JP3533869B2 - Multiple image recording device and multiple image reproducing 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 multiple image recording apparatus and a multiple image reproducing apparatus for recording multiple images using a cylindrical convex lens array plate.

[0002]

2. Description of the Related Art A plurality of image information is recorded on one recording medium by using a cylindrical convex lens array plate, and a recorded recording medium in which a plurality of image information is recorded as described above. , Reproducing a plurality of image information recorded on a recorded recording medium by using a cylindrical convex lens array plate having the same configuration as the cylindrical convex lens array plate used at the time of recording is conventionally known as, for example, a stereoscopic image. It is a technical matter disclosed in the technical literature regarding the recording / reproducing apparatus, the optical card, and the like. FIGS. 9 to 12 show a cylindrical convex lens array plate as an example of a plural image information recording apparatus used when plural image information are recorded on one recording medium using the cylindrical convex lens array plate. FIG. 7 is a diagram illustrating and explaining a configuration principle of a conventional stereoscopic image recording apparatus used when recording stereoscopic image information on a photosensitive recording medium by using FIG.

Each of FIGS. 9 (a) to 12 (a) shows a plurality of images of an object photographed by a monocular camera from a plurality of different predetermined directions and viewed from individual directions in a plurality of different predetermined directions. 6 illustrates different means for obtaining an image. Also, FIGS.
2 (b) in FIG. 2 is a photographing mode as shown in each of FIGS. 9 (a) to 12 (a), and an individual image of a subject obtained by developing processing after photographing with a monocular camera (“subject Is sometimes described as "an image obtained by shooting a subject"), which is obtained by developing the image after shooting the "," in the direction of the optical axis of the shooting lens at the time of shooting the image. For projecting by a projector in which the directions of the optical axes of the projection lenses are aligned, the projected image is formed on a photosensitive recording medium provided on the focal plane of the cylindrical convex lens array plate to record a stereoscopic image. It illustrates different means.

First, FIG. 9A shows that the optical axis of the photographing lens passes through the specific point O in the plane including the specific point O in the subject 1 and the specific point described above. O
Shows a state in which a subject is photographed by a plurality of monocular cameras 2a, 2b, 2c ... Arranged so that the distances from to the exit pupil of the photographing lens are equal. Further, FIG. 9B shows the plurality of monocular cameras 2a, 2b, 2 described above.
Individual projectors 3a, 3 provided so as to correspond to the plurality of monocular cameras 2a, 2b, 2c, ...
It shows a state in which the projection images b, 3c ... Are projected to form the respective projected images on the photosensitive recording medium 5 installed on the focal plane of the cylindrical convex lens array plate 4.

Then, the photosensitive recording medium 5 described above is subjected to development processing to become a recorded photosensitive recording medium 5 on which a stereoscopic image of the subject 1 is recorded. The cylindrical convex lens array plate 4 is arranged such that the direction of its cylindrical axis is orthogonal to the plane including the optical axes of the projection lenses in the plurality of projectors 3a, 3b, 3c. The arrangement mode of the plurality of monocular cameras 2a, 2b, 2c ... Shown in (a) of FIG. 9 and (b) of FIG.
A plurality of projectors 3a, 3b, 3 shown therein
The arrangement mode of c ... Is the same, and the specific point O in the subject 1 shown in (a) of FIG. 9 and (b) of FIG.
Corresponding to O'shown therein, the distance from the exit pupil of the photographing lens to the point O is equal to the distance from the exit pupil of the projection lens to the point O '.

In the stereoscopic image recording apparatus described with reference to FIG. 9, a plurality of monocular cameras 2a, 2b, arranged in advance in a plurality of predetermined different directions in order to photograph a subject from a plurality of predetermined different directions. 2c ... and a plurality of projectors 3 arranged in the same arrangement as the arrangement of the plurality of monocular cameras 2a, 2b, 2c.
Although a, 3b, 3c ... Are used, in the stereoscopic image recording apparatus illustrated in FIGS. 9 to 12, the optical axis of the taking lens of one monocular camera 2 is a specific point O in the subject 1.
After passing through a specific point of the subject 1 in a plane including, the monocular camera 2 may be moved linearly as illustrated in FIG. As illustrated in FIG. 12A, the monocular camera 2 is moved in a curved manner, or, as illustrated in FIG. 12A, the optical axis of the photographing lens of one monocular camera 2. But,
The object 1 is rotated about the point O in a state of passing the specific point of the object 1 in a plane including the specific point O of the object 1.

As described above, a single monocular camera is used to photograph an object from a plurality of different predetermined directions,
In order to obtain a plurality of images of the subject viewed from the respective different directions in the predetermined different directions, a new photosensitive recording medium is prepared for each one of the directions in the predetermined different directions. The camera is attached to a monocular camera to take a picture. In addition, FIGS.
In the stereoscopic image recording apparatus illustrated in FIG. 1, the optical axis of the projection lens of one projector 3 is in a plane including a specific point O ′ of the focal plane of the cylindrical convex lens array plate 4,
In a state of passing through the above-mentioned specific point O ′, FIG.
11B, the projector 3 is linearly moved, or the projector 3 is curvedly moved as illustrated in FIG. 11B, or FIG.
As shown in FIG. 2B, one projector 3
When the optical axis of the projection lens of the cylindrical convex lens array lens 4 passes through the specific point specific point O ′ in the plane including the specific point O ′ of the focal plane of the cylindrical convex lens array plate 4, The array plate 4 is rotated about a cylinder axis including the O'point.

