermined range.
Is rotatably arranged.

On the surface of the cam 12, cam grooves 122 and 123 are provided on the upper surface side thereof, and a gear portion is formed on the outer peripheral portion of the cam 12.

In the vicinity of the cam 12, a cam drive motor 13 which is a drive mechanism for driving the cam 12 is provided.
The driving force of the cam drive motor 13 is generated by the pinion gear 131 fixedly arranged on the main fixed frame 11 and pivotally supported by the rotation shaft thereof and the gear portion of the cam 12 meshing with each other. It is adapted to be transmitted to the cam 12.

On the other hand, the sleeves 22 and 32 of the second-group and third-group holding frames 21 and 31 are provided on the side facing the cam 12.
That is, the cam followers 25, 35 are directed downwards.
Are arranged respectively, and the cam followers 25, 3 are provided.
5 engages with the cam grooves 122 and 123 of the cam 12, respectively.

As a result, the driving force of the cam drive motor 13 is transmitted through the cam 12 to the second and third group holding frames 2
1, 1 and 31 are moved by a predetermined amount.

A low-magnification pan-focus type lens is used for the pair of left and right lenses used in the pair of left-eye and right-eye photographing optical systems.

By the way, in the stereoscopic photographing apparatus of the first embodiment, the optical axes of the photographing optical systems for the left eye and the right eye are fixed, so that the photographing optical system of the photographing optical system is fixed during the photographing operation. The optical axes do not intersect. Therefore, the stereoscopic image when reproducing the left and right image information obtained by this, and the vergence angle of the eye when the observer sees directly with the naked eye do not match, so that a good stereoscopic image is obtained as it is. It will not be possible.

Therefore, in the stereoscopic photographing apparatus of the first embodiment, by performing image processing such as changing the cutout areas of the image pickup devices 6L and 6R, the stereoscopic image at the time of reproduction is directly visible to the naked eye. A better stereoscopic image is obtained by matching the image when viewed.
As a means for performing such image processing, the same means as that which the applicant of the present invention has previously applied in Japanese Patent Application No. 7-11973 can be applied.

The operation of the stereoscopic image pickup apparatus of the first embodiment having the above-mentioned structure will be described below. First, for example, when a command for performing a zooming operation is given from an operation unit or the like (not shown) provided on the exterior part of the stereoscopic photographing apparatus, a control unit (not shown) for controlling the entire stereoscopic photographing apparatus. From the above), the cam drive motor 13
A drive command is output to.

When the zooming operation command zooms from the wide-angle side to the telephoto side, the cam drive motor 13 is rotated clockwise in FIG. Then, the cam 12 is rotated counterclockwise by the pinion gear 131. When the cam 12 rotates counterclockwise, the cam follower 25 of the second group holding frame 21 and the cam follower 25
The cam follower 35 of the group holding frame 31 means the cam groove 12
Move along 2,123. Along with this, the second and third holding frames 21 and 31 are connected to the shafts 81 and 82.
Will be moved along.

At this time, the second group holding frame 21 moves to the rear fixed frame 9 side, and the third group holding frame 31 moves to the second group holding frame 31.
It moves to the group holding frame 21 side.

When the zooming operation command zooms from the telephoto side to the wide angle side, the cam drive motor 13 is rotated counterclockwise in FIG. 1, and the cam 12 is moved by the pinion gear 131. It is rotated clockwise. Then, the cam follower 25 of the second group holding frame 21 is rotated by the clockwise rotation of the cam 12.
Then, the cam follower 35 of the third group holding frame 31 similarly moves along the shafts 81 and 82. At this time, the second group holding frame 21 moves to the front side fixed frame 7 side, and the third group holding frame 31 moves to the rear side fixed frame 9 side.

By the way, in general, when a zooming operation is performed, when the zoom lens is moved to the wide-angle side and then the zoom reversal operation is performed such as switching to the telephoto side, the movement is performed. Shaking may occur on the optical axis of the lens.

The magnitude of the optical axis swing of the moving lens is
The larger the load applied to the U-shaped grooves 23, 33 of the integral frame for holding the movable lens, that is, the second-group and third-group holding frames 21, 31, is, the larger the load tends to be.

