JPH11146424A - Stereoscopic image photographing device and optical adapter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stereoscopic image photographing device capable of obtaining an excellent three-dimensional effect even in zoom photographing and to provide an optical adapter device used therefor. SOLUTION: This optical adapter device 130 attachable and detachable to/ from the optical system of the photographing device and capable of obtaining a pair of images having prescribed parallax is provided with a pair of first mirrors 135a and 135b arranged oppositely with a prescribed distance between centers at a prescribed inclination angle in mutually opposite directions, a pair of second mirrors 136a and 136b for reflecting reflected light from the first mirrors 135a and 135b and making it be incident on the optical system and an inclination angle adjustment means 140 for adjusting the inclination angle of at least one 135a of the first mirrors 135a and 135b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image photographing apparatus capable of photographing a three-dimensional image and an optical adapter device used for the apparatus.

[0002]

2. Description of the Related Art As a conventional three-dimensional image photographing apparatus, there is known an apparatus for photographing images for a right eye and a left eye on a right half and a left half of a screen by an optical method, for example. An image in such a stereoscopic image photographing apparatus is photographed so as to have a parallax that can exhibit the stereoscopic visual effect most. That is, the image is taken such that the center-to-center distance between the right-eye image and the left-eye image is slightly shorter than the distance between the eyes of the operator.

[0003]

When a zoom mechanism is attached to the above-described conventional three-dimensional image photographing apparatus, the image becomes larger as the zoom magnification changes, and at the same time, the right eye image and the left eye image are changed. The center-to-center distance of the image for use also changes. FIG. 8 (A)
It is a figure which shows an example of the image image | photographed by standard (100%) using this three-dimensional-image imaging | photography apparatus, FIG.
FIG. 3 is a diagram illustrating an example of an image captured at a zoom of 110% and a zoom of 120%.

[0004] The image when photographed in standard (100%) is
While the center distance between the image for the right eye and the image for the left eye has a parallax of w1, zoom 110% and zoom 120%
In the case of each image captured in the above, the center-to-center distance between the right-eye image and the left-eye image gradually becomes longer than w2, w3, and w1, and has no parallax. Therefore, there is a problem that the stereoscopic visual effect of an image obtained when the zoom mechanism is operated and photographed is deteriorated, and in some cases, the stereoscopic visual effect cannot be obtained.

The present invention has been made under the above circumstances, and provides a stereoscopic image photographing apparatus capable of obtaining a good stereoscopic visual effect even in zoom photographing, and an optical adapter apparatus used in the apparatus. With the goal.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a three-dimensional image photographing apparatus capable of photographing a three-dimensional image, wherein the three-dimensional image photographing apparatus has a predetermined inclination angle opposite to each other. A pair of first mirrors disposed opposite each other with a center-to-center distance, a pair of second mirrors that reflect light reflected from the first mirrors and enter the optical system of the apparatus main body, and the first mirrors And a tilt angle adjusting means for adjusting at least one of the tilt angles, and an optical adapter device capable of obtaining a pair of images having a predetermined parallax is detachably attached to the optical system.

[0007] The above object is also achieved by the present invention.
There is an optical adapter device that is detachable from the optical system of the photographing device and can obtain a pair of images having a predetermined parallax, facing each other at a predetermined tilt angle in opposite directions with a predetermined center distance. A pair of first mirrors, a pair of second mirrors that reflect light reflected from the first mirror and enter the optical system, and a tilt that adjusts a tilt angle of at least one of the first mirrors. This is achieved by providing angle adjusting means.

[0008] According to the above configuration, at the time of zoom photographing, the inclination angle of the first mirror is adjusted by the inclination angle adjusting means to appropriately correct the center-to-center distance of the image, so that an image having parallax is obtained. And a good stereoscopic visual effect can be obtained.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiment described below is a preferred specific example of the present invention,
Although various technically preferable limits are given, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

FIG. 1 is a perspective view showing an embodiment of a three-dimensional image photographing apparatus provided with an embodiment of the optical adapter device of the present invention, and FIG. 2 is a partial view showing a state before the optical adapter device is attached. FIG. 3 is a block diagram showing a schematic configuration example of the inside of the three-dimensional image photographing apparatus.
The three-dimensional image capturing apparatus 100 includes a video camera apparatus 110
And an optical adapter device 130. The optical adapter device 130 is detachable from the video camera device 110.

The video camera device 110 is, for example, 8 mm
It is a general video camera such as a video camera and a digital video camera. The video camera body 111 of the video camera device 110 is formed in a housing shape with a synthetic resin or the like, and a photographing lens 112 is attached to a front surface thereof, and an eye cup 113 with a magnifying lens is detachably attached to a rear surface thereof. Have been.

