JP3454023B2 - Holographic stereogram recording medium, holographic stereogram, method for producing the same, and holographic stereogram producing apparatus used for the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a holographic device.
Related to stereogram recording medium and a holographic stereogram, further relates to a holographic stereogram producing apparatus using a manufacturing method thereof as well as this.

[0002]

2. Description of the Related Art One holographic stereogram
One real object is sequentially photographed from different observation points, and a large number (for example, several hundreds) of images thus obtained are used as original images, and these are sequentially recorded as striped or dot-shaped interference fringes on one hologram recording medium. It is produced by

For example, in a holographic stereogram having parallax information only in the horizontal direction, as shown in FIG. 13, each original image 102A obtained by sequentially photographing one real object 101 from different observation points in the horizontal direction. -10
Es are recorded as hologram pieces in the form of strips, which are sequentially arranged on the hologram recording medium 103.

Thus, in this type of holographic stereogram, the two-dimensional image reflected by the right and left eyes of the observer when viewed with both eyes is slightly different, which allows the observer to feel parallax. Thus, the observer can recognize the reproduced image as if it appears in a stereoscopic manner (that is, the reproduced image is like a three-dimensional image).

FIG. 14 shows an example of the configuration of a printer device (hereinafter referred to as a holographic stereogram printer device) adapted to produce such a holographic stereogram. .

In this holographic stereogram printer device 110, a large number of image data D1 obtained by photographing a real object in the lateral direction while sequentially changing the observation points are taken.
Or a plurality of CADs created by sequentially providing parallax in the horizontal direction
(Computer Aided Design) image, CG (Computer Graphics) image, or other image data D2 of a rendering image is processed based on image data D5 obtained from the LCD (Liquid C
The holographic stereogram can be produced by driving the vertical display 111 and sequentially recording the respective images based on the respective image data D5 on the recording medium 112 for hologram as strip-shaped hologram pieces.

In practice, in the holographic stereogram printer device 110, a separately provided system control unit (not shown) drives the LCD 111 based on one image data of the obtained plurality of image data D5. An image based on the image data D5 is displayed on the LCD 111, and at this time, the system control unit sends a control signal S1 to the shutter 113 to drive the shutter 113 to open the laser beam L1 emitted from the laser light source 114. Shutter 113, half mirror 1
The light is incident on the spatial filter 117 via the mirror 15 and the mirror 116 in order.

This laser light L1 is magnified by the spatial filter 117 and the collimator lens 118,
After being converted into projection light corresponding to the image displayed on the LCD 111 by passing through the LCD 111, the light is incident on the collimator lens 120 via the condenser lens 119,
After being laterally compressed by the collimator lens 120, the light enters the hologram recording medium 112 held by the electric stage 121.

At this time, the hologram recording medium 112
At the incident position of the laser light L1 on the half mirror 1
The laser light Ll reflected at 15 is the cylindrical lens 122, the collimator lens 123, and the mirror 124.
Hologram recording medium 112 as reference light through
Is incident at a predetermined angle from the back side of the. In this case, the optical path length of the reference light is almost the same as the optical path length of the laser light Ll (hereinafter, referred to as object light) which is transmitted through the half mirror 115 and then enters the hologram recording medium 112 via the mirror 116. Has been selected.

Thus, in the holographic stereogram printer device 110, the object light (projection light) and the reference light can be caused to interfere with each other on the recording surface of the hologram recording medium 112, so that the image displayed on the LCD 111. Can be recorded as a strip of interference fringes on the hologram recording medium 112.

Further, in the holographic stereogram printer device 110, when the recording of the image is finished thereafter, the shutter 113 is operated by the system control unit.
Is driven to block the laser beam L1 emitted from the laser light source 114, the driving of the LCD 111 is stopped, and the motorized stage 1 is controlled by the system controller.
The hologram recording medium 112 is driven by driving the recording medium 112.
Is sent in the direction indicated by the arrow a by the width of one hologram piece.

Thereafter, the LCD 111 is driven under the control of the system control unit to display an image based on the subsequent image data D5, and then the shutter 113 is opened by the system control unit to display the image displayed on the LCD 11l for hologram. The data is recorded on the recording medium 112, and thereafter the same operation is sequentially repeated.

Thus, in the holographic stereogram printer device 110, each image based on each image data of the supplied parallax image sequence can be sequentially recorded in the hologram recording medium 112 in a strip shape, whereby a desired holographic image can be obtained. It is designed so that a stereogram can be obtained.

By the way, in recent years, as a holographic material, a photopolymer material which does not require a developing treatment has come to have excellent photopolymerization characteristics.

In this holographic material, the monomers are uniformly dispersed in the matrix polymer in the initial state, and when the laser light with good coherence is irradiated from this state with a predetermined power, the monomers are polymerized in the exposed portion, and the polymer is polymerized. The monomer concentration changes from place to place due to the movement of the monomer from the surroundings, and the refractive index modulation occurs. Further, this holographic material can complete the polymerization of the monomer by subsequently irradiating the entire surface with ultraviolet rays or visible light with a predetermined power, thus recording interference fringes of laser light as a change in refractive index. it can.

Therefore, by adopting such a holographic material as the image recording layer of the hologram recording medium, it is possible to obtain a high quality holographic stereogram and to develop the holographic material. It is conceivable that a holographic stereogram printer device having a simple structure can be constructed because it does not require.

[0017]

In reproducing the holographic stereogram as described above, the interference fringes recorded on the hologram recording medium have a light ray component having the same wavelength and incident angle as the reference light. By making the illumination light incident, the projection light incident on this recording surface at the time of recording is reproduced. Therefore, in such a holographic stereogram, there is a problem that the reproduced image becomes unclear when the light is transmitted from the side opposite to the incident surface of the illumination light.

Therefore, in view of such conventional circumstances, the present invention provides a holographic stereogram capable of obtaining a clear reproduced image by suppressing the transmission of light from the side opposite to the side where the illumination light is incident. The purpose is to Further, in the present invention, it is also an object to provide a method for producing a holographic stereogram capable of efficiently producing such a holographic stereogram, and to propose a holographic stereogram producing apparatus used for this. To do.

[0019]

A holographic stereogram according to the present invention achieves the above-mentioned object, and is sequentially exposed based on each image data of a parallax image sequence to obtain an image data based on the image data. Each image is sequentially recorded as strip-shaped or dot-shaped element holograms, and the image recording layer made of a holographic material and the surface opposite to the incident surface of illumination light (hereinafter referred to as the front surface) ( Hereinafter, it is referred to as a back surface side) and has a light absorption layer that absorbs illumination light that has passed through the image recording layer.

Here, the light absorption layer has a function of suppressing the transmission of light from the back surface side. Therefore, the light absorption layer needs to be made of a material capable of absorbing light that may enter the back surface side during reproduction of the holographic stereogram. Further, considering that the front surface side of the light absorption layer reflects the illumination light that has passed through the image recording layer, the contrast of the reproduced image decreases and the image becomes unclear. It is preferable that it is made of a material that absorbs. Therefore, when the illumination light and the light that may enter the back surface are both visible light, the light absorption layer is preferably made of a colored and opaque material, particularly a black material.

The light absorbing layer may be a material which is originally colored and opaque, or may be a material which is originally colorless and transparent and is colored by heating.

In the holographic stereogram as described above, when the image recording layer is provided on the substrate, the light absorbing layer is provided on the opposite side of the substrate, but the surface of the image recording layer is provided. In the case where the protective layer is formed on, the light absorption layer may be provided on the protective layer. Further, this light absorption layer may be bonded to the substrate or the protective layer via an adhesive layer. Further, the light absorbing layer itself may also serve as a substrate and be in contact with the image recording layer.

In the holographic stereogram having the above-mentioned structure, as described above, the transmission of light from the back surface is suppressed, or the reflection of illumination light transmitted through the image recording layer is further suppressed. , A clear reproduced image can be obtained.

