JPH05297484A - Stereoscopic camera - Google Patents

Abstract

PURPOSE:To easily discriminate left and right printed photographs even in the case that the left and right printed photographs ae scattered. CONSTITUTION:As to the stereoscopic camera for photographing an object by a pair of left and right photographic lenses 10L and 10R and simultaneously imprinting respective images on two frames of a film, a character showing the identification of left and right printed photographs is simultaneously imprinted on each frame of the film with the object image. Thus, even in the case that the left and right photographs are scattered after printing is completed, it is easily identified which photograph is the left, or right one based on the character on the printed photograph. And also, the pair of left and right photographic lenses 10L and 10R is arranged so that the optical axes of the pair of left and right photographic lenses 10L and 10R may be respectively shifted outward by as long as the distance from the center of the frame corresponding to each photographic lens. Thus, a difference corresponding to the deviation of the optical axes is generated on the left and right printed photographs, so that the discrimination between the left and right photographs can be attained, and also, the distance between the optical axes of the pair of left and right photographic lenses 10L and 10R is lengthened, and then, stereoscopic photographing can be performed with a stereoscopic effect.

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, the present invention relates to a stereo camera in which a subject is photographed by a pair of left and right photographing lenses and is photographed in two frames of a film at the same time.

[0002]

2. Description of the Related Art A conventional stereo camera of this type is shown in FIG. As shown in the figure, this stereo camera has a pair of left and right taking lenses 2L and 2R, and the subject image is simultaneously projected on each of the two frames (see FIG. 6) of the film 4. Incidentally, a pair of left and right taking lenses 2L,
The distance L between the optical axes I _{L and} I _{R of the} 2R is 38 mm when the effective size of one frame on the film 4 is 24 × 36 mm and the gap between the frames is 2 mm as shown in FIG.

According to this stereo camera, the same as the film unit with a lens "Shakenrun" (trade name) provided by the applicant on July 1, 1987, which has a lens attached to a 35 mm size film. It can be made compact and it becomes possible to provide a film unit with a lens for stereoscopic photography. In order to print based on the negative film obtained from this stereo camera and to view the left and right print pictures as a stereoscopic picture, the left and right print pictures are set in the stereoscopic viewer. That is, the right print photograph is set in the viewer's right eye view range, and the left print photograph is set in the viewer's left eye view range.

[0004]

By the way, since the printed photograph is printed for each frame of the negative film, the left and right printed photographs printed on the basis of the negative film obtained from the conventional stereo camera are disjointed. There is a risk of becoming. Then, once the left and right print pictures are separated, the left and right print pictures are almost the same, so it is difficult to distinguish between the left and right. Therefore, the negative number and the number printed on the back side of the print picture are collated, It was necessary to write a large identification number and letters at the beginning.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stereo camera capable of easily distinguishing left and right print photographs even if the left and right print photographs are disjointed. To do.

[0006]

In order to achieve the above-mentioned object, the present invention is a stereo camera in which an object is photographed from two or more positions horizontally separated by a predetermined distance and the images are simultaneously photographed on two or more frames of the film. In the above, each of the frames to be imprinted at the same time is provided with imprinting means for imprinting characters indicating the left and right of the print photograph at the same time.

Further, in a stereo camera in which a subject is photographed by a pair of left and right photographing lenses and is photographed on two frames of a film at the same time, the optical axis of the pair of left and right photographing lenses is from the center of the frame corresponding to each photographing lens. It is characterized in that the pair of left and right photographing lenses are arranged so as to be shifted outward by the same distance.

[0008]

According to the present invention, the characters for identifying the left and right sides of the print photograph are imprinted on each frame at the same time as the subject image. As a result, even if the left and right print photographs are separated after printing, the left and right prints can be easily identified by the characters on the print photographs.

Further, the pair of left and right taking lenses are arranged so that the optical axes of the pair of left and right taking lenses are shifted outward by the same distance from the centers of the frames corresponding to the respective taking lenses. As a result, a difference occurs between the left and right printed photographs according to the amount of deviation of the optical axis, which makes it possible to discriminate between the left and right, and it is possible to increase the distance between the optical axes of the pair of left and right taking lenses, resulting in a stereoscopic effect. Stereo shooting is possible.

[0010]

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 schematic configuration diagram showing an embodiment of a stereo camera according to the present invention.
As shown in the figure, this stereo camera has a pair of left and right taking lenses 10L and 10R, and a dial 14 is arranged immediately in front of the film 12.

The pair of left and right taking lenses 10L and 10R are
As shown in FIG. 2, the optical axes I _{L and} I _R are arranged so as to be shifted outward from the center of each frame by the same distance. That is, the distance L between the optical axes I _{L and} I _{R of the} pair of left and right taking lenses 10L and 10R is 50 mm when the effective size of one frame on the film 12 is 24 × 24 mm and the gap between each frame is 2 mm. That is, it is wider than the conventional inter-optical axis distance of 38 mm shown in FIGS. In addition, it is preferable that the distance between the optical axes of the pair of left and right photographing lenses is wide in order to obtain a stereoscopic effect.