The technical matters described so far with reference to FIGS. 9 to 12 are that individual images of a subject obtained by individually photographing the subject from a plurality of predetermined different directions are used as the cylindrical convex lens array plate 4 When recording on a photosensitive recording medium installed at the position of the focal plane of, the direction of the optical axis of the projection lens of the projector should be the same as the direction of the optical axis of the monocular camera at the time of shooting the subject. A photosensitive recording medium projected onto a cylindrical convex lens array plate 4 and placed on the focal plane of the cylindrical convex lens array plate 4 to record a plurality of images when viewed from a plurality of directions of the subject. However, in each (b) of FIGS. 9 to 12, the individual images in the plurality of images when viewed from the plurality of directions of the subject projected from the projector are shown. Alternatively, if any different images are used, the recording device having the configuration shown in each of FIGS. 9 to 12B is installed at the position of the focal plane of the cylindrical convex lens array plate 4 described above. It can be easily understood that the above-mentioned recording device can record plural different image information on the photosensitive recording medium.

Then, the recorded photosensitive recording medium in which any of the different images described above are recorded is mounted on a cylindrical convex lens array plate having the same structure as the cylindrical convex lens array plate 4 used at the time of recording. Then, by irradiating it with reproduction light to reproduce the image recorded on the above-mentioned recorded photosensitive recording medium, the cylindrical convex lens array plate 4 is formed in a plane orthogonal to the cylindrical axis of the cylindrical convex lens array plate 4. By changing the angle of the line of sight to see, it is possible to view the sequential images one by one among the plurality of images recorded on the recorded photosensitive recording medium.

By the way, when reproducing a plurality of images from a recorded photosensitive recording medium, the recorded photosensitive recording medium,
Correctly setting the mutual positional relationship between the cylindrical convex lens array plate and the cylindrical convex lens array plate is not easy, especially when the number of recorded images on the recorded photosensitive recording medium is large. There has been a problem that it is extremely difficult to correctly set the mutual positional relationship between the recording medium and the cylindrical convex lens array plate. As one of the means for solving the above-mentioned problems,
Pre-recorded photosensitive recording medium and cylindrical convex lens
A film holder having a complicated mechanism for adjusting a relative positional relationship with an array plate is disclosed in Japanese Utility Model Publication No. 3-50501.

[0011]

In order to nondestructively obtain a two-dimensional figure showing a cross section of a different portion of a three-dimensional object, for example, an object is irradiated with X-rays and the object is examined. The X-ray projection data from multiple directions obtained by receiving the transmitted X-rays by the X-ray detection system is subjected to image reconstruction processing by digital calculation by a computer, and the grayscale corresponding to the X-ray absorption at each section of the subject An image, that is, a clear tomographic image of the inside of the subject is projected on the image plane of the cathode ray tube, or a clear tomographic image of the inside of the subject projected on the image plane of the cathode ray tube is photographed. There is known an X-ray CT (Computed X-ray Tomography) which can be photographed and used as a hard copy. The X-ray CT described above is capable of non-destructively obtaining a clear tomographic image of the inside of the subject, and for example, the presence of a tumor or hematoma inside the human brain can be easily known. Widely used in the medical field (In addition, a device that non-destructively obtains a clear tomographic image of the inside of the subject using ultrasound, or a microwave and ferrite The same applies to a device that nondestructively obtains a clear tomographic image of the inside of the subject by the magnetic resonance absorption phenomenon). By the way, the tomographic image photograph by the X-ray CT (two-dimensional figure of each part of the three-dimensional image) is just a two-dimensional figure in each cross section of the subject, and the photograph obtained by the X-ray CT cannot be stereoscopically viewed as it is. , A doctor obtains a tomographic image photograph of a human body by X-ray CT at a pitch of, for example, about 1 cm, and arranges a plurality of X-ray CT photographs of each cross section of the obtained human body on one surface and arranges them. A method in which a doctor assembles a three-dimensional image in his / her head by seeing a large number of tomographic images taken is generally used.
However, in the method as described above, it is necessary to see a large number of tomographic images arranged on one side over a wide area, and the doctor can grasp the three-dimensional structure in his / her head appropriately and quickly. Is becoming a problem, and a solution to it is sought.

By the way, in the plural image recording apparatus constructed according to the construction principle as described above with reference to FIGS. 9 to 12, the angle corresponding to the viewing zone angle determined by the construction mode of the cylindrical convex lens array plate 4 Within the range, each individual image of the plurality of images of the subject viewed from each individual direction in a plurality of predetermined different directions is projected by a projector, and the projected image is passed through the cylindrical convex lens array plate 4. A plurality of image information is recorded on the photosensitive recording medium 5 provided on the focal plane of the cylindrical convex lens array plate 4 described above.

However, as a projector used for projecting the above-mentioned projection image, a projection lens having a large effective aperture has been conventionally used so that a bright projection image can be projected. Therefore, a cylindrical convex lens in a plural image recording apparatus is used. A problem arises in that it is difficult to record information of a plurality of high-resolution images on the photosensitive recording medium 5 arranged on the focal plane of the array plate 4 because a widened image is generated. Was pressed. Furthermore, when reproducing a stereoscopic image from a recorded photosensitive recording medium, the mutual positional relationship between the recorded photosensitive recording medium and the multiple image reproducing lens plate in which a plurality of lenses are arranged is set correctly. It was very difficult to do,
As one of the solutions to this problem, actual fairness 3-5050
Even if the film holder disclosed in Japanese Patent No. 1 is used, the problem is that the skill level is required. Therefore, the advent of an image recording apparatus that does not have the above-mentioned problems has been desired.

