JP2746788B2 - Stereoscopic image recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of recording a three-dimensional image on a lenticular recording material having a recording layer integrally formed on the back surface of a lenticular sheet, and is capable of performing image processing such as enlargement / reduction and lenticular sheet. The present invention relates to a three-dimensional image recording apparatus capable of easily coping with a change in the specifications of the present invention and capable of easily producing a high-quality three-dimensional image in a simple process .

[0002]

Stereoscopic image recording using the Related Art lenticular sheet, for example, as a two-lens system shown in FIG. 9, the lenticular recording material F having a recording layer D on the rear surface of the lenticular sheet C, the left and right different from viewpoints A method is known in which original images A ₁ and A ₂ are projected through projection lenses B ₁ and B ₂ , decomposed into linear images by a lenticular sheet C, and recorded as E ₁ and E ₂ . The recording layer image E ₁ projected recorded in D, E _2, eye L of the right and left as shown in Figure 10, by observing through the lenticular sheet C of the lenticular recording material F in R, the original image A ₁ and image a ₂ are stereoscopically.

As a three-dimensional image recording apparatus (hereinafter referred to as a recording apparatus) for recording a linear image on such a lenticular recording material, an original image which is a transmission image is irradiated by a light source such as a halogen lamp . As shown in 9 ,
There is known an optical exposure (printing) recording apparatus in which transmitted light of an original image is formed on a lenticular recording material through a lenticular sheet by a projection lens and is exposed as a linear image. , Id. 48-648
Nos. 8, 49-607 and 53-33847 each disclose a recording apparatus which projects two original images onto a lenticular recording material and prints them.

It is also known that a high-quality stereoscopic image can be obtained by increasing the number of original images. Japanese Patent Publication No. 58-7981 discloses a method of sequentially exposing a large number of original images to a lenticular recording material. The device is a Japanese Patent Publication No. 56-31.
No. 578 discloses a recording apparatus which collectively projects a large number of original images on a field lens and then records each original image on a lenticular recording material at a corresponding printing angle by a projection lens corresponding to each original image. ing.

In Japanese Patent Application Laid-Open No. 3-185438, a reciprocating shutter is used, and the speed of the shutter is slightly changed during the movement, thereby exposing (printing) through a lenticular lens to form a three-dimensional image. There is disclosed a method of correcting exposure unevenness which is inevitably generated when recording and is caused by vignetting of a projection lens and a lenticular lens.

In such an optical three-dimensional image recording apparatus, it is necessary to project a plurality of original images onto a lenticular recording material and expose the same, so that an optical system for projecting the original images onto the lenticular recording material is complicated. Unavoidable structure, and the degree of freedom in designing the optical system is low. In particular, as the number of original images for obtaining high image quality increases, the optical system becomes extremely complicated and large-scale. In addition, the optical system becomes more complicated with a change in magnification such as enlargement or reduction of a recorded image. In addition, the specifications of the lenticular sheet, such as the pitch of the lenticular sheet to be used, are changed with the change of the viewing distance. In this case, the exposure conditions (apparatus configuration), such as the change of the exposure (printing) angle, etc.
Can not be easily handled because it is necessary to change Similarly, it is also difficult to cope with a change in the recording image size.

Further, since image recording (printing) on the recording layer is performed through a lenticular sheet (lenticular lens), it is possible to avoid the occurrence of exposure unevenness due to vignetting of the lenticular sheet even if any optical correction is performed. And the recorded image is degraded.

In other words, a three-dimensional image recording apparatus that performs such optical exposure (projection exposure) is complicated and difficult to handle, and is capable of recording a high-quality three-dimensional image with a high degree of freedom with good efficiency. Did not.

On the other hand, a three-dimensional image recording method using a relatively simple optical system that can easily cope with image processing such as changing the magnification and sharpness of a recorded image, and also changing the size of a recorded image and a specification of a lenticular sheet. Image recording by scanning exposure is known, and various apparatuses and methods have been proposed.

For example, Japanese Patent Publication No. 59-37813 discloses that a plurality of original images are photographed and processed by a TV camera, stored in a frame memory, and the stored image signals are used in accordance with the pitch of a lenticular lens using the same. A three-dimensional image recording method is disclosed in which a linear image is sequentially taken out as a (linear) image, a linear image is recorded on a recording material by scanning exposure, and a lenticular sheet is bonded to the recording material.

Japanese Unexamined Patent Application Publication No. 1-295296 discloses a method in which three-dimensional spatial coordinate data obtained from image information of a plurality of original images having unique continuous disparity information or time difference information is applied to a lenticular lens of a lenticular sheet. A pixel for a stereoscopic image is formed by performing a division process as a linear image into a corresponding section, and the pixels are arranged in reverse order with respect to the parallax information or the time difference information and recorded on a recording material. A method for creating a three-dimensional, variable pixel forming sheet to be attached to a sheet is disclosed.

[0012]

As is apparent from the above configuration, a recording apparatus for a three-dimensional image by scanning exposure basically converts image information of a plurality of original images obtained by a TV camera or the like into a line. Process as a shape image. This image information is then transferred to a scanning exposure apparatus, and a linear beam of each original image is placed in a predetermined order within one pitch of a lenticular sheet by a light beam modulated according to the image information.
Scanning exposure is performed sequentially so that the recording material G
A linear image is recorded on the. That is, in the case of the four original images a, b, c, and d, as shown in FIG. 11 , the linear images a, b, c, and d correspond to the pitch P of the lenticular sheet. The recording material G is recorded one by one in a predetermined order, and the recording is repeated for each pitch P.
Then, linear images of the original images a, b, c and d are periodically and sequentially recorded.

When the recording of all the original images on the recording material G is completed, the recording cycle of each original image on the recording material E (a, a,
(Periods of b, c, d) and the pitch P of the lenticular sheet are accurately aligned so that they are attached to each other, and the recording of the stereoscopic image is completed.

According to such a recording apparatus of a three-dimensional image by scanning exposure, the magnification change such as enlargement or reduction of the recorded image can be performed.
Since the read image information can be performed simply by processing it electrically, there is no inconvenience such as complicating the optical system, and various image processing such as sharpness and contour enhancement are also easily performed. be able to. Further, even if the number of original images increases, image recording can be basically performed by one scanning exposure apparatus, so that there is no problem such as an increase in the size and complexity of the apparatus configuration.

However, these recording apparatuses using scanning exposure cannot perform image recording on a lenticular recording material in which a recording layer is integrally arranged on the back side of a lenticular sheet. After recording the linear images of the original images on G, it is necessary to accurately match the recording cycle of each original image with the pitch P of the lenticular sheet C and bond them together. If the positional relationship between the two goes wrong,
Not only can the recorded image not be suitably viewed in a stereoscopic manner, but also disadvantages such as the generation of an inverted stereoscopic image and a multiple image occur.

