JP2790386B2 - Main subject alignment method for stereoscopic picture projection and stereoscopic picture printing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of aligning a main subject in a lenticular stereoscopic image projection method, and an accurate main subject can be adjusted by an easy operation.
The present invention relates to a three-dimensional photoprinting apparatus capable of forming an appropriate three-dimensional image (video) and having a simple structure.

[0002]

2. Description of the Related Art A three-dimensional image (video) using a lenticular photosensitive material comprising a lenticular sheet and a photosensitive material.
Are known. In such a three-dimensional image formation, for example, as in a two-lens system shown in FIG. 24, a left-right perspective is different through a projection lens B ₁ or B _{2 on} a lenticular photosensitive material F having a photosensitive layer D provided on the back surface of a lenticular sheet C. The obtained image information (original image), that is, left and right images A ₁ and A ₂ are projected, decomposed into linear image elements, and recorded (printed). The lenticular photosensitive material F, on which the image is projected and recorded on the photosensitive layer D, is viewed through the lenticular sheet C of the lenticular photosensitive material F with the left and right eyes L and R as shown in FIG. Is stereoscopically viewed. However, in this method, the positions of both eyes where stereoscopic vision can be obtained are extremely limited, and if it is outside of this range, a sharp decrease in optical density (hereinafter simply referred to as “density”) occurs, and the stereoscopic effect is reduced.

It is known that such disadvantages can be improved by increasing the line width of a linear image element by a lenticular sheet by an appropriate amount. For example, in such a two-lens type stereoscopic image forming method, Japanese Patent Publication No. 49-607 discloses a method of enlarging the width of a line image by moving a photosensitive material and a projection lens in the same direction at a predetermined speed ratio. However, Japanese Patent Publication No. 53-33847 discloses a method of swinging a lenticular photosensitive material at a predetermined angle around a generatrix of a lens at the center thereof.
Japanese Patent Application Laid-Open Publication No. H11-157, respectively, discloses a method in which a cover that changes the refractive power of a lenticular lens as a whole is laminated on the surface of a lenticular photosensitive material and recording is performed in a state where the line width of an image element is widened.

Further, as a method of forming a higher quality stereoscopic image, a method of forming a stereoscopic image using three or more original images is known. For example, Japanese Patent Publication No. 58-7981 discloses a method.
Photosensitivity of a lenticular photosensitive material having a pitch W through N projection lenses arranged at predetermined intervals and capable of changing the angle of projection of N two-dimensional images arranged at predetermined intervals. There is disclosed a method of forming a three-dimensional image by projecting onto a layer and forming N uniformly focused light-collected images within a pitch of a lenticular photosensitive material.

By the way, in an original image obtained from a plurality of different viewpoints, as shown in FIG. 26, in accordance with a change in the distance of the subject, the image of the subject at each depth position is shifted along the optical axis of each camera lens. It is recorded at a more shifted position. Further, the amount of the deviation is related to the distance between the photographing lenses, and can be expressed by the following equation, as disclosed in the above-mentioned Japanese Patent Publication No. 58-7981. _{e = kf / (kf t)} (1) k `= se / k = sf t / (kf t) (2) a` = se / a = (k / a) k `(3) b ｀ = se / b = (k / b) k ｀ (4) [In each of the above expressions, _ft is the focal length of the photographing lens 100; a, b, and k are the subject A from the center line 102 of the photographing lens 100, respectively. , B and K;
a ｀, b ｀ and k ｀ are respectively the film plane 104
From the axis 106 along to the images A ｀, B ｀ and K ｀, respectively. ]

Therefore, in order to project and record an original image obtained from a plurality of different viewpoints on a lenticular photosensitive material to obtain an appropriate three-dimensional image, a main subject that is recorded with a slight shift on each original image is required. Lenticular photosensitive material for images
(Lenticular sheet) , it is necessary to form a sharp image with no deviation for the main subject. However, in a conventional apparatus using a lenticular photosensitive material, there is a problem that the main subject cannot be easily and suitably adjusted.

[0007]

[Problems to be solved by the invention] For example,
9-607, JP-B-53-33847 and JP-B-49-25902 do not disclose a specific method for adjusting the main subject. The main subject alignment of the projected image is left to the skill of the operator, and a skilled operator cannot form a suitable three-dimensional image.

[0008] In addition, Japanese Patent Publication No. Sho 5 to apply three or more original images.
In the three-dimensional image forming apparatus disclosed in Japanese Patent Application Laid-Open No. 8-7981, alignment of a main subject is more important, but in the above-mentioned publication, there is a description regarding the displacement of a subject on each original image. Along with the complexity of the apparatus due to the application of the image, the alignment of the main subject becomes more difficult, and the apparatus disclosed in the above publication has no suitable means for solving this.

Japanese Patent Application Laid-Open No. 2-248943 discloses a subject distance at the time of photographing an original image, an interval between respective photographing lenses,
The distance of the main subject between adjacent original images is calculated based on the focal length of the photographing lens, and the moving distance (feed pitch) of the original image is set according to the obtained distance of the main subject. There is disclosed an apparatus for printing a stereoscopic photograph in which projected images of a plurality of original images are recorded on a lenticular photosensitive material by moving the image.

However, since this apparatus needs to change the feed pitch for each original image and perform printing, the control of the printing operation and the apparatus become complicated, and the printing efficiency is poor. There is a point.

An object of the present invention is to solve the above-mentioned problems of the prior art, and record original images obtained from a plurality of different viewpoints on an image storage medium or display medium such as a photosensitive material via a lenticular sheet. The main subject alignment method of stereoscopic image projection that enables accurate main subject alignment with easy operation in lenticular type stereoscopic image projection (burn-in). It is an object of the present invention to provide a three-dimensional photo printing apparatus which can form an image (video) and has a simple structure.

[0012]

According to a first aspect of the present invention, there is provided a method for aligning a main subject in a three-dimensional image projection method, comprising: obtaining a light flux from an original image obtained from three or more different viewpoints; The light is made incident on the projection lens, and the optical path of the light beam that has passed through the projection lens is changed by a mirror optical system for each original image, and each light beam is made incident on the lenticular sheet at a predetermined angle to form a plurality of linear image elements. When projecting onto an image element storage medium or a display medium, a projection medium is arranged at a position corresponding to the lenticular sheet, and the contrast of the projected image obtained on the projection medium is measured. Adjusting the main path of each original image on the lenticular sheet by adjusting the optical path of each light beam by the mirror optical system so that It is characterized by.

Here, the projection medium is a contrast cell.
Image contrast of this contrast sensor
The mirror optical system controls each
It is preferable to adjust the optical path of the light beam.

The projection medium is a screen.
And the projected image formed on the screen is read photoelectrically.
And show it on the display, and show it on this display.
The projected image shown is measured by a contrast sensor,
So that the measured image contrast signal is maximized.
It is preferable to adjust the optical path of each light beam by mirror optics.
New

[0015] Further, a stereoscopic picture projection according to the first aspect of the present invention.
Of the main subject can be obtained from three or more different viewpoints.
The luminous flux from the original image is incident on the projection lens,
The light path of the light beam that has passed through the projection lens is mirror light for each original image.
Change each luminous flux by lenticular sheet
At a predetermined angle, and a plurality of linear image elements
When projecting on an image element storage medium or display medium as
And, that from the imaging interval of photographing distance and the original images of the three or more original images, and calculates the deviation of the main object on the original image, to adjust the optical path of the light beams by the mirror optical system accordingly The main image of each original image in the projected image
It is characterized by subject matching.