[0014]

The present invention solves the above problems.
In order to make a decision, the following means 1) to 3) must be used.
It That is, 1) After shooting the images of the subject continuously,
The one projector that has the continuous shooting
Multiple convex images are sequentially projected to create a cylindrical convex lens.
An image is formed on a photosensitive recording medium placed on the focal plane of the array plate.
A multi-image recording device adapted to
A photographing means for sequentially photographing the plurality of images to obtain a plurality of images;
Of the ejector and the cylindrical convex lens array plate
Adjusting means for adjusting the installation distance, and the cylindrical convex
Photosensitive recording medium installed on the focal plane of the lens array plate
And rotate the cylindrical convex lens array plate
In order to ensure that the direction perpendicular to the projection optical axis of the projector
The vertical axis or the horizontal axis of the photosensitive recording medium.
A lens plate turntable having a rotary axis, and the project described above.
Projection lens that can change the aperture diameter of the projection lens system
A plurality of image recording devices comprising: an aperture. 2) Let φD be the effective aperture diameter of the projection lens aperture, and π be
Pi, L is recording distance, Ψ is viewing angle, N is number of recorded images
In this case, the effective aperture diameter is determined by the relationship of φD = π · L · Ψ / 180 · N.
Recording device. 3) The plural image recording device according to 1) or 2) above.
Images reproduced on a photosensitive recording medium recorded by
It is a reproducing device, and the cylindrical projection used during recording.
The same cylindrical convex lens as the lens array plate
Rotate the lay plate and the cylindrical convex lens array plate
The central axis of the photosensitive recording medium to be reproduced in order to rotate
The direction perpendicular to the normal direction of
A lens having an axis of rotation parallel to the vertical or horizontal axis of the medium
Multiple image playback characterized by a plate rotation table and
apparatus.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The specific contents of the multiple image recording apparatus of the present invention will be described in detail below with reference to the accompanying drawings.
1 and 2 are perspective views showing a schematic configuration of a plural image recording apparatus of the present invention, and 3 in the drawings is a projector. 6 is a projection lens system of the projector 3,
Reference numeral 7 denotes a diaphragm provided in the projection lens system 6 described above. 4 is a cylindrical convex lens array plate,
Reference numeral 5 is a photosensitive recording medium placed on the focal plane of the cylindrical convex lens array plate 4 described above. In the multiple image recording apparatus illustrated in FIGS. 1 and 2, FIG.
As in the case of the stereoscopic image recording device described above with reference to
With the projector 3 fixed, the cylindrical convex lens array plate 4 arranged at a predetermined distance from the projector 3 is rotated about the Y axis (in the case of FIG. 1) or the X axis (in the case of FIG. 2). The cylindrical convex lens array plate 4 is rotated by a specific angle.

The cylindrical convex lens array plate 4 in FIG. 1 is rotated by a Y-axis rotary base 11 which rotates the cylindrical convex lens array plate 4 with a vertical axis shown as the Y axis in FIG. 1 as a rotation axis. It is movably supported, and the cylindrical convex lens array plate 4 in FIG.
The horizontal axis shown as the X axis in FIG.
The cylindrical convex lens array plate 4 is rotatably supported by an X-axis rotary table 12 for rotating the array plate 4. Further, the projector 3 described above is provided with a rail 9 provided on the machine base 10.
It is attached to a pedestal 8 that can move in the Z-axis direction along with a and 9b. The distance L between the exit pupil of the projection lens system of the projector 3 and the focal plane of the cylindrical convex lens / array plate 4 (distance L between the projector 3 and the cylindrical convex lens / array plate 4) is from the projector 3 to the cylindrical convex lens. The projector 3 mounted on the pedestal 8 is mounted on the rail 9a on the machine base 10 so that the size of the image projected and formed on the surface of the array plate 4 becomes a predetermined size. It can be set at a specific position by moving in the Z-axis direction along 9b.

A rotating shaft provided on the Y-axis turntable 11 for rotating the cylindrical convex lens array plate 4 shown in FIG. 1 and the cylindrical convex lens shown in FIG. The rotation axis provided on the X-axis turntable 12 for rotating the array plate 4 is provided in a direction parallel to the cylindrical convex lens of the cylindrical convex lens array plate 4. . FIG. 3 is a diagram for explaining the outline of the recording operation of plural images in the plural image recording apparatus shown in FIG. 1. FIG. 3B is a projection lens system 6 of the projector 3.
The optical axis of (1) corresponds to the normal line of the cylindrical axis of the cylindrical convex lens array plate 4 is illustrated. The rotation axis of the cylindrical convex lens array plate 4 in the multiple image recording apparatus shown in FIG. 1 and the rotation axis of the cylindrical convex lens array plate 4 in the multiple image recording apparatus shown in FIG. As described above, both of them are provided in the direction parallel to the cylindrical lens axis in the cylindrical convex lens array plate 4, and therefore the description given with reference to FIG. It is commonly used for both the plural image recording operation in the plural image recording apparatus shown and the plural image recording operation in the plural image recording apparatus shown in FIG.

FIG. 3A shows the cylindrical convex lens array plate 4 in the state shown in FIG. 3B from the Y-axis in FIG. 1 (or the X-axis in FIG. 2). ) Is rotated counterclockwise by an angle θ (+ θ). Further, in FIG. 3C, the cylindrical convex lens array plate 4 is changed from the state shown in FIG. 3B to the Y axis in FIG. 1 (or the X axis in FIG. 2) described above. The angle θ (-
θ) is rotated.