Here, the pitch P of the lenticular sheet C
Is 5 for large displays such as displays in large places.
Although there is a case where an object having a diameter of at least mm is used, an object having a size of about 0.1 mm to 0.3 mm is widely used in a case of a normal stereoscopic photograph or the like. Therefore, the operation of accurately positioning and bonding the lenticular sheet C and the recording material G on which the linear image is recorded is a very skillful and time-consuming operation, and furthermore, the positions of both are accurately determined. Because it is difficult to match, a high-quality stereoscopic image cannot be produced with good efficiency.

An object of the present invention is to solve the above-mentioned problems of the prior art, and it is possible to perform image recording by scanning exposure on a lenticular recording material having a recording layer integrally provided on the back surface of a lenticular sheet. Therefore, it is not necessary to perform the work of bonding the lenticular sheet and the recording material after recording the linear image, and furthermore, change the magnification of the recorded image, image processing such as sharpness, change the specification of the lenticular sheet, change the size of the recorded image, etc. 3D image using lenticular recording material, which can easily cope with
A recording device is provided .

[0018]

In order to achieve the above object, a stereoscopic image recording apparatus according to the present invention comprises a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet, and a plurality of lenticular recording materials from different viewpoints. A three-dimensional image recording device that records an original image, wherein image information of the plurality of original images is obtained,
The formation of a linear image to be recorded for each of the original images, and the completed three-dimensional image, so that they can be correctly viewed when viewed from the lenticular sheet side, so that each linear image is recorded on the recording layer according to the recording conditions of each original image. An image processing means for determining a recording position and outputting as linear image information; and a one-dimensional deflection of a light beam modulated in accordance with the linear image information output from the image processing means in the main scanning direction. Hand to inject
A step , and means for relatively moving the lenticular recording material and the light beam deflected in the main scanning direction in a sub-scanning direction substantially orthogonal to the main scanning direction ;
The relative scanning speed of the light beam in the main scanning speed and sub-scanning direction
Scanning lines and wrench defined by the light beam, depending on the degree
So that the main line direction of the cura sheet coincides with the main running direction.
Adjust the scanning direction or the angle of the lenticular recording material
Then, there is provided a three-dimensional image recording apparatus, comprising: an image forming means for exposing a recording layer of a lenticular recording material from the back surface with the light beam; and a means for positioning image recording on the lenticular recording material.

[0019]

According to the three-dimensional image recording apparatus of the present invention, a three- dimensional image is obtained by performing image recording on a lenticular recording material having a recording layer formed on the back surface of a lenticular sheet.
Image information of the original image is obtained by, for example, photoelectrically reading a plurality of original images, forming a linear image for each original image, determining a recording position of the linear image, and furthermore, After performing image processing such as front / back inversion, the light beam scanning
The lenticular sheet and the main scanning method
The basic configuration is to record a linear image of each of the original images from the back side of the lenticular recording material in the same direction.

Conventionally, as a device for recording a three-dimensional image on a lenticular recording material, projection light of a plurality of original images is incident on a lenticular sheet at an exposure angle corresponding to the photographing conditions of the original image, and a linear image is formed by the lenticular sheet. An optical stereoscopic image recording apparatus that exposes a recording layer by decomposing the recording layer into an image is known. However, in order to cope with a change in the magnification of a recorded image such as enlargement or reduction, a change in the size of a recorded image, an increase or decrease in the number of original images for high image quality, a change in the specification of a lenticular sheet, etc. Is extremely complicated, as described above.

On the other hand, with an optical system having a relatively simple configuration, it is possible to relatively easily cope with image processing such as magnification change, increase / decrease of the number of original images, specification of a lenticular sheet, size change of a recorded image, and the like. As a recording method, a method of recording a stereoscopic image by scanning exposure is known. However,
Conventional three-dimensional image recording by scanning exposure cannot directly record an image on a lenticular recording material in which a lenticular sheet and a recording layer (recording material) are integrated, and a linear image of an original image is recorded on various recording materials. After recording the original image, the recording cycle of the original image and the pitch P of the lenticular sheet are accurately adjusted, and the two are attached to each other, which requires an extremely high level of skill, and requires a difficult and time-consuming operation.

On the other hand, in the present invention, a lenticular recording material having a recording layer (recording material) integrally provided on the back surface of a lenticular sheet is scanned and exposed from the back surface side to record a three-dimensional image. Image information of the original image is obtained by reading a plurality of original images for each original image by means such as a CCD camera or the like. When reading the original image from the front side, the front and back sides of the read original image are inverted, and a lenticular sheet is used. After performing image processing such as formation of a linear image corresponding to the pitch, recording of the linear image so that the completed stereoscopic image looks correct when viewed from the lenticular sheet side (the front side of the lenticular recording material). After determining the recording position on the layer, the main scanning speed and
Scanning line and lenticular sheet generatrix according to scanning speed
Main scanning direction or lenticular countercurrent Metropolitan match so
An image is recorded on the recording layer of the lenticular recording material from the back side by adjusting the angle of the recording material, and a three-dimensional image is recorded on the lenticular recording material.

According to the present invention, since a three-dimensional image can be directly recorded on a lenticular recording material having a recording layer on the back surface of a lenticular sheet, a linear image of an original image is recorded on the recording material. Later, there is no need to perform skilled and time-consuming work of aligning and bonding the recording material and the lenticular sheet with high precision,
A three-dimensional image can be recorded with extremely high efficiency in a conventional three-dimensional image recording apparatus using scanning exposure.

In addition, the image information of the original image is obtained, and a light beam modulated in accordance with the image information is scanned to perform lenticular recording material.
This image is recorded on a lenticular recording material by exposing the material, and the thickness (especially, line width enlargement), interval, and density of the linear image can be adjusted by electrical image information processing and simple optical system adjustment. Can be changed, and the change and adjustment of the image recording area, the image density, and the like can be easily performed. Therefore, it is possible to easily cope with an increase / decrease in the number of original images, image processing such as a change in magnification and shading of a recorded image, a change in specifications of a lenticular sheet, a change in the size of a recorded image, and the like.

Further, in order to perform image recording from the back side of the lenticular recording material, an optical three-dimensional image recording apparatus which inevitably has an optical three-dimensional image recording apparatus for performing image recording on a lenticular recording material via a lenticular sheet is required. It is also possible to prevent image deterioration such as exposure unevenness due to vignetting of the lens.

Therefore, according to the present invention, a high-quality stereoscopic image obtained by performing various image processings with extremely good workability and according to the specifications of the lenticular sheet, the size of the recorded image, and the like can be obtained with a high degree of freedom. Can be recorded.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a stereoscopic image recording apparatus according to the present invention will be described.
Te, detailed description of the preferred embodiment shown in the accompanying drawings based on.