If the light absorbing layer is made of a material having high rigidity, curling of the holographic stereogram can be suppressed, and after completion of the holographic stereogram, the holographic stereogram does not have to be lined with a smooth plate material or the like. Playback can be performed.

Further, in the holographic stereogram as described above, an adhesive layer coated with a coating material may be formed on the back surface. Since the adhesive layer is exposed on the back surface by peeling off the coating material, such a holographic stereogram can be attached to a desired place and the application range can be expanded.

Here, as the holographic material forming the image recording layer of the above holographic stereogram, any conventionally known holographic material can be used.
The image is recorded as interference fringes by irradiating and exposing the image projection light, and then the exposed portion is heated to enhance the refractive index modulation degree and fix the recorded image, which is preferable. is there. Since such a holographic material does not require development processing after exposure, the manufacturing process and manufacturing apparatus can be simplified.

By the way, in the present invention, a hologram recording medium in which an image has been recorded on the image recording layer, that is, a completed holographic stereogram is assumed. However, when the light absorption layer is composed of a colorless and transparent thermosensitive coloring material that does not develop color by heating (in this case, it does not yet have the function of absorbing light), the technical idea of the present invention It is possible to provide an unrecorded hologram recording medium.

Next, a method for producing a holographic stereogram according to the present invention will be described. This method for producing a holographic stereogram is for efficiently producing the above-mentioned holographic stereogram, and sequentially exposes an image recording layer made of a holographic material based on each image data of a parallax image sequence. By this, a hologram recording step of sequentially recording each image based on the image data as a strip-shaped or dot-shaped element hologram, and a light absorption layer that absorbs illumination light on the side that becomes the back surface in the holographic stereogram after fabrication. And a light absorption layer forming step of forming.

To form the light absorbing layer, a thermosensitive coloring layer is provided on the back surface side of the holographic stereogram after production, and the thermosensitive coloring layer is colored by heating at least after the hologram recording step. Therefore, it is preferable to change the can color forming layer into a light absorbing layer.
Here, this heating step corresponds to the light absorption layer forming step. Thus, if the thermosensitive coloring layer is provided in advance on the unrecorded hologram recording medium, the light absorbing layer can be formed only by heating after recording the image,
The manufacturing process can be simplified and the manufacturing apparatus is not complicated.

In this case, as the holographic material,
An image is recorded as interference fringes by irradiating it with projection light of the image to expose it, and by heating the exposed part, the index of refraction index modulation is enhanced and the recorded image is fixed. It is preferable that the above-mentioned thermosensitive coloring layer is colored at the same time as the heating for increasing the degree and fixing the recorded image. If a holographic material that enhances the refractive index modulation degree and fixes the recorded image by heating is used, the manufacturing process can be simplified because the development process is unnecessary, but it is possible to enhance the refractive index modulation degree and the recorded image fixation. Considering heating up to perform, there is a problem that the manufacturing apparatus becomes large and the process time as a whole increases. However, if the two steps of increasing the refractive index modulation degree, fixing the recorded image, and developing the color of the thermosensitive coloring layer can proceed at the same time by one operation of heating, as a result, the manufacturing apparatus can be simplified and the process time can be reduced. Will be shortened.

In the case of forming the light absorbing layer as described above, at least after the hologram recording step, the adhesive layer coated with the coating material is attached to the side which becomes the back surface in the holographic stereogram after fabrication. An adhesive layer attaching step may be provided. As a result, the produced holographic stereogram can be attached to a desired place. Here, the adhesive layer attaching step may be performed before or after the light absorbing layer forming step as long as it is after the hologram recording step. This is because the light absorption layer forming step is a heating step and can be performed even after the adhesive layer attaching step is completed.

Further, in the method for producing a holographic stereogram according to the present invention, in order to form the light absorbing layer, at least after the hologram recording step, the side to be the back surface in the produced holographic stereogram is illuminated. A material that absorbs light may be applied. As a method of depositing a material that absorbs illumination light, vapor deposition, sputtering, CVD (chemical vapor deposition), etc. can be mentioned in addition to coating and printing, but it can be performed at room temperature and atmospheric pressure and does not complicate the manufacturing apparatus. Applying or printing is realistic. In this way, if the light absorption layer forming step is continuously performed after the hologram recording step, the manufacturing process can be simplified and the process time can be shortened.

When the light absorbing layer is formed in this manner, at least after the light absorbing layer forming step, the adhesive layer coated with the coating material is attached to the side which becomes the back surface in the holographic stereogram after fabrication. You may provide the adhesive layer adhesion process which is made. As a result, the produced holographic stereogram can be attached to a desired place.

Further, in the method for producing a holographic stereogram according to the present invention, in order to form the light absorption layer, at least after the hologram recording step, the side to be the back surface in the produced holographic stereogram is illuminated. A light absorbing material that absorbs light may be attached via an adhesive layer. In this way, if the light absorption layer forming step is continuously performed after the hologram recording step, the manufacturing process can be simplified and the process time can be shortened.

In this case, at least after the hologram recording step, a substrate peeling step of peeling the substrate supporting the image recording layer from the image recording layer may be performed. When the holographic material constituting the image recording layer requires a reaction of contacting with air (nitrogen) under heating conditions for enhancing the refractive index modulation degree and fixing of the recorded image, the image is heated during the heating. The recording layer can be exposed, and the time required for enhancing the refractive index modulation degree and fixing the recorded image can be shortened. Even if the substrate is peeled off in this way, the light absorbing material is bonded instead and the image recording layer is supported, so that the strength of the holographic stereogram is not deteriorated.

When the light absorbing layer is formed by bonding the light absorbing material through the adhesive layer in this way, the adhesive force for adhering the light absorbing material is made larger than the cohesive force of the holographic material itself. Is suitable. This makes it difficult to peel off the light absorbing layer from the holographic stereogram without damaging the recorded image, so that the recorded image can be prevented from being duplicated.

The light absorbing material used here may be provided with an adhesive layer coated with a coating material on the side opposite to the surface facing the image recording layer. This makes it possible to obtain a holographic stereogram that can be attached to a desired place without newly providing an adhesive layer attaching step. Of course, the light absorbing layer forming step and the adhesive layer attaching step may be performed separately.

Next, the holographic stereogram producing apparatus according to the present invention will be described. This manufacturing apparatus is for realizing the above-described method of manufacturing the holographic stereogram, and by sequentially exposing the image recording layer made of the holographic material based on each image data of the parallax image sequence, the image data Holographic recording means for sequentially recording each image based on the above as a strip-shaped or dot-shaped element hologram, and light for forming a light-absorbing layer that absorbs illumination light on the side that becomes the back surface in the holographic stereogram after fabrication. And an absorption layer forming means.

Here, the light absorbing layer forming means is a heating means, and is suitable for developing the color of the thermosensitive coloring layer provided on the back surface side in the holographic stereogram after fabrication.

As a holographic material, an image is recorded as interference fringes by irradiating it with projection light of an image and exposing it, and heating the exposed portion enhances the refractive index modulation degree and fixes the recorded image. When a material is used, it is preferable that the heating means for enhancing the refractive index modulation degree and fixing the recorded image also serve as the heating means for developing the color of the thermosensitive coloring layer. Thus, the two steps of enhancing the refractive index modulation degree, fixing the recorded image, and coloring the thermosensitive coloring layer can proceed simultaneously by one heating means, which simplifies the apparatus and shortens the process time. Can be planned.

In this holographic stereogram producing apparatus, in order to attach the adhesive layer coated with the coating material on at least the rear side of the hologram recording means, the back surface side of the produced holographic stereogram. Adhesive layer attaching means may be provided.

Further, in the holographic stereogram producing apparatus according to the present invention, the light absorption layer forming means is
It may be a coating or printing means for applying a material that absorbs illumination light to the back surface side of the holographic stereogram after fabrication.

Also in this holographic stereogram producing apparatus, an adhesive layer coated with a coating material is attached at least to the rear side of the coating or printing means on the back surface side of the produced holographic stereogram. Adhesive layer attaching means may be provided.

