JPH0540319A - Stereoscopic photography camera - Google Patents

Abstract

PURPOSE:To make the contact state between a film and an lenticular plate uniform as to the stereoscopic photography camera which takes a stereoscopic photography by sliding the lenticular plate during photography with the lenticular plate on the film in contact. CONSTITUTION:A guide shaft 43 is provided projectingly on a main body 21a and a bracket 46 which has a guide bush 47 is provided projectingly on a film back frame 22a; and the guide shaft 43 is held slidably on the guide bush 47, and a coil spring 48 is mounted on the projection part of the guide shaft 43 projecting from the guide bush 43. An adjusting nut 44 is engaged threadably with the tip part of the guide bush 47 and the coil spring 48 is interposed between the adjusting nut 44 and guide bush 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lenticular plate type stereoscopic camera.

[0002]

2. Description of the Related Art Conventionally, as a stereoscopic photographing apparatus, one disclosed in Japanese Patent Publication No. 45-23512 has been known. This stereoscopic photography device has a lenticular plate in which a large number of cylindrical lenses are arranged in series in a photographing camera, and this lenticular plate is provided with a rotation center shaft extending in the vertical direction so that the lenticular plate is rotatably supported. Although the lenticular plate is rotated to expose the converged image of the lenticular plate to the photographic film to take a three-dimensional photograph, there is a problem that the developed photograph is apt to be distorted.

As a solution to this problem, the applicant applied for a new stereoscopic camera (Japanese Patent Application No. 3-957).
No. 85). This stereoscopic camera, as shown in FIG.
The camera housing 1 is composed of a front housing 1a and a rear housing 1b,
A shooting lens is attached to the front housing 1a, and the front housing is
A pair of brackets 3 are provided in the vicinity of the photographing opening 2 of 1a, a guide rod 4 is provided between the pair of brackets 3, and a slider 5 is slidably provided on the guide rod 4. A frame body 5a having an open inside is attached to the slider 5, and a lenticular plate 6 made up of a large number of cylindrical lenses extending in the vertical direction is attached to the frame body 5a via a glass plate 5b. The slider 5 slides the lenticular plate 6 laterally by one pitch of the cylindrical lens.

A frame 7 having a rectangular opening is detachably provided on the rear housing 1b, and a support plate 8a for supporting a film 8 is detachably attached to the frame 7 via a film holder 9. Has been. Rear housing
1b is slidably fitted to the front housing 1a, and the front housing 1a
The rear housing 1b and the rear housing 1b are urged by a spring 10 in directions toward each other.

[0005]

However, in the case of this stereoscopic photographing camera, a part of the fitting peripheral edge of the rear housing 1b is fitted shallower than the other parts of the same fitting peripheral edge by the biasing force of the spring 10. Then, the front housing and the rear housing are not smoothly fitted to each other, and the lenticular plate 7 and the photosensitive surface of the film 8 do not uniformly adhere to each other, so that the convergent image of the cylindrical lens is uniform on the film 8. It is also possible that no image is formed in this state.

[0006]

In order to solve the above-mentioned problems, in a stereoscopic photographing camera according to the present invention, a front casing provided with a photographing lens and a shutter mechanism and a rear casing supporting a photoconductor are fitted to each other. Then, a light-shielding space is formed inside the housing, and a lenticular plate made up of a large number of vertically extending cylindrical lenses arranged in a row in the light-shielding space is arranged so that the cylindrical lens projects toward the subject side. At the same time, the front housing is provided with a slide mechanism that slidably supports the lenticular plate laterally by one pitch of the cylindrical lens, and the shutter provided in front of the taking lens or the lenticular plate is opened. A stereoscopic camera that slides the lenticular plate laterally to expose an image of a subject onto a photoconductor, A guide shaft extending toward the other housing is projected on one of the housings of the rear housing and the rear housing, and the other housing of the front housing and the rear housing is projected.
A bracket having a guide bush is projected, the guide shaft is slidably held by the guide bush, and a coil spring is attached to a protruding portion of the guide shaft protruding from the guide bush. A stereoscopic photographing camera, characterized in that an adjusting nut is screwed on and a coil spring is elastically urged between the adjusting nut and the guide bush.

[0007]

According to the stereoscopic camera of the present invention, since the guide shaft is slidably held by the guide bush, when the front casing and the rear casing are fitted to each other to form a light-shielding space in the casing, By adjusting the screwing position of the adjusting screw that is screwed onto the guide shaft, the biasing force of the coil spring can be adjusted, and the guide shaft is guided by the guide bush, so the fitting peripheral edge of the front casing and the rear casing is adjusted. Part of the part does not fit in a one-sided state. Therefore, the lenticular plate and the photoconductor are brought into close contact with each other in a uniform state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A stereoscopic camera according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the main cross-sectional structure of the stereoscopic photographing camera of the embodiment, and 20 is a stereoscopic photographing camera. The stereoscopic photographing camera 20 includes a body main body 21a as a front housing and a film back frame 22a as a rear housing that form a light-shielding space inside. The body main body 21a and the film back frame 22a have side wall portions 21b and 22b slidably fitted to each other. The body body 21a has a bellows portion 23 for mounting a photographing lens (not shown), and an opening portion 24 for taking a subject image is opened in a front wall portion 21b of the body body 21a.