The video camera body 111 includes a solid-state imaging device (CCD) 114, an amplifier 115, a video signal processing circuit 116, a video recording / reproducing circuit 117, a liquid crystal drive circuit 118, a VTR 119, and a liquid crystal display (L).
CD) 120 and the like. An optical adapter device 130 is detachably screwed to a filter mounting screw portion (mounting portion) 121 mounted on the imaging lens 112 side of the video camera body 111.

The case 131 of the optical adapter device 130
Are formed in a trapezoidal shape by a synthetic resin or the like, and a pair of image capturing windows 132a, 1
32b is provided, and a lens portion mounting opening 133 is provided on the rear surface. A pair of upper and lower claws (locking portions) 134, 134 are provided on a peripheral portion 133 a of the lens portion mounting opening 133.
134 is formed integrally with the claw portions 134, 134.
Is the filter mounting screw portion 12 of the video camera body 111.
1 is detachably screwed on.

Also, the inclined walls 131 on both sides of the case 131
A pair of planar first mirrors 135a and 135b are arranged near the inner surfaces of the a and 131b. That is, the pair of first mirrors 135a and 135b
The light beams La and Lb which are perpendicularly incident on the light emitting devices a and 132b are opposed to each other at a predetermined center distance at an inclination angle of, for example, 45 ° in opposite directions.

Further, behind a center screen (not shown) in the case 131, the screen is formed into a triangular cylindrical shape with the screen, and a pair of planes substantially parallel to the first mirrors 135a and 135b. Second mirrors 136a, 136
6b are arranged. That is, the pair of second mirrors 13
The mirrors 6a and 136b are disposed opposite to each other with a predetermined center distance at an inclination angle of, for example, 45 ° in opposite directions to the reflected lights Laa and Lbb reflected by the first mirrors 135a and 135b. I have. As a result, images corresponding to those viewed from the left and right eyes are condensed on the left half and the right half and enter the photographing lens 112.

Further, on one side of the first mirror 1 near the image capturing window 132a on the upper surface 131c of the case 131.
An inclination angle adjusting means 140 is provided for adjusting the inclination angle of 35a with respect to the image capturing window 132a. The details of the tilt angle adjusting means 140 will be described with reference to a schematic exploded perspective view of the optical adapter device 130 shown in FIG. 4 and a plan view, a sectional side view and a rear view of the tilt angle adjusting means 140 shown in FIG.

The tilt angle adjusting means 140 is provided on the rotating shaft 1.
A disc-shaped operation unit 141 rotatable around 41a, and provided on one end surface of the operation unit 141 so as to surround the rotation shaft 141a (in this example, a range of 300 °), and a first side on one side.
Part 142 of the spiral groove that engages with the mirror 135a
And Inclination angle adjusting means 1 having such a configuration
First, when attaching the rotary shaft 40 of the operation unit 141,
41 a is inserted into a hole 131 d provided on the upper surface 131 c of the case 131, and is screwed from the inside of the case 131.

Next, a projection 135aa provided on one end of the first mirror 135a on one side is inserted into an elliptical hole 131e provided near the hole 131d,
It is inserted into the engagement part 142 of the operation part 141. When operating the inclination angle adjusting means 140, the operation unit 141 is rotated to thereby rotate the projection 13 of the first mirror 135a.
Since 5aa moves along the engagement portion 142, the first mirror 135a can be swung in the direction of the arrow a in the figure around the other end of the first mirror 135a.

When a standard (100%) image is taken by using the stereoscopic image photographing apparatus 100 having such a configuration, as shown by a dashed line in FIG.
The incident lights La and Lb entering from 32a and 132b are reflected at substantially right angles by the first mirrors 135a and 135b, and the reflected lights Laa and Lbb are reflected by the second mirrors 136a and 136.
The light is reflected at a substantially right angle at 36b. And the reflected light L
A and LB are condensed by the photographing lens 112 and enter the solid-state imaging device 114.

The video signal converted by the solid-state imaging device 114 is recorded / reproduced by a VTR 119 via an amplifier 115, a video signal processing circuit 116, and a video recording / reproducing circuit 117, and a liquid crystal. The image is displayed on a liquid crystal display 120 as a small monitor via a drive circuit 118. Therefore, the operator can visually recognize the image projected on the liquid crystal display 120 via the eyecup 113 arranged opposite to the liquid crystal display 120. As shown in FIG. 7A, the image captured in the standard (100%) has a parallax with the center distance w1 between the image for the right eye and the image for the left eye.

Next, zoom 110% and zoom 120%
In this case, in this state, as described in the related art, the distance between the centers of the right-eye image and the left-eye image becomes gradually longer than w2, w3, and w1, and parallax is reduced. No longer have. Thus, by operating the tilt angle adjusting means 140 to appropriately adjust the tilt angle of the first mirror 135a, as shown by the two-dot chain line in FIG. Incident on the first mirror 135a whose inclination angle is appropriately adjusted is reflected at an angle including the adjustment angle, and the reflected light laa is reflected at an angle included in the second mirror 136a by the adjustment angle. Is reflected by

Therefore, the reflected light 1A is reflected by the reflected light L
At approximately the same location as A, the light is condensed by the photographing lens 112 and enters the solid-state image sensor 114. Therefore, this zoom 11
The image taken at 0% and at 120% zoom is shown in FIG.
As shown in (A) and (B), the center-to-center distance between the image for the right eye and the image for the left eye can be both set to w1, and the image has parallax. This makes it possible to improve the stereoscopic visual effect even with an image obtained when the image is taken by operating the zoom mechanism.

In the above-described embodiment, a three-dimensional image photographing apparatus in which an optical adapter device is mounted on a general video camera apparatus for photographing moving images has been described. However, the present invention is not limited to this. A stereoscopic image photographing apparatus in which an optical adapter device is attached to a camera or the like for photographing an image may be used. Also in this case, the optical adapter device is detachably attached to an optical system such as a camera.

[0024]

As described above, according to the present invention, a good stereoscopic effect can be obtained even in zoom photography.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a stereoscopic image photographing apparatus provided with an embodiment of an optical adapter device of the present invention.

FIG. 2 is a partial cross-sectional perspective view showing a state before mounting an optical adapter device of the stereoscopic image photographing device of FIG. 1;

FIG. 3 is a block diagram showing a schematic configuration example of the inside of the three-dimensional image photographing apparatus of FIG. 1;

FIG. 4 is a schematic exploded perspective view of an optical adapter device of the three-dimensional image photographing device of FIG. 1;

5 is a plan view, a sectional side view, and a rear view of an inclination angle adjusting means of the optical adapter device of FIG. 4;

FIG. 6 is a sectional plan view showing an example of an optical path in the optical adapter device of FIG.

FIG. 7 is a view showing an example of an image photographed by the three-dimensional image photographing apparatus of FIG. 1;

FIG. 8 is a diagram illustrating an example of an image captured by a conventional stereoscopic image capturing apparatus.

[Explanation of symbols]

100: stereoscopic image photographing device, 110: video camera device, 130: optical adapter device, 131 ...
-Cases, 132a, 132b ... image capturing windows, 133
... Lens mounting opening, 134 ... Claws (locking parts), 135a, 135b ... First mirror, 136
a, 136b: second mirror, 140: inclination angle adjusting means, 141a: rotating shaft, 142: engaging part

Claims (6)

[Claims] 1. A stereoscopic image photographing apparatus capable of photographing a three-dimensional image, comprising: a pair of first and second stereoscopic image photographing devices which are arranged opposite to each other at a predetermined inclination angle in opposite directions with a predetermined center distance. One mirror and the first
A pair of second mirrors that reflect light reflected from the mirrors and enter the optical system of the apparatus main body; and an inclination angle adjusting unit that adjusts an inclination angle of at least one of the first mirrors, and has a predetermined parallax. A three-dimensional image photographing apparatus wherein an optical adapter device capable of obtaining a pair of images is detachably attached to the optical system. 2. The stereoscopic image photographing apparatus according to claim 1, wherein said tilt angle adjusting means is configured to engage with one end of said first mirror to adjust the tilt angle of said first mirror. 3. The tilt angle adjusting means includes a rotatable operation unit, and a helical engagement portion provided on the operation unit and engaged with one end of the first mirror. The three-dimensional image photographing apparatus according to claim 1, wherein one end of the first mirror is moved along the engagement portion by rotating, and the other end of the first mirror is swung about an axis. 4. An optical adapter device which can be attached to and detached from an optical system of a photographing device and can obtain a pair of images having a predetermined parallax, wherein a predetermined center-to-center distance is set at a predetermined mutually opposite tilt angle. A pair of first mirrors disposed to face each other, a pair of second mirrors that reflect light reflected from the first mirror and enter the optical system, and an inclination of at least one of the first mirrors An optical adapter device comprising: an inclination angle adjusting means for adjusting an angle. 5. The optical adapter device according to claim 4, wherein said tilt angle adjusting means is configured to engage with one end of said first mirror to adjust the tilt angle of said first mirror. 6. The tilt angle adjusting means includes a rotatable operation unit, and a helical engagement unit provided on the operation unit and engaged with one end of the first mirror. The optical adapter device according to claim 4, wherein the rotation causes one end of the first mirror to move along the engagement portion, and causes the other end of the first mirror to swing about an axis.