By the way, as described above, in the plural image recording apparatus shown in FIG. 1 and the plural image recording apparatus shown in FIG. 2, the cylindrical axis of the cylindrical convex lens array plate 4 provided in each apparatus. And the direction of the rotation axis of the cylindrical convex lens array plate 4 coincide with each other. Therefore, the following description given with reference to each of the drawings starting from FIG. , Is commonly applied to both the multiple image recording apparatus shown in FIG. 1 and the multiple image recording apparatus shown in FIG. Now, in the recording operation of plural images by the plural image recording device shown in FIGS. 1 and 2, first, the image projected from the projector 3 is an image of a predetermined size on the surface of the cylindrical convex lens array plate 4. The projector 3 attached to the pedestal 8 is moved along the rails 9a and 9b provided on the machine base 10 so as to be imaged as.

After setting the projector 3 and the cylindrical convex lens array plate 4 at a predetermined distance as described above, in the plural image recording apparatus illustrated in FIG.
By rotating the cylindrical convex lens array plate 4 with the Y-axis as the center of rotation by the shaft turntable 11, (a) in FIG.
As shown in, the cylindrical convex lens array plate 4 is +
The state is rotated by θ. Further, in the plural image recording apparatus illustrated in FIG. 2, the cylindrical convex lens array plate 4 is rotated by the X-axis rotary table 12 with the X-axis as the rotation center, and as shown in FIG. As shown, the cylindrical convex lens array plate 4 is rotated by + θ. In the state where the relative positional relationship between the cylindrical convex lens array plate 4 and the projector 3 is set as described above, one image selected from a plurality of images to be recorded is displayed. Projector 3
And project from the projector 3 onto the cylindrical convex lens array plate 4. The mounting manner of the image to be projected on the projector 3 is such that the vertical direction of the image content is a cylindrical convex lens.
The cylindrical projection lens array plate 4 is projected onto the cylindrical convex lens array plate 4 in a state of being orthogonal to the direction of the cylindrical axis of the array plate 4.
The manner of mounting the images mounted on the projector 3 is the same for all of the plurality of images targeted for projection.

The image to be projected to be mounted on the projector 3 is a slide film or an image displayed on an electro-optical display element such as an active matrix liquid crystal display element. Good. When the image to be projected attached to the projector 3 is the image displayed on the active matrix liquid crystal display element, for example, a specific slice of the subject generated by a medical device such as X-ray CT is used. It is also possible to use an active matrix liquid crystal display element provided in the projector 3 in which an image to be projected from the projector 3 is displayed using the image data of the image.

As described above, after the image to be projected is attached to the projector 3, the image projected from the projector 3 is tilted by + θ as shown in FIG. 3 (a). The image is recorded on the photosensitive recording medium 5 through the cylindrical convex lens array plate 4 of FIG. Next, in the plural-image recording apparatus illustrated in FIG. 1, the cylindrical convex lens array plate 4 is rotated by the Y-axis turntable 11 in the clockwise direction (−θ direction) in order in the Y-axis at a predetermined angle. The lens is rotated about the center of movement, and after going through the state shown in FIG. 3B, the cylindrical convex lens array plate 4 is inclined by −θ as shown in FIG. 3C. However, in the state where the relative positional relationship between the cylindrical convex lens array plate 4 and the projector 3 is set at different positions as described above, the projector 3 displays a plurality of images to be recorded. Each selected one of the selected specific images is mounted and projected from the projector 3 onto the cylindrical convex lens array plate 4, and the photosensitive image is recorded via the cylindrical convex lens array plate 4. It is recorded on the recording medium 5.

Further, in the plural image recording apparatus illustrated in FIG. 2, the cylindrical convex lens array plate 4 is moved in the clockwise direction (-θ direction) by the X-axis rotary base 12 in order at a predetermined angle in the X-axis direction. Then, as shown in FIG. 3 (b), the cylindrical convex lens array plate 4 is tilted by −θ as shown in FIG. 3 (c). However, in the state where the relative positional relationship between the cylindrical convex lens array plate 4 and the projector 3 is set to different positions as described above, the projector 3 is provided with a plurality of recording targets. One selected specific image among the images is mounted and projected from the projector 3 onto the cylindrical convex lens array plate 4, and is projected through the cylindrical convex lens array plate 4. Then, the image is recorded on the photosensitive recording medium 5.

The plural images recorded on the photosensitive recording medium 5 as described above correspond to the viewing angle Ψ in the angular range of + θ to −θ, and the viewing angle Ψ is the plural images. Cylindrical convex lens array plate 4 used for recording
It depends on the configuration. Now, for example, when the viewing angle Ψ is 30 degrees, if the individual images of the subject viewed from different directions by 0.3 degrees are photographed within the viewing angle of 30 degrees, the recorded image is The number of recorded images is 101, and when the individual images of the subject viewed from different directions by 0.5 degrees are photographed within the viewing angle of 30 degrees, the number of recorded images becomes 61.

Now, the image projected from the projector 3 as described above is converted into the cylindrical convex lens array plate 4
When the image is recorded on the photosensitive recording medium 5 arranged on the focal plane of No. 2, the recording state of the image on the photosensitive recording medium 5 will be described with reference to FIG. 4 as follows. In FIG. 4A, φD is the effective aperture of the projection lens system of the projector 3, and L is the recording distance from the exit pupil of the projection lens system of the projector 3 to the focal plane of the lens of the cylindrical convex lens array plate 4. , Angle directivity β is β = φD / L (1) Equation (1) above is shown.