8 and 9 are views showing the state of the movable lens at the time of the above-mentioned zoom reversal operation. FIG. 8 shows the state when the second group holding frame 21 is moved from the telephoto side to the wide angle side. 9 illustrates an example of a state in which the second group holding frame 21 moves from the wide-angle side to the telephoto side.

As shown in FIGS. 8 and 9, for example, the above 2
When the group holding frame 21 is moved from the telephoto side to the wide-angle side, the sleeve 22 side of the second group holding frame 21 is moved first and the U-shaped groove 23 side is moved with a delay. The second lens group 2L, 2R, which is a movable lens held by the second lens group holding frame 21, causes a shake about its optical axis.

8 and 9, only the second group holding frame 21 is illustrated and described, but the same applies to the third group holding frame 31. Further, in the above description, the movement from the telephoto side to the wide-angle side has been described as an example, but the same operation is performed in the opposite case, that is, in the case of moving from the wide-angle side to the telephoto side. It is done.

As described above, the zoom inversion operation causes
The second group lens 2L, 2R and the third group lens 3L, 3
Since there is a possibility that the position of R in the optical axis direction will be different, defocus will occur in the image information formed.

Therefore, in the three-dimensional image pickup apparatus of the first embodiment, the shafts 81 and 82, which constitute the support mechanism for supporting the second and third group holding frames 21 and 31, are arranged vertically. As a result, the load on the U-shaped grooves 23 and 33 is reduced, so that the swing in the optical axis direction is reduced.

As described above, according to the first embodiment, the pair of moving lenses for the left eye and the right eye, that is, the second lens group 2L, 2R and the third lens group 3L, 3R are provided. Each lens frame to be held, that is, the second and third holding frames 2
1, 31 are formed as an integral frame, whereby the pair of left and right moving lenses are integrally held, which can contribute to a reduction in the number of constituent members, and the integral frame can be moved in a pair. Since the support mechanism for movably supporting the lens in the optical axis direction is arranged between the pair of left and right moving lenses to improve space efficiency, the manufacturing cost is reduced and the device is downsized. Can contribute to.

The second holding frame 21 and the third holding frame 3 are also provided.
1, that is, the pair of left and right moving lenses is the cam 1
2 are simultaneously moved by using the rotational force of a single cam drive motor 13, and the mechanisms such as the cam 12 and the cam drive motor 13 are arranged between the pair of left and right moving lenses. By doing so, it is possible to contribute to the reduction of the constituent members of the device, the simplification of the mechanism itself, the reduction of the manufacturing cost, and the downsizing of the device.

By arranging the shafts 81 and 82, which are the two shaft members constituting the support mechanism, in the vertical direction, the load on the U-shaped grooves 23 and 33 is reduced,
It is possible to reduce shaking in the optical axis direction caused by the U-shaped grooves 23 and 33 at the time of zoom reversal, and obtain a better stereoscopic image.

Further, the adjustment of the amount of light incident on each of the pair of left and right moving lenses adopts the integrated diaphragm mechanism 4 which is simultaneously performed by a single driving means, and the single drive for driving the integrated diaphragm mechanism 4 is adopted. Drive motor 4 as means
By providing the interference-preventing cutout 34 for preventing the interference of No. 3, the space inside the stereoscopic imaging device can be effectively utilized. This can contribute to downsizing of the device.

Further, by making the second and third holding frames 21 and 31 which are the above-mentioned integral frames each have a vertically symmetrical shape, the manufacturing becomes easier, which can contribute to the improvement of the parts accuracy.

Next, a stereoscopic photographing apparatus according to the second embodiment of the present invention will be described. 10 to 13 are diagrams showing a stereoscopic photographing apparatus according to a second embodiment of the present invention, and FIG. 10 is a diagram showing an internal structure of the stereoscopic photographing apparatus when viewed from the upper side,
FIG. 11 shows a front view of the stereoscopic photographing apparatus, and FIG. 12 shows a rear view of the stereoscopic photographing apparatus. Note that, in FIGS. 11 and 12, only the internal structure is shown in order to avoid complication of the drawings. A member such as a case for covering the same is omitted in the drawing. Further, FIG. 13 is an exploded perspective view showing a main mechanical portion of the stereoscopic photographing apparatus. Since the second embodiment basically has the same configuration as that of the above-mentioned first embodiment, the same members are designated by the same reference numerals, and detailed description thereof will be omitted. Only the points that are omitted and different will be described below.