Further, in the holographic stereogram producing apparatus according to the present invention, the light absorbing layer forming means comprises a light absorbing material that absorbs illumination light on the back surface side of the produced holographic stereogram. It may be a laminating means for laminating via.

In this case, at least the rear side of the hologram recording means may be provided with a substrate separating means for separating the substrate supporting the image recording layer from the substrate.

The light absorbing material used here may have an adhesive layer coated with a coating material on the side opposite to the surface facing the image recording layer.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a holographic stereogram, a method for producing the holographic stereogram, and a holographic stereogram producing apparatus used for the holographic stereogram according to the present invention will be described below with reference to the drawings.

<Holographic Stereogram> The holographic stereogram according to the present invention is sequentially exposed based on each image data of the parallax image sequence so that each image based on the image data is sequentially striped or dot-shaped. What is recorded as an element hologram, that is, a holographic stereogram, absorbs the image recording layer made of a holographic material and the illumination light provided on the back surface side that has not been diffracted by the image recording layer. And a light absorption layer.

First Embodiment FIG. 1 shows a holographic stereogram 10-1 according to this embodiment. This holographic stereogram 10-1 comprises an image recording layer 2 made of a holographic material on a substrate 1 made of a colorless transparent resin film.
Is formed, and a light absorbing layer 3 that is colored and opaque and absorbs illumination light is formed on the surface of the substrate 1 opposite to the surface on which the image recording layer 2 is formed. A protective layer 4 made of a colorless transparent resin is provided on the image recording layer 2.

Here, the substrate 1 is made of a colorless transparent resin film as described above, but when the predetermined recording is performed on the image recording layer 2, before the projection light is incident on the image recording layer 2. Since the light is transmitted through the substrate 1, optical characteristics such as low light scattering, low birefringence (or directional orientation that preserves the polarization plane), and high light transmittance are required. Here, a substrate 1 made of DuPont and having a trade name: Mylar having a thickness of 50 μm was used.

The image recording layer 2 may be composed of any of the heretofore known holographic materials, but after the image is recorded as interference fringes by irradiating it with projection light of the image to expose it, this exposed portion is exposed. It is preferable that the temperature is increased to enhance the degree of refractive index modulation and fix the recorded image.

Here, as the holographic material,
An image recording layer 2 having a thickness of 20 μm was formed by using OMNI-DEX (trade name, manufactured by Deu Pont). In this holographic material, as shown in FIG. 2A, in the initial state, the monomers 25 are uniformly dispersed in the matrix polymer, and from this state, laser light having good coherence is obtained as shown in FIG. 2B. When L2 is irradiated with a predetermined power (10 to 400 mJ / cm ² ), the monomer 25 is polymerized in the exposed portion, and the monomer 25 moves from the surrounding as it becomes a polymer, so that the monomer concentration changes depending on the place, and the refractive index modulation occurs. . This holographic material will be shown in FIG.
As shown in (C), the polymerization of the monomer 25 can be completed by irradiating the entire surface with ultraviolet light or visible light L3 with a predetermined power (1000 mJ / cm ² ), and the interference fringes of the laser light L2 are It can be recorded as a change.

Therefore, when the image recording layer 2 is made of such a holographic material, it is possible to obtain a high quality holographic stereogram, and the holographic material is not required to be developed, so that the manufacturing process is simplified. And the configuration of the three-dimensional image device used for this is simplified.

Since the light absorption layer 3 must be made of a material capable of absorbing the light that may enter the back surface side and the illumination light that has passed through the image recording layer 2 during reproduction of the holographic stereogram. , A colored and opaque resin film capable of absorbing visible light. This light absorption layer 3
May be composed of a material which is originally colored and opaque, or may be composed of a material which is originally colorless and transparent and which is colored by being heated.

The transparent heat-sensitive film, which is originally colorless and transparent and develops a color when heated, can be formed by applying heat-responsive microcapsules. When one of the materials that develop color by reacting two components is included in the thermoresponsive microcapsules, color development can be performed by heating the microcapsules to a temperature of Tg or higher. In this case, since the melting point of the coloring material does not trigger the coloring, it is not necessary to allow the coloring material before heating to exist as crystals. Therefore, the color-forming material can be present in a transparent solution or in an amorphous state, and a transparent heat-sensitive film can be formed by applying the color-forming material on a transparent film. As a combination of color-forming materials, any of conventionally known materials can be used. Here, the diazonium salt compound is incorporated into a thermoresponsive microcapsule having a Tg of 100 ° C., and the substrate 1 together with the coupler is used.
Applied on top.

When the light absorbing layer 3 is originally made of a colored and opaque material, it may be formed by performing a predetermined recording on the image recording layer 2 and then applying or printing. Since the heat-sensitive color-developing material which was originally colorless and transparent is used here, the heat-sensitive color-developing material is formed integrally with the substrate 1, and the image-recording layer 2 provided on the other surface of the substrate 1 After predetermined recording was performed, the color was developed by heating.

The light absorbing layer 3 as described above suppresses the transmission of light from the back surface side and also absorbs the light that has not been diffracted by the image recording layer in the illumination light. It is also possible to suppress reflection of light transmitted through the recording layer 2.

As described above, the protective layer 4 is made of a colorless and transparent resin, but when the predetermined recording is performed on the image recording layer 2, the protective layer is formed before the reference light enters the image recording layer 2. Since the light passes through No. 4, it is necessary to strictly control its optical characteristics. Here, product name: My made by DuPont
The protective layer 4 having a thickness of 25 μm was formed using lar.

In the holographic stereogram 10-1 having the above-described structure, since the light absorption layer 3 is provided, the image transmitted from the back surface side and the illumination light from the front surface side are imaged. Reflection of light that has not been diffracted by the recording layer 2 is suppressed, and a clear reproduced image is obtained.

Second Embodiment FIG. 3 shows a holographic stereogram 10-2 according to this embodiment. This holographic stereogram 10-1 is substantially the same as the holographic stereogram 10-1 shown in the first embodiment except that an adhesive layer is interposed between the substrate 1 and the light absorption layer 3. It has a similar configuration.

The materials constituting the substrate 1, the image recording layer 2 and the protective layer 4 are the same as those shown in the first embodiment, and therefore their explanations are omitted.

The light absorbing layer 3 may be made of a material which is originally colored and opaque, or may be made of a material which is originally colorless and transparent and which is colored by being heated, but here it is originally made. It was composed of colored and opaque black paper.

The light absorbing layer 3 is formed by performing predetermined recording on the image recording layer 2 and then bonding black paper to the back surface of the substrate 1 via the adhesive layer 5. When the light absorbing layer 3 is originally composed of a colorless and transparent thermosensitive coloring material, predetermined recording is performed on the image recording layer 2 and then the thermosensitive coloring material is bonded via the adhesive layer 5. rear,
Further, the color is developed by heating.

Since the light absorbing layer 3 as described above suppresses the transmission of light from the back surface side and also absorbs the illumination light,
On the front surface side, it is possible to suppress the reflection of illumination light that has passed through the image recording layer 2.

The adhesive layer 5 interposed between the light absorbing layer 3 and the substrate 1 may be made of a material having an adhesive property to both the light absorbing layer 3 and the substrate 1, and is conventionally known. Any of the above adhesives and the like can be used. The adhesive layer 5
If the adhesive force between the light-absorbing layer 3 and the substrate 1 due to the holographic material is made larger than the cohesive force of the holographic material itself, the holographic stereogram 10-2 can be used without damaging the recorded image. Since it becomes difficult to peel off No. 3, it is possible to prevent the recorded image from being duplicated.

Also in the holographic stereogram 10-2 having the above-mentioned structure, the light absorption layer 3 suppresses the transmission of light from the back surface side and the reflection of the illumination light from the front surface side, and therefore a clear image is obtained. A reproduced image is obtained.