The above-mentioned angular directivity β is obtained when the recording distance L from the exit pupil of the projection lens system 6 of the projector 3 to the focal plane of the lens of the cylindrical convex lens array plate 4 is constant. From the equation (1), it can be seen that the larger the effective aperture φD of the projection lens system of the projector 3, the larger it becomes. When the angle directivity β is large, FIG.
As illustrated in FIG. 4B, which is an enlarged view of a part of FIG. 4A, the spread angle of the light beam from the light source becomes large, so that the image spreads, and as a result, The resolution is lowered and blurring occurs. Further, the effective diameter φD of the projection lens system of the projector 3 is kept constant, and the projector 3
If the recording distance L from the exit pupil of the projection lens system 6 to the focal plane of the lens of the cylindrical convex lens array plate 4 is increased, the angle directivity β can be reduced. The original image cannot be reproduced if the distance from the exit pupil of the taking lens of the monocular camera to the subject is different.

FIG. 4C shows the angle directivity β described above.
FIG. 6 is a diagram for explaining the relationship between the projector distance and the projector interval d. In order to minimize the influence of the spread of the angular directivity β due to the effective aperture φD of the projection lens system of the projector 3, the following is provided between the projector interval d and the effective aperture φD of the projection lens system of the projector 3. The relationship of equation (2) is required. d ≧ φD (2) Then, when the relationship of the above equation (2) is established, the maximum number of printable images N is obtained by the following equation (3). N = (π · L · Ψ / 180 · d) +1 (3) (where Ψ is the viewing angle determined by the configuration of the cylindrical convex lens / array plate 4)

Therefore, it can be understood from the equation (3) that the number N of sheets that can be recorded while minimizing the influence of the angle directivity β is determined by the effective aperture φD of the projection lens system of the projector 3. Now, the viewing angle Ψ determined by the configuration of the multiple image recording lens plate 4 used in the multiple image recording apparatus is set to 30 degrees, and the lens of the cylindrical convex lens array plate 4 is projected from the exit pupil of the projection lens system 6 of the projector 3. The distance L to the focal plane of the projector is 600 mm, and the effective aperture φD of the projection lens system of the projector 3 is usually about 30 mm.
When the maximum number of printable sheets N is calculated from the above equation (3) with 0 mm and the projector distance d of 30 mm,
The maximum number of sheets is calculated as 11 to 12.

As described above, using the plural image recording lens plate 4 having the viewing zone angle Ψ of 30 degrees, and using the ordinary projector having the effective aperture φD of the projection lens system of 30 mm, the maximum number of recorded images can be increased. When recording 11 to 12 images, the angular interval between successive images is 2.7 degrees. FIG. 5A shows a multi-image recording apparatus of the present invention in which a diaphragm 7 is provided in the projection lens system 6 of the projector 3, and the image projected from the projector 3 is focused on the focal point of the cylindrical convex lens array plate 4. FIG. 6 is a diagram illustrating and explaining a recording state of an image on the photosensitive recording medium 5 when the image is recorded on the photosensitive recording medium 5 arranged on the surface and recording is performed.

In FIG. 5A, φD is the effective aperture of the projection lens system of the projector 3, φDi is the effective aperture of the apparent projection lens system when the diaphragm 7 is provided in the projection lens system 6 of the projector 3, L is the recording distance from the exit pupil of the projection lens system of the projector 3 to the focal plane of the lens of the cylindrical convex lens array plate 4. As shown in FIG. 5A, when the diaphragm 7 is provided in the projection lens system 6 of the projector 3, the actual effective aperture of the projection lens system of the projector 3 is the diaphragm 7 in the projection lens system 6 of the projector 3. When not provided, the effective diameter of the projection lens system 6 of the projector 3 is smaller than the effective diameter φD of the apparent projection lens system φDi. Now, the recording distance L to the focal plane of the lens of the cylindrical convex lens array plate 4
Is constant, the effective aperture of the projection lens system 6 of the projector 3 changes from φD to φDi / φD = 1 /
The angle directivity β shown in the equation (1) when the effective aperture is φDi, which is in the relationship of α, has an effective aperture of φ
It becomes 1 / α of the angle directivity in the case of D.

When a diaphragm 7 is provided in the projection lens system 6 of the projector 3 as shown in FIG. 5B, which is an enlarged view of a part of FIG. As compared with the case where the diaphragm 7 is not provided in the projection lens system 6, the spread angle of the light beam from the light source is reduced, so that the spread of the image is reduced, and as a result, the resolution is improved. Therefore, as illustrated in FIG. 5C, the aperture in the projection lens system 6 of the projector 3 is smaller than the projector distance d when the aperture 7 is not provided in the projection lens system 6 of the projector 3. By providing 7, the projector distance di in the case where the effective aperture is changed from φD to φDi which has the relation of φDi / φD = 1 / α
Since it becomes easy to set di = d / α, many images can be recorded, and the resolution per image can be improved to form a plurality of high-quality images.

As is clear from the above description, there is a close relationship between the number N of recorded images and the effective aperture φD (and φDi) of the projection lens system 6 of the projector 3. By transforming the equation (3), the following equation (4) for obtaining the effective aperture φD of the projection lens system 6 of the projector 3 can be obtained. φD = (π · L · Ψ / 180 · N) and φDi = (π · L · Ψ / 180 · N) (4) For example, the configuration of the multiple image recording lens plate 4 used in the multiple image recording apparatus Is 30 degrees, the recording distance L from the exit pupil of the projection lens system 6 of the projector 3 to the focal plane of the lens of the cylindrical convex lens array plate 4 is 600 mm, and the number of recorded images is 10
When the effective diameter φDi of the projection lens system 6 of the projector 3 required when one lens is used is calculated from the above equation, it is about 3 mm.
And the effective aperture φ of the projection lens system 6 of the projector 3 required when the number of recorded images is 61.
When Di is calculated from the above equation, it becomes about 5 mm.