FIG. 1 conceptually shows an example of the stereoscopic image recording apparatus of the present invention . A stereoscopic image recording device (hereinafter, referred to as a recording device) 10 shown in FIG.
This is to read a plurality of original images obtained from different viewpoints and record a stereoscopic image on the lenticular recording material F of the present invention. Note that the following description is made on the case where the three original images a, b, c, and d are read and a stereoscopic image is recorded, but the present invention is not limited to this.

The lenticular recording material F has a predetermined curvature (for example, a cylindrical surface, a parabolic surface, etc.) on the surface side on which the light beam enters, and a lenticular sheet C in which a large number of lenticular lenses having refractive power only in this direction are arranged. The recording device 10 according to the present invention is formed by forming a recording layer D on the back surface (or by attaching a recording material) (see FIG. 8 ) .
Performs a recording of a stereoscopic image from the back side (recording layer D side) of the lenticular recording material F by so-called scanning exposure.

The lenticular recording material used in the recording apparatus 10 (stereoscopic image recording method) of the present invention is preferably a lenticular recording material F in which an antihalation layer AH is formed between a lenticular sheet C and a recording layer D. . This will be described in detail later.

The recording apparatus 10 basically reads the original images a to d photoelectrically, performs image processing on the images, and displays a linear image that appears correctly when the completed stereoscopic image is viewed from the front side of the lenticular recording material F. An image processing means 12 for outputting as image information, and a light beam L modulated according to the linear image information from the image processing means 12 in a main scanning direction (arrow x direction in the figure)
And the lenticular recording material F is conveyed in the sub-scanning direction (the direction of arrow b in the drawing) substantially orthogonal to the main scanning direction, and the lenticular recording material F is two-dimensionally scanned by the light beam L. It comprises an image forming unit 14 for recording a stereoscopic image by scanning exposure, and a positioning unit 16 for image recording on the lenticular recording material F.

The image processing means 12 includes a reading device 18 for reading the original images a to d, and a line for processing the image information read by the reading device 18 into image information of a linear image to be recorded on the lenticular recording material F. And an image processing apparatus 20.

The reading device 18 photoelectrically reads the original images a to d by solid-state imaging means such as a CCD camera, a CCD sensor, and an image scanner, and converts the original images into color image information (for example, R, G). , And B (primary color image information) to the linear image processing apparatus 20. The original image (image information) is not limited to a color image, but may be a monochrome image, and is not limited to a general photographic image, and may be a medical photograph such as an X-ray photograph or a fundus photograph. It may be. Further, the transferred image information may be any of digital information and analog information. As will be described in detail later, the read image information includes
Next, a linear image is obtained in which the original image is decomposed. Therefore, reading of image information by the reading device 18 is
This operation may be performed in response to the linear image or one scanning line of the light beam L, and the linear image forming apparatus 22 described later may not be necessary.

The reading device 18 used in the present invention is not particularly limited, and a device for scanning and reading an original image by slit scanning, raster scanning, a drum scanner, or the like using the above-described CCD sensor or the like, or a photographic type. Any of various known image reading apparatuses such as a one-shot reading apparatus can be used. Further, it may have a configuration in which a plurality of reading devices 18, preferably the number of original images are provided, and a plurality of original images can be read simultaneously, or the original images are sequentially read by one reading device 18. It may be.

The recording apparatus 10 of the present invention reads a plurality of (four in the illustrated example) original images photoelectrically, performs image processing on each of the original images to form a linear image for each of the original images, and converts the completed three-dimensional image into a lenticular recording material. The lenticular recording material F is arranged by arranging the linear images so as to be correctly viewed when viewed from the front side of F.
A stereoscopic image is recorded from the back side of. For this reason, when the original image is read from the front side, such as when the original image is a reflection original, it is necessary to reverse the original image and record the image, and the reading device 18 of the recording device 10 in the illustrated example reads the original image. Means for reversing the original image (information) is provided.

There is no particular limitation on the front / back inversion means, and any of various known methods such as a method using a mirror provided in the reading device 18 and a so-called image processing method of inverting the read image information by signal processing can be used. Is also applicable. In addition, the front / back reversing means is not limited to the one provided in the reading device 18, and may be provided in the linear image processing device 20.

Further, in the recording apparatus 10 of the illustrated example,
The reading device 18 may be provided with an original image front / back discriminating means for judging whether or not the original image is turned over.

There is no particular limitation on the method of discriminating the front and back of the original image. A method of mechanically or optically discriminating the original image by providing a notch, a sprocket hole, or the like, or a method of providing a mark for discriminating the front and back of the original image, Various methods such as a method of reading the mark when reading the original image and making a determination based on the mark may be used. Further, the operator may input the front and back of the original image at the time of reading the original image by the reading device 18, or set in advance whether the reading of the original image by the reading device 18 is front or back. In response to this, the operator may load the original image into the reading device 18. In this case, it is not particularly necessary to provide front / back discrimination means.

Further, a configuration may be employed in which the same image as the front / back determination means determines whether the original image is a negative image or a positive image, and performs processing of image information accordingly.

The recording apparatus 10 in the illustrated example may be configured such that the main subject of each original image can be set by means such as using a digitizer, providing a display on the reading device 18 and designating it with a mouse or the like. Note that the main subject setting means is not limited to the means arranged in the reading device 18 and may be arranged in the linear image processing device 20 or the image forming device 14 described later, or Accordingly, the reading device 18, the linear image processing device 20,
Alternatively, the main subject may be set by automatically determining by the image forming apparatus 14.

Original image a read by reading device 18
Are transferred to the linear image processing apparatus 20. The linear image processing device 20 includes a front image processing device 21,
A linear image forming apparatus 22, an arraying apparatus 24, and an image processing apparatus 26 are used to form a linear image to be recorded from the image information of the original images a to d, and a completed stereoscopic image is formed on the front side of the lenticular recording material F. The linear images of the original images are arranged (determining the recording position on the recording layer D) so that they can be viewed correctly when viewed from the viewer, and further, the recording conditions such as the specifications of the lenticular sheet C to be used and the image recording magnification are determined. Accordingly, the recording (arrangement) interval of the linear image, the width of the linear image, the image recording area, and the like are set, and the image processing such as density adjustment, color balance adjustment, and sharpness is performed as necessary. The image information of the stereoscopic image recording is transferred to the forming device 14.

The front image processing unit 21 performs various image processings based on the image information of the original images a to d sent from the reading unit 18, that is, various corrections such as color balance, density balance, sharpness, contour enhancement, and the like. And the necessity / unnecessity of image processing is determined, and these image processing are performed as necessary. Note that these corrections and image processing may be performed by an operator in response to the input.
And automatic input by the operator may be used in combination. In addition, this function may be provided to an image processing device 26 described later, or the image forming device 14 may have this function without providing the front image processing device 21 in particular.

