JP2928401B2 - 3D image capturing device - Google Patents

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 for photographing a three-dimensional image (for example, a three-dimensional photograph) using a lenticular plate.

[0002]

2. Description of the Related Art As a three-dimensional photographing device, Japanese Patent Publication No. Sho 4
One disclosed in Japanese Patent Publication No. 5-23512 is known.

According to this patent invention, as shown in FIG. 11, a subject 2 is placed on a turntable 1 and a lenticular plate 3 having a series of cylindrical lenses is joined to a photosensitive plate 4. The photosensitive plate 4 to which the center plate 1 is attached is disposed in the camera 5, and the center point 1a of the turntable 1 and the center point 4 of the photosensitive plate 4
The turntable 1 and the camera 5 are paired so that a is positioned on the optical axis of the lens 6 of the camera 5, and the turntable 1 and the photosensitive plate 4 are rotated synchronously, so that the turntable 1 rotates. Accordingly, the peripheral surface of the subject 2 that is displaced is photographed continuously or intermittently on the photosensitive plate 4 sequentially.

According to this photographing apparatus, the reflected light from the part 2a of the peripheral surface of the subject 2 enters the lenticular plate 3 via the lens 6, is refracted by the lenticular plate 3, reaches the photosensitive plate 4, and is exposed to light. The plate 4 is exposed. When the photosensitive plate 4 is exposed, the reflected light of the subject 2 is converged linearly by passing through the cylindrical lens of the lenticular plate 3, and a linear converged image is exposed on the photosensitive plate 4. By rotating the photosensitive plate 4 while the turntable 1 is rotating, the photosensitive plate 4 is exposed to a continuous converged image having parallax.

Therefore, when the lenticular plate 3 is joined to the photo obtained by developing the photosensitive plate 4 separated from the lenticular plate 3 by adjusting the pitch again, and the lenticular plate 3 is joined by both the left and right eyes, one pitch width is obtained. The convergence image enlarged in FIG. Since the converged images enlarged to the pitch width viewed by the left and right eyes have parallax due to the rotation of the turntable 1, the photographer can see a stereoscopic image.

[0006]

However, in the case of this conventional photographing apparatus, when the photosensitive plate 4 is rotated inside the camera 5 when photographing the subject 2, the reflected light of the subject 2 is transmitted through the lens 6 to the photosensitive plate. When the image is formed on the lens 4, the photosensitive plate 4 must be rotated within the allowable range of the depth of field of the camera 5, so that the position of the photosensitive plate 4 with respect to the image forming position of the lens 6 changes due to the rotation. Even if the depth of field is within the allowable range, the subject image to be formed includes distortion. For this reason, when the observer observes a stereoscopic photograph, there is a problem that the stereoscopic image is likely to be distorted due to distortion.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to improve such a conventional photographing apparatus, and it is an object of the present invention to improve a clear stereoscopic image with little distortion when an observer views a stereoscopic photograph. I do.

[0008]

In order to achieve the above object, a stereoscopic image photographing apparatus according to the present invention is provided with a rotating table for mounting a subject which can rotate about a vertical axis, and a rotating table for rotating the rotating table. A subject rotating device provided with a rotating means for moving the subject, and a plurality of cylindrical lenses extending vertically extending from the photosensitive surface of the photoreceptor on which the subject image from the taking lens is formed to the taking lens side. A lenticular plate is disposed so as to converge a subject image from the photographing lens on the photosensitive surface, and the lenticular plate is disposed on the photosensitive member.
It said camera having a slide mechanism for moving the one pitch horizontal direction of the cylindrical lens, and outputs a drive command signal for rotating the turntable at a predetermined angle constant speed to the subject rotating device relative to the A shutter release command signal for opening the shutter of the camera while the turntable is rotating is output to the camera, and a slide command signal for horizontally sliding the lenticular plate while the shutter is open is output to the slide mechanism. And control means for performing the control.

