JP2694933B2 - Stereo camera - Google Patents

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 stereo adapter is integrally attached to the camera body.

[0002]

2. Description of the Related Art Generally, when a conventional camera is used to take a stereo picture, a stereo adapter is attached to the front of the taking lens. The stereo adapter has four mirrors and separates the image incident on the lens optical path into left and right and forms images on the left and right of one frame. In addition, various stereo cameras dedicated to stereo photography, in which a stereo adapter is integrally fixed to the front surface of the camera, have been proposed.

[0003]

By the way, in the case of a stereo camera in which a stereo adapter is fixed to the front surface of the camera, the light entering the viewfinder and the light emitted from the strobe will not be an obstacle, that is, a hurt will occur. You need to configure the stereo adapter so that it does not occur. Therefore,
The conventional stereo adapter must be made small so as not to be eclipsed, and as a result, there is a problem that the distance between the left and right mirrors facing the subject of the stereo adapter cannot be increased. In order to obtain a desired stereoscopic effect, it is preferable to increase the distance between the left and right mirrors facing the subject.

The present invention has been made in view of the above circumstances, and a stereo camera is formed by integrating a stereo adapter on the front surface of a camera main body in which a viewfinder and a strobe are laterally displaced from a photographing lens. When configuring,
An object of the present invention is to provide a stereo camera capable of increasing the left and right mirror intervals.

[0005]

In order to achieve the above object, the present invention provides a camera main body having a finder provided at a position laterally displaced from a photographing lens, and an integral body on the front surface of the camera main body. And a stereo adapter having an optical system asymmetric with respect to the taking lens so that the light incident on the viewfinder is not disturbed.

Further, there is provided a camera main body portion in which a strobe is provided at a position laterally displaced with respect to a photographing lens, and a stereo adapter integrally attached to a front surface of the camera main body portion. A stereo adapter having an optical system asymmetric with respect to the taking lens so that light emission is not disturbed is provided.

[0007]

According to the present invention, the camera body is provided with a viewfinder and a strobe at a position laterally displaced from the photographing lens, and the stereo adapter is integrally fixed to the front surface of the camera body. I am trying to configure a stereo camera. The stereo adapter has an optical system that is asymmetric with respect to the taking lens. That is,
Of the left and right optical systems of the stereo adapter, the finder and strobe side optical systems are made small so as not to interfere with the light entering the viewfinder or the light emitted from the strobe,
The other optical system is larger than the optical system on the finder or strobe side. It should be noted that, as compared with a stereo adapter in which the optical system on the finder or strobe side and the other optical system are symmetrical, the optical system asymmetrical with respect to the taking lens as described above can have a larger left-right mirror interval. .

[0008]

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

As shown in these drawings, the stereo camera is mainly a box-shaped camera body 10
And a stereo adapter 20 integrally fixed to the camera body 10. Camera body 1
0 is a simple camera "Shooting Run Flash" provided by the applicant with a lens attached to a 35mm size film.
It is constructed almost in the same manner as the (commercial name) and is hereinafter referred to as a "film unit with lens". As shown in FIG. 2, the lens-fitted film unit 10 includes 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 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 (not shown),
A film winding mechanism and the like are provided.

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 FIG. 1, 17 is a finder and 18 is a strobe. These viewfinder 17 and strobe 18 are shown in FIG.
Located on the right side above.

The stereo adapter 20 includes the first mirror 2
1, second mirror 22, third mirror 23, fourth mirror 24
And a plastic housing 25 for holding these four mirrors at predetermined positions, and they are accurately positioned and fixed to the front surface of the lens-equipped film unit 10. As shown in FIGS. 1 and 3, the stereo adapter 20 is designed so that the stereo adapter 20 does not enter the finder area and strobe area, that is, the incident light to the finder 17 and the light emission from the strobe 18 are not disturbed. Shooting lens 16
It has an asymmetrical optical system with respect to. That is, the first
The 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. 2, a recess 26 is formed between the rear surface of the first mirror 21 and the front surface of the lens-equipped film unit 10 for facilitating camera holding. In FIG. 2, the left half of the taking lens 16 is
The first mirror 21 and the third mirror 23 of the stereo adapter 20 form a subject image in a predetermined range centered on the optical axis I ₁ on the right half of one frame of the film, and the taking lens 1
The right half of 6 is the second mirror 22 of the stereo adapter 20.
Then, the fourth mirror 24 forms a subject image in a predetermined range centered on the optical axis I ₂ on the left half of one frame of the film. That is, this stereo camera has left and right optical axes I ₁ , I
_The subject is photographed from a position separated by the distance L between the _{two, and} is photographed 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 different (L _1> L ₂ ). As a result, compared with the case where the left-side optical system including the first mirror 21 and the third mirror 23 is symmetrical to the right-side optical system including the second mirror 22 and the fourth mirror 24 with respect to the taking lens 16, the optical axis The distance L between I ₁ and I ₂ can be increased.

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 shape that covers the front surface, the back surface, the side surface, the upper surface, and the lower surface. This package 3
0 is the first of the stereo adapter 20 as shown in FIG.
Aperture 3 corresponding to the shooting area on the left facing the mirror 21
The first and second mirrors 22 have an opening 32 corresponding to the right photographing area, a viewfinder 17, an opening for the strobe 18, and the like. Furthermore, the concave portion 2 of the stereo adapter 20
The side surface facing 6 (that is, the rear surface of the first mirror 21) is provided with perforations (not shown) for separation.

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 finished into an inexpensive rough surface. . Further, when the camera is used, the side surface of the package 30 is cut along the perforation for separating and is bent inward as shown by a chain double-dashed line in FIG. As a result, the concave portion 26 covered by the package 30 appears on the side of the stereo camera, and the concave portion 26 can be used as a fingerhold when the camera is held during photographing, and the camera can be easily held.

In the present embodiment, the lens-fitted film unit with a strobe is used as the camera body, but the present invention is not limited to this, and a lens-fitted film unit for panoramic photography may be used. Any camera may be used as long as at least one of them is provided at a position laterally displaced from the photographing lens.

[0017]

As described above, according to the stereo camera of the present invention, the stereo adapter is integrated with the front surface of the camera body in which the viewfinder and the strobe are laterally displaced with respect to the taking lens. When configuring the camera, the left and right optical systems of the stereo adapter were made asymmetric with respect to the shooting lens, so that the incident light to the viewfinder and the light emission from the strobe could not be obstructed, and the distance between the left and right mirrors could be increased. There is an advantage that can be done.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a right side view of FIG. 1;

[Explanation of symbols]

 10 ... Camera body (film unit with lens) 16 ... Shooting lens 17 ... Viewfinder 18 ... Strobe 20 ... Stereo adapter 21 ... First mirror 22 ... Second mirror 23 ... Third mirror 24 ... Fourth mirror

Claims (2)

(57) [Claims] 1. A camera main body having a finder provided at a position laterally displaced from a taking lens, and a stereo adapter integrally attached to a front surface of the camera main body, wherein A stereo camera, comprising: a stereo adapter having an optical system that is asymmetric with respect to the taking lens so that incident light is not disturbed. 2. A camera main body having a strobe provided at a position laterally displaced from a photographing lens, and a stereo adapter integrally attached to a front surface of the camera main body, A stereo camera comprising: a stereo adapter having an asymmetrical optical system with respect to the taking lens so that light emission is not disturbed.