The linear image forming device 22 converts the image information of the original images a to d sent from the reading device 18 and processed by the front image processing device 21 into the original image for each original image, and consequently the original image. A linear image to be recorded on the lenticular recording material F is formed. As described above, in the optical stereoscopic image recording in which the projection light of the original image is printed on the recording layer of the (lenticular) recording material, the projection light of each original image is projected through the projection lens, and the lenticular sheet C is projected.
Thus, the projection light of each original image is decomposed into a linear image and recorded on the recording layer (see FIG. 9 ).

On the other hand, the recording apparatus 10 of the present invention photoelectrically reads an original image and records a three-dimensional image by scanning exposure. By performing the processing, the original image is formed for each original image as a divided linear image. The linear image forming device 22 forms a linear image to be recorded on the recording layer D according to the specification of the stereoscopic image to be recorded or the lenticular sheet C from the image information of each original image.

Normally, image information from the reading device 18 is transferred to the linear image forming device 22 as line image information corresponding to one line (one scan) read by the reading device 18.
When the line read by the reading device 18 corresponds to the linear image to be recorded, the linear image forming device 22 converts the line image information from the line image information from the reading device 18 as necessary. 2, the linear images to be recorded on the recording layer D (for example, as shown in FIG. 2, the linear images a ₁ , a ₂ , a ₃ ,
a ₄ ..., linear images b ₁ , b ₂ , b ₃ , b from the original image b
₄ ..., Linear images c ₁ , c ₂ , c ₃ , c ₄ from the original image c
.., The linear images d ₁ , d ₂ , d ₃ , d ₄ from the original image d
.. Are formed to form a linear image in which each original image is divided.

The formation of the linear image (division of each original image) is performed by the resolution of the reading device 18 (the number of scanning lines to be read n), the pitch P of the lenticular sheet C, the recording magnification m of the stereoscopic image (or recording for the original image size). Size), the spot diameter (effective writing spot diameter) d of the light beam L incident on the lenticular recording material F, the number o of the original images, and the like, according to the reading conditions of the original image by the reading device 18 and the recording conditions of the stereoscopic image. It may be performed appropriately.

The recording conditions of the three-dimensional image, that is, the specifications of the lenticular sheet C such as the pitch P, the size of the three-dimensional image to be recorded, the recording magnification m of the three-dimensional image, and other various recording conditions of the three-dimensional image are input by the operator in advance. It may be set automatically by pre-scanning (pre-reading) the original image, selecting the lenticular recording material F to be used, or the like. Alternatively, the recording conditions may be set by using both of them.

However, as described above, the reading of the image information by the reading device 18 is performed corresponding to this linear image.
Preferably, when the number of read scanning lines and the total number of lenticular lenses are equal and the spot diameter of the light beam has an appropriate diameter (recording width), the linear image forming apparatus 22 may be unnecessary.

The information of the linear image of each original image formed by the linear image forming device 22 is then transferred to the arraying device 24, and the completed three-dimensional image is converted into a lenticular recording material F.
In other words, the arrangement, that is, the image recording position of each linear image, is determined so that the image looks correct when viewed from the front side. In the illustrated example, since a three-dimensional image is recorded using four original images a to d, the corresponding portions of the linear images of the original images arranged within the pitch P of the lenticular sheet C are combined and shown in FIG. As shown, a ₁ , b ₁ , c ₁ , d ₁ ,
Linear images of the original images are sequentially arranged as in a ₂ , b ₂ , c ₂ , d ₂ , a ₃ ,....

The order of arrangement of the linear images of the original images is determined according to the order of recording (photographing) parallax of the original images. For example, the photographing position is changed from left to right to original images a → d.
When the linear image is recorded, as shown in FIG. 3, when the lenticular recording material F is put on the front (the same state as when viewing), the linear image is recorded from the original image a → d to the left → right. The linear images are sequentially arranged.

The arrangement of the linear images is based on the set main subject (for example, reference numeral 28 in FIG. 2) and the three-dimensional image finally formed on the recording layer D according to the front and back of the original image. When the image is viewed through the lenticular sheet C, it is needless to say that the image is formed so as to be a suitable stereoscopic image.

The linear images of the original images arranged in a predetermined order are then transferred to the image information processing device 26. In the image information processing device 26, the number of the formed linear images (or the number of read scanning lines) n, the pitch P of the lenticular sheet C, the recording magnification m (or the size of the original image and the recorded image are set and set). ), The number of original images o, the beam spot system d of the light beam L, etc., and the recording specifications such as the total number of lenticular lenses N and the number of linear image repetition pitches α of linear images are set. , And transfers the image information to the image forming apparatus 14. Table 1 below shows an example of a specification of recording a stereoscopic image corresponding to various conditions in the recording apparatus of the present invention. In addition, the example shown in Table 1 is a case where the read scanning line of each original image is used as it is as a linear image.

Table 1 │ │ │ Example 1 │ Example 2 │ Example 3 │ ├───── │ │ number of original images o │ 4 │ 4 │ 2 │ ├──────────────┼ │ │ Original image width w │ 15 │ 15 │ 15 │ ├──────────────┼───┼───┼── │ │Number of scanning lines (linear images) n│1000│500│2000││││Record Magnification m = W / w │ 6.7 │ 6.7 │ 6.7 │ │ │ Stereoscopic image recording width W │ 100 │ 100 │ 100 │ │ │ Lenticular sheet pitch P│ 0.1 │ 0.1 │ 0.1 │ │Total number of wrenches used N = W / P │ 1000 │ 1000 │ 1000 │ ├──── │ │Maximum linear image width D = P / o │ 0.025│ 0.025│ 0.05 │ ├──────── │ │ Beam spot diameter d │ 0.025│ 0.025│ 0.05 │ ├──────────────┼─── │ │Number of repetitive pitches of the linear image α │ 1 │ 2 │ 1/2 │ └──────────────┴───┴─── ┴───┘

In Table 1 above, the total number of wrench N used is the number of pitches of a lenticular sheet usable for recording a stereoscopic image, and the number α of repetition pitches of a linear image is the number of pitches for recording the same linear image. Are respectively shown.

As shown in Table 1, the maximum linear image width D
When the total wrench N (= W / P) used is equal to the number n of linear images (Example 1 in Table 1), and the beam spot diameter d is equal, one for each pitch of the lenticular sheet. A linear image is recorded. On the other hand, when the number n of linear images is smaller than the total wrench N used (Example 2 in Table 1), the same linear image is repeatedly recorded at a plurality of pitches (two pitches in Example 2). When the number n of the linear images is larger than the total wrench N used (Example 3 in Table 1), the linear images are recorded by thinning out the linear images (the number is reduced to 1/2 in Example 3).

Incidentally, the recording magnification m may be set by the original image width w and the stereoscopic image recording width W, or the stereoscopic image recording width W is set by the original image width w and the recording magnification m. You may.