[0009]

According to the stereoscopic image photographing apparatus of the present invention,
A drive command signal is output from the control device to the subject rotation device,
By outputting a shutter open command signal to the camera and a slide command signal to the slide mechanism, the subject is rotated around a vertical line, the shutter is opened, and the lenticular plate is moved to the photosensitive member by the cylindrical lens. Slide horizontally by one pitch. The reflected light of the subject forms an image on the photosensitive surface of the photoreceptor via the taking lens and the lenticular plate. , A converged image having parallax is continuously exposed due to a difference in angle when observing the subject.

Therefore, the image is reproduced by developing and drying the photoreceptor, and a lenticular plate composed of cylindrical lenses having the same pitch is joined on the reproduced image of the reproduced body at the same pitch to form a cylindrical image for the right and left eyes. When the reproduction body is observed with the lens positioned so as to extend in the vertical direction, a clear three-dimensional image without distortion can be visually recognized from a wide angle.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a stereoscopic image photographing apparatus according to an embodiment of the present invention. FIG. 2 shows a stereoscopic image photographing apparatus according to an embodiment of the present invention, in which 10 is a subject, 11 is a subject rotating device, 12 is a camera having a lenticular plate slide mechanism S, and 13 is a subject. This is a control device that performs drive control of the rotation device 11 and the camera 12. The optical axis of the shooting lens 16 of the camera 12 is the turntable 11
It extends toward the subject 10 of b.

The subject rotation device 11 includes a fixed base 11a provided with casters for positioning and moving on a floor 14, and a rotating shaft (not shown) disposed in the fixed base 11a and extending vertically. A drive mechanism (not shown) including a pulse motor, a gear mechanism, and the like for driving the rotation shaft to rotate.
And a turntable 11b as a turntable attached to the upper end of the rotary shaft. The driving mechanism is a pulse motor M1 driven and controlled by the control device 13.
(See FIG. 8) and a speed reduction mechanism for reducing the driving force of the pulse motor M1. A light emitting element L1 connected to the control device 13 is provided on the periphery of the turntable 11b. The fixed base 11a has a flange portion 11c facing the lower surface of the periphery of the turntable 11b.
Are provided with light receiving elements A and B connected to the control device 13 (see FIG. 4).

The light receiving elements A and B face the rotation area of the light emitting element L1. When the light emitting element L1 passes over the light receiving elements A and B, the light from the light emitting element L1 is detected and the control unit 1 detects the light.
Transmit the light receiving signal to 3. The light receiving element A is provided at a fixed position where the turntable 11b moves at a constant speed.
Although the setting position of the light receiving element B can be set arbitrarily, in the present embodiment, the light receiving element A is
It is installed at an angle of 10 degrees. The rotation shaft is rotated by a pulse motor M1 and a reduction mechanism built in the fixed base 11a. The pulse motor M1 inside the fixed base 11a rotates at a predetermined speed based on the drive control signal from the control device 13 at a predetermined angle. In the present embodiment, the turntable 11
b performs a constant speed motion that rotates 10 degrees in 10 seconds, but the actual rotation angle is set to 10 for the start-up rotation that avoids the impact at the time of startup and makes it a constant speed motion. It is set higher than degrees.

The light receiving element A turns the turntable 11
A table start signal indicating that b has started constant speed motion is output to the control device 13. The control device 13 outputs a photographing signal for opening the shutter to the camera 12 based on the table activation signal.

A photographing lens 16 is provided at the front of the housing 15 of the camera 12.
Is attached (see Fig. 2). The taking lens 16 is provided with a lens shutter (not shown). The lens shutter is opened and closed by a shutter opening and closing device controlled by a control signal from the control device 13. A film back FB to which a film F is attached is detachably attached to a position where light from the photographing lens 16 of the camera 12 forms an image. A mounting plate 20 is provided upright in front of the mounting position of the film back FB (see FIG. 2). The mounting plate 20 has an opening 20a through which the convergent light from the photographing lens 16 passes. . Opening 20a of mounting plate 20
A pair of guide shafts 21a and 21b extending in a direction perpendicular to the optical axis of the photographing lens 16 are provided at the upper and lower portions of the camera.