[0016]

Further, in a stereoscopic printing apparatus according to a second aspect of the present invention, the original images from three or more different viewpoints are respectively converted into a plurality of linear image elements via a lenticular sheet,
A three-dimensional photographic printing apparatus for printing on a photosensitive material disposed on the back side of a lenticular sheet, a printing light source, film holding means for holding a film carrying a plurality of original images, and original image information transmitted through the film. At least one projection lens for forming projection light of each of the original images on the photosensitive material, at least one mirror for changing an optical path of the projection light passing through the projection lens, and at least one of the mirrors. A mirror optical system having a mirror angle adjustment mechanism for the mirror, holding means for holding the lenticular sheet and the photosensitive material at predetermined positions, and a mirror element disposed at least at a main subject position of the original image on a surface corresponding to the lenticular sheet. A contrast sensor that can be freely adjusted, and the contrast sensor is printed before printing the original image on the photosensitive material. Then, the projection light of this original image was formed into an image, and the angle of the mirror was adjusted by the angle adjusting mechanism so that the image contrast signal of the contrast sensor was maximized. Thereafter, printing is performed on the photosensitive material via the lenticular sheet.

Further, in the stereoscopic printing apparatus according to the second aspect of the present invention, the original images from three or more different viewpoints are respectively converted into a plurality of linear image elements via a lenticular sheet,
A three-dimensional photographic printing apparatus for printing on a photosensitive material disposed on the back side of a lenticular sheet, a printing light source, film holding means for holding a film carrying a plurality of original images, and original image information transmitted through the film. At least one projection lens for forming projection light of each of the original images on the photosensitive material, at least one mirror for changing an optical path of the projection light passing through the projection lens, and at least one of the mirrors. A mirror optical system having a mirror angle adjustment mechanism for the mirror, holding means for holding the lenticular sheet and the photosensitive material at predetermined positions, and a mirror element disposed at least at a main subject position of the original image on a surface corresponding to the lenticular sheet. A screen that can be freely adjusted,
Before printing the original image on the photosensitive material, the projection light of the original image is formed on the screen, the projected image is read photoelectrically and displayed as a reproduced image, and the main subject is displayed on the reproduced image. A display for setting, and a contrast sensor that moves to a position of the main subject set on the display in conjunction with the setting of the main subject, so that an image contrast signal of the contrast sensor is maximized. After the angle of the mirror is adjusted by the angle adjusting mechanism so that the main subject of each of the original images coincides, printing is performed on the photosensitive material via the lenticular sheet.

Further , according to the second aspect of the present invention, there is provided a three-dimensional photographic printing method.
The device lenticulates original images from three or more different perspectives.
Into a plurality of linear image elements via the color sheet,
Burn the photosensitive material on the back side of the lenticular sheet.
A three-dimensional photographic printing apparatus attaching come, and baking the light source, a plurality
Holding hand holding film carrying original image of
Step and each original having original image information transmitted through the film.
At least one for imaging the projection light of an image on the photosensitive material
And the light of the projection light passing through the projection lens
At least one mirror for changing the path, and said mirror
Microphone that has an angle adjustment mechanism
Optical system, lenticular sheet and photosensitive material
Holding means for holding the material at a predetermined position, and based on the shooting distance of the three or more original images and the shooting interval of each original image,
Calculating a deviation of the main object on the original image, after adjusting the angle of the mirror I by the angle adjustment mechanism as the main subject of the original image in accordance with the deviation matches the
Printing on photosensitive material through a lenticular sheet
And features .

Further , in each embodiment of the second aspect of the present invention,
It is preferable that the mirror angle adjusting mechanism includes a plurality of actuators disposed at predetermined positions of the respective mirrors, and a control device for controlling the actuators.

[0021]

The present invention relates to three-dimensional image projection and printing using a lenticular sheet, and a projection medium obtained by arranging a projection medium such as a screen or a contact sensor at a position corresponding to the lenticular sheet. Measure the contrast of the image directly or indirectly, and measure the contrast value or from three or more different viewpoints
The angle of the mirror that adjusts the optical path of the luminous flux of each original image is adjusted according to the shooting distance of the original image and the shooting interval of each original image, and the main subject of the original image is aligned.

That is, in the present invention, before projecting a three-dimensional image on the image element storage medium and the image element display medium,
Alternatively, projection of a three-dimensional image on a lenticular photosensitive material
Before printing, a contrast sensor is directly arranged as a projection medium for projecting a projected image of each original image , which can be freely arranged at a position corresponding to a lenticular sheet (lenticular photosensitive material). A projected image is obtained by arranging a contrast sensor or a screen at the position of the main subject on the top, and by visually observing the obtained projected image, a screen is displayed at the position of the main subject on the projected image.
A contrast sensor that can move on the screen
Alternatively, the obtained projected image is reproduced on a display, and a contrast sensor movable on the display is arranged at the position of the main subject on the reproduced projected image to obtain an image contrast output signal. Based on the contrast output signal, the angle of a mirror arranged in a mirror optical system for adjusting the optical path of each original image is adjusted, and the main subject of each original image is adjusted.

In another embodiment of the present aspect, the deviation of the position of the main subject in the original image is calculated from the photographing distance of the original image and the distance between the photographing lenses at the time of photographing the original image. The main subject of each original image is adjusted by adjusting the angle of the mirror of the optical system.

According to the present invention, the contrast of the projected image of the original image projected on the screen or the contrast sensor is measured, and the contrast is measured according to the measured contrast value or from the photographing data of the original image. In the original image
Of the main subject position is calculated, and the calculated
Accordingly, by adjusting the angle of the mirror that adjusts the optical path of the original image, the main subject of the original image can be matched with the lenticular sheet on the image projection surface, and a sharp image can be formed without shifting the main subject. It is possible to form a high quality stereoscopic photograph.

In addition, the main subject can be adjusted simply by adjusting the angle of the mirror in the optical path of each original image according to the contrast of the actual projected image obtained from the original image or according to the photographing data of the original image. Therefore, the operation of adjusting the main subject can be simplified, and the apparatus configuration can be simplified.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a stereoscopic picture projection method and a stereoscopic picture printing apparatus according to the present invention.

According to the three-dimensional image projection method and the three-dimensional image printing apparatus of the present invention, a light flux from an original image obtained from three or more different viewpoints is converted into a plurality of linear image elements via a lenticular sheet as an image element storage medium. Alternatively, a three-dimensional image is obtained by projecting the image on an image display medium and recording an image on a photosensitive material (printing) or recording an image on a solid-state imaging device such as a CCD.

The lenticular sheet has a plurality of cylindrical lenses (lenticular lens) integrally formed, a plurality of cylindrical lenses on the upper surface, a flat bottom surface, and refraction only in the width direction of the lenticular. It has power. The present invention records a stereoscopic image on an image element storage medium or an image display medium via such a lenticular sheet.

The image element storage medium applied to the present invention includes a photographic photosensitive material, an electronic photoreceptor, and other magnetic recording media and optical storage media. This is temporarily stored, and the stored image is indirectly used for various stereoscopically viewable media. For example, when an electronic photoconductor (solid-state imaging device) such as a CCD is used, the photoconductor receives a line image and sends it as a video signal.
The image is reproduced on an RT or the like, and a lenticular sheet corresponding to the image size is attached on the CRT screen on the CRT, and the screen emitted by the projected fluorescent element can be viewed stereoscopically by looking through the lenticular sheet. Typical examples of the image element display medium include a medium using a diffusion plate, a screen, a Fresnel lens, a reflection mirror, and a double lenticular screen combined with a lenticular sheet.

In the following, as an embodiment of the present invention, a three-dimensional object is photographed as a large number of two-dimensional images from three or more different photographing points, and then this two-dimensional image is passed through a lenticular photosensitive material as a lenticular screen for construction. A case will be described in which the present invention is applied to an indirect three-dimensional photography method that forms a three-dimensional image by projecting images.

As shown in FIG. 1, the subject 5
1 from three different viewpoints 53 ₁ , 53 ₂ , 53
Original film through ₃ more for stereoscopic photographs by (photosensitive material) of 3 eye can be photographed to 55 camera 57 to obtain the three original 13 _1, 13 _2, 13 ₃ in this case.