When the diaphragm 7 is provided in the projection lens system 6 of the projector 3 as described above, the angular directivity β can be reduced, so that recording of a plurality of images with high resolution can be facilitated, but the cylindrical convex lens is used. The photosensitive recording medium 5 placed on the focal plane of the array plate 4 has a pattern (a) in FIG.
As illustrated in FIG.
In some cases, the recording mode may be a state in which b and b are arranged at a substantially constant pitch. When the recording mode as described above occurs, the number N of recorded images and the projector aperture φDi are not related to the above formula (4), and are smaller than the projector aperture φDi of the formula (4) obtained from the number N of recorded images. This is the case when recording is performed using the projector aperture.

By the way, as shown in FIG. 6A, the recorded photosensitive recording medium in the recording mode in which the recording areas 5a and the unrecorded areas 5b are arranged at a substantially constant pitch. When the reproducing light is irradiated from the side of the recorded recording medium in FIG. 6 as shown in FIG. 6B, the above-mentioned unrecorded areas 5b, 5b ... Work as the first slits. Diffraction occurs in the reproduction light. And
The above-mentioned diffracted light is diffracted by the lens pitch in the cylindrical convex lens array plate 4, resulting in interference fringes, and only an extremely dirty image can be observed.

Therefore, in the plural image recording apparatus of the present invention,
The effective diameter φDi of the projection lens system 6 of the projector 3 is set so that the relationship of the above-mentioned formula (4) is always established.
By adjusting the diaphragm 7 to adjust the cylindrical convex lens
Photosensitive recording medium 5 placed on the focal plane of array plate 4
As shown in FIG. 6C, the recording area 5
Only a is formed and the unrecorded area 5b is not generated. As the diaphragm 7 provided in the projection lens system 6 of the projector 3 described above, a variable diaphragm is used so that it can be easily adjusted to an optimum diaphragm aperture that satisfies the above-described expression (4). It is effective. By using the variable aperture as described above, it is possible to easily record a plurality of images with optimum quality even with image data having different numbers of recorded images.

FIG. 7 is a view exemplifying the diaphragm 7 provided in the projection lens system of the projector 3, and FIG. 7A shows the circular diaphragm 7 having a diameter of Di, and FIG.
(B) shows a diaphragm 7 having a lateral length Di and a length in the direction parallel to the cylindrical axis of the cylindrical / convex lens which is larger than the above-mentioned Di. Since the cylindrical convex lens that constitutes the cylindrical convex lens array plate 4 does not exhibit a lens action in the cylindrical axis direction thereof, the diaphragm 7 that should be used in the incident light path to the cylindrical convex lens array plate 4 is a cylindrical convex lens. It is possible to use an elongated aperture stop 7 as shown in FIG. 7B, which is long in a direction parallel to the direction of the cylindrical axis. 7 (b) has an aperture area larger than that of the circular diaphragm 7 shown in FIG. 7 (a). The amount of light emitted from 7 is also large, so a bright image can be projected and the recording time can be shortened. The elongated aperture 7 described above has a shape in which the front shape is circular and is long in a direction parallel to the cylindrical axis direction of the cylindrical convex lens.
It can be implemented as an arbitrary shape within the range up to the oval shape as shown in (b) of FIG.

In the projector, the flatness of the brightness distribution in the image is generally a numerical value defined by the ambient illuminance ratio. The peripheral illuminance ratio is the ratio of the peripheral illuminance to the illuminance at the center of the projected image, and the larger the numerical value, the more uniform the brightness of the projected image. In general projectors, there are very few projectors having an illuminance ratio of 85% or more, and
It is expensive. In projectors, the peripheral illuminance ratio is being improved, but in the present situation, there is intense competition in development for improving the projection brightness in projectors. A long time ago, it was common to see the projected image of a projector in a dark room.
Recently, it is becoming more common to see the projected image of a projector in a light room to some extent, and a personal computer input compatible projector for presentations is supposed to be used in a perfect light room.
The higher brightness of the projected image tends to be prioritized over the peripheral illuminance ratio. In the plural-image recording apparatus of the present invention, in order to record an image in which the flatness of the brightness distribution in the image is good, a diffusion plate is provided between the light source in the projector 3 and the projection image for projection. The flatness of the brightness distribution in the image is improved.

As described above, when the diffusion plate is provided between the light source of the projector 3 and the projection image,
By the use of the diffusion plate described above, the amount of light supplied to the projection image is naturally reduced, and the projected image becomes dark, but by using the diffusion plate as described above,
The ambient illuminance ratio can be set to 95%, and a plurality of high-quality images can be easily recorded. As described above, the decrease in the amount of light supplied to the projection image due to the use of the diffusion plate increases the projection time of the projected image on the photosensitive recording medium 5, increases the light amount of the light source, and reduces the photosensitive recording. This can be solved without problems by using a medium having a high sensitivity as the medium 5.

When an image is reproduced from a recorded photosensitive recording medium on which a plurality of images are recorded by using the above-mentioned plural image recording device, a plurality of images are recorded on the recorded photosensitive recording medium used for reproduction. A cylindrical photosensitive lens array plate having the same structure as the cylindrical convex lens array plate 4 used for recording the recorded photosensitive recording medium on which a plurality of images to be reproduced are recorded and reproduced. By irradiating light, the image recorded on the recorded photosensitive recording medium is reproduced.