As a modification of the present embodiment, FIG.
Holographic stereogram 10 as shown in
-3 is mentioned. This holographic stereogram 10-3 is the holographic stereogram 1 shown in the second embodiment except that the base 1 is omitted.
It has the same configuration as 0-2.

This holographic stereogram 10
-3 is, for example, after performing a predetermined recording on the image recording layer 2, the substrate 1 is peeled from the image recording layer 2, and then the light absorbing layer 3 made of black paper or the like via the adhesive layer 5. Are formed by bonding.

When a thermosensitive coloring material which is originally colorless and transparent is used as the light absorbing layer 3, the image recording layer 2 is formed directly on the thermosensitive coloring material, and the image recording layer 2 is provided with a predetermined color. After recording, the heat-sensitive color material may be colored by heating, and in this case, although not shown, the holographic stereogram 10-3 shown in FIG. It becomes the holographic stereogram.

As described above, in the case where the substrate 1 is omitted and the light absorption layer 3 also serves as the substrate 1, it is preferable to use a material having a certain degree of rigidity as the light absorption layer 3. . Regardless of the configuration of this holographic stereogram, curling of the holographic stereogram can be suppressed by using a highly rigid material for the light absorption layer 3, and a smooth plate material or the like can be used after the completion of the holographic stereogram. Reproduction can be performed without performing processing such as lining.

Third Embodiment In this embodiment, as shown in FIG. 5, the back surface of the holographic stereogram 10-1 shown in FIG. 1 in the first embodiment is coated. The holographic stereogram 10-4 in which the adhesive layer 7 covered with the material 6 is formed will be described.

The materials constituting the substrate 1, the image recording layer 2, the light absorbing layer 3 and the protective layer 4 are the same as those shown in the first embodiment, and therefore their explanations are omitted.

The covering material 6 is provided so as not to expose the adhesive layer 7, and is provided so that the adhesive layer 7 can be peeled off while remaining on the back surface of the holographic stereogram 10-4 when necessary. . Therefore, at least the surface of the covering material 6 facing the adhesive layer 7 needs to have an appropriate adhesive force with respect to the material forming the adhesive layer 7. As such a material, any of those conventionally used for this type of purpose can be used, but here, polyethylene terephthalate (PET) is used.
A film was used.

The adhesive layer 7 has a holographic stereogram 1 formed by peeling off the covering material 6 when necessary.
The holographic stereogram 10-4 is exposed on the back surface of 0-4 and can be attached to a desired place. Therefore, the adhesive layer 7 is unlikely to adhere to the covering material 6 when the covering material 6 is peeled off,
The holographic stereogram 10-4 should remain on the side of the holographic stereogram 10-4.
It is necessary that the adhesive strength is optimized so that the material to which -4 is attached cannot be easily peeled off. As such a material, any material that has been conventionally used for this kind of purpose can be used, but here, an adhesive made of Sumitomo 3M, trade name: Y4929 was used.

The coating material 6 and the adhesive layer 7 are
Holographic stereogram 10-shown in FIG.
After making 1, this holographic stereogram 10
It may be formed by attaching the adhesive layer 7 coated with the coating material 6 to the back surface of -1. However, when the light absorbing layer 3 is made of a thermosensitive coloring material, the coating material 6 and the adhesive layer 7 may be provided before the color is developed by heating, that is, before the light absorbing layer 3 is formed. Good.

Also in the holographic stereogram 10-4 having the above-mentioned structure, the light absorption layer 3 naturally transmits the light from the back surface side and the image of the illumination light from the front surface side. Since the reflection of light that has not been diffracted by the recording layer 2 is suppressed, a clear reproduced image can be obtained. Further, if the covering material 6 is peeled off, the adhesive layer 7 is formed on the back surface
Since it can be exposed, it can be attached to a desired place and the application range is expanded.

As a modified example of this embodiment, the second
In the above embodiment, the holographic stereograms 10-2 and 10-3 shown in FIGS. 3 and 4 may be provided with the adhesive layer 7 coated with the coating material 6 on the back surface. When making such a holographic stereogram, the holographic stereogram 1
After producing 0-2 and 10-3, the covering material 6 was formed on the back surface of the holographic stereograms 10-2 and 10-3.
The coating material 6 and the adhesive layer 7 may be provided by adhering the adhesive layer 7 coated with the coating material 6. However, the back surface of the black paper or the like forming the light absorbing layer 3 is coated with the coating material 6 in advance. The adhesive layer 7 may be provided so that the black paper or the like is adhered to the substrate 1 or the image recording layer 2 and at the same time the coating material 6 and the adhesive layer 7 are provided.

Although the holographic stereogram according to the present invention has been described above, it goes without saying that the present invention is not limited to the above-mentioned embodiments.
Various modifications and changes are possible. For example, in the above-described embodiment, when the image recording layer 2 is provided on the substrate 1, the light absorbing layer 3 is provided on the opposite surface side of the substrate 1, but the surface of the image recording layer 2 is protected. If the layer 5 is formed, the light absorption layer 3 may be provided on the protective layer 5.

Further, in the present invention, a hologram recording medium in which recording of an image on the image recording layer is completed, that is, a completed holographic stereogram is assumed.
However, when the light absorption layer is composed of a colorless and transparent thermosensitive coloring material that does not develop color by heating (in this case, it does not yet have the function of absorbing light), the technical idea of the present invention It is also possible to provide an unrecorded hologram recording medium.

<Method for producing holographic stereogram and apparatus for producing holographic stereogram> The method for producing holographic stereogram according to the present invention is for obtaining the holographic stereogram as described above. A hologram recording step of sequentially recording each image based on the image data as a strip-shaped or dot-shaped element hologram by sequentially exposing the image recording layer made of a holographic material based on each image data of the parallax image sequence, In the holographic stereogram after fabrication, a light absorbing layer forming step of forming a light absorbing layer that absorbs illumination light is provided on the side that becomes the back surface.

Further, the holographic stereogram producing apparatus according to the present invention is used to realize the above-mentioned producing method, and an image recording layer made of a holographic material is used for each image data of a parallax image sequence. By sequentially exposing each image based on the image data as a strip-shaped or dot-shaped element hologram, and absorbing the illumination light on the back surface side of the holographic stereogram after fabrication. And a light absorbing layer forming means for forming the light absorbing layer.

First, a holographic stereogram producing apparatus to which the present invention is applied will be described.
This holographic stereogram producing device is shown in FIG.
This corresponds to the holographic stereogram printer device 53 in the hologram printer system 50 shown in FIG.

This hologram printer system 50 is
It comprises a data processing unit 51, a control computer 52, and a holographic stereogram printer device 53.

The data processing unit 51 photographs the real object output from the parallax image sequence photographing device 54 from a plurality of observation points in different lateral directions (for example, simultaneous photographing by a multi-lens camera or continuous photographing by a moving camera). A parallax image sequence is generated based on the image data D1 for a plurality of images obtained by performing the above or each image data D2 of the plurality of rendering images created by sequentially providing parallax in the horizontal direction, which is output from the computer 55. Then, each image data D3 of the parallax image sequence
Then, after performing a predetermined hologram image processing to obtain the hologram image data D4, these are temporarily recorded in the recording medium 56 such as a memory or a hard disk.

Further, during the subsequent exposure operation, the data processing section 51 sequentially reads out each image data D4 of the parallax image sequence recorded on the recording medium 56, and sequentially reads out each read image data D5. It is sent to the control computer 52.

The control computer 52, during the exposure operation,
Based on each image data D5 of the parallax image sequence supplied from the data processing unit 51, the shutter 13, LCD 11, and printer head unit (not shown) of the holographic stereogram printer device 53 are drive-controlled.

The holographic stereogram printer device 53 is shown in FIG. 7 in which parts corresponding to those in FIG.
Has a configuration as shown in FIG. 1, and the LC based on the image data D5 supplied from the control computer 52 described above.
By driving D11, each image based on each image data D5 is sequentially recorded on the hologram recording medium 58 as a strip-shaped hologram piece to produce a holographic stereogram.