An optical system for exposing a lenticular photosensitive material for three-dimensional photography having a photosensitive layer on the back surface from a film having an original image photographed from three different viewpoints will be described below. Note that, in this case,
The film on which the original images have been printed has three original images 1
Exposure may be performed separately from each of 3 ₁ , 13 ₂ , and 13 _{3. In} this case, the three original images are not separated,
It is assumed that they are continuously arranged on the film. This is practical because the film can be printed without any processing on a film taken by a general user.

FIG. 2 shows an example of a three-dimensional photographic printing apparatus according to the present invention. The three-dimensional printing apparatus (hereinafter referred to as a printing apparatus) according to the present invention shown in FIG.
A condenser lens 12; and a film holder 30 for holding a plurality of, in the illustrated example, three original images 13; 13 ₁ , 13 ₂ , and 13 ₃ at predetermined positions, photographed from different viewpoints obtained by the above-described camera. A mask 23 for masking each original image as required, a mask driving means 22 for moving the mask 23, one projection lens 14 common to the three original images, and a different optical path for each original image, A mirror optical system 15 that can be adjusted to have a predetermined incident angle on the lenticular photosensitive material 18, a photosensitive material holding table 31 that holds the lenticular photosensitive material 18 having a photosensitive layer 20 on the back surface of the lenticular sheet 19 at a predetermined position, Consists of

The light source 11 is a white light source, such as a halogen lamp. Condenser lens 12
Is a method of condensing divergent light from the light source 11 and irradiating the original image with almost parallel light, which has an advantage of increasing the contrast. However, the diffused light is obtained by using a mirror box instead of the condenser lens. It is also possible to irradiate the original image so that a pinhole or the like of each original image is not projected and exposed on the photosensitive material.

The film holder 30 carries, for example, a negative or positive type film in which the original images obtained as described above are continuously formed, and is at a fixed distance from the optical system and the lenticular photosensitive material 18. keep. The film holder 30 can also be conveyed using a known feed mechanism such as a motor and a cam, a solenoid and a rod, or a spring and a hook charged in a film feeding step.

The mask 23 is made of, for example, a plate-like rigid metal or plastic material in which a predetermined mask pattern is opened in the frame shape of the original image. The end of the mask 23 is movably supported by the mask driving device 22, and can be moved in parallel on a plane on which the mask 23 extends under the control of the mask driving device 22.
The mask driving device 22 is composed of a combination of known mechanisms such as a motor and a cam, a solenoid and a rod, or a spring and a hook charged in a film feeding process.

The projection lens 14 is arranged so that the projection light of each original image is substantially focused in the lenticular photosensitive material 18.
A convex lens having a predetermined focal length or a combination lens for removing a predetermined aberration is selected. Preferably, the projection lens is movable in the direction of the optical axis so that the focus of the entire original image can be adjusted. Furthermore, a projection lens 1
4 or before or between the projection lens 14 and the combination lens when the projection lens 14 is a combination lens, an aperture, not shown, prevents flare of an image to be projected and allows a sharp image to be formed on a photosensitive material. It is desirable because it can be projected.

The light flux of the projection light of each original image that has passed through the projection lens 14 then enters the mirror optical system 15. In the illustrated example, the mirror optical system 15 changes the optical path for each original image (its projection light), and changes the lenticular photosensitive material 1.
The optical path length up to 8 is adjusted to be the same, and the main subject of each original image is adjusted to the lenticular photosensitive material 18 (lenticular
Lenticular light-sensitive material to match with preparative 19) 18
And adjusts the lenticular photosensitive material 18 so as to have a predetermined incident angle.

The mirror optical system 15 separates the light flux of the projection light including the image information transmitted through the original image formed on the negative or positive film into a light flux including the image information for each original image pixel. the first mirror 16 to the main object adjustment of the original; 16 _1, 16 _2, 16 _3, that can be deformed by the electric field such as a piezoelectric element is disposed in each predetermined position of the rear surface of the first mirror 16 A deformation element is provided,
The deforming element is deformed by a control device (not shown),
An angle adjusting means 41 for finely adjusting the angle of the first mirror 16 carried by these deforming elements; a light beam corresponding to each separated original image is made incident on the lenticular photosensitive material 18 at a predetermined incident angle; Second mirrors 17 ₁ , 17 ₂ , 17 ₃ for adjusting the optical path length to the same photosensitive layer 20 of the lenticular photosensitive material 18 of FIG.
And In the printing apparatus of the illustrated example, the luminous flux of each original image transmitted through the projection lens 14 is reflected in a predetermined direction by a corresponding first mirror 16 and then by a second mirror 17, and the lenticular photosensitive material is formed at a predetermined angle. 18 is incident.

However, in FIG.
_Since the first mirror 16 ₂ and the second mirror 17 ₂ corresponding to the central light beam corresponding to the projection light from ₂ are arranged on the front (or back) side in the direction perpendicular to the paper surface, Illustration is omitted for simplification. Original image 13 in the center
₂ will be described in the next stage with reference to FIG.

The arrangement of the mirror optical system 15 in the optical path of the left-right direction along the film surface of the mirror optical system 15, in consideration of the space of the first mirror 16 corresponding to the original image 13 ₁ as shown in FIG. 2 _{1 1} and and the second mirror 17,
The arrangement of the first mirror 16 ₃ and the second mirror 17 ₃ corresponding to the original image 13 _3, perpendicular to the generatrix of the lenticular light-sensitive material 18, the optical axis of the entire optical system (an optical axis perpendicular to the center of the original) O May be arranged symmetrically to each other, but as shown in FIG. This arrangement has the advantage that the space can be reduced.

Changing the optical path by the mirror optical system as in the printing apparatus in the illustrated example results in extending the optical path length. Using FIG. 3 as an example, mirror images of the original images 13 ₁ and 13 ₃ in this case are shown by reference numerals 13 ₁ ′ _and 13 ₃ ′, respectively. In the illustrated mirror optical system, the first and third original images 13 ₁ , 13 ₁ ,
Light beam containing image information from the 13 _3, a first mirror 16
_1, 16 ₃ and the second mirror 17 _1, 17 through the _third mirror lenticular light-sensitive material 18 to the projection lens 14 ₂
Are projected symmetrically to the optical axis at an angle of 2θ with respect to the optical axis. In FIG. 3, the lenticular photosensitive material 1
8 is omitted, and the photosensitive layer 2 is omitted.
0 is indicated by a simplified line.

Next, referring to FIG.
3_TwoWill be described. In the illustrated example,
The focal position of the luminous flux of all the original images is
Adjustment, so that the optical path length is equal to other original images,
Two mirrors 16 for adjusting the optical path_Two, 17_TwoUsing
Original image 13₁And 13_ThreePlane defined by the center of the luminous flux
After changing the optical path almost perpendicular to the
The light path is changed in the direction of the light-sensitive material 18 so that the light beam is incident.
ing. Therefore, in the illustrated example, the mirror optical system 15
Two mirrors 16 arranged at _Two, 17_TwoAlmost light between
The optical path can be extended by the length of the path.

In this case, the luminous flux of the projection light is incident at a predetermined incident angle γ with respect to a perpendicular to the photosensitive layer 20 of the lenticular photosensitive material 18. This causes the image plane to be misaligned, but the image plane can be eliminated by mirror adjustment. However, trapezoidal distortion due to the tilt of the image surface remains. If the incident angle γ is sufficiently small, this distortion does not actually occur in the obtained stereoscopic image. Further, if a degree of the angle of incidence γ will not be ignored, by placing a wedge-shaped prism immediately after the original image 13 _2, lenticular photosensitive material 1
8 can be corrected for the inclination of the image plane of the image incident on the surface 8.

[0045] Alternatively, as shown in FIG. 5, using four mirrors of the mirror optical system in total, by diverting the U-shaped optical path of the projection, Akimitsu from the original image 13 _2, the optical path length By extending the length, it is possible to make the optical path length of the projection light from another original image equal to the optical path length and to make the incident angle γ to the lenticular photosensitive material 18 zero.