As shown in FIGS. 10 to 13, the stereoscopic photographing apparatus of the second embodiment is similar to the stereoscopic photographing apparatus of the first embodiment described above in that the main fixed frame 11A, the front fixed frame 7A and the rear fixed frame 7A. In the housing formed by the side fixing frame 9A, left-eye and right-eye taking optical systems are respectively arranged.

Then, the second group holding frames 21A and the third group which are an integral frame for integrally holding the pair of moving lenses for the left eye and the right eye (second group lenses 2L, 2R, third group lenses 3L, 3R) The holding frame 31A and the pair of left and right movements by the shafts 83 and 84, which are two shaft members that constitute a support mechanism arranged on the lower side between the moving lenses for the left eye and the right eye. It is movably supported in the optical axis direction of the lens.

The shafts 83 and 84, which are the two shaft members constituting the support mechanism, are arranged in the horizontal direction, and one end of each of the shafts 83 and 84 has a recess 73 in the front fixed frame 7A. Supported by 74,
The other end is supported by the recesses 93 and 94 of the rear fixed frame 9A.

As shown in FIGS. 11 and 13, the second group holding frame 21A holding the second group lenses 2L and 2R at both ends is provided with a sleeve 22a and a long hole 23a at its lower side. And the sleeve 22a has the shaft 83
Is inserted, and the long hole 23a is inserted.
The shaft 84 is inserted into the shaft.

Similarly, the third group holding frame 31 for holding the third group lenses 3L and 3R at both ends has the same structure as shown in FIGS.
As shown in FIG. 3, the sleeve 32a and the long hole 3 are provided on the lower side thereof.
3a is provided, the shaft 83 is inserted into the sleeve 32a, and the shaft 84 is inserted into the elongated hole 33a.

Further, the sleeve 22 of the second group holding frame 21
The cam follower 2 is provided at a substantially central portion between the a and the long hole 23a.
5a is provided, and a cam follower 35a is provided at a substantially central portion between the sleeve 32a of the third group holding frame 31 and the elongated hole 33a.

On the other hand, the cam 14 having a cylindrical shape for moving the second group holding frame 21 and the third group holding frame 31 by a predetermined amount within a predetermined range includes the shafts 83 and 8.
It is arranged between four. One end of the cam 14 is supported on the lower end of the substantially central portion of the front fixed frame 7A, and the other end is supported on the lower end of the substantially central portion of the rear fixed frame 9A. The positioning is done.

Here, the cam 14 will be briefly described. FIG. 14 is a perspective view showing a schematic configuration of the cam 14 and a drive mechanism for driving the cam 14. As described above, the cam 14 is arranged between the shafts 83 and 84, and the drive mechanism 15 for driving the cam 14 is arranged in the vicinity thereof.

The cam 14 has two cam grooves 142,
A cam follower 25a of the second group holding frame 21A is provided in the cam groove 142, and a cam follower 35a of the third group holding frame 31A is provided in the cam groove 143.
a is engaged. A gear 14a is coaxially supported on one end of the cam 14 coaxially therewith.

On the other hand, the drive mechanism 1 for driving the cam 14
Reference numeral 5 denotes a cam drive motor 151, a speed reduction mechanism section 152, a final gear 153, and the like in the housing, and is fixed to the bottom surface side of the main fixing frame 11. The deceleration mechanism section 152 includes the drive mechanism 15
In the casing of FIG. 14, the gear train is configured to reduce the rotational driving force of the cam drive motor 151 and transmit it to the final gear 153. Illustration is omitted.

Then, the final gear 15 of the drive mechanism 15
3 meshes with the gear 14a of the cam 14, whereby the rotational driving force of the cam drive motor 151 is transmitted via the cam 14 to the second and third holding frames 21A and 31A.
Is being transmitted to.

The operation of the stereoscopic image pickup apparatus of the second embodiment having the above-described structure will be described below. First, for example, when a command for performing a zooming operation is given from the operation unit or the like, the cam drive motor 151 of the drive mechanism 15 is driven by the control means (not shown) that controls the entire stereoscopic imaging apparatus. The command is output.