Specifically, by driving the LCD 11 based on one image data of the image data D5 supplied from the control computer 52, the LCD
11 displays an image based on the image data D5, and sends a control signal S1 from the control computer 52 to the shutter 13 to drive the shutter 13 so as to open it, thereby shuttering the laser light L1 emitted from the laser light source 14. 13, the half mirror 15 and the mirror 16 are sequentially made to enter the spatial filter 17.

This laser beam L1 is magnified by the spatial filter 17 and the collimator lens 18, and LC
After being converted into projection light corresponding to the image displayed on the LCD 11 by passing through D11, the condenser lens 19
The light enters the collimator lens 20 via the, is laterally compressed by the collimator lens 20, and then enters the hologram recording medium 58 held by the printer head unit 57.

At this time, this hologram recording medium 58
At the incident position of the laser light L1 on the half mirror 1
The laser light Ll reflected at 5 is incident as a reference light through the cylindrical lens 22, the collimator lens 23, and the mirror 24 from the back surface side of the hologram recording medium 58 at a predetermined angle. In this case, the optical path length of the reference light is the laser light L that passes through the half mirror 15 and then enters the hologram recording medium 58 via the mirror 16.
The length is selected to be substantially the same as the optical path length of l (hereinafter, referred to as object light).

Thus, in the holographic stereogram printer device 53, the object light (projection light) and the reference light can be caused to interfere with each other on the recording surface of the hologram recording medium 58, whereby the image displayed on the LCD 11 is displayed. Can be recorded on the hologram recording medium 58 in the form of strips as interference fringes.

Further, in the holographic stereogram printer device 53, when the recording of this image is finished thereafter, the shutter 13 is driven by the control computer 52 and the laser light L1 emitted from the laser light source 14 is emitted.
Is shielded from light, the drive of the LCD 11 is stopped, the printer head 57 is driven under the control of the control computer 52, and the hologram recording medium 58 is fed by the width of one hologram piece.

Thereafter, the LCD 11 is driven by the control of the control computer 52 to display an image based on the subsequent image data D5, and then the shutter 13 is opened by the control of the control computer 52 to display the image displayed on the LCD 11. Is recorded on the hologram recording medium 58, and thereafter the same operation is sequentially repeated.

In this way, in the holographic stereogram printer device 53, each image based on each image data of the supplied parallax image sequence can be sequentially recorded in the hologram recording medium 58 in the form of a strip. You can get the holographic stereogram of.

The printer head section 57 will be described in more detail below with reference to FIG. The printer head unit 57 rotatably supports a roller 70 in a film cartridge 71 mounted at a predetermined position with a predetermined torque, and intermittently holds a hologram recording medium 58 pulled out from the film cartridge 71. The feeding roller 72 and the roller 73 are sandwiched so as to be held, whereby the hologram recording medium 5 is held.
8 can be positioned perpendicular to the object light (laser light L1) between the roller 70 and the intermittent feed roller 72.

In this case, the roller 70 and the intermittent feed roller 72 are urged in directions away from each other by a torsion coil spring (not shown).
Also, a predetermined tensile force tension can be applied to the hologram recording medium 58 loaded so as to be stretched over the intermittent feeding rollers 72.

Further, between the roller 70 and the intermittent feeding roller 72, an optical member 76 made of a rigid body integrally bonded in a curved state of the one-dimensional diffusion plate 74 and the louver film 75 is located at the incident position of the object light. It is arranged corresponding to. The optical component 76 is held by an optical component driving mechanism (not shown) so as to be movable in a direction of approaching or separating from the hologram recording medium 58 as indicated by an arrow b.

In this case, the optical component driving mechanism drives the optical component 76 based on the control signal S2 supplied from the control computer 52 (FIG. 6) before the exposure operation is started, so that the optical component 76 approaches the hologram recording medium 58. By moving the optical component 76 to the position where the object light is incident on the hologram recording medium 58 loaded between the roller 70 and the intermittent feed roller 72.

As a result, in the holographic stereogram printer device 53, the optical component 76 can suppress the minute vibration of the hologram recording medium 58 between the roller 70 and the intermittent feeding roller 72, which makes it bright ( A holographic stereogram with high diffraction efficiency can be obtained.

For this reason, the tip of the optical component 76 in contact with the hologram recording medium 58 is provided with a crown-shaped curvature so that both ends and the central portion are projected, whereby the tip of the optical component 76 concerned. Portions of the hologram recording medium 58 are evenly contacted with both ends and the central portion in the width direction of the hologram recording medium 58, and small vibrations of the hologram recording medium 58 between the roller 70 and the intermittent feeding roller 72 are surely biased in the width direction. It is designed so that it can be suppressed to.

On the other hand, the intermittent feed roller 72 can freely rotate in the direction indicated by arrow c based on the rotational force output from a stepping motor (not shown). In this case, this stepping motor uses the intermittent feed roller 7 at the end of each exposure of one image based on the control signal S2 supplied from the control computer 52 (FIG. 6).
2 is sequentially rotated by a predetermined angle, whereby the hologram recording medium 58 can be fed by one hologram piece.

Further, an ultraviolet lamp 77 is disposed along the path of the hologram recording medium 58 after the intermittent feed roller 72 in the path, so that the intermittent feed roller 72 sends the ultraviolet lamp. The monomer 25 (FIG. 2) is applied to the exposed portion of the incoming recording medium 58 for hologram.
The ultraviolet ray L3 for terminating the diffusion of the light can be irradiated with a predetermined power.

Further, in the path of the hologram recording medium 58, a heat roller 78 which is rotatably supported and a pair of feed rollers 7 for feeding and discharging are provided at a stage subsequent to the ultraviolet lamp 77.
9A and 79B and a cutter 80 are sequentially arranged.
Here, the discharge feed rollers 79A and 79B are configured to hold the hologram recording medium 58 such that the hologram recording medium 58 is wound around the peripheral surface of the heat roller 78 in a state of being in close contact with the peripheral surface of the heat roller 78 for a half circumference.

In this case, the heat roller 78 is internally provided with a heat generating means (not shown) such as a heater.
This allows the peripheral surface to maintain a temperature of about 120 ° C.

This setting includes a heating plate whose temperature is controlled so that the photopolymerized photopolymer (OMN1-DEX) after exposure is kept at a constant temperature of 120 ° C., and a glass plate which is pressed by a spring force from the upper side. It was confirmed by an experiment that the same degree of refractive index modulation as that in the case of heating in an atmosphere at 120 ° C. for 2 hours can be obtained by sandwiching it between and heating for 5 minutes. Therefore, in the printer head portion 57, the exposed portion of the image recording layer 2 in the hologram recording medium 58 as shown in FIG. 1 is heated by the heat roller 78 via the protective layer 4, so that the refractive index thereof is increased. It is possible to increase the degree of modulation and fix the recorded image.

Therefore, the outer diameter of the heat roller 78 is selected so that it takes time for the recorded image to be fixed before the hologram recording medium 58 comes into contact with the circumferential surface of the heat roller 78 until it is separated. By heat roller 78
The image recorded on the hologram recording medium 58 that has passed through is surely fixed.

Further, a drive mechanism (not shown) of the discharge feed rollers 79A and 79B (hereinafter, referred to as a discharge feed roller drive mechanism) has a control computer 52 (see FIG. 6) when the hologram recording medium 58 is intermittently fed. ) Based on the control signal S2 output from
9B is rotated in synchronization with the intermittent feed roller 72. As a result, the hologram recording medium 58 is transferred to the intermittent feeding roller 72 and the ejection feeding roller 7
9A and 79B, the heat roller 78 can be securely held in a tightly contacted state with the peripheral surface without being loosened.