In the printing apparatus shown in the figure, the first mirror 16 of the mirror optical system 15 has an angle adjusting means for adjusting the angle of the first mirror 16 and adjusting the main subject of the original image. Having. The first as shown in FIG.
Angular adjustment means 41 composed of an actuator (displacement element) such as a piezoelectric element, an electrostrictive element, a voice coil motor, or an ultrasonic motor disposed on the back surface of the mirror 16; 16 ₁ , 16 ₂ , 16 ₃ Fine adjustment of the first mirror 16 is performed by appropriate voltage control by a control device that does not perform the operation. For example, first, the angle of the mirror 16 ₂ is adjusted using the original image 13 ₂ as a reference image to determine the image composition, and then the two images are determined. The angles of the mirrors 16 ₁ and 16 ₃ are sequentially adjusted to obtain the original image 13.
The projection image of ₁ and 13 ₃ is adjusted in accordance with the original image 13 _2. Therefore, the first mirror 16 corresponding to the reference image may not require the angle adjusting means 41.

One embodiment of the angle adjusting means 41 is shown in FIGS. The angle adjusting means 41 in the illustrated example pivotally supports the first mirror 16 at one point (point A) at the center of the mirror.
This is a two-point drive type in which two appropriate points (points B and C) of the first mirror 16 are driven by an actuator. The first mirror 16 includes a mirror part and a support part.

First, a point A where the center of the mirror (the center of the light beam transmitted to the second mirror) is reflected is pivotally supported by the pivot support 43 from the back side of the mirror. First mirror 1
The actuator 45; 45 ₁ , 4
5 ₂ arranged from the back side of the mirror so as to abut. Further, the first mirror 16 is always urged in the direction of the support table 47 by an urging member (not shown) such as a spring in the triangle formed by the points A, B and C. The position where the urging member is arranged is indicated by a point D in FIG. 6, for example. Point A,
It is preferable to provide an urging member at the position of the center of gravity of the triangle formed by B and C.

Actuator 45 provided at points B and C
It is assumed that a small linear displacement such as a piezoelectric element or a voice coil type actuator can be performed. For example, an apparatus as shown in FIG. 7 is an example. This device comprises a rod 61; 6 which abuts against the back of the first mirror 16;
1 _1, 61 _2, to support the rod 61, rod 6 by its deformation
Piezoelectric element 63 for displacing 1 in the axial direction of the rod; 63 ₁ , 6
3 _2, ring-shaped magnet 6 surrounding around the rod 61
5; composed of 65 _1, 65 _2. The combination of the pivot support 43 and the actuator 45 shown in FIG.
Rotates.

Next, as a modification of the angle adjusting means 41 shown in FIG. 7, a three-point drive type mechanism as shown in FIG. 8 will be described below. In this example, the pivot support member 43 provided at the point A of the angle adjusting means 41 shown in FIG. 6 has the function of an actuator while maintaining the pivot support. The apparatus, as FIG. 7 is substantially the same as the mechanism of the actuator 45 shown in, the distal end portion of the rod 61 _3, a convex portion provided in the mirror center portion of the mirror back surface is fitted, the recess Is provided. With such a structure, in accordance with the inclination of the first mirror by driving of the actuator 45 _1, 45 _2, the actuator 45 ₃ is driven to correct the displacement amount of the mirror surface center point,
It is possible to always keep the mirror surface at the localization value.

Next, another example of the angle adjusting means 41 is shown in FIG.
A description will be given based on FIG. The angle adjusting means 41 shown in FIGS. 9 and 10 is urged by a biasing member such as a spring on the back side of the reflection center D of the mirror in the direction of the support table 47, and on the three back sides of the mirror surrounding the reflection center of the mirror. the actuator 45 _1, 45 to place the _2, 45 _3. The center of gravity of the actuator 45 _1, 45 _2, 45 ₃ is the point of D in this case. The actuator 45 _1, 45 _2, 45 ₃ is preferably arranged so as to form an equilateral triangle. In this case, the actuator 45 _1, 45 _2, 45 _3, while maintaining as the movement amount in the direction perpendicular to the mirror of the point D is always zero, and the displacement control, to adjust the mirror angle.

Further, another example of the angle adjusting means 41 will be described with reference to FIGS. In this example, the mirror support mechanism is an example in which the mirror is supported in a gimbal shape and the rotation angles of the two axes are controlled. The mirror is supported so that the reflection center on the mirror surface does not move. The first mirror 16 first supports a support frame 67 rotatably in a first axial direction via a first shaft 71, and a rotatable support frame 67 in a second axial direction via a second shaft 73. , And the support frame 67 itself is fixed to the support base 47. First shaft 71 and second shaft
The axis 73 is parallel to the mirror surface and substantially orthogonal at a point on the mirror surface.

In the first mirror 16, a pair of first actuators and a first urging member are disposed on the back side of the mirror so as to be axially symmetric with respect to the first axis. The first actuator 45 ₁ is disposed on the mirror back side of the point B, for example the mirror 16, so that the rod 61 ₁ is in contact with the mirror back surface,
An urging member (not shown) is arranged behind the mirror at the point A.
The pair of first actuators and the first urging member include:
It is fixed on a support table 47.

Similarly, the support frame 67 has
Axisymmetrically, the pair of second actuators and the second
A biasing member is disposed on the back side of the mirror. The second actu
Eta 45_TwoIs the back side of the mirror surface at point C of the support frame 67, for example.
Placed on the bar 61_TwoIs always in contact with the back side of the support frame 67.
For example, as shown in FIG. _Two
Are provided so as to engage with the support frame 67. A pair of second
The actuator and the second biasing member are similarly supported
47. By the way, a pair of actuaries
The data and the biasing member are paired with respect to the first or second axis.
The arrangement is not necessarily limited to the
So that the-rotates about the first axis or the second axis,
Actuator tip is always on the back of the mirror or support frame
It is also possible to arrange so as to contact the surface.

[0055] Further, instead of providing a pair of actuators 45 ₂ and the biasing member 67 ₂ on the support frame 67, the second shaft is extended to the outside of the support frame 69 to the gear or the like and the same mesh with its axis It is also possible to rotate the support frame 67 as a rotation mechanism combining a step motor and the like.

In the above example, the biasing member is provided on the back side of the first mirror 16 and is biased toward the support table 47 to enable the angle adjustment of the first mirror 16. The actuator 45 applied to the present invention is not limited to this. By forming the support portion of the first mirror 16 with a magnetic material, the first mirror 16 is moved in the The urging member may be configured so as not to need the urging member.

Although an apparatus using a piezoelectric element has been illustrated as an example of the displacement element of the actuator 45, an electrostrictive element, a magnetostrictive element, a voice coil motor, a pulse motor, an ultrasonic motor and the like may be used in addition to the piezoelectric element. The device can also be used.

In the printing apparatus shown in the drawing, the projection light of each original image whose optical path has been adjusted by such a mirror optical system is incident on the lenticular photosensitive material 18 to print each original image. In the apparatus, before printing the image on the lenticular photosensitive material 18, the contrast of the projected image projected on the projection medium is directly or indirectly, that is, projected using a projection medium such as a screen or a contrast sensor. The video is reproduced on a display or the like, and the contrast of the reproduced image is measured, and the main subject is determined according to the obtained contrast or from the shooting data of the original image.
Is calculated, and the angle of the first mirror 16 is adjusted using the angle adjusting means 41 in accordance with the calculated shift amount, so that the main subject of the original image is aligned.

[0059]

[0060]

First, as one method, a method of measuring the contrast of a projected image of an original image using a contrast sensor as a medium to be projected and performing main object alignment will be described. In this method, a contrast sensor (hereinafter, referred to as a sensor) is arranged at a position corresponding to the lenticular sheet 19 at a portion corresponding to the main subject of the projected image, and at least an image of the main subject is projected on the sensor.
In this method, the angle of the first mirror 16 is adjusted so that the image contrast signal is maximized, and the main subject of each original image is aligned.