Here, when the zooming operation command is a command for zooming from the wide-angle side to the telephoto side, the rotational driving force of the cam drive motor 151 is equal to the speed reduction mechanism 1.
The gear 14 a of the cam 14 that is transmitted to the final gear 153 via 52 and meshes with the final gear 153,
In FIG. 11, it is rotated counterclockwise.

Then, since the cam 14 is also rotated in the same direction, the cam follower 25a of the second group holding frame 21A and the cam follower 35a of the third group holding frame 31A are placed in the cam grooves 142, 143. Move along. Along with this, the second and third holding frames 21A,
The 31A moves along the shafts 83 and 84. At this time, the second group holding frame 21A moves to the rear side fixed frame 9A side, and the third group holding frame 31A moves to the second group holding frame 21A side.

When the zooming operation command zooms from the telephoto side to the wide-angle side, the rotational driving force of the cam driving motor 151 is the same as that of the gear 14a of the cam 14 in the clockwise direction in FIG. Rotate. Then, the cam 14 is also rotated in the same direction, and the second group and the third group
Cam followers 25a and 35a of the group holding frames 21A and 31A
Moves along the cam grooves 142, 143, and accordingly, the second and third holding frames 21A, 31A move along the shafts 83, 84. At this time, the second group holding frame 21A moves to the front side fixed frame 7A side, and the third group holding frame 31A moves to the rear side fixed frame 9A.
Move to the side.

By the way, in general, when the zooming operation is performed, the moving lens is moved when the zoom reversing operation is performed, such as when the moving lens is moved to the wide-angle side and then switched to the movement to the telephoto side. Shakes in the direction of eccentricity of the optical axis. The magnitude of the optical axis swing of the moving lens at this time tends to increase as the rotational moment applied to the integral frame holding the moving lens, that is, the second-group and third-group holding frames 21A and 31A increases. It is in.

Here, in a general photographing device or the like,
As shown in FIG. 16, since the two shaft members 81X and 82X that support the holding frame 21X that holds the moving lens 2X are arranged in the vertical direction, the fluctuation of the optical axis of the moving lens 2X is caused by the above-mentioned holding frame. 21X Upper shaft member 82X supporting 21X
And the U-shaped groove 23X into which this is inserted will occur within a marginal area (play or the like).

Therefore, in the second embodiment, the shafts 83, 84 are arranged in the horizontal direction, and the cam followers 25a, 35a are arranged substantially in the center between the shafts 83, 84. During the zoom reversing operation, the force from the surface of the cam 14 is applied to the second-group and third-group holding frame 21 via the cam followers 25a and 35a.
It acts on A and 31A, and it is possible to suppress the generation of a rotation moment about the sleeves 22a and 32a as rotation axes.
Therefore, image shake is prevented. Note that FIG.
In the figure, only the second holding frame 21A is shown, but the same applies to the third holding frame 31A.

As described above, according to the second embodiment, the same effect as that of the first embodiment can be obtained, and at the same time, the shafts 83, which are the two shaft members constituting the support mechanism, By arranging 84 in the horizontal direction, it is possible to reduce the shaking in the optical axis eccentric direction caused by the rotation moment received from the cam drive motor 15 of the drive mechanism 15 at the time of reversing the zoom.

[Additional Remarks] The invention having the following constitution can be obtained from the above embodiment.

(1) In a stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, an integral frame integrally holding a pair of moving lenses for the left eye and the right eye, and the left eye And a support mechanism that is disposed between the moving lens for the right eye and supports the integrated frame so as to be movable in the optical axis direction of the pair of moving lenses.

According to Supplementary Note 1, since the pair of moving lenses for the left eye and the right eye are integrally held by the integral frame, it is possible to contribute to the reduction of the number of constituent members and the mechanism. This can contribute to simplification, and further contribute to reduction of manufacturing cost and downsizing of the device.

Further, the supporting mechanism for movably supporting the integral frame in the optical axis direction of the pair of movable lenses is arranged between the pair of movable lenses for the left eye and the right eye. In addition, it is possible to improve the space efficiency, contribute to the reduction of the manufacturing cost and the downsizing of the device.

(2) The stereoscopic photographing apparatus according to attachment 1, wherein the supporting mechanism is composed of two shaft members arranged in the vertical direction.