Further, a drive mechanism (not shown) of the cutter 80 (hereinafter, referred to as a cutter drive mechanism) makes a desired hologram recording medium 58 based on the control signal S2 supplied from the control computer 52 (FIG. 6). After the image is recorded, the cutter 80 is driven when all the area of the hologram recording medium 58 on which the image is recorded is discharged to the outside of the cutter 80, and this part is separated from other parts. It is something to do. As a result, the portion of the hologram recording medium 58 where the image is recorded is
It can be discharged as a holographic stereogram.

By the way, in the holographic stereogram producing apparatus according to the present invention, as described above,
The holographic stereogram 58 after fabrication is characterized in that it has a light absorbing layer forming means for forming the light absorbing layer 3 on the side which becomes the back surface. This light absorbing layer forming means is the above-mentioned printer head. It is provided in the section 57. Therefore, the printer head unit 5 will be described below.
As a configuration example of 7, the embodiment of the holographic stereogram producing apparatus according to the present invention will be described. The operation of the holographic stereogram producing apparatus according to each embodiment will be described to show an embodiment of the holographic stereogram producing method according to the present invention.

Fourth Embodiment A holographic stereogram producing apparatus according to the present embodiment is provided with a heating means as a light absorption layer forming means. The method for producing a holographic stereogram according to the present embodiment is performed by using this holographic stereogram producing apparatus, and a thermosensitive coloring layer is previously provided on the back surface side as the hologram recording medium 58. The heat-sensitive color-developing layer is colored by the above-mentioned heating means to form the light-absorbing layer 3. That is, the present embodiment is
It is applied to produce the holographic stereogram 10-1 shown in FIG. 1 described in the first embodiment.

Printer head unit 57 used in the holographic stereogram producing apparatus according to the present embodiment.
-1 is as shown in FIG. This is because the heat roller 78 shown in FIG. 8 also serves as the heating means provided as the light absorption layer forming means.

Also, the hologram recording medium 58 wound around the roll 70 of the printer head portion 57-1.
Is the holographic stereogram 1 shown in FIG.
The desired recording is not yet performed on the image recording layer 2 of 0-1 and the light absorbing layer 3 is a colorless and transparent thermosensitive coloring layer that does not yet have a function of absorbing light. Is.

As described above, the heat roller 78 winds and holds the hologram recording medium 58 around its peripheral surface, and heats the exposed portion of the image recording layer 2 in the hologram recording medium 58 via the protective layer 4. Thus, the refractive index modulation degree is increased and the recorded image is fixed. Therefore, this heat roller 7
If the hologram recording medium 58 is held on the peripheral surface of 8,
Of course, the thermosensitive coloring layer provided on the back surface side of the hologram recording medium 58 is also heated. Here, the temperature of the peripheral surface of the heat roller 78 is set to about 120 ° C. in order to increase the degree of refractive index modulation and to fix the recorded image.
The microcapsule wall containing the diazonium salt compound, which is a coloring material, is softened, and the thermosensitive coloring layer can be sufficiently colored. The outer diameter of the heat roller 78 is such that not only the recorded image can be fixed until the hologram recording medium 58 comes into contact with the peripheral surface of the heat roller 78 until it is separated, but also the thermosensitive coloring layer is sufficiently colored. Selected to take time.

Actually, in order to produce the holographic stereogram 10-1 by the holographic stereogram printer device 53 having the printer head portion 57-1 having such a structure, first, the image recording layer 2 is still desired. The same as the holographic stereogram 10-1 in FIG. 1, except that no recording is made and the light absorbing layer 3 is a colorless and transparent thermosensitive coloring layer that does not yet have the function of absorbing light. The hologram recording medium 58 having the structure is stored in the film cartridge 71 while being wound around the roller 70.

Then, with the hologram recording medium 58 loaded between the roller 70 and the intermittent feed roller 72, the control signal S2 is sent from the control computer 52 to the optical component drive mechanism of the printer head portion 57-1. Then, the optical component drive mechanism is driven to drive the optical component 76.
The curved front end of is pressed against the hologram recording medium 58 with a predetermined pressure.

Next, the image data D5 based on each image of the parallax image sequence is supplied from the control computer 52 to the LCD 11, and the LCD 11 is driven to generate the image data D5.
The image based on 5 is displayed.

Further, by sending a control signal S2 from the control computer 52 to the shutter 13 to open the shutter 13, the laser light L1 emitted from the laser light source 14 is transmitted through the LCD 11 and the hologram recording medium described above. It is incident on 58. At this time, the laser light L1
After being emitted from the laser light source 14, the shutter 13,
The half mirror 15, the mirror 16, the spatial filter 17, and the collimator lens 18 are sequentially passed through as described above, whereby the light enters the hologram recording medium 58 as object light (projection light). Further, half of the laser light L1 emitted from the laser light source 14 and incident on the half mirror 15 through the shutter is reflected, and is passed through the cylindrical lens 22, the collimator lens 23, and the mirror 24 in this order, and then the hologram recording medium 58. Is incident on the back surface side as reference light.

In this way, the projection light and the reference light are made to interfere with each other on the hologram recording medium 58 and exposed, whereby the image displayed on the LCD 11 is recorded in the hologram recording medium 58 in the form of strips as interference fringes. Let

When the recording of this image is completed, the shutter 13 is closed by the control of the control computer 52 to shut off the laser light L1 emitted from the laser light source 14, and the driving of the LCD 11 is stopped.

Further, by sending a control signal S2 from the control computer 52 to the stepping motor of the printer head portion 57-1 and the discharging feed roller driving mechanism to drive them, the hologram recording medium 58 is moved to the 1st position. Send only hologram pieces.

After that, an operation of displaying an image based on the image data D5 on the LCD 11, an operation of opening the shutter 13 to cause the projection light and the reference light to interfere with each other on the hologram recording medium 58, and exposing, and a stepping motor. The recording medium for hologram 5 by the discharge feed roller drive mechanism
By repeating the operation of sending 8 by one hologram piece, each image data D5 based on each image of the parallax image sequence supplied from the data processing unit 51 is sequentially recorded in the hologram recording medium 58 in a strip shape. Go.

At this time, in the printer head portion 57-1, the hologram recording medium 5 by the projection light and the reference light is used.
UV lamp 7 on the rear side of the exposed area
7, the hologram recording medium 5 that is sequentially intermittently fed.
The entire surface of 8 is irradiated with the ultraviolet ray L3. As a result, in the hologram recording medium 58, as shown in FIG. 2, the monomer 25 in the exposed portion of the image recording layer 2 is recorded.
Polymerization is completed.

The hologram recording medium 58 is heated by the heat roller 78 on the stage subsequent to the ultraviolet lamp 77. As a result, the degree of refractive index modulation of the image recording layer 2 is increased and the recorded image is fixed. Further, here, since the thermosensitive coloring layer is provided on the back surface side of the hologram recording medium 58, this also heats and develops color at the same time. That is, the light absorbing layer 3 is formed on the back surface side of the hologram recording medium 58, and the holographic stereogram 10-1 as shown in FIG. 1 is formed.

At the stage subsequent to the heat roller 78, the cutter driving mechanism is driven based on the control signal S2 supplied from the control computer 52, and the cutter 80 is driven.
Completed holographic stereogram 10
-1 is cut into a desired size and discharged to the outside.

In the holographic stereogram producing apparatus as described above, the desired recording is not yet made on the image recording layer 2, and the light absorbing layer 3 does not yet have the function of absorbing light. Holographic stereogram 10-1 of FIG.
When a desired image is recorded on the hologram recording medium 58 having the same structure as described above and the light absorbing layer 3 is formed,
The heat roller 78 used for increasing the degree of refractive index modulation of the image recording layer 2 and fixing the recorded image is also used for coloring the thermosensitive coloring layer.

Therefore, one heat roller 78 allows two steps to proceed simultaneously, so that the apparatus can be simplified and the process time can be shortened.

Although the heat roller 78 is used as the heating means in the present embodiment, an infrared lamp can be used if the refractive index modulation degree can be increased, the recording image can be fixed, and the thermosensitive coloring layer can be sufficiently colored. Conventionally known heating means such as the above may be used.