The pair of guide shafts 21a and 21b constitute a part of a slide mechanism S of a frame 22 on which the lenticular plate 21 is mounted. A pair of bearings 23 and 2 slidably held by 21b
3 are provided, and the frame body 22 is slidable in the left-right direction by the bearings 23, 23. Lenticular board
The slide mechanism S of 21 is schematically constituted by a pair of bearings 21a, 21b, a frame 22, a spring 24, a cam 25, a screw screw 28, a cam 31, and a pulse motor M2. Frame 2
The lenticular plate 21 mounted on 2 is formed by connecting a large number of cylindrical lenses extending in the vertical direction in the horizontal direction, and in this embodiment, one pitch of the cylindrical lenses is
It is set to 0.4mm.

The lenticular plate 21 is oriented so that the convex surface of the cylindrical lens is located on the taking lens 16 side.
The film back FB is attached to the rear side of the frame body 22 so that the photosensitive surface of the film F can be in close contact with the film back.

Compression coil springs 24, 24 are disposed between the right end of the frame 22 and the right side wall 15a of the housing 15, and the compression coil springs 24, 24 connect the frame 22 to the left side wall of the housing 15. Fifteen
It is urged toward b side. A cam 25 is attached to the left end of the frame 22. The cam 25 has a tapered surface on the left wall 15b side of the housing 15. A scale plate 26 is attached to the lower end of the frame 22, and the scale plate 26 can be moved integrally with the slide of the frame 22. On the scale plate 26, a reticle line 26a (see FIG. 5) extending in a direction perpendicular to the sliding direction of the frame 22 is formed. The reticle line 26a transmits infrared beam light, and one pitch of a cylindrical lens of a lenticular plate 21 described later so that the light beam transmitted through the reticle line is photoelectrically converted into a pulse signal by the light receiving element C. Several tens are formed per (0.4 mm).

A bearing 27 is provided on the left side of the opening 20a of the mounting plate 20. On this bearing 27, a screw screw 28 is rotatably held. Screw screw
A nut 29 is screwed into 28, and the nut 29 is an L-shaped arm
It has 30. At the right end of the L-shaped arm 30, there is provided a cam 31 which slides up and down on a tapered surface 25a of a cam 25 provided on the frame 22. A guide plate 32 is provided at the left end of the L-shaped arm 30, and the guide plate 32 slides on a guide plate 33 fixed to the left wall portion 15b of the housing 15 and moves up and down. The lower end of the screw 28 is rotatably held by a bearing 34 attached to the horizontal wall 15c of the housing 15. The lower end of the screw 28 protrudes below the bearing 34, and the bevel gear 35
Is attached. A pulse motor M2 is provided below the horizontal plate portion 15c, and a bevel gear 36 is attached to the tip of the rotation shaft of the pulse motor M2. Bevel gear 36
Is engaged with the bevel gear 35 of the screw screw 28, rotates the screw screw 28 by the rotation of the pulse motor M2 driven by the control signal of the control device 13, moves the nut 29 up and down, and moves the frame plate 22 left and right. Let it. The pulse motor M2 is an L-shaped bracket fixed to the lower wall 15d of the housing 15.
It is attached to 37.

The horizontal plate portion 15c has a light emitting element L2 and a light receiving element C
Are provided. The light emitting element L2 and the light receiving element C are disposed to face each other, and the light emitting element L2 and the light receiving element C
The scale plate 26 of the frame 22 slides in the non-contact state. The light-emitting element L2 outputs infrared light as a beam light, and emits infrared light according to a light-emitting signal from the control device 13. When the light receiving element C is in a state where photoelectric conversion can be performed by a drive signal from the control device 13 and infrared light from the light emitting element L2 passes through the reticle line 26a of the scale plate 26 and is received by the light receiving element C, The light receiving element C outputs a pulse signal to the control device 13.