FIG. 13 conceptually shows this example. The lenticular photosensitive material 18 is removed or covered with a white plate or the like, and the contrast sensor 80 is arranged at the main subject position of the original image. The output signal of the contrast sensor 80 is transferred to a contrast calculation circuit 82, converted into an image contrast signal, and sent to a control circuit 84. On the other hand, the angle of each first mirror 16 at this time is determined by driving the angle adjusting means 41. The signal is sent from the circuit 86 to the control circuit 84, and both are sent to the control circuit 8.
4 is stored. Here, the drive circuit 86 changes the angles of the first mirrors 16 ₁ , 16 ₂ and 16 ₃ sequentially or simultaneously, and similarly stores the image contrast signal and the angle of the first mirror 16 in the control circuit 84. Is done.

[0063] For example, after determining the image composition by the first original image 13 ₂ to adjust the angle of the mirror 16 ₂ as the reference image, by repeating the operation for measuring the image contrast signal, the mirror 16 ₁ and 16 ₃ When the angle of the first mirror 16 at which the image contrast signal is maximized is obtained by sequentially adjusting the angle, the control circuit 84 instructs the drive circuit 86 to this angle, and the drive circuit 86 (the angle adjustment means 41) performs this operation. The angle of the first mirror 16 is adjusted,
The main subject of the original image 13 is adjusted.

The method of moving the sensor is not particularly limited. The image may be projected on a screen or the like, and the sensor may be moved by hand while watching the projected image. The sensor may be moved using a known moving means such as a stage. Also, lenticular
At the position corresponding to the sheet, a white flat plate
The screen is arranged, the projected image obtained on the screen is read by an image pickup device such as a CCD camera, and this is reproduced on a display such as a CRT. The sensor is manually operated according to the reproduced image, or an XY stage or the like. in may be moved.

Preferably, a sensor is used in conjunction with the display, and the main subject is designated on the display to automatically move the sensor. That is, in this case, the projected image of the original image projected on the screen or the like is recorded by an image pickup device such as a CCD camera and reproduced on a display such as a CRT. Next, a main subject is designated on the display by means such as a mouse. Here, the display and the sensor are linked, and when the main subject is specified on the display, the sensor moves on the screen to the main subject position specified by a known moving means such as an XY stage. When the sensor moves to the position of the main subject, the angle of the first mirror 16 is adjusted by the angle adjusting means so as to maximize the image contrast signal as in the example shown in FIG. Matching is performed.

Further, it is also possible to adopt a configuration in which a main subject is specified by a display or the like using a full-surface sensor provided with a sensor corresponding to the entire surface of the lenticular photosensitive material, and the main subject is adjusted by operating the sensor in this portion. Good. In this case, the main subject specified on the display etc.
Pattern is recognized and stored.
Corresponds to the pattern of the main subject previously projected and stored previously
To find the pattern to be
calculate. This misalignment calculated for each original image
Based on the angle of the first mirror 16 corresponding to each original image.
The main subject may be adjusted and adjusted.

Since the main subject is often located at the center of the photograph, the sensor may be fixed to a portion corresponding to the center of the lenticular photosensitive material 18 to perform main subject alignment.

There are no particular restrictions on the sensors that can be applied. A linear stripe pattern as shown in FIG. 14A, a two-dimensional dot pattern as shown in FIG.
Any of various patterns of sensors, such as a combination of a plurality of concentric rings as shown in FIG.

When the adjustment of the main subject of all the original images is completed in this way, the contrast sensor, the screen and the like are removed, and the lenticular sheet 19 or the lenticular photosensitive material 18 is placed on the photosensitive material holding base 31 instead. Then, the projection or projection printing of all the original images is started.

In the main subject adjustment method described above, the contrast sensor is placed on a flat plate placed on the light- sensitive material holding base 31, that is, the lenticular photosensitive material is placed on the projection surface.
Although the contrast sensor was placed as a source, the surface on which the contrast sensor was placed was not the actual position of the lenticular photosensitive material, but a surface corresponding to the lenticular photosensitive material was provided separately, and the light flux from the original image was guided by the half mirror and auxiliary mirror. Then, the main subject adjustment may be performed on that surface.

[0071] Further, as described above, can <br/> be estimated shift amount of the main object image in than the original image photographing data such as the photographing distance photographing distance and the original images of the original image (shift amount) . Accordingly, several main subject distances at the time of photographing are selectively assumed, the shift amount (deviation amount ) of the main subject image on each original image is calculated based on this assumption, and the angle of the first mirror 16 corresponding thereto is calculated. the previously set, by adjusting the angle of the first mirror 16 in accordance with the shooting data, the main object alignment can intends row.

When this mode is applied, for example, when shooting with a zone-focus type camera, if the distance is set and the information is recorded beside the frame at the same time as shooting, the first mirror of the first mirror is obtained from the recorded value. The angle can be selected immediately. Further, in the AF camera, the autofocus result is recorded at the same time when the image is taken, these data are read, a predetermined angle of the first mirror is selected, and the first mirror is adjusted to the angle by the angle adjusting means 41. It can also be set automatically by using.

A distance measuring tool with a loupe can be used as an auxiliary tool when the operator visually estimates the distance. If a person appears in the original image, measure the distance between the eyes of the person on the original image (the average human pupil distance is about 65 mm),
The main subject distance is estimated from the interval. FIG. 15 shows the relationship between the pupil distance on the original image and the subject distance when the focal length of the camera lens is 30 mm.

In the above embodiment, a mirror is used for separating light beams. However, a similar effect can be achieved by using a prism instead of a mirror. Further, when the exposure amount is large in the photosensitive layer, an ND filter or the like may be provided in the mirror optical system so that the illuminance of the light beam can be adjusted individually or as a whole. In addition, in order to adjust the light amount of the luminous flux for each original image, a light amount adjuster combining a polarizing filter and a liquid crystal shutter may be provided between the light source system and each original image.

In general, the amount of irradiation of the central portion and the peripheral portion of the photosensitive layer of the lenticular photosensitive material 18 is uneven due to the light source and the projection lens. Is corrected by the cos 4 power law, so that c is located at the front or rear side of the projection lens (or during the projection lens when the lens is a combination lens).
A mask for correction based on the os4 power law may be arranged, or a light source whose peripheral light amount is increased according to the cos4 power law may be used.

As shown in FIG. 16, the lenticular sheet 19 has a plurality of continuous cylindrical lens portions having a predetermined curvature (for example, a cylindrical surface, a parabolic surface, etc.) on the side on which the light beam is incident. The side on which the layer 20 is provided has a flat outer shape, and has refractive power only in the width direction of the cylindrical lens portion. This cylindrical lens portion has a refractive index of 1.4 to
It is made of a transparent material of about 1.6. Ideally, the lenticular sheet 19 should be swung about a linear image element on the photosensitive layer to which each original image is connected, but it is difficult to do so. Whether the upper lenticular lens can be swung at an angle of ± θ around the center of curvature of the upper lenticular lens (Fig. 1
6), or may be swingably supported around a generatrix (line on a cylindrical curved surface) of the lenticular sheet that intersects the optical axis of the projection lens (not shown).

By doing so, each linear image element has the effect of widening the photosensitive layer surface under each lenticular sheet 19 over an angle range of 2θ, and the linear image element corresponding to each original image within the lens pitch. Elements spread evenly.
For example, when it is intended to form three widened linear image elements within one lens pitch using three original images as in this embodiment, as shown in FIG. 17, the three linear image elements are recorded on the lenticular photosensitive material 18. Each linear image element can have a wider line width within an area obtained by dividing the lens pitch into three.

When swinging the lenticular photosensitive material 18, the back surface of the lenticular photosensitive material 18 is fixed using, for example, a vacuum, and is swinged along the support shaft while the vacuum is maintained. Also, for example, a lenticular photosensitive material 1
8 may be fixed, and the film holding unit, the projection lens system, and the mirror optical system may be integrally swung.