Fifth Embodiment The holographic stereogram producing apparatus according to the present embodiment has an adhesive layer attaching means for attaching an adhesive layer coated with a coating material to the back surface side of the holographic stereogram. It is provided. The method for producing a holographic stereogram according to the present embodiment is performed using this holographic stereogram producing apparatus, and as shown in the fourth embodiment, the holographic stereogram 10- After producing No. 1, an adhesive layer coated with a coating material is further provided on the back surface side. This embodiment is applied to manufacture the holographic stereogram 10-4 shown in FIG. 5 described in the third embodiment.

In the holographic stereogram producing apparatus according to this embodiment, the printer head section 57-2 shown in FIG. 9 is used.

Since the structure of the printer head portion 57-2 on the upstream side of the heat roller 78 is as described in the fourth embodiment, common members are designated by common reference numerals, and redundant description will be repeated. Is omitted. The configuration of the hologram recording medium 58 held by the printer head unit 57-2 is also the same as that used in the fourth embodiment.

An adhesive layer coated with a coating material on the back surface side of the hologram recording medium 58 is attached on the rear side of the heat roller 78, on the front side of the discharge feed rollers 79A and 79B. Adhesive layer attaching means is provided. Here, a roll 81 is wrapped with a pressure sensitive adhesive film 82 formed by applying a pressure sensitive adhesive of PET film manufactured by Sumitomo 3M under the trade name of Y4929, and the surface of the pressure sensitive adhesive film 82 coated with the pressure sensitive adhesive is a hologram. The recording medium 58 is arranged so as to face the back surface of the recording medium 58 and is sandwiched between the discharge feed rollers 79A and 79B together with the hologram recording medium 58. This forms a holographic stereogram 10-4 as shown in FIG.

The discharge feed rollers 79A, 79
At the rear side of B, the completed holographic stereogram 10-4 is cut into a desired size by the cutter 80 and discharged to the outside, as in the fourth embodiment.

As described above, in the holographic stereogram producing apparatus according to this embodiment, a desired image is recorded and the light absorption layer 3 is recorded only by partially modifying the printer head portion 57 shown in FIG. The holographic stereogram 10-1 shown in FIG. 1 in which the adhesive is formed is further provided with an adhesive layer 7 coated with a coating material 6, and the holographic stereogram 10-1 shown in FIG.
The holographic stereogram 10-4 shown in FIG. Therefore, by using this holographic stereogram producing apparatus, the process from the hologram recording step to the adhesive layer attaching step can be performed smoothly as a series of steps, and the holographic stereogram 10-4 can be efficiently produced.

In this embodiment, the back surface of the holographic stereogram 10-1 having the light absorption layer 3 formed on the back surface as shown in FIG. 1 is further covered with the covering material 6. Although the adhesive layer 7 is provided, the printer head portion 57-2 of FIG. 9 is used to apply the adhesive layer to the holographic stereogram not having the light absorbing layer 3 similarly to the back surface with the coating material. It is also possible to provide.

Further, in the present embodiment, the roll 8
The adhesive film 82 was previously wound around 1, and the adhesive film 82 was adhered to the back surface of the hologram recording medium 58, but the roll 81 was wrapped with a resin film that does not hold the adhesive material, and the hologram recording medium 58 was used.
You may make it apply | coat an adhesive material to this resin film before making it oppose.

Sixth Embodiment The holographic stereogram producing apparatus according to the present embodiment is provided with a coating means for applying a light absorbing material as the light absorbing layer forming means. .
The method for producing a holographic stereogram according to the present embodiment is performed by using this holographic stereogram producing apparatus, and the light absorbing layer is formed on the back surface side of the hologram recording medium 58 by the above-mentioned coating means. 3 is formed. In the present embodiment, the holographic stereogram 1 shown in FIG.
0-1 is used to form the light absorbing layer 3 by recording an image on the image recording layer 2 on which the desired recording is not yet performed and the light absorbing layer 3 is not yet formed. Holographic stereogram 1 shown in 1
0-1 is produced.

Here, in the holographic stereogram producing apparatus, the printer head section 57-3 shown in FIG. 10 is used.

Since the structure of the printer head portion 57-3 on the upstream side of the heat roller 78 is as described in the fourth embodiment, common members are designated by common reference numerals, and redundant description will be repeated. Is omitted. However, the hologram recording medium 58 to be wound around the roll 70 of the printer head portion 57-3 has not yet been subjected to desired recording on the image recording layer 2 in the holographic stereogram 10-1 shown in FIG. In addition, it does not yet have the light absorption layer 3.

Then, on the rear side of the heat roller 78, on the front side of the discharge feed rollers 79A and 79B,
On the back surface side of the hologram recording medium 58, coating means for depositing a light absorbing material is provided. Here, a die coater 83 is provided as a coating means, and a colored and opaque paint as a light absorbing material is ejected toward the back surface of the hologram recording medium 58.

With this, the light absorption layer 3 can be formed, and the holographic stereogram 1 as shown in FIG.
0-1 is formed.

Incidentally, on the rear side of the discharge feed rollers 79A and 79B, the cutter 80 is provided as in the fourth embodiment.
Completed holographic stereogram 10
-1 is cut into a desired size and discharged to the outside.

As described above, the holographic stereogram producing apparatus according to the present embodiment is capable of recording a desired image and generating an optical image only by partially modifying the printer head section 57 as shown in FIG. The absorption layer 3 can be formed, and the holographic stereogram 10-1 shown in FIG.
Can be produced. For this reason, when this holographic stereogram producing apparatus is used, the process from the hologram recording step to the light absorption layer forming step can be smoothly performed as a series of steps, and the holographic stereogram 10-1 can be efficiently produced. .

Although the die coater 83 is provided as the light absorption layer forming means in the present embodiment, any conventionally known coating means such as a gravure roll may be provided.
Further, conventionally known printing means may be provided instead of the coating means. At this time, the printing means is driven based on the control signal S2 sent from the control computer 52 to form the light absorption layer 3 only in a predetermined range on the back surface of the hologram recording medium 58. May be.

Also, the printer head unit 5 as described above
7-3 is further provided with an adhesive layer attaching means as described in the fifth embodiment so that the adhesive layer 7 covered with the coating material 6 can be formed on the back surface as shown in FIG. May be.

Seventh Embodiment The holographic stereogram producing apparatus according to the present embodiment is provided with a laminating means for laminating a light absorbing material with an adhesive as a light absorbing layer forming means. It is a thing. Then, the method for producing a holographic stereogram according to the present embodiment is performed using this holographic stereogram producing apparatus,
The hologram recording medium 5 is formed by the above-mentioned bonding means.
The light absorption layer 3 is formed on the back surface side of 8. In the present embodiment, for the image recording layer 2 in the holographic stereogram 10-2 shown in FIG. 3 in which desired recording is not yet made, and the light absorbing layer 3 is not yet provided, The holographic stereogram 10-2 shown in FIG. 3 is produced by recording an image and forming the light absorption layer 3.

Here, in the holographic stereogram producing apparatus, the printer head section 57-4 shown in FIG. 11 is used.

Since the structure of the printer head portion 57-4 on the upstream side of the heat roller 78 is the same as that described in the fourth embodiment, common members are designated by common reference numerals, and redundant description will be repeated. Is omitted. However, the hologram recording medium 58 wound around the roll 70 of the printer head unit 57-4 has not yet been subjected to desired recording on the image recording layer 2 in the holographic stereogram 10-2 shown in FIG. In addition, the adhesive layer 5 and the light absorption layer 3 are not yet included.

Then, on the rear side of the heat roller 78, on the front side of the discharge feed rollers 79A and 79B,
On the back surface side of the hologram recording medium 58, a bonding means for bonding a light absorbing material with an adhesive is provided. That is, here, a black paper (hereinafter referred to as adhesive paper) 85 to which an adhesive is applied is wound around the roll 84, and the surface of the adhesive paper 85 to which the adhesive is applied is a hologram recording. The recording medium 58 for hologram is sandwiched between the discharge feed rollers 79A and 79B so as to face the back surface of the medium 58.