However, as described above, when the image is reproduced from the recorded photosensitive recording medium, the mutual positional relationship between the recorded photosensitive recording medium and the cylindrical convex lens array plate is properly set. It is not easy to do, especially when there are many images recorded on the recorded photosensitive recording medium, both the recorded photosensitive recording medium and the cylindrical convex lens array plate for reproduction are used. It is extremely difficult to set the mutual positional relationship correctly.

Therefore, in the plural image recording apparatus of the present invention,
As illustrated in FIGS. 8A and 8B, the positions of the cylindrical convex lens array plate 4 and the photosensitive recording medium 5 to be detachably attached to the cylindrical convex lens array plate 4 described above. And a recorded photosensitive recording medium 22 obtained by recording a plurality of images by combining both of the above
And the positional relationship with the photosensitive recording medium 5, which is the recorded photosensitive recording medium 22 to be detachably attached to the cylindrical convex lens array plate 17 used when playing back a plurality of images. The conventional problem is solved by providing a position regulating means having a configuration mode that can easily make the same.

A cylindrical convex lens array plate 4 used in the recording operation shown in FIG. 8A, and FIG.
The cylindrical convex lens array plate 4 used at the time of the reproducing operation shown in (b) is a lens plate having exactly the same configuration. Cylindrical convex lens array plate 4 used in the recording operation shown in FIG.
Two engagement pins 13 and 14 are provided in the vicinity of one end of the projection at a predetermined distance K from each other. In addition, the photosensitive recording medium 5 used at the time of recording in combination with the above-mentioned cylindrical convex lens array plate 4 in the state of being arranged on the focal plane of the above-mentioned cylindrical convex lens array plate 4 has one end portion close to it. And two engaging holes 1 at a predetermined distance K from each other.
5, 16 are drilled.

Two engaging holes 15 and 16 formed near the one end of the photosensitive recording medium 5 at a predetermined interval K are provided near the one end of the cylindrical convex lens array plate 4 described above. The hole diameter is such that two engaging pins 13 and 14 projecting at a predetermined interval K can be fitted without any play. The recorded photosensitive recording medium 22 shown in (b) of FIG. 8 is obtained by exposing the photosensitive recording medium 5 shown in (a) of FIG. 8 by the projection image information projected from the projector 3. It was obtained by performing development processing later.

Therefore, since the recorded photosensitive recording medium 22 is originally the photosensitive recording medium 5, a predetermined distance K is provided near one end of the recorded photosensitive recording medium 22. Two engagement holes 15 and 16 are formed at a distance from each other. In addition, the cylindrical convex lens array plate 1 used in the reproducing operation shown in FIG.
Reference numeral 7 denotes a cylindrical convex lens array plate 4 used in the recording operation shown in FIG. 8A as described above.
And is configured as the same configuration mode,
Two engagement pins 18 and 19 are provided in the vicinity of one end thereof so as to be spaced apart by a predetermined distance K.

The two projections, which are provided near the one end of the cylindrical convex lens array plate 4 used in the recording operation shown in FIG. Two pins projecting at a predetermined interval K near the coupling pins 13 and 14 and one end of the cylindrical convex lens array plate 17 used in the reproducing operation shown in FIG. 8B. The engagement pins 18 and 19 are provided in exactly the same arrangement mode with respect to each of the cylindrical convex lens array plates 4 and 17 which have the same configuration mode. Then, the recorded photosensitive recording medium 2 is attached to the two engaging pins 18 and 19 projecting at a predetermined distance K near one end of the cylindrical convex lens array plate 17.
The recorded photosensitive recording medium 22 is formed into a cylindrical convex lens array plate 17 by fitting two engaging holes 15 and 16 which are formed at a predetermined distance K near one end of 2. On the other hand, it can be mounted accurately.

The arrangement of the two engaging pins 13 and 14 projecting at a predetermined distance K near one end of the cylindrical convex lens array plate 4 used during the recording operation, and the reproduction. As described above, the arrangement of the two engaging pins 18 and 19 projecting at a predetermined interval K near one end of the cylindrical convex lens array plate 17 used during operation is completely different from that described above. Although the same arrangement mode is adopted, the two engaging pins 13, 14, 18, 1 of both of the above are provided.
The position of the intermediate point of the predetermined interval K in 9 is set to 2 as described above.
The two engaging pins 13, 14, 18, 19 are arranged so as to be displaced from the center position in the lateral direction of the lens plates 4, 17 which are to be projected, respectively. When the configuration is such that 14, 18, 19 are provided on the cylindrical convex lens array plates 4, 17, the photosensitive recording medium 5 and the recorded photosensitive recording medium 22 are mounted on the cylindrical convex lens array plates 4, 17 in the correct mounting state. Simply, the photosensitive convex recording medium 5 and the recorded photosensitive recording medium 22 are automatically in the correct relationship, and the cylindrical convex lens array plate 4,
The photosensitive recording medium 5
Also, when the recorded photosensitive recording medium 22 is mounted on the cylindrical convex lens array plates 4 and 17, it is possible to save the trouble of discriminating between the front and back of the photosensitive recording medium 5 and the recorded photosensitive recording medium 22.