In the recording apparatus 10 of the present invention, such a linear image processing apparatus 20 is not limited to being provided only in the recording apparatus 10; for example, one linear image processing apparatus is provided for each original image. There may be more than one, such as one each. Further, the processed image information may be stored in a memory (line memory) for each original image, and transferred to the image forming apparatus from here.

The image forming means 14 includes the linear image processing device 2
The light beam modulated according to the linear image transferred from 0 is deflected in the main scanning direction (x direction), and the lenticular recording material F is transported in the sub scanning direction (y direction) substantially orthogonal to the main scanning direction. By doing so, the lenticular recording material F is two-dimensionally scanned from the back side to record a stereoscopic image, and the light sources 32R, 32G, and 32 of three light beams are used.
Using B, the light beams emitted from each light source are combined into one light beam, deflected in the main scanning direction by the polygon mirror 34, and the lenticular recording material F is scanned and exposed from the back side.

In the image forming means 14, the linear image information transferred from the linear image processing device 20 is first transferred to the exposure control circuit 30. The exposure control circuit 30 receives linear image information from the image processing device 26, that is, information of an R (red) signal, a G (green) signal, and a B (blue) signal, and according to the image information signal, A / A conversion, various exposure corrections and signal processing are performed to calculate the exposure of each pixel for one line for each color, and each light source 32 (3
2R, 32G, 32B), the exposure amount (modulation amount) of each pixel for one line is determined, and the image information signal is transferred to the nonlinear amplifier 35.

The non-linear amplifier 35 is mainly for compensating for the non-linearity of the AOM (acousto-optic modulator) 39. The image information signal corrected by the non-linear amplifier 35 is AO
The data is transferred to the drive circuit 37 (37R, 37G, 37B) of the M39, and the AOM 39 (39R, 39G, 39B) is driven.

On the other hand, the light source 32 is a photosensitive layer provided on the recording layer D of the lenticular recording material F, for example, a red (R)
A light beam light source that emits light of a narrow band wavelength for exposing the photosensitive layer, the green (G) photosensitive layer, and the proof (B) photosensitive layer (see FIG. 9), wherein the light source 32R is the R photosensitive material of the lenticular recording material F the light beam L _R of exposing the layer, the light source 32
G is a light beam L _G for exposing the same G photosensitive layer, the light source 32B
The light beam L _B for exposing the same B photosensitive layer, is injected at a constant output, respectively.

The light source of the light beam used in the present invention is not particularly limited, and any light source such as a gas laser such as a He—Ne laser, various solid-state lasers, semiconductor lasers, and LEDs can be used. What is necessary is just to select suitably according to the recording layer D etc. of the lenticular recording material F. For example, if the recording layer D of the lenticular recording material F has a spectral sensitivity in the visible light region, the He- layer corresponding to the R photosensitive layer
Ne laser, Ar laser corresponding to G photosensitive layer, and B
A He-Cd laser or the like corresponding to the photosensitive layer is suitably used as a light source. When the recording layer is a color false recording material, a semiconductor laser (LD) or the like is suitably used as a light source. Further, a light valve or the like may be used.

[0063] Each light beam L _R emitted from the light sources 32, L _G, and L _B is the beam expander and the like arranged corresponding to the respective shaping means 40 (40
R, 40G, 40B) to adjust the light beam diameter and the like.

Next, the light beams L _R , L _G and L
_B is the corresponding AOM39 (39R, 39R)
G, 39B). Here, since each AOM 39 is driven according to an image (linear image) to be recorded,
The intensity of each light beam incident on the corresponding AOM 39 is modulated according to the image to be recorded. Note that the optical modulator used in the recording apparatus 10 of the present invention is A in the illustrated example.
It is not limited to the OM39, and any of various optical modulators such as a magneto-optical modulator and an electric engineering modulator can be applied.

Each light beam modulated by the AOM 39 is transmitted to the dichroic mirrors 42 and 44 and the mirror 4
The light beam L is multiplexed into one light beam L by the light beam multiplexing system composed of 6. The dichroic mirror 42 in the light beam combining system characteristics to reflect light beams of the wavelength of the light beam L _R other is transmitted, The dichroic mirror 44 reflects the reflection wavelength of the light beam of the light beam L _G Te other are those having a characteristic of transmitting the light beam L _B is reflected by the mirror 46, dichroic transmitted through the dichroic mirror 42 and 44, the light beam L _G dichroic mirror 4 is reflected by the dichroic mirror 44
2, the light beam _LR is reflected by the dichroic mirror 42, and the three light beams are combined into one light beam L.

The combined light beam L then enters a polygon mirror 34, which is an optical deflector, and is deflected in the main scanning direction (arrow x direction). The optical deflector used in the recording apparatus of the present invention is not limited to the polygon mirror 34 in the illustrated example, and any of various known optical deflectors such as a galvanometer mirror and a resonant scanner may be used. In addition, if necessary, a tilt correction optical system of the polygon mirror 34 such as a cylindrical lens or a cylindrical mirror may be provided with the polygon mirror 34 (optical deflector) interposed therebetween.

The present invention is not limited to a so-called multiplex type optical system for recording an image by multiplexing a plurality of light beams as shown in the illustrated example. Is incident on substantially the same point on the reflection surface of the polygon mirror 34 at slightly different angles, is deflected in the main scanning direction, forms an image at different positions on the same scanning line SL on the lenticular recording material F, and Or a non-multiplexing method in which three types of light beams travel at slightly different angles from each other and are incident on substantially the same point on the lenticular recording material F. An optical system may be used.

The light beam L deflected in the main scanning direction is given by f
The θ lens 48 is adjusted so as to form an image at a predetermined position on the lenticular recording material F with a predetermined beam diameter, is reflected in a predetermined direction by the falling mirror 49, and has a predetermined shape on the rear surface side of the lenticular recording material F. The light enters the position to define the scanning line SL and exposes the photosensitive layer D.

Here, the lenticular recording material F is substantially orthogonal to the main scanning direction by a sub-scanning conveyance means (not shown) in a state where the generatrix direction of the lenticular sheet C (the longitudinal direction of the lenticular lens) and the main scanning direction are substantially coincident. In the sub-scanning direction (direction of arrow y). Therefore, the light beam L can consequently scan and expose the lenticular recording material F two-dimensionally, and as shown in FIG. 3 (the main scanning direction is perpendicular to the drawing), in accordance with image information set by Jo image processing apparatus 20, the linear images of each original _{image, a 1, b 1, c} 1, d 1, a 2,
b ₂ ,... are sequentially recorded in a predetermined order.

The linear image of each original image is not limited to the one recorded by one scan of the light beam L, and one linear image is formed by scanning the light beam a plurality of times according to the set width of the linear image. An image may be recorded. It is needless to say that scanning lines SL for at least the number of original images need to be defined within the pitch P of the lenticular recording material F.