As shown in FIG. 2, brackets 25 are formed in pairs on the upper and lower sides of the opening 24 on the rear surface side of the front wall 21c of the body 21a. A guide shaft 26 is fixed to each of the upper and lower brackets 25, 25. A bearing 27 is slidably fitted to the guide shaft 26. The bearing 27 has a rectangular opening 2
A mounting plate 28 having 8a is attached. A frame body 29 having an opening 29a corresponding to the opening 28a is fixed to the mounting plate 28. The frame 29 is for mounting a lenticular plate 30, and the openings 28a, 29a are for allowing the subject image from the photographing lens to pass therethrough. A glass plate 31 having a uniform thickness and flat front and back surfaces is fixed to the rear end of the frame 29, and a lenticular plate 30 is tightly fixed to the back surface of the glass plate 31 by screwing.

The lenticular plate 30 is formed by arranging a large number of cylindrical lenses extending in the vertical direction in a row in the horizontal direction. In this embodiment, one pitch of the cylindrical lenses is set to 0.4 mm. The lenticular plate 30 is oriented so that the convex surface of the cylindrical lens is located on the side of the taking lens, and the frame body is provided so that the photosensitive surface of the film 54 (see FIG. 1) as a photosensitive body attached to the film back frame 22a can be in close contact. It is attached to the rear side of 29.

The slide mechanism for sliding the lenticular plate 30 includes a guide shaft 26, a bearing 27 and a frame body 2.
9, coil spring 32, cams 33 and 34, nut 3
5, L-shaped bracket 36, screw rod 37, motor 40, and gear mechanism 41.

That is, the mounting plate 28 is attached to the right end of the mounting plate 28.
Is attached to one end of a coil spring 32 that biases the. The other end of the coil spring 32 has a protrusion 21d protruding from the front wall 21c of the body 21a.
Is attached to. A cam 33 having an inclined cam surface is bolted to the left end of the mounting plate 28, and the cam 34 is in contact with the cam 33. The cam 34 is fixed to an L-shaped bracket 36 of a nut 35, and the nut 35 is screwed onto a screw rod 37 extending in the up-down direction along the front wall of the body 21a. The upper and lower portions of the screw rod 37 are held by bearings 37a and 37b. Reference numeral 38 is a guide plate fixed to the L-shaped bracket 36, and the guide plate 38 is slidably guided by a guide plate 39 on the left side wall of the body 21a. The screw rod 37 rotates the rotation output of the motor 40 arranged at the lower portion of the body body 21a via the gear mechanism 41, moves the nut portion 35 up and down, and mounts the mounting plate 2 via the cams 33 and 34.
Slide 8 laterally. A bracket 42 holds the motor 40.

As shown in FIG. 1, guide shafts 43 are projectingly provided at four corners on the rear surface side of the front wall of the body body 21a. The guide shaft 43 guides the film back frame 22a when the film back frame 22a is fitted to the body main body 21a, and has a flange 43a at the mounting base, and the flange 43a is screwed to the body main body 21a. It is fixed. A thread groove is formed at the tip of the guide shaft 43, and the adjusting nut 44 is screwed into the thread groove.

On the rear wall of the film back frame 22a, the film back frame 22a is attached to the body 21a.
A round hole 45 is formed so that the guide shaft 43 can be faced when the guide shaft 43 is fitted. A cylindrical bracket 46 is formed on the peripheral surface of the round hole 45 on the surface of the film back frame 22a facing the front wall of the body 21a.
Is projected. A flange 46a is formed on the mounting base of the bracket 46, and the flange 46a is screwed and fixed to the film back frame 22a. A guide bush 47 is fixed to the tip of the bracket 46 by press fitting. The guide bush 47 has a sliding hole 47a that holds the guide shaft 43 smoothly without rattling, and the guide shaft 43 is slidably held in the sliding hole 47a. A coil spring 48 is inserted around the portion where the guide shaft 43 projects from the guide bush 47 toward the film back frame 22a. The front end of the coil spring 48 is supported in contact with the guide bush 47, and the rear end of the coil spring 48 is fixed by an adjusting nut 44 screwed to the guide shaft 43. The round hole 45 of the film back frame 22a is closed by a cover 49.

The film back frame 22a has an opening 50 corresponding to the size of the mounting plate 28. A photographing frame 51 having an opening 51a similar in shape to the lenticular plate 30 is bolted to the outer wall surface of the film back frame 22a which is the peripheral edge of the opening 50. A groove 51b is formed in the inner end surface of the opening 51a of the photographing frame 51 so as to extend in the circumferential direction of the opening 51a. A film holder 52 having a groove-shaped cross section and fitted in the groove 51b is supported in the groove 51b. A support plate 53 having a highly accurate flatness is held by the film holder 52. The support plate 53 has a rectangular planar shape, and four sides of the support plate 53 are fitted to the film holder 52. A film 54 as a photoconductor is brought into close contact with the surface of the support plate 53 facing the lenticular plate 30.

The film 54 is pressed so as to come into close contact with the lenticular plate 30, and the guide shaft 43 is attached to the guide bush 47 on the film back frame 22a side.
The coil spring 48 on the guide shaft 43.
When the adjustment nut 44 is screwed onto the film back frame 22a, the film back frame 22a is biased toward the body body 21a. Therefore, when the film 54 is evenly adhered to the support plate 53 of the photographing frame 51 and the photographing frame 51 is bolted to the film back frame 22a, the film 54 is pressed against the lenticular plate 30. The film back frame 22a and the body main body 21a are urged by coil springs 48 toward each other. However, since the guide shaft 43 is guided by the guide bush 47, the film back frame 22a and the body main body 21a. The state of partial scraping is eliminated, and the contact state between the lenticular plate 30 and the film 54 becomes uniform.

Further, when the thicknesses of the films 54 are different, by adjusting the screwing position of the adjusting nut 44, the crimping force between the film 54 and the lenticular plate 30 can be adjusted and the parts can be easily replaced. The film 54
In the case of developing, the bolts of the photographing frame body 51 are loosened and the photographing frame body 51 is removed from the film back frame 22a. For example, both the photographing frame body 51 and the film holder 52 are placed in front of and behind the camera. It is also conceivable that the structure is divided into two parts in the direction, and both are fastened together by bolts and nuts, and the bolts and nuts are detached from the photographing frame 51 when the support plate 53 with the film 54 adhered thereto is attached and detached.

When stereoscopic photography is performed by the camera of this embodiment, the subject is photographed while slowly rotating it about a vertical line. At this time, the lenticular plate 30 is used as a cylindrical lens. Slide by the pitch. The rotation angle of the subject at this time is determined by the aptitude of the photograph to be taken for stereoscopic viewing, but about 10 degrees has been experimentally obtained.

Further, in FIG. 2, reference numeral 55 denotes a reticle plate fixed to the lower end of the frame body 29.
A large number of fine slits extending in the vertical direction are formed in the longitudinal direction of the reticle plate 55. The slits of the reticle plate 55 are observed by an optical unit composed of a light emitting element and a light receiving element fixed to the body main body 21a, and the frame 29
Is generated as a pulse signal. This pulse signal is transmitted to the control means (not shown) and the frame 29
Is measured, and when the frame body 29 slides by a predetermined movement amount, the shutter is closed and the motor 40
Stop the rotation of.

[0021]

Since the stereoscopic camera according to the present invention is configured as described above, a part of the fitting peripheral edge portion of the rear housing is fitted shallower than other parts of the same fitting peripheral edge portion, and the front portion There is no longer a one-sided state between the chassis and the rear chassis,
Since the state where the lenticular plate and the photosensitive surface of the film are not evenly adhered to each other is prevented from occurring, the converged image of the cylindrical lens is formed on the photosensitive body in a uniform state.

[Brief description of drawings]

FIG. 1 is a configuration diagram of main components of a stereoscopic camera according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram from the rear of the stereoscopic photographing camera according to the embodiment of the present invention.

FIG. 3 is a main configuration diagram of a fitting portion of a conventional stereoscopic camera.

[Explanation of symbols]

 20 Stereoscopic Camera 21a Body Main Body 22a Film Back Frame 30 Lenticular Plate 43 Guide Shaft 44 Adjustment Nut 45 Round Hole 46 Bracket 47 Guide Bushing 48 Coil Spring 51 Shooting Frame 53 Support 54 Film (Photosensitive Body)

Claims (1)

[Claims] 1. A front housing provided with a photographing lens and a shutter mechanism and a rear housing supporting a photoconductor are fitted to each other to form a light-shielding space inside the housing, and the light-shielding space has a vertical direction. A lenticular plate consisting of a large number of cylindrical lenses extending in a row in the horizontal direction is arranged so that the cylindrical lens protrudes toward the subject side, and the lenticular plate is arranged horizontally on the front housing for one pitch of the cylindrical lens. A slide mechanism for slidably supporting is provided, and when the shutter provided in front of the taking lens or the lenticular plate is opened,
A stereoscopic camera that slides the lenticular plate laterally to expose an image of a subject on a photoconductor, wherein a guide shaft extending toward the other casing is provided in either one of the front casing and the rear casing. A bracket having a guide bush is projected on the other housing of the front housing and the rear housing, and the guide shaft is slidably held by the guide bush and projected from the guide bush. A coil spring was attached to the protruding portion of the guide shaft, an adjusting nut was screwed on the tip of the guide bush, and the coil spring was elastically urged to be interposed between the adjusting nut and the guide bush. A stereoscopic camera that is characterized.