According to Supplementary Note 2, by arranging the two shaft members constituting the support mechanism in the vertical direction, it is possible to reduce the shaking in the optical axis direction that occurs during zoom reversal or the like, and to obtain a better stereoscopic image. You can get a video.

(3) The stereoscopic photographing apparatus according to attachment 1, wherein the integral frame has a vertically symmetrical shape.

According to Supplementary Note 3, since the integral frame has the vertically symmetrical shape, the manufacturing becomes easier, which contributes to the improvement of the component accuracy.

(4) In a stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, an integral frame for integrally holding a pair of moving lenses for the left eye and the right eye, and the above-mentioned left eye And a moving mechanism for the right eye, and a supporting mechanism for movably supporting the integral frame in the optical axis direction of the pair of moving lenses, and incident on the moving lenses for the left eye and the right eye, respectively. An integrated aperture mechanism for simultaneously adjusting the light amount by a single drive means, and an interference prevention notch for preventing interference of the drive means for driving the integrated aperture mechanism is provided in the integrated frame. A stereoscopic imaging device.

According to Supplementary Note 4, the amount of light incident on each of the pair of left-eye and right-eye moving lenses is adjusted simultaneously by a single driving means by an integral diaphragm mechanism to drive the integral diaphragm mechanism. Since the interference preventing cutout portion for preventing the interference of the single driving means is provided, it contributes to the simplification of the mechanism, and the space inside the stereoscopic imaging apparatus can be effectively utilized. It can contribute to miniaturization.

(5) In the stereoscopic photographing apparatus described in appendix 4, at least one cutout portion for preventing interference of the integral frame or the support mechanism is provided in the diaphragm blades constituting the integral diaphragm mechanism. The stereoscopic imaging device.

According to Appendix 5, the aperture blades forming the integral aperture mechanism are provided with notches for preventing interference with the integral frame or the support mechanism, which contributes to effective use of the space inside the apparatus. This can contribute to downsizing of the device.

[0084]

As described above, according to the invention described in claim 1, since the pair of moving lenses for the left eye and the right eye are integrally held by the integral frame, the number of constituent members is increased. Can contribute to the reduction of the manufacturing cost, contribute to the simplification of the mechanism, and further contribute to the reduction of the manufacturing cost and the downsizing of the device. .

Further, the supporting mechanism for movably supporting the integral frame in the optical axis direction of the pair of movable lenses is arranged between the pair of movable lenses for the left eye and the right eye. In addition, it is possible to improve the space efficiency, contribute to the reduction of the manufacturing cost and the downsizing of the device.

According to the second aspect of the present invention, by arranging the two shaft members constituting the support mechanism in the horizontal direction, it is possible to reduce the sway in the direction of eccentricity of the optical axis that occurs during zoom reversal. , A better stereoscopic image can be obtained.

According to the third aspect of the present invention, a cam for moving the two integrated frames is provided, and the cam is driven by a single drive mechanism, thereby simplifying the mechanism for performing the zooming operation. In addition, the manufacturing cost can be reduced and the device can be miniaturized by reducing the number of constituent members.

Further, since the cam and the drive mechanism for driving the cam are arranged between the moving lenses for the left eye and the right eye, the space inside the apparatus can be effectively used, and the apparatus can be effectively used. It can contribute to miniaturization.

According to the invention described in claim 4, the amount of light incident on each of the pair of moving lenses for the left eye and the right eye is adjusted simultaneously by a single driving means by an integral diaphragm mechanism. Since the interference preventing cutout portion for preventing the interference of the single driving means for driving the integral diaphragm mechanism is provided, the space inside the stereoscopic photographing apparatus can be effectively utilized. Therefore, it is possible to contribute to downsizing of the device.

As described above, according to the present invention, in the stereoscopic photographing apparatus for obtaining the stereoscopic image by utilizing the binocular parallax, the number of constituent members constituting the apparatus is reduced, the manufacturing cost is reduced and the apparatus is reduced. It is possible to provide a stereoscopic imaging device that contributes to downsizing and can obtain better stereoscopic images.

[Brief description of drawings]

FIG. 1 is a diagram showing a stereoscopic photographing apparatus according to a first embodiment of the present invention, which is a diagram showing an internal structure of the stereoscopic photographing apparatus when viewed from the upper surface side.