The swing angle θ will be described with reference to FIG. 17. If the lens pitch of the lenticular sheet 19 is P, the thickness is t, and a lens with a refractive index n = 1.5 is used, Assuming that the center of curvature is 2 / 3t from the bottom of the thickness t and that each light beam intersects, t = [n / (n-1)] r tan θ = (P / 6) / ( tr) In the above equation, when n = 1.5, t = 3r tan θ = (P / 6) / (2r) θ = tan ⁻¹ P / 12r = tan ⁻¹ (P / 4t)

[0080] Further, by appropriately adjusting the swinging angle of the mirror 17 _1, 17 ₃ of the mirror angle and the lenticular light-sensitive material, it can change the widening of the linear image elements under the lenticular sheet at the center and left and right it can. For example, rocking is set at a rocking angle larger than the rocking angle required for printing by making the line width of the band image formed on the photosensitive layer of the lenticular photosensitive material uniform, and the shutter is set for each light flux. By turning on / off individually at different timings during the swinging operation exposure, the line width of the band image under the lenticular sheet is expanded or narrowed without individually overlapping.
Thereby, the technique described in Japanese Patent Publication No. 56-31577 can be achieved.

As described above, in the embodiment of the present invention,
Although an example in which a three-dimensional image is formed by projecting individual original images on a lenticular photosensitive material has been described,
According to the present invention, even in the case of printing original images from four or more different viewpoints, only one projection lens is required, and mirror optical systems are arranged in a three-dimensional space so as not to spatially interfere with each other. It is possible to simultaneously expose four or more original images.

First, as shown in FIG. 18, a four-lens
The subject 51 is photographed by a stereoscopic camera 57 having 53 ₁ , 53 ₂ , 53 ₃ , and 53 _4, and original images 13 ₁ , 13 ₂ , 13 ₃ , and 13 ₄ from different viewpoints are taken on a film 55.
To produce a 3D photo film.

The three-dimensional photographic film 55 is printed by, for example, a three-dimensional photographic printing apparatus shown in FIG. In the illustrated example, each of the two systems is a lenticular photosensitive material 1
The two mirror optical systems are arranged so as to be arranged symmetrically with respect to the optical axis at the center of 8 (the optical axis of the projection lens) in the horizontal direction of the image plane, and so as to be arranged symmetrically with respect to the vertical direction of the image plane. It is good also as arrangement. In FIG. 19, four original images 13
_1, 13 _2, 13 _3, 13 projecting Akimitsu passed through the _4, are respectively reflected by the mirror 16 _1, 16 _2, 16 _3, 16 _4,
Next, the light is reflected by the mirrors 17 ₁ , 17 ₂ , 17 ₃ , and 17 ₄ so that the light enters the lenticular photosensitive material 18 at a predetermined projection angle.

Although not shown, the mirrors 16 ₁ , 16 ₂ , 1
6 ₃ and 16 ₄ are respectively shown in FIG.
It is needless to say that the main subject alignment is performed by the above-mentioned method before the image is printed on the lenticular photosensitive material 18 by providing angle adjusting means as shown in FIGS.

As in the case of the above-mentioned three original images, the lenticular sheet may be swung about a horizontal plane about the support shaft in the range of ± θ by a driving device (not shown) at the time of exposure. .

The three-dimensional photographic printing apparatus of the present invention described above prints three or more original images by one projection lens (one-shot exposure) using one projection lens. However, the present invention is not limited to this. Instead, a configuration may be adopted in which printing is performed by a plurality of exposures by masking a predetermined combination of original images.

The stereographic printing apparatus shown in FIGS. 20, 21 and 22 prints three original images by two exposures, and uses a mask 2 for masking a specific combination of original images.
3 and a mask driving means 22 for driving the mask 23. 20 and 21 and FIG.
2 has basically the same configuration as that of the three-dimensional printing apparatus shown in FIG. 2 and the like, except that printing is performed a plurality of times. And a detailed description thereof will be omitted. Also,
In FIGS. 20, 21 and 22, for simplification of the drawings, optical systems such as mirrors not related to the operation (burning) shown in the drawings are not shown.

In the apparatus shown in the drawing, the film transport device 21 carries the film 55 to a predetermined position before printing the stereoscopic photograph, and during the stereophotography printing, the film 55 is kept at a constant distance from the lenticular photosensitive material 18.
5 is a device for holding the film 5 and unloading the film 55 after the completion of printing, and includes, for example, an unloading reel, a guide, and a frame.

The mask 23 is made of, for example, a plate-like rigid metal or plastic material in which a predetermined mask pattern is opened in the frame shape of the original image. The end of the mask 23 is movably supported by a mask driving device 22, and the mask 23 is moved in parallel on a plane on which the mask 23 extends under the control of the mask driving device 22. The mask driving device 22 is composed of a combination of known mechanisms such as a motor and a cam, a solenoid and a rod, or a spring and a hook charged in a film feeding process.

In such a stereographic printing apparatus,
Image printing includes baking of the original image 13 ₁ and the center of the original image 13 ₂ on the left side of the figure are performed by a total of two baking the baking of the original image 13 ₃ on the right side of the figure.

[0091] For example, as shown in FIG. 20, the original image 13 ₃
If it is masked by the mask 23, projecting Akimitsu the original image 13 ₁ through the projection lens 14, first mirror 16 ₁ and the second mirror 17 of the mirror optical system 15 ₁
In reflected being projected on the photosensitive layer of the lenticular light-sensitive material 18, while the projecting Akimitsu the original image 13 _2, as shown in FIG. 22, through the projection lens 14, first mirror 16 of the mirror optical system 15 _The lenticular photosensitive material 18 of the original images 13 _{1 and} 13 ₂ is reflected by the _second and second mirrors 17 ₂ and projected on the photosensitive layer of the lenticular photosensitive material 18.
Projection (burn-in) is performed simultaneously.

[0092] Then (or prior to performing the original image ₁₃ 1, 13 ₂ of the baking), as shown in FIG. 21, the original image 13 _1, 1
3 ₂ is masked by the operation of the mask drive unit 22, the projection exposure of the lenticular light-sensitive material of the original image 13 _3, projection lens 14, first mirror 16 ₃ and the second mirror 17 _third mirror optical system 15 Done through.

In printing any image, the main subject is aligned with the first mirror 16; 16 having the angle adjusting means 41 on the back side, as in the above-described stereoscopic printing apparatus.
With _1, 16 _2, 16 _3, performed as described above.

The original image 13 ₁ , shown in FIGS.
Mirror arrangement corresponding to 13 ₃ has a substantially symmetrical relationship with respect to the optical axis of the projection lens 14. Therefore, the original image 1
Figure 3 ₁ and 13 ₃ mirror optical system 15 corresponding to the 20
Or either one city shown in FIG. 21, by the mirror optical system 15 constitute the device so as to be rotatable with respect to the optical axis of the projection lens 14, a substantial simplification of the number of mirrors reduction and mirror optics Therefore, the configuration of the apparatus can be simplified. Incidentally, the mirror optical systems of the original image 13 ₂ In this case, maintains its mirror arrangement.

In addition, there is a method in which the original image is divided into an odd-numbered set of original images and an even-numbered set of original images and exposed and printed on a lenticular photosensitive material. In this case, a mask pattern is formed so as to transmit every other original image continuously arranged on the film. With such a mask pattern, odd-numbered sets of original images are first printed with a mask 23 having openings in the frame shape of the original image every other, and then moved by one frame of the original image by the mask driving device 22, Even sets of original images can be printed.

Although the above-described example is an apparatus for printing three original pictures, it is needless to say that even when such masking means is used, four original pictures or more original pictures may be printed. It is.

Incidentally, a three-dimensional photographic printing apparatus using such a masking means is disclosed in Japanese Patent Application No. Hei.
-88037.

Although the three-dimensional printing apparatus described above forms two or more original images on a lenticular photosensitive material with one projection lens, the present invention uses a plurality of projection lenses in addition to this. It may be what was.