In image recording for obtaining a stereoscopic view using the lenticular sheet C, it is known that it is effective to widen the line width of the recorded linear image by an appropriate amount (line width expansion). Preferably, the pitch P is filled with no gap or overlap by the linear image of each original image, that is,
In the illustrated example, it is preferable to enlarge the line width of each linear image so that a ₁ + b ₁ + c ₁ + d ₁ = P. The method for adjusting the line width of the linear image is not particularly limited. A method for forming one linear image by performing multiple scans, and a method for recording a linear image in one scan using a beam expander or the like. Is an example of a method for expanding the diameter of a light beam.

The sub-scanning conveyance means for the lenticular recording material F is not particularly limited.
A method using two nip roller pairs, a method using an exposure drum supporting the lenticular recording material F and two nip rollers arranged to sandwich the scanning line SL and pressing the exposure drum, and fixing the lenticular recording material F at a predetermined position by suction or the like Method using an exposure table moved by a screw transmission device and the like, a method using a belt conveyor, etc.
Any known method of transporting various sheet-like materials may be used.

The recording device 10 shown in FIG.
Although the light beam is modulated by an optical modulator such as the light modulator 9, the present invention is not limited to this, and the light emission of the light source 32 may be modulated by pulse width modulation. May be electrically modulated. FIG. 4 shows an example of a recording apparatus using such pulse width modulation. Note that, in the example shown in FIG.
Since they have basically the same configuration except for the difference between the light beam modulation method and the light beam modulation method, the same members are denoted by the same reference numerals and detailed description thereof will be omitted.

In the example shown in FIG. 4, each light source 32 (32R, 32R) is determined by the exposure control circuit 30.
G, 32B), the exposure of each pixel for one line is
The data is transferred to the modulation circuit 36. The modulation circuit 36 modulates the pulse width of the light emitted from the light source 32 in a predetermined repetition cycle set in advance, for example, in one pixel cycle.
In the pulse width modulation in this image exposure method, the light output of the light source 32, which is the light source, is set to be constant, and the time during which the light source 32 continuously emits light within one pixel period, that is, one time (one pixel) The continuous exposure time is output to the drive circuit 38.

Drive circuit 38 (38R, 38G, 38B)
Is a driving circuit for driving the light source 32. In the case of pulse width modulation, the driving circuit
A driving current corresponding to a light output preset for each light source is supplied to the light source 32. As a result, the light source 32 emits light with a light output preset for each light source for a time determined for each light source according to the i-pixel. This is performed over one line, and the light source 32 performs one-line exposure.

Each light beam L _R emitted from the light source 32,
L _G, and L _B are shaping means 40 which are arranged corresponding to each (40R, 40G, 40B) is shaped by, then the light beam multiplexing of one by later-described light beam combining system, similar The lenticular recording material F is exposed by scanning.

As described above, the recording apparatus 10 operates in the main scanning direction.
The image is recorded on the lenticular recording material F moving in the sub-scanning direction by the light beam L deflected in the sub-scanning direction. Where the book
In the present invention, the image processing is relatively easy.
High-quality 3D images that can continuously record
Lenticular sheet C
Is recorded with the generatrix direction as the main scanning direction. for that reason,
When recording is performed in the same manner as ordinary light beam scanning recording, the scanning line SL defined by the light beam L is inclined with respect to the generatrix of the lenticular sheet C as a result.

In a normal image recording apparatus, the displacement of the scanning line SL does not cause a serious problem. However, in the recording of a three-dimensional image using the lenticular sheet C as in the present invention, the scanning line SL The displacement of the SL causes a large deterioration in image quality. In addition, when the sub-scanning speed of the lenticular recording material F is higher than the main scanning speed of the light beam L, or when the pitch P of the lenticular sheet is small, the scanning line The SL may be defined over two pitches. Therefore, the deviation angle of the scanning line SL is calculated from the relationship between the sub-scanning speed and the main scanning speed, and the main scanning direction x of the light beam L is set at an angle θ such that the scanning line SL coincides with the generatrix direction. To record images.

As shown in FIG. 5, when the width of the lenticular recording material F in the main scanning direction is H, the sub-scanning speed is V, and the main scanning speed is v, the scanning start and end points of the light beam L are Can be expressed by the following equation: Δy = H × (V / v). Therefore, the angle θ of the scanning line SL defined is θ = Δy / H = V / v. By setting the main scanning direction x in consideration of the angle θ, the scanning line SL defined by the light beam L
And the generatrix of the lenticular sheet C can be made substantially coincident with each other, and a good stereoscopic image can be recorded. This adjustment may be performed by adjusting the angle of the lenticular recording material F.

In the three-dimensional image recording using the lenticular sheet C, in order to obtain a good three-dimensional image, a predetermined linear image (four linear images in the illustrated example) must be accurately set within the pitch P of the lenticular sheet C. ) Is important. Therefore, in the present invention, it is preferable to have a positioning unit for image recording of the lenticular recording material F. In the illustrated recording apparatus 10 and the like, a positioning unit 16 based on light detection is provided.

In the recording apparatus 10, the positioning means 16 uses the light emitting element 50 and the detection light 56 (see FIG. 6) from the emitting element 50, which are arranged at both ends of the lenticular recording material F in the main scanning direction. It comprises a light receiving element 52 for receiving light, and a recording position control circuit 54 connected to the light receiving element 52. The recording position control circuit 54 is connected to the exposure control circuit 30.

In the positioning means 16 in the illustrated example, the light emitting element 50 emits, for example, detection light 56 parallel to the generatrix direction of the lenticular sheet C between the convex portions formed by the lenticular lens as shown in FIG. Inject into the position where it exits. The detection light 56 preferably has a wavelength or a light amount that does not expose the recording layer D. Here, since the lenticular recording material F is conveyed at a predetermined speed in the sub-scanning direction (the direction of the arrow y), the detection light 56 is periodically intercepted by the lenticular sheet C (lenticular lens) and received by the light receiving element 52. The amount of detected light 56 is
It changes according to this cycle.

The recording position control circuit 54 detects (counts) a change in the amount of light of the detection light 56, and when the number of changes in the amount of light reaches a predetermined number, that is, the lenticular recording material F is conveyed to a predetermined position. Then, an image recording start signal is sent to the exposure control circuit 30. The exposure control circuit 30
Upon receiving the start signal, transfer of image information is started so that image recording by the light beam L is started from a predetermined position.
After that, image information corresponding to the pitch of the lenticular sheet is transferred for each pitch P (each lenticular lens) of the lenticular sheet according to the detection signal of each lenticular lens.