At the rear end of the housing 15, a film back FB (FIG.
2) is attached. In this embodiment, the film back F
The photosensitive surface of the film F mounted on B is a lenticular plate 2
1 and the lenticular plate 21
Slides on the photosensitive surface of the film F by one pitch of the cylindrical lens. Note that the photosensitive surface of the film F may not be in contact with the lenticular plate 21 as long as the image forming position of the light from the lenticular plate 21 is located on the photosensitive surface of the film F. The film back FB after photographing is separated from the lenticular plate 21 and the photographed film F
Is developed and dried.

As shown in the block diagram of FIG. 8, light-emitting elements L1, L2, light-receiving elements A, B, C, pulse motors M1, M2, and a shutter opening / closing device are connected to the arithmetic processing unit of the control device 13, A pulse counter for calculating the number of pulse signals from the light receiving element C is provided. In this embodiment,
The rotation speed and the number of rotations of the pulse motor M1 set in the control device 13 are set so that the turntable 11b rotates 10 degrees in 10 seconds. The rotation speed and the number of rotations of the pulse motor M2 set in the control device 13 are set so that the frame 22 moves one pitch (0.4 mm) of the cylindrical lens in 10 seconds. In the control device 13, when the power is turned on, FIG.
As shown in the flowchart, the light-emitting elements L1, L2, the light-receiving elements A, B, C, the pulse motors M1, M2, and the shutter opening / closing device start up in a drivable state, and the pulse counter becomes a measurable state.

FIG. 10 shows a pulse motor M by the controller 13.
1 is a timing chart showing the activation states of M1, shutter opening / closing device, and pulse counter. When the main switch for starting photographing is turned on after the control device 13 starts up, the light emitting element L1 is turned on and the pulse motor is turned on. M1 rotates. When the backlash of the gear mechanism is eliminated by the rotation of the pulse motor M1, the turntable
11b is a constant speed rotation motion. The constant speed rotation of the turntable 11b is detected by the light receiving element A. Immediately after the pulse motor M2 that slides the frame 22 rotates according to the detection signal of the light receiving element A, the shutter opening / closing device is driven to open the shutter, and the light emitting element L2 emits light. As a result, as shown in FIG.
The lenticular plate 21 slides in the horizontal direction during the rotation of 11b. Note that the slide direction of the turntable 11b and the lenticular plate 21 may be determined as shown in FIG. The infrared light emitted from the light emitting element L2 is reflected on the reticle groove 2 of the scale plate 26.
The light is received by the light receiving element C via 6a, and the light receiving element C transmits a light receiving signal to the pulse counter. The pulse counter calculates the number of pulse signals from the light receiving element C to determine the feed amount of the frame 22. When the pulse counter detects a predetermined number of pulse signals, the lenticular plate 21 slides in the horizontal direction by one pitch of the cylindrical lens, so that a signal to close the shutter is output to the shutter opening / closing device. When the shutter is closed, the light emitting element L2 is turned off, the pulse motor M2 is once stopped, and then reverses a predetermined number of revolutions, and the pulse counter is reset. The frame 22
Is almost synchronized with the rotation of the turntable 11b, so that when the shutter is closed, the light receiving element B detects the irradiation light of the light emitting element L1, the pulse motor M1 stops, and the turntable 11b stops.

Thus, the converged image of the object 10 is exposed on the film F of the film back FB.
Therefore, in this state, when the user takes the film back to the film back FB, takes out the film F, and develops the film F, an original photograph of a stereoscopic image is taken on the film F.

When a predetermined time has elapsed after the removal of the film back FB, the pulse motor M1 rotates reversely and the light receiving element A
Detects the light of the light emitting element L1, the pulse motor M1 is stopped, the light emitting element L1 is turned off, and the main switch is turned off.