The three-dimensional printing apparatus shown in FIG.
The light from the two original images enters the corresponding projection lens
To form an image on the lenticular photosensitive material,
A plurality of, for example, three condensers that convert each original image into a parallel light beam
Salenz 12; 12₁, 12 _Two, 12_ThreeAnd the mosquito
Multiple, for example, three originals taken from different viewpoints in Mera
Image 13; 13_1,13_2,13_ThreeAt a certain angle
A film guide 30 and a plurality corresponding to the three original images
Projection lens 14; 14_1,14_2,14_ThreeAnd What
Note that, in FIG. 23, the same members
The same numbers are given, and the detailed description is omitted.

The light emitted from the light source 11 and collimated by the condenser lenses 12; 12 ₁ , 12 ₂ and 12 ₃ enters the corresponding original images.

[0102] In the illustrated example, is arranged as a zero plane parallel to the angle of the lenticular light-sensitive material 18 original image 13 ₂ is disposed on the reference plane corresponding to the center (C) of the original image, also, the left and right of the original image 13 _1, 13 _3, symmetrically at the center of the original image 13 ₂ of the optical axis, and are disposed to be inclined at a predetermined angle with respect to the reference plane. The inclination angles of these original images 13 _{1 and} 13 ₃ are determined by the projection lenses 14 and 14 arranged between the original image 13 and the lenticular photosensitive material 18.
It is determined in consideration of the space properties of ₁ , 14 ₂ and 14 ₃ . Therefore, the inclination angle of the original image differs depending on the size and arrangement of the projection lens system.

The projection light transmitted through each original image is then transmitted to the projection lens 14; 14 ₁ , 1 arranged corresponding to each projection image.
4 ₂ incident on the 14 _3, are adjusting the focal position. Here, in the apparatus of the illustrated example, the projection lens 14 ₁ and 14 ₃ original image corresponding to each of 13 ₁ and 13 ₃
Are shifted from the optical axis O side by a predetermined angle. Thereby, the inclination of the image surface on the photosensitive layer 20 is corrected, and a good three-dimensional image can be obtained.

Projection lens 14; 14 ₁ , 14 ₂ , 14 ₃
Is transmitted through the first mirrors 16 ₁ , 16 ₂ , 1
6 ₃ and the second mirrors 17 ₁ , 17 _2, and 17 ₃ are incident on the mirror optical system 15, and with respect to the lens surface of the lenticular photosensitive material 18 within a range of the light receiving angle of the lens. The optical path and the optical path length are adjusted so that the incident angle becomes. Also, the first mirror 16; 16 _1, 16 _2, 16
_An angle adjusting means 41 is arranged on the back side of ₃ to adjust the main subject of the projected image. In FIG. 23,
Corresponding to the central ray corresponding to throw Akimitsu from the center of the original image 13 _2, the first mirror 16 ₂ and the second mirror 17 ₂
Are arranged on the front (or back) side in the direction perpendicular to the paper surface, but are omitted for simplification of the drawing.

In the illustrated apparatus, the projection lens 14₁
Original picture 12 transmitted through₁Of the first mirror 16₁ ,
And the second mirror 17₁ Depending on the projection lens
14 _Three Original picture 12 transmitted through_Three Is the first mirror 1
6_ThreeAnd the second mirror 17_ThreeDepending on the location
Reflected in a certain direction, lenticule at a predetermined angle (2θ)
The light enters the color photosensitive material 18 to form an image.

In any image printing, the main subject is aligned by using the first mirror 16 having the angle adjusting means 41 on the back side in the same manner as in the above-described stereographic printing apparatus. Do.

In the illustrated apparatus, each of the projection light of each original image has its own projection lens.
The focal length of the projection lens may be the same, and the optical path length of each projection light may be the same. When the optical path lengths of the projection lights are different, the projection lenses having different focal lengths may be used to form the respective projected images on the lenticular photosensitive material 18 at the same projection magnification. In this case, for example, the central optical path of the projection, Akimitsu the original image 13 ₂ of a straight line, by omitting such a ₂ first mirror 16 ₂ and the second mirror 17, simplifies the optical system, also reducing the size of it can.

In such a three-dimensional photographic printing apparatus, a projection lens is individually used for each original image and the original image is arranged at a predetermined angle. Therefore, the light beam can be separated from the beginning, and a bright lens can be used. This is advantageous in image quality. Further, as described above, the optical system can be reduced in size and simplified.

Although the example described above is an apparatus for printing three original pictures, even when such a plurality of projection lenses are used, it is possible to print four original pictures or more original pictures. Of course.

A stereo photographic printing apparatus using such a large number of projection lenses is described in detail in Japanese Patent Application No. 3-121333 filed by the present applicant.

In the three-dimensional photographic printing apparatus of the present invention, as the photosensitive material applied to the lenticular photosensitive material, any conventionally known photosensitive material can be used. For example, a silver halide photographic photosensitive material, an electrophotographic Photosensitive material (photoreceptor), heat-sensitive pressure-sensitive photosensitive material, pressure-sensitive resin photosensitive material, heat-developable photosensitive material, heat-sensitive photosensitive material, and the like.

Examples of the use of the three-dimensional photo printing apparatus of the present invention include a general photo, a large photo, a three-dimensional picture postcard, a display, a product notice, a show window display, and the like, depending on the size of the lenticular sheet. For example, although an example in which the photosensitive material is developed by one exposure has been described, the invention can be similarly applied to a case in which the photosensitive material is developed by a plurality of exposures.

For example, in the embodiment, a two-dimensional image is once photographed on a photosensitive material on a film, and the film-shaped photosensitive material is projected on a lenticular photosensitive material to form an indirect three-dimensional photographic printing method for forming a three-dimensional image. I explained,
It is also possible to adopt a CCD element as a photosensitive material, transmit a linear image element formed under a lenticular sheet as an image signal, and display it on a CRT with a corresponding lenticular screen, for example, to observe a stereoscopic image. .

In addition, 3 through a lenticular sheet
The method of the present invention can also be applied to a direct projection display method for forming a two-dimensional image. That is, there is a type in which a diffusion surface is provided on the back surface of the lenticular sheet, and a viewer located on the side of the projection optical system stereoscopically views a stereoscopic image formed by projecting a projection image on the diffusion surface. Further, two lenticular sheets are formed by sandwiching the transmission diffusion plate on the flat surface thereof, and are projected onto the structure through a projection lens arranged on one side through an optical system. In some cases, an observer stereoscopically views the resulting image from the other side.

[0114]

As can be understood from the above description, according to the present invention, the contrast of the projected image of the original image projected on the screen or the contrast sensor is measured directly or indirectly. Or, based on the shooting data of the original image, adjust the angle of the mirror for adjusting the optical path of the original image so that the main subject of the original image matches with the lenticular sheet (lenticular photosensitive material), A sharp image can be formed, and a high-quality three-dimensional photograph can be formed.

In addition, since the main subject can be adjusted simply by adjusting the angle of the mirror on the optical path of each original image in accordance with the actual projection image or the shooting data of the original image. Can be simplified, and the device configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a state where three different original images are created on a film by a three-lens camera of a subject.

FIG. 2 is a conceptual diagram when the three-dimensional printing apparatus of the present invention is applied to an example in which three original images are printed on a lenticular photosensitive material.

FIG. 3 is a conceptual diagram showing another example of a mirror optical system of the three-dimensional printing apparatus shown in FIG. 2;

4 is a conceptual diagram illustrating the optical system of a central original image of the stereoscopic printing apparatus shown in FIG. 2 when the apparatus is viewed in a direction perpendicular to FIG. 2;

FIG. 5 is a conceptual diagram showing another example of the optical system of the central original image of the three-dimensional photographic printing apparatus shown in FIG. 2, when the apparatus is viewed in a direction perpendicular to FIG.

FIG. 6 is an explanatory diagram illustrating an example of an angle adjusting unit.

FIG. 7 is a partial sectional side view of the angle adjusting means shown in FIG. 6;

FIG. 8 is a partial sectional side view illustrating another example of the angle adjusting means.

FIG. 9 is an explanatory diagram illustrating another example of the angle adjusting unit.

FIG. 10 is a partial sectional side view of the angle adjusting means shown in FIG. 9;

FIG. 11 is a partial cross-sectional side view illustrating another example of the angle adjusting unit.