The generation of the image recording start signal by the recording position control circuit 54 is not limited to the one that counts the change in light amount. For example, the detection light 56 is first blocked by the lenticular recording material F and changed to the light amount. Thereafter, a start signal may be generated after a predetermined time has elapsed. In this case, the detection light 56 does not need to pass through the convex portion formed by the lenticular lens, and when the lenticular recording material F is conveyed to a predetermined position, the detection light 56 is blocked by the lenticular recording material F. The light-emitting element 50 and the light-receiving element 52 may be arranged at the same time. Further, a method of detecting the unevenness of the lenticular sheet C by itself or by air, or a method of forming a sprocket hole or a notch in the lenticular recording material F is used.
0 and the light receiving element 52 may be arranged to adjust the recording position based on a change in the amount of light caused by the detection light 56 passing through the detection means.

In the recording apparatus 10 of the present invention, the image recording position aligning means is not limited to the method using light detection in the illustrated example, but may be a method for detecting sprocket holes, notches, and other detecting means by a mechanical method. A method of arranging an encoder or the like on a transport roller or the like of the lenticular recording material F to detect the position of the recording material and performing the image recording position adjustment is also suitably exemplified.

[0086] Such alignment of image recording may be performed only at the start of recording, or, as described above, detection by light detection or the like is performed periodically or continuously, and the detection result is fed back. Then, the position of the image recording may be periodically or continuously performed.

The recording apparatus 10 described above uses the light beam L
Is deflected in the main scanning direction, and the lenticular recording material F is conveyed in the sub-scanning direction, thereby scanning and exposing the lenticular recording material F to record a stereoscopic image. There is no limitation. By changing the angle of an optical deflector such as the polygon mirror 34 or the galvanometer mirror in the sub-scanning direction while the lenticular recording material F is fixed at a predetermined position, the scanning line SL by the light beam is changed. The stereoscopic image may be recorded on the entire surface of the lenticular recording material F by moving in the sub-scanning direction. Alternatively, as in the example shown in FIG. 1, when a falling mirror 49 for the light beam L is provided, the angle of the mirror 49 in the sub-scanning direction is adjusted to perform the sub-scanning of the light beam L. You may. Further, a mirror or the like for sub-scanning of the light beam L may be separately provided.

Further, as shown in FIG. 7, the lenticular recording material F is fixed on a cylindrical drum 58, and the light beam L is incident on a predetermined exposure position while the drum 58 is moved in the main scanning direction (x direction). And the lenticular recording material F is moved in the sub-scanning direction (the direction of the arrow y).
A so-called drum scanner that performs sub-scanning and main scanning with the (drum 58) and two-dimensionally scans the lenticular recording material F with the light beam L may be used. Also in this case, the sub-scanning is not performed by moving the drum 58 in the y direction, but by deflecting the angle of the optical deflector or the mirror in the sub-scanning direction, or by sub-scanning the optical system of the light beam L. The sub-scan may be performed by the light beam L by moving in the direction.

In the example described above, four original images a to d are read by one or a plurality of reading devices 18.
And a three-dimensional image (linear image) is recorded line-sequentially on the lenticular recording material F. However, the present invention is not limited to this, and one or more original images can be read. Alternatively, the recording of the three-dimensional image may be performed by alternately recording the linear image.

In this case, for example, the original image a is read first, and the image processing means 12 performs the same image processing as before, that is, image processing such as formation of a predetermined linear image and determination of a recording position. The image information of the original image a is sent to the image forming means 14. In the image forming means 14, the linear image of the decomposed original image a is placed at a predetermined position on the lenticular recording material F, that is, in accordance with the image information.
In the example shown in FIG. 3, the linear images a ₁ , a ₂ ,
a ₃ , a ₄ ... are sequentially recorded. When the recording of the original image a is completed in this manner, the reading and recording of the original images b, c,... Are sequentially performed in the same manner, and the recording of the stereoscopic image is completed.

Note that such image recording is the same when reading and recording a plurality of original images less than the total number of original images. Further, such image recording may be performed after reading all the original images.

The reading of the original image and the image recording may be performed in parallel. When one scanning line or one linear image of the original image a is read by the reading device 18, the image information is sequentially transferred to the image processing unit 12 to form and arrange the linear images (determination of the recording position). ) Is performed, and the processed image information is sequentially transferred to the image forming unit 14. Upon receiving the image information, the image forming means 14 forms a linear image in accordance with the transmitted image information, and as shown in FIG. 3 as a ₁ , a ₂ , a ₃ , a ₄ . The recording of the linear image of the image a is performed. That is,
In this embodiment, 1 to 1 for reading the original image a
Recording of a linear image is performed in parallel with a delay of several scanning lines.

Further, when the image processing means 12 for the number of original images (or the linear image processing apparatus 20 for the number of original images in one reading device 18) is provided, a plurality of original images are read simultaneously or sequentially. Then, processing is performed by a separate linear image processing device 20 for each original image, and the image forming means 14 and the linear image processing device 20 are switched and connected sequentially by recording a linear image using a switcher or the like. The linear image information of each original image is represented by a ₁ , b ₁ , c ₁ , d ₁ , a ₂ , b ₂ ,.
.. May be sequentially transferred to the image forming means 14 and may be recorded on the lenticular recording material F line by line. This embodiment is applicable even when the number of the image processing means 12 (the linear image processing device 20) is equal to or less than the number of original images.

Further, the recording apparatus 10 of the present invention may have a plurality of image forming means 14 and record a plurality of linear images in parallel. In particular, in the case where the same number of original images as image processing means 12 and image forming means 14 are provided and reading of all original images and recording of linear images are performed at the same time, recording of an extremely efficient three-dimensional image is performed. It can be carried out.

The above-described stereoscopic image recording of the present invention
The apparatus 10 has a configuration in which the image processing unit 12 and the image forming unit 14 and the like are connected, but the present invention is not limited to this, and the image processing unit 12 and the image forming unit 14
The image information output from the image processing means 12 is stored in a recording medium such as a floppy disk or an optical disk, and the linear image information of the original image is transmitted to the image forming means via the recording medium. May be supplied. Further, the image processing means 12 may not have the reading device 18 in particular, and may obtain image information of the original image from a recording medium such as a computer, a floppy disk, or a separate reading device such as a scanner.

As described in detail above, the three-dimensional structure of the present invention
The image recording apparatus records a stereoscopic image from the back side of the lenticular recording material. Accordingly, a lenticular recording material corresponding to this has a recording layer D provided on the back side of the lenticular sheet C as shown in FIG. 9 and an antihalation layer A between the lenticular sheet C and the recording layer D.
It is preferable to have a configuration in which H is arranged .

In a normal lenticular recording material, since an image is exposed (printed) through a lenticular sheet, an antihalation layer for preventing irregular reflection of exposure light passing through the recording layer is formed on the back side of the lenticular recording material. Is done. On the other hand, in the present invention, as shown in FIG. 3, since a stereoscopic image is recorded from the back side of the lenticular recording material F, the lenticular recording material F has an antihalation layer AH, an R photosensitive layer, It is formed between a lenticular sheet C and a recording layer D composed of a photosensitive layer and a B photosensitive layer. Note that the antihalation layer AH is not particularly limited, and may be any known various one.

It is also preferable that the photosensitive layer corresponding to each of the colors R, G and B formed on the recording layer of the lenticular recording material has a structure opposite to that of the ordinary recording layer D. As this arrangement, B photosensitive layer than the surface shown in FIG. 8, G
In addition to the configuration in which the respective photosensitive layers are formed in the order of the photosensitive layer and the R photosensitive layer, a configuration in which the respective photosensitive layers are similarly formed in the order of the G photosensitive layer, the B photosensitive layer, and the R photosensitive layer is also preferably exemplified. .

With the lenticular recording material F having such a configuration, even when a stereoscopic image is recorded from the back side, it is possible to perform favorable image recording while preventing image blur due to halation. In addition, since the exposure is performed directly on the photosensitive layer D without the intervention of the lenticular sheet C, there is no reflection or absorption of the light beam by the lenticular sheet C, and clear and turbid image recording is possible. Images can be made natural and of high quality.

Further, since the recording apparatus of the present invention performs recording (exposure) from the back side of the lenticular recording material F without the intervention of the lenticular sheet C, the adverse effect of the lenticular sheet C such as absorption and reflection of a light beam is considered. No need. Therefore, as the lenticular sheet C, a lenticular sheet of a known material such as PET (polyethylene terephthalate), PC (polycarbonate), polypropylene, etc. having high transparency, as well as PVC (polyvinyl chloride), which is slightly inexpensive but inexpensive, is used. Various applications are possible.

The method of producing such a lenticular recording material F is not particularly limited. For example, after forming an antihalation layer AH by a method such as coating using a lenticular sheet C as a base layer, an R photosensitive layer, a G photosensitive The layer and the recording layer D composed of the B photosensitive layer may be formed in the same manner as a normal recording material. Alternatively, after the antihalation layer AH is similarly formed on the lenticular sheet C, various color recording materials may be attached.

The lenticular recording material F on which a three-dimensional image has been recorded from the back side in this manner is subjected to a development process in accordance with the type of the recording material (photosensitive layer). Is done. Further, after the image recording is completed, before and / or after the development processing, if necessary,
On the back surface of the lenticular recording material F, a white layer of titanium oxide or the like, various protective layers, or the like may be formed.

Although the three-dimensional image recording apparatus of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the gist of the present invention. It goes without saying that it may be performed.

[0104]

As described in detail above, the present invention has been described in detail.
According to the body image recording apparatus, since the image can be directly recorded on the lenticular recording material having the recording layer on the back surface of the lenticular sheet, after recording the image on the recording material, the recording material and the lenticular sheet can be highly accurately recorded. It is not necessary to perform such a labor and time-consuming operation of aligning and bonding the three-dimensional image, and recording of a three-dimensional image can be performed with extremely high efficiency with respect to a conventional three-dimensional image recording apparatus using scanning exposure. Moreover, the thickness, interval, density, etc. of the linear image can be changed by electrical image information processing and simple optical system adjustment, and the image recording area, image density, etc. can be changed or adjusted. Can also be easily performed. Therefore, it is possible to easily cope with image processing such as a change in magnification and shading of a recorded image, a change in specifications of a lenticular sheet, a change in the size of a recorded image, and uneven exposure due to vignetting of a lenticular sheet (lens). Image degradation can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram conceptually illustrating an example of a stereoscopic image recording apparatus according to the present invention.

FIG. 2 is a diagram conceptually showing formation of a linear image of an original image in the three-dimensional image recording apparatus shown in FIG.

FIG. 3 is a view conceptually showing recording of a linear image on a lenticular recording material in the stereoscopic image recording apparatus shown in FIG.

FIG. 4 is a diagram conceptually showing another example of the stereoscopic image recording device of the present invention.

FIG. 5 is a diagram for explaining a method of correcting a scanning line with respect to a generating line in the three-dimensional image recording apparatus shown in FIG. 1;

FIG. 6 is a conceptual diagram for explaining an image recording position adjusting unit in the stereoscopic image recording apparatus shown in FIG.

FIG. 7 is a schematic perspective view showing another example of main scanning and sub-scanning means used in the stereoscopic image recording apparatus of the present invention.

FIG. 8 is preferably used in the stereoscopic image recording apparatus of the present invention .
FIG. 2 is a view conceptually showing a lenticular recording material.

FIG. 9 shows an image recording on a conventional lenticular recording material.
FIG.

FIG. 10 shows an image recorded on a lenticular recording material .
It is a diagram showing the principle of stereoscopic vision.

FIG. 11 shows a conventional stereoscopic image production operation by scanning exposure .
FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 stereoscopic image recording device 12 image processing means 14 image forming means 16 positioning means 18 reading device 20 linear image processing device 21 front image processing device 22 division device 24 array device 26 image processing device 28 main subject 30 exposure control circuit 32 (32R, 32G, 32B) light source 34 polygon mirror 35 non-linear amplifier 36 (36R, 36G, 36B) modulation circuit 37 (37R, 37G, 37B) drive circuit 38 (38R, 38G, 38B) drive circuit 39 (39R, 39G, 39B) Acousto-optic modulator (A
OM) 40 (40R, 40G, 40B) shaping means 42, 44 Dichroic mirror 46 Mirror 48 fθ lens 49 Falling mirror 50 Light emitting element 52 Light receiving element 54 Recording position control circuit 56 Detection light 58 Drum C Lenticular sheet D Recording layer F Lenticular Recording material AH Antihalation layer

Claims (1)

(57) [Claims] 1. A three-dimensional image recording apparatus for recording a plurality of original images from different viewpoints on a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet, wherein image information of the plurality of original images is provided. And forming a linear image to be recorded for each of the original images, and recording the linear images according to the recording conditions of each of the original images so that the completed stereoscopic image can be correctly viewed when viewed from the lenticular sheet side. An image processing means for determining a recording position on the layer and outputting it as linear image information; a light beam modulated according to the linear image information output from the image processing means in a one-dimensional manner in the main scanning direction. Deflect to
And means for relatively moving means for injection, and a light beam deflected in the main scanning direction as the lenticular recording material in the sub-scanning direction substantially orthogonal to the main scanning direction
With the main scanning speed and the sub-scanning direction of the light beam.
Scan defined by the light beam, depending on the moving speed
Line should match the direction of the generatrix of the lenticular sheet
In the main scanning direction or the lenticular recording material
A three-dimensional image recording apparatus comprising: an image forming unit that adjusts an angle of the lenticular recording material by exposing the recording layer of the lenticular recording material from the back surface by the light beam; and a unit that positions an image to be recorded on the lenticular recording material.