In the stereoscopic image photographing apparatus of this embodiment, while the turntable 11b is rotating at a constant speed, the shutter of the camera 12 is opened, while the film F is fixed and the lenticular is Plate 21 at a constant speed
Since the lens is moved in the horizontal direction (horizontal direction) by the pitch, a linear converged image converged by the cylindrical lens is continuously exposed on the photosensitive surface. Therefore, this film F
After developing, fixing and drying to obtain a photograph, a lenticular plate 21 having the same pitch as that of the photograph prepared for observation so that the cylindrical lens extends in the vertical direction on the photograph and matches the pitch is aligned. When a display or the like is created by joining together, the images observed by both eyes of the observer have parallax, and the observer can visually recognize a three-dimensional image.

Since a continuous convergent image is exposed in a stepless manner during one pitch, a three-dimensional image can be seen even if an observer looks at the display from different angles. The visible angle (range) is enlarged. A similar image can be obtained even if the shutter is periodically opened and closed at a high speed within the exposure time in the embodiment.

As described above, according to the photographing apparatus of this embodiment, the lenticular plate 21 is moved in the horizontal direction during the photographing of the rotating subject, so that the subject image condensed through the photographing lens of the camera 12 Since the imaging position of is substantially unchanged,
The distortion of the converged image in the vertical direction is eliminated as in the related art, and the resulting stereoscopic image of the display becomes clear and easy to see without distortion.

[0029]

According to the three-dimensional image photographing apparatus of the present invention,
When an observer views a stereoscopic photograph, the angle at which the observer can view the stereoscopic image can be increased, and
The sharpness of the stereoscopic image viewed by the observer can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of a stereoscopic image photographing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a rear structure of the camera according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a state in which a converged image is exposed on a film when a lenticular plate slides according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a positional relationship between a light emitting element and a light receiving element of the turntable shown in FIG.

FIG. 5 is an explanatory diagram showing a positional relationship between the scale plate shown in FIG. 2, a light emitting element, and a light receiving element.

FIG. 6 is an explanatory diagram showing a relationship between a rotation direction of the turntable shown in FIG. 1 and a sliding direction of a frame.

FIG. 7 is an explanatory diagram showing a relationship between a rotation direction of the turntable shown in FIG. 1 and a sliding direction of a frame.

FIG. 8 is a block diagram of a control device according to the present embodiment.

FIG. 9 is a flowchart of the control device according to the present embodiment.

FIG. 10 is a timing chart of the control device of the present embodiment.

FIG. 11 is an explanatory diagram of a conventional stereoscopic image capturing method.

[Explanation of symbols]

 10 ... Subject 11 ... Subject rotating device 11b ... Turn table 12 ... Camera 13 ... Control device M1 ... Pulse motor S ... Slide mechanism 21 ... Lenticular plate 21a ... Guide shaft 22 ... Frame 24 ... Spring 25 ... Cam 28 ... Screw screw 31 cam 35, 36 bevel gear M2 pulse motor 26 scale plate 26a reticle groove L1, L2 light emitting element A, B, C light receiving element F film FB film back

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP 50-11436 (JP, A)

Claims (1)

(57) [Claims] An object rotating device having a rotating table for mounting a subject rotatable about a vertical axis, a rotating means for rotating the rotating table, and a subject image from a photographing lens are formed. A lenticular plate formed by serially connecting a large number of cylindrical lenses extending in the vertical direction from the photosensitive surface of the photosensitive body to be imaged to the photographing lens side is disposed so as to converge a subject image from the photographing lens on the photosensitive surface. And the lenticular plate
A camera having a slide mechanism for moving the cylindrical lens by one pitch in a horizontal direction with respect to an optical body, and outputting a drive command signal for rotating the rotary table at a predetermined angle and constant speed to the subject rotating device. Outputting to the camera a shutter release command signal for opening the shutter of the camera while the turntable is rotating, and outputting a slide command signal for horizontally sliding the lenticular plate while the shutter is open to the slide mechanism. A three-dimensional image photographing apparatus, comprising: