JPH05158170A - Stereoscopic camera - Google Patents

Abstract

PURPOSE:To prevent a dead space from occurring and to expand a gap between left and right mirrors when a stereoscopic adaptor and a camera main body part are integrated by using the stereoscopic adaptor provided with an optical system whose left and right are asymmetric. CONSTITUTION:The first mirror 21 and the second mirror 22 are arranged at an asymmetric position as for a photographing lens 16. By the left half of the lens 16, the image of an object within a prescribed range set with an optical axis I1 as a center on the right half of one frame of a film by the first mirror 21 and the third mirror 23 of the stereoscopic adaptor 20. By the right half of the lens 16, the image of the object within the prescribed range set with an optical axis I2 as the center is formed on the left half of one frame of the film by the second mirror 22 and the fourth mirror 24 of the adaptor 20. Thus, distances L1 and L2 from the lens 16 to the left and the right optical axes I1 and I2 become different and a distance between the optical axes I1 and I2 can be made longer in comparison with a case that the optical system whose left and right is symmetric is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereo camera,
In particular, it relates to a stereo camera in which a camera body and a stereo adapter are integrally attached.

[0002]

2. Description of the Related Art As shown in FIG. 4 (A), a conventional stereo adapter 1 has four mirrors for separating an image incident on a lens optical path into left and right and forming an image on the left and right of one frame of a film. It has 2, 3, 4, 5. The left and right optical systems composed of these mirrors 2 to 5 are provided symmetrically with respect to the center line of the stereo adapter 1.

On the other hand, in many cameras 6, the taking lens 7 is provided at a position deviated from the center of the camera. This is because the photographing lens 7 is arranged close to the cartridge chamber side or the film chamber side to secure a cohesive space in the camera. Then, FIG. 4B shows a stereo camera in which the stereo adapter 1 is integrally attached to the front surface of the camera 6.

[0004]

However, in the case of a stereo camera in which the stereo adapter 1 and the camera 6 having the above structure are integrally attached, a dead space 8 is generated as shown in FIG. 4 (B). Since a stereoscopic effect can be obtained by the distance between the mirrors 2 and 3 facing the subject, it is preferable to increase the distance between the mirrors 2 and 3.

On the other hand, if a large stereo adapter is used so that the dead space 8 does not occur, the width of the stereo adapter becomes larger than the width of the camera. The present invention has been made in view of such circumstances,
When a stereoscopic camera is formed by integrating a camera main body provided with a photographing lens at a position deviated from the center of the camera and a stereo adapter having the same width as the horizontal width of the camera main body, a dead space does not occur, It is an object of the present invention to provide a stereo camera capable of increasing the mirror interval of the.

[0006]

In order to achieve the above-mentioned object, the present invention integrally mounts a photographing lens on a camera body provided at a position deviated from the center of the camera and on the front surface of the camera body. A stereo adapter,
A stereo adapter having a lateral width that is the same as the lateral width of the camera body and having an asymmetric optical system,
It is characterized by having.

[0007]

According to the present invention, a stereo camera is constructed by integrating a camera main body in which a taking lens is provided at a position deviated from the center of the camera and a stereo adapter having the same width as that of the camera main body. I am trying to do it.
Then, the left and right optical systems of the stereo adapter are made asymmetric so as to correspond to the taking lens deviated from the center of the camera.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a stereo camera according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an embodiment of a stereo camera according to the present invention. 2 is a front view of the stereo camera, and FIG. 3 is a sectional view taken along line 3-3 of FIG.

As shown in these drawings, the stereo camera is mainly a box-shaped camera body 10
And a box-shaped stereo adapter 20 integrally attached to the camera body 10. The camera body 10 is constructed in substantially the same manner as the simple camera "Sharp Run Hi" (trade name) provided by the applicant on July 1, 1987 with a lens attached to a 35 mm size film. Hereinafter, referred to as "film unit with lens". As shown in FIG. 3, the lens-fitted film unit 10 has a plastic unit body 11, a front cover 12, and a back cover 13 as main members. A cartridge chamber 14 and a film chamber 15 are formed on the left and right sides of the unit main body 11, and a plastic taking lens 16 is attached to the front surface via a lens holder 16A, and a shutter, a film winding mechanism, etc. (not shown) are provided. Has been. The photographing lens 16 is arranged so as to be deviated from the center of the film unit with lens 10 toward the cartridge chamber 14 side.

The front cover 12 and the back cover 13 are joined to the unit main body 11 from the front and back and then fixed by ultrasonic welding or the like, and the user can use the cartridge chamber 14 and the film chamber 15.
The inner film (not shown) cannot be taken out. In addition, 17 is a finder and 18 is a winding dial. The stereo adapter 20 includes a first mirror 21, a second mirror 22, a third mirror 23, and a fourth mirror 2.
It is composed of four mirrors No. 4 and a plastic casing 25 for holding each of these four mirrors at predetermined positions, and is accurately positioned and fixed to the front surface of the lens-equipped film unit 10. .. The stereo adapter 20 has the same width as that of the lens-equipped film unit 10 and has an optical system that is asymmetric with respect to the taking lens 16. That is, the first mirror 21 and the second mirror 22 are arranged at asymmetrical positions with respect to the taking lens 16, and the sizes of the mirrors are also different.

Further, as shown in FIG. 3, recesses 26 and 27 are provided between the rear surfaces of the left and right first and second mirrors 21 and 22 and the front surface of the lens-equipped film unit 10 for facilitating camera holding. Has been formed. In FIG. 3, the left half of the taking lens 16 is the stereo adapter 20.
The first mirror 21 and the third mirror 23 of the optical axis I ₁
Is formed on the right half of one frame of the film, and the right half of the taking lens 16 is centered on the optical axis I ₂ by the second mirror 22 and the fourth mirror 24 of the stereo adapter 20. A subject image in a predetermined range is formed on the left half of one frame of the film. That is, this stereo camera images a subject from a position separated by a distance L between the left and right optical axes I ₁ and I ₂ , and images the subject on the left and right of one frame of the film, respectively.

When a photograph taken in stereo in this manner is viewed by a stereo viewer, a stereoscopic object can be seen. Also, because it has asymmetrical optical system with respect to the imaging lens 16 as described above, the distance L ₁ and L ₂ from the photographic lens 16 to the optical axis I _1, I ₂ of the right and left differ (L ₁ <L ₂ ), the distance L between the optical axes I ₁ and I _{2 in} comparison with the one using a symmetrical optical system
(= L ₁ + L ₂ ) can be lengthened.

The stereo camera having the above structure is packaged in a package 30. The package 30 is formed of a printable cardboard, a thin plastic sheet, or the like, and is integrally formed with the lens-fitted film unit 10.
Also, the stereo adapter 20 is formed in a box shape that covers the front surface, the back surface, the side surfaces, the upper surface, and the lower surface. As shown in FIG. 2, the packaging body 30 has an opening 31 corresponding to the left photographing area facing the first mirror 21 of the stereo adapter 20, the right photographing area facing the second mirror 22, and the finder area of the finder 17. 1 is formed with a notch 33 for pressing the shutter and an opening 34 facing the winding dial 18, as shown in FIG. Further, perforations 35 and 36 are provided on both side surfaces facing the concave portions 26 and 27 of the stereo adapter 20 (that is, the back surfaces of the first mirror 21 and the second mirror 22).

Various designs can be applied to the surface of the packaging body 30, and the surfaces of the lens-equipped film unit 10 and the stereo adapter 20 covered by the packaging body 30 can be made into an inexpensive rough surface. .. The perforations 35 are perforations for separation, and the perforations 36 are perforations for bending. When the camera is used, the side surface of the package 30 is cut along the separating perforations 35, and is bent inward along the folding perforations 36 as shown by the chain double-dashed line in FIG. This allows
The recesses 26, 27 covered by the package 30 appear on the side of the stereo camera, and the recesses 26, 27 are taken at the time of photographing.
7 can be used as a finger grip when the camera is held, and the camera can be easily held.

In this embodiment, the lens-fitted film unit is used as the camera body. However, the present invention is not limited to this, and any type may be used as long as the photographing lens is provided at a position deviated from the center of the camera.

[0016]

As described above, according to the stereo camera of the present invention, since the stereo adapter having the asymmetrical optical system is used, the stereo adapter and the photographing lens are located at the position deviated from the center of the camera. When the stereo camera is configured by integrating with the provided camera body, both can have the same width,
As a result, there is an advantage that a dead space does not occur and the distance between the left and right mirrors can be increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a stereo camera according to the present invention.

FIG. 2 is a front view of the stereo camera.

3 is a sectional view taken along line 3-3 of FIG.

FIGS. 4A and 4B are diagrams used to describe a conventional stereo camera, respectively.

[Explanation of symbols]

 10 ... Camera body (film unit with lens) 16 ... Shooting lens 20 ... Stereo adapter 21 ... First mirror 22 ... Second mirror 23 ... Third mirror 24 ... Fourth mirror

Claims (1)

[Claims] 1. A camera body in which a photographing lens is provided at a position deviated from the center of the camera, and a stereo adapter integrally attached to the front surface of the camera body, the width being the same as the width of the camera body. And a stereo adapter having a laterally asymmetrical optical system, and a stereo camera.