FIG. 12 is a plan view of the angle adjusting means shown in FIG.

FIG. 13 is a conceptual diagram illustrating an example of main subject alignment in an example of the stereoscopic printing device of the present invention.

FIGS. 14A, 14B, and 14C are diagrams illustrating pattern examples of a contrast sensor.

FIG. 15 is a graph showing the relationship between the pupil distance on the original image and the subject distance.

FIG. 16 is an explanatory diagram illustrating a swing angle when swinging a lenticular photosensitive material.

FIG. 17 is an explanatory diagram for explaining the swing angle when swinging the lenticular photosensitive material in more detail.

FIG. 18 is an explanatory diagram showing a manner in which a subject uses a four-lens camera to create four different original images on a film.

FIG. 19 is a schematic perspective view when the stereographic printing apparatus of the present invention is applied to an example in which four original images are printed on a lenticular photosensitive material.

FIG. 20 is a conceptual diagram of another example in which the stereographic printing apparatus of the present invention is applied to an example in which three original images are printed on a lenticular photosensitive material.

FIG. 21 is a conceptual diagram illustrating the printing operation of the stereographic printing apparatus shown in FIG.

FIG. 22 is a conceptual diagram illustrating the printing operation of the stereoscopic printing apparatus shown in FIG.

FIG. 23 is a conceptual diagram of another example in which the stereographic printing apparatus of the present invention is applied to an example in which three original images are printed on a lenticular photosensitive material.

FIG. 24 is a conceptual diagram illustrating a case in which an original image is printed in a general stereoscopic method using a lenticular sheet.

FIG. 25 is a conceptual diagram illustrating a case of observing the lenticular sheet on which the original image of FIG. 24 has been printed.

FIG. 26 is a diagram showing a relationship between a change in subject distance and an image position on the film.

[Explanation of symbols]

11 light source 12 condenser lens 13; 13 _1, 13 _2, 13 ₃ original 14 projection lens 15 mirror optical system 16; 16 _1, 16 _2, 16 ₃ the first mirror 17; ₁ 17, 17 _2, 17 ₃ second Mirror 18 Lenticular photosensitive material 19 Lenticular sheet 20 Photosensitive layer 30 Film holder 31 Sensitive material holding table 41 Angle adjusting means 43 Pivot support 45; 451 _, 452 _, 453 ₃ Actuator 47 Support 63; 631 _, 632 _, 63 ₃ Piezoelectric element 80 Contrast sensor 82 Contrast operation circuit 84 Control circuit 86 Drive circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 35/25

Claims (8)

(57) [Claims] 1. A light beam from an original image obtained from three or more different viewpoints is made incident on a projection lens, and the optical path of the light beam passing through the projection lens is changed by a mirror optical system for each original image. When a light beam is made incident on the lenticular sheet at a predetermined angle, and projected onto the image element storage medium or display medium as a plurality of linear image elements, a projection medium is arranged at a position corresponding to the lenticular sheet, and the projection is performed. By measuring the contrast of the projected image obtained on the medium and adjusting the optical path of each light beam by the mirror optical system so that the measured contrast is maximized, the main subject of each original image in the lenticular sheet is aligned. A method of aligning a main subject in stereoscopic image projection, which is performed. 2. The three-dimensional photographic projection system according to claim 1, wherein the projection medium is a contrast sensor, and an optical path of each light beam is adjusted by the mirror optical system such that an image contrast signal of the contrast sensor is maximized. Main subject alignment method. 3. The projection medium is a screen, the projected image formed on the screen is photoelectrically read and displayed on a display, and the projected image displayed on the display is measured by a contrast sensor. 2. The method according to claim 1, wherein the optical path of each light beam is adjusted by the mirror optical system such that the measured image contrast signal is maximized. 4. Original images obtained from three or more different viewpoints
Light from the lens into a projection lens, and the projection lens
The optical path of the passed light beam is reflected by the mirror optical system for each original image.
To change each light flux to a predetermined angle on the lenticular sheet.
Incident at different degrees, each as multiple linear image elements
When projecting on the element storage medium or the display medium, the shift of the main subject on each original image is calculated from the shooting distance of the three or more original images and the shooting interval of each original image,
By adjusting the optical path of each light beam by the mirror optical system according to this, the main subject of each original image in the projected image is adjusted.
A main subject alignment method for stereoscopic picture projection , characterized by performing body alignment . 5. A three- dimensional photographic printing apparatus for printing an original image from three or more different viewpoints through a lenticular sheet into a plurality of linear image elements, respectively, and printing the linear image elements on a photosensitive material disposed on the back side of the lenticular sheet. A printing light source, a film holding unit that holds a film that carries a plurality of original images, and at least one projection lens that forms projection light of each original image having original image information transmitted through the film on the photosensitive material. A mirror optical system having at least one mirror that changes an optical path of projection light that has passed through the projection lens, and a mirror angle adjustment mechanism disposed on at least one of the mirrors; and the lenticular sheet and the photosensitive material. Holding means for holding at a predetermined position, and a main cover of at least the original image on a surface corresponding to the lenticular sheet. And a contrast sensor that can be freely arranged at a body position.Before printing the original image on the photosensitive material, the projection light of the original image is formed on the contrast sensor, and the image contrast signal of the contrast sensor is Stereoscopic photography, wherein the angle of the mirror is adjusted by the angle adjustment mechanism so as to be the maximum, the main subject of each original image is matched, and printing is performed on a photosensitive material via the lenticular sheet. Printing equipment. 6. A three- dimensional photographic printing apparatus for printing an original image from three or more different viewpoints through a lenticular sheet into a plurality of linear image elements, respectively, and printing the linear image element on a photosensitive material disposed on the back side of the lenticular sheet, A printing light source, a film holding unit that holds a film that carries a plurality of original images, and at least one projection lens that forms projection light of each original image having original image information transmitted through the film on the photosensitive material. A mirror optical system having at least one mirror that changes an optical path of projection light that has passed through the projection lens, and a mirror angle adjustment mechanism disposed on at least one of the mirrors; and the lenticular sheet and the photosensitive material. Holding means for holding at a predetermined position, and a main cover of at least the original image on a surface corresponding to the lenticular sheet. A screen which is freely disposed in the body position, the prior baking of the original image on the photosensitive material, to image the projection light of the original image on the screen,
The projected image is read photoelectrically and displayed as a reproduced image, and a display for setting a main subject on the reproduced image, and a main subject set on the display in conjunction with the setting of the main subject are displayed. A contrast sensor that moves to a position, and after adjusting the angle of the mirror by the angle adjustment mechanism so that the image contrast signal of the contrast sensor is maximized, after matching the main subject of each original image. A three-dimensional photographic printing apparatus for printing on a photosensitive material via the lenticular sheet. 7. An original image from three or more different viewpoints is rendered.
Multiple linear image elements each via a chicular sheet
And the photosensitive material arranged on the back side of the lenticular sheet
A three-dimensional photographic printing apparatus for printing on a material, which holds a printing light source and a film carrying a plurality of original images.
Film holding means, and an original image transmitted through the film.
The projection light of each original image having information is formed on the photosensitive material.
Through at least one projection lens and the projection lens
At least one mirror that changes the optical path of the projected light
And an angle disposed on at least one of the mirrors
A mirror optical system having an adjustment mechanism, and the lenticular
Holding means for holding a sheet and a photosensitive material in a predetermined position
And calculating the deviation of the main subject on each original image from the photographing distance of the three or more original images and the photographing interval of each original image,
And adjusting the angle of the mirror I by the angle adjustment mechanism as the main subject of the original image matches in response to the deviation
After that, it is printed on the photosensitive material through the lenticular sheet.
A three-dimensional photo printing apparatus. 8. The mirror according to claim 5, wherein the mirror angle adjusting mechanism includes a plurality of actuators disposed at predetermined positions of the respective mirrors, and a control device for controlling the actuators. 3D photo printing equipment.