The dial 14 is composed of a transparent sheet on which letters L and R are printed in black as shown in FIG. 2, for example. According to the stereo camera having the above-described configuration, the left taking lens 10L projects the character L on the left frame at the same time as the subject image, and similarly, the right taking lens 10R projects the character R on the right frame at the same time as the subject image. It will be imprinted.

Therefore, the left and right print photographs, which have been developed based on the negative film by developing the film photographed in stereo by the above stereo camera, can be distinguished from each other by the letter L or R on the print photograph. You can definitely set the print picture of to the viewer for stereoscopic photography. 3A and 3B are a schematic plan view and a cross-sectional view of a viewer in which left and right print photographs are set, respectively. As described above, assuming that the effective size of one frame is 24 × 24 mm, the center-to-center distance A on the left and right prints is 24 × 36.
The distance is narrower than the center-to-center distance B on the printed photograph in the case of mm. For example, when the left and right print photographs are L size (width 127 mm) and are arranged at intervals of 3 mm across the partition plate 20, the center-to-center distance A is 88 mm.
Is smaller than the center-to-center distance B (130 mm).

It is easier to see if the center-to-center distance on the left and right printed photographs is closer to the human eye width (about 65 mm). Also,
Even when the right and left lines of sight are bent by using the prisms 22L and 22R so as to correspond to the center-to-center distances on the left and right print photographs, the prisms 22L and 2 having the smaller center-to-center distances are used.
There is an advantage that the thickness of 2R can be reduced.

FIG. 4A is a configuration diagram of a main part showing another embodiment of the stereo camera according to the present invention. As shown in the figure, this stereo camera is provided with a pair of left and right photographing lenses 10.
The light blocking plate 2 is attached to the light blocking tube 24 extending from L and 10R to the film surface.
6 are integrally formed. This shading plate 26 is shown in FIG.
As shown in (B), letters L and R are provided. still,
In this embodiment, the pair of left and right taking lenses are arranged outside the center of each frame, but the present invention is not limited to this, and may be arranged at the center position of the frame. The present invention can also be applied to a stereo camera capable of simultaneously shooting three or more frames.
In this case, for example, characters such as A, B, C, ... Are imprinted from the end, and when viewing stereoscopically with a viewer, two arbitrary print photographs are selected from these. The three-dimensional effect changes depending on how you choose the two print photos.

Further, in the present embodiment, the case of printing on the full-size two frames of the 35 mm size film has been described, but it is also applicable to the case of printing on the half-size two frames. In this case, since the half size is vertically long, it is preferable to imprint characters on or under the frame.

[0017]

As described above, according to the stereo camera of the present invention, the characters indicating the left and right of the printed picture are simultaneously printed, so that the left and right printed pictures are separated even if they are separated. It is possible to easily discriminate the print photograph of. In addition, since the optical axes of the pair of left and right shooting lenses are widened to the left and right respectively, stereo shooting with a stereoscopic effect is possible, and the distance between the centers of the print pictures in the viewer is narrower, making it easier to see and prism for bending the line of sight. In the case of using, since the prism can be thin, the design and manufacture of the prism can be facilitated and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a stereo camera according to the present invention.

FIG. 2 is a diagram used for explaining the relationship between the optical axis intervals of the left and right photographing lenses of the stereo camera in FIG. 1 and the relationship between the dial and each frame of the film.

3A and 3B are respectively a schematic plan view and a cross-sectional view of a viewer on which left and right print photographs are set.

FIG. 4A and FIG. 4B are main part configuration diagrams showing another embodiment of the stereo camera according to the present invention.

FIG. 5 is a schematic configuration diagram showing an example of a conventional stereo camera.

6 is a diagram used for explaining the optical axis intervals of the left and right photographing lenses of the stereo camera in FIG.

[Explanation of symbols]

 10A, 10B ... Photographing lens 12 ... Film 14 ... Character plate 20 ... Partition plate 22L, 22R ... Prism 24 ... Light-shielding cylinder 26 ... Light-shielding plate

Claims (7)

[Claims] 1. A stereo camera for photographing a subject from two or more positions horizontally separated by a predetermined distance and simultaneously imprinting the photograph on two or more frames of a film respectively. A stereo camera characterized in that it is provided with an imprinting means for simultaneously imprinting characters indicating the identification such as. 2. The stereo camera according to claim 1, wherein the imprinting means is provided in a part of an exposure screen and is composed of a transparent sheet on which the characters are printed. 3. The stereo camera according to claim 1, wherein the imprinting means is a light-shielding plate provided in a part of the exposure screen and having the characters formed therein. 4. The stereo camera according to claim 3, wherein the light-shielding plate is integrally formed with a light-shielding tube portion extending from the taking lens to the film surface. 5. A stereo camera for photographing a subject with a pair of left and right photographing lenses and simultaneously photographing the two frames of a film respectively, wherein an optical axis of the pair of left and right photographing lenses is from a center of a frame corresponding to each photographing lens. A stereo camera in which the pair of left and right photographing lenses are arranged so as to be shifted outward by the same distance. 6. The stereo according to claim 5, further comprising a light shielding plate for shielding a part of each frame so that the optical axes of the pair of left and right photographing lenses are at the center of the effective screen of each frame. camera. 7. The stereo camera according to claim 6, wherein the light-shielding plate is provided with characters for identifying left and right of a print photograph.