In the state in which the recorded photosensitive recording medium 22 is combined with the cylindrical convex lens array plate 17 for image reproduction in which a plurality of lenses are arranged as described above, the image recording device (viewer) is used. ), And the image observation apparatus is rotated by a predetermined angle with the cylindrical axis of the cylindrical convex lens array plate 17 as a rotation axis,
Each one of the plurality of images recorded on the recorded photosensitive recording medium 22 can be sequentially observed as if the pages of the book are turned. Examples of the plural-image observing device described above include, for example, a member in which a peripheral portion of a combined state of the recorded photosensitive recording medium 22 with the cylindrical convex lens array plate 17 can be engaged, a diffusion plate, and a light source. It is possible to use a container configured by including and. Then, a light source (for example, a fluorescent lamp) is provided on the back side of the recorded photosensitive recording medium 22 in a state in which the recorded photosensitive recording medium 22 is combined with the cylindrical convex lens array plate 17 mounted on the multiple image observation apparatus. When the illumination light emitted from the tube is supplied through the diffusion plate, in the visual field on the front surface of the cylindrical convex lens array plate 17 in which a plurality of lenses are arranged, the recorded photosensitive recording medium 22 is recorded as described above. One of each of the multiple images recorded in
You can observe them one after another as if you were turning the pages of a book.

[0048]

As is clear from the above description, in the plural-image recording apparatus of the present invention, the provision of the diaphragm in the projection lens system of the projector can prevent the resolution of the recorded image from being lowered. In addition, the number of recorded images can be increased, good recording operation can be performed under conditions suitable for the number of recorded images, and it is easy to prevent moire due to interference between the recorded image and the lens pitch. Further, it is possible to perform a recording operation adapted to different numbers of recorded images. The multiple image reproducing device of the present invention can easily and quickly mount the recorded photosensitive recording medium on which a plurality of images are recorded by the multiple image recording device of the present invention to the cylindrical convex lens array plate. is there. Further, if a plurality of tomographic image photographs (two-dimensional figures of each part of a stereoscopic image) obtained by X-ray CT obtained at a pitch of about 1 cm are recorded by the plural image recording apparatus of the present invention, the recorded photosensitive recording medium 22 is recorded. Since the doctor can sequentially observe a large number of tomographic images recorded in, as if turning pages of a book, the doctor can accurately and swiftly and three-dimensionally in his head. Since the structure can be grasped, the present invention can favorably solve the conventional problems.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an example of a multiple image recording apparatus of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of an example of a multiple image recording apparatus of the present invention.

FIG. 3 is a diagram for explaining a recording operation of the multiple image recording apparatus.

FIG. 4 is a diagram for explaining a recording operation of the multiple image recording apparatus.

FIG. 5 is a diagram for explaining a recording operation of the multiple image recording apparatus.

FIG. 6 is a diagram for explaining a recording operation of the multiple image recording apparatus.

FIG. 7 is a diagram showing a configuration example of a diaphragm.

FIG. 8 is a diagram for explaining an engaging unit between a lens plate and a photosensitive recording medium.

FIG. 9 is a diagram for explaining a recording operation of the stereoscopic image recording apparatus.

FIG. 10 is a diagram for explaining a recording operation of the stereoscopic image recording apparatus.

FIG. 11 is a diagram for explaining a recording operation of the stereoscopic image recording apparatus.

FIG. 12 is a diagram for explaining a recording operation of the stereoscopic image recording apparatus.

[Explanation of symbols]

1 ... Subject, 2 ... Monocular camera, 3 ... Projector, 4,
Reference numeral 17 ... Cylindrical convex lens array plate, 5 ... Photosensitive recording medium, 6 ... Projection lens system, 7 ... Aperture, 13, 14,
18, 19 ... Engagement pin, 15, 16 ... Engagement hole, 22 ... Recorded photosensitive recording medium,

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-3-186833 (JP, A) JP-A-53-66229 (JP, A) JP-A-4-56849 (JP, A) JP-B-40- 9954 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 35/00 A61B 6/03 360 G03B 35/08

Claims (3)

(57) [Claims] 1. A method for continuously projecting images of a subject and then projecting the images.
With one projector having a lens,
Multiple images taken by
Photosensitive recording medium placed on the focal plane of the lens array plate
A plurality of image recording devices adapted to form images on a plurality of images, the photographing means obtaining a plurality of images by sequentially photographing the subject.
And the projector and the cylindrical convex lens array.
(B) Adjusting means for adjusting the installation distance from the plate, and installed on the focal plane of the cylindrical convex lens array plate
The photosensitive recording medium and the cylindrical convex lens array plate are rotated.
In the direction perpendicular to the projection optical axis of the projector.
Parallel to the vertical or horizontal axis of the photosensitive recording medium
A lens plate rotation table having a rotation axis and a diaphragm diameter of a projection lens system of the projector can be changed.
A plurality of image recording devices, comprising: 2. An effective aperture diameter of the projection lens aperture is φD.
, Pi is the circular constant, L is the recording distance, Ψ is the viewing angle, and N is recorded.
The plurality of images according to claim 1 , wherein, when the number of images is set, the effective aperture diameter is determined by a relationship of φD = π · L · Ψ / 180 · N.
Image recording device. 3. A plurality of images according to claim 1 or 2.
A device for reproducing a photosensitive recording medium recorded by a recording device.
It is a multi-image reproducing device, and the cylindrical convex lens array plate used for recording
The same cylindrical convex lens array plate and the cylindrical convex lens array plate are rotated.
Direction of the center axis of the photosensitive recording medium to be reproduced.
The vertical direction to the vertical axis of the photosensitive recording medium
Alternatively, a lens plate turntable having a rotation axis parallel to the horizontal axis
And a multi-image reproduction device.