FIG. 2 is a front view of the stereoscopic photographing apparatus shown in FIG.

FIG. 3 is a rear view of the stereoscopic photographing apparatus of FIG.

FIG. 4 is an exploded perspective view showing a main mechanical portion of the stereoscopic imaging apparatus shown in FIG.

5 is a diagram showing a schematic configuration of an integral aperture mechanism of the stereoscopic imaging apparatus of FIG. 1, showing a minimum aperture state.

FIG. 6 is a diagram showing a schematic configuration of an integrated aperture mechanism of the stereoscopic image capturing apparatus of FIG. 1, showing a maximum aperture (at full aperture).

7 is a diagram showing a configuration of a rear side fixed frame of the stereoscopic image capturing apparatus of FIG.

8 is a diagram showing a state of a moving lens at the time of zoom reversing operation in the stereoscopic imaging apparatus of FIG. 1, showing a state of moving the second group holding frame from the telephoto side to the wide-angle side. FIG.

FIG. 9 is a diagram showing a state of a moving lens at the time of zoom reversal operation in the stereoscopic imaging apparatus of FIG. 1, showing a state when moving from a wide-angle side to a telephoto side of an integrated frame.

FIG. 10 is a diagram showing a stereoscopic photographing apparatus according to a second embodiment of the present invention, and is a diagram showing an internal structure of the stereoscopic photographing apparatus when viewed from the upper surface side.

FIG. 11 is a front view of the stereoscopic photographing apparatus of FIG.

FIG. 12 is a rear view of the stereoscopic photographing apparatus of FIG.

FIG. 13 is an exploded perspective view showing a main mechanical portion of the stereoscopic photographing apparatus of FIG.

14 is a perspective view showing a schematic configuration of a cam and its drive mechanism of the stereoscopic imaging apparatus of FIG.

FIG. 15 is a diagram showing a state of the moving lens during zoom inversion operation in the stereoscopic imaging apparatus of FIG.

FIG. 16 is a diagram showing a state of a moving lens during zoom inversion operation in a general image pickup apparatus.

[Explanation of symbols]

 1L, 1R ... 1-group lens 2L, 2R ... 2-group lens (moving lens) 3L, 3R ... 3-group lens (moving lens) 4 ... Integrated diaphragm mechanism 5L, 5R ... Filter 6L, 6R ... Imaging Element 7, 7A ...... Front fixed frame 9, 9A ...... Rear fixed frame 11, 11A ...... Main fixed frame 12, 14 ...... Cam 13 ...... Cam drive motor 15 ...... Cam drive mechanism 21, 21A ...... 2 Holding frame (integral frame) 31, 31A ... Third holding frame (integral frame) 81, 82, 83, 84 ... Shaft (shaft member)

Claims (4)

[Claims] 1. A stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, an integral frame integrally holding a pair of moving lenses for the left eye and the right eye, and the left eye. A stereoscopic photographing apparatus comprising: a support mechanism that is disposed between moving lenses for the right eye and that supports the integrated frame so as to be movable in the optical axis direction of the pair of moving lenses. 2. The support mechanism is a horizontal arrangement 2
The three-dimensional imaging apparatus according to claim 1, wherein the stereoscopic imaging device is composed of two shaft members, and a drive mechanism that drives the integrated frame is provided between the two shaft members. 3. A cam for moving an integral frame, and a drive mechanism which is arranged between the moving lenses for the left eye and the right eye and drives the cam. Alternatively, the stereoscopic imaging device according to claim 2. 4. A stereoscopic photographing apparatus for obtaining a stereoscopic image by utilizing binocular parallax, an integral frame integrally holding a pair of moving lenses for the left eye and the right eye, and the left eye. A support mechanism that is arranged between the moving lenses for the right eye and supports the integrated frame so as to be movable in the optical axis direction of the pair of moving lenses, and is incident on the moving lenses for the left eye and the right eye, respectively. An integrated aperture mechanism that simultaneously adjusts the light amount by a single drive means is provided, and an interference prevention cutout portion that prevents interference of the drive means that drives the integrated aperture mechanism is provided in the integrated frame. A stereoscopic imaging device characterized by the above.