As a result, the light absorption layer 3 can be formed, and the holographic stereogram 1 as shown in FIG.
0-2 is formed.

Incidentally, on the rear side of the discharge feed rollers 79A and 79B, the cutter 80 is provided as in the fourth embodiment.
Completed holographic stereogram 10
-1 is cut into a desired size and discharged to the outside.

As described above, the holographic stereogram producing apparatus according to the present embodiment can record a desired image and generate an optical image by only partially modifying the printer head portion 57 as shown in FIG. The absorption layer 3 can be formed, and the holographic stereogram 10-2 shown in FIG.
Can be produced. For this reason, when this holographic stereogram producing apparatus is used, the process from the hologram recording step to the light absorption layer forming step can be smoothly performed as a series of steps, and the holographic stereogram 10-1 can be efficiently produced. .

Incidentally, here, the hologram recording medium 5 is used.
When the black paper was adhered to No. 8, the adhesive force was made larger than the cohesive force of the holographic material itself. In the holographic stereogram 10-2 manufactured in this manner, when the light absorption layer 3 is peeled off, the adhesive force is large, so that the recorded image is damaged. That is, from the produced holographic stereogram 10-2 to the light absorption layer 3
It is possible to prevent the recorded image from being peeled off and the recorded image being duplicated.

In this embodiment, the roll 8
4 was wrapped with adhesive paper 85 in advance,
It is also possible to wind a black paper on which no adhesive is applied and to apply the adhesive to this black paper before facing the hologram recording medium 58.

Also, the printer head unit 5 as described above
7-4 is further provided with an adhesive layer attaching means as described in the fifth embodiment, and the covering material 6 is provided on the back surface as shown in the holographic stereogram 10-2 in FIG.
You may make it possible to form the adhesive layer 7 covered by.
Alternatively, if the adhesive layer 7 coated with the coating material 6 is provided in advance on the surface of the black paper opposite to the surface facing the hologram recording medium 58, the hologram recording medium 58 can be obtained.
Black paper is adhered to the back surface of the sheet, that is, the light absorption layer 3
Simultaneously with the formation of, the coating material 6 and the adhesive layer 7 can be formed on the back surface of the hologram recording medium 58.

Furthermore, as a modified example of the present embodiment,
A holographic stereogram producing apparatus having a printer head portion 57-5 as shown in FIG. 12 can be mentioned. In this printer head portion 57-5, the substrate 1 is peeled from the hologram recording medium 58 at the subsequent stage of the intermittent feed roller 72, and the peeled substrate 1 is wound around the roller 86. , And has the same configuration as that shown in FIG.

When such a printer head section 57-5 is used, instead of peeling the substrate 1 from the back surface of the hologram recording medium 58, the light absorbing layer 3 is provided, and the light absorbing layer 3 is the substrate. The holographic stereogram 10 shown in FIG.
3 is produced.

As described above, when the substrate 1 is peeled from the hologram recording medium 58, the image recording layer 2 is exposed when heated by the heat roller 78. Therefore, depending on the material, In some cases, the time required to enhance the degree of refractive index modulation and to fix the recorded image can be shortened.

Although the holographic stereogram producing apparatus according to the present invention and the holographic stereogram producing method using the same have been described above, it goes without saying that the present invention is not limited to the above-described embodiments. Yes. For example, in the above-described embodiment, as the holographic material forming the image recording layer 2 of the hologram recording medium 58, OMNI-D manufactured by Dyupon Co., Ltd. is used.
Although the case where EX is applied has been described, the present invention is not limited to this, and the image is recorded as interference fringes by performing exposure by irradiating projection light of the image, and then the refractive index modulation degree is enhanced and recorded. Various other holographic materials can be applied as long as the holographic material is designed to heat the exposed portion in the atmosphere for fixing the image.

Further, in the above-mentioned embodiments, the case where the present invention is applied to the production of the holographic stereogram having the parallax information only in the horizontal direction has been described. However, the present invention is not limited to this, and the parallax information in the vertical direction is used. The present invention can also be applied to the production of a holographic stereogram having the same or a holographic stereogram having parallax information in both the horizontal and vertical directions.

Further, in the above-mentioned embodiments, the monochromatic holographic stereogram has been described, but the present invention can be applied to a color holographic stereogram in exactly the same manner. When creating a color holographic stereogram, for example, three lights that are the three primary colors of light may be used as recording lights. Then, when reproducing a color holographic stereogram recorded using three lights which are the three primary colors of light, three light sources are provided in the image reproducing device so as to emit the three primary colors of light, and The light may be simultaneously applied to the holographic stereogram as reproduction illumination light. However, when using a plurality of light sources in this way, it is necessary to construct an optical system so that the light from each light source becomes parallel.
Even when reproducing a color holographic stereogram, it is preferable to use a light source with high color purity for each light source because transmission type reproduction has weak wavelength selectivity. It becomes possible to reproduce the stereogram clearly.

In addition, the incident direction of the reference light in the holographic stereo printer device, the number, types, and combinations of lenses are not limited to those described above, and can be changed as appropriate.

[0162]

As is apparent from the above description, in the holographic stereogram according to the present invention,
The transmission of light from the side opposite to the incident surface of the illumination light is suppressed, and a clear reproduced image can be obtained.

When the method for producing a holographic stereogram according to the present invention and the holographic stereogram producing apparatus according to the present invention are applied, the excellent holographic stereogram as described above can be produced efficiently. Become.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a configuration example of a holographic stereogram according to the present invention.

FIG. 2 is a schematic diagram showing a photosensitive process of a holographic material.

FIG. 3 is a schematic cross-sectional view showing another configuration example of the holographic stereogram according to the present invention.

FIG. 4 is a schematic cross-sectional view showing still another configuration example of the holographic stereogram according to the present invention.

FIG. 5 is a schematic cross-sectional view showing still another configuration example of the holographic stereogram according to the present invention.

FIG. 6 is a schematic diagram showing an overall configuration of a hologram printer system to which the present invention is applied.

7 is a schematic diagram showing a configuration of a holographic stereo printer device which is a main part of the hologram printer system of FIG.

8 is a schematic diagram showing a configuration example of a printer head unit in the holographic stereo printer device of FIG.

FIG. 9 is a schematic diagram illustrating another configuration example of the printer head unit.

FIG. 10 is a schematic diagram showing still another configuration example of the printer head unit.

FIG. 11 is a schematic diagram showing still another configuration example of the printer head unit.

FIG. 12 is a schematic diagram showing still another configuration example of the printer head unit.

FIG. 13 is a schematic diagram for explaining a procedure for producing a holographic stereogram.

FIG. 14 is a schematic diagram showing a configuration example of a conventional holographic stereo printer device.

[Explanation of symbols]

1 substrate, 2 image recording layer, 3 light absorbing layer, 4
Protective layer, 5 adhesive layer, 6 covering material, 7 adhesive layer,
10 Holographic Stereogram, 50 Hologram Printer System, 51 Data Processing Unit, 5
2 control computer, 53 holographic stereo printer device, 57 printer head section, 5
8 recording medium for hologram, 78 heat roller,
82 adhesive film, 83 die coater, 85 adhesive paper

Claims (25)

(57) [Claims] 1. A holographic stereogram recording medium in which each image based on the image data is sequentially recorded as a strip-shaped or dot-shaped element hologram by being sequentially exposed based on each image data of a parallax image sequence. Of the holographic material and the light which is provided on the side opposite to the incident surface of the illumination light and which absorbs the illumination light that has been colored by heating the thermosensitive coloring material and has passed through the image recording layer. A recording medium for a holographic stereogram, which has an absorption layer. 2. An adhesive layer is interposed between the light absorbing layer and the image recording layer.
The recording medium for the holographic stereogram described. 3. The recording medium for holographic stereograms according to claim 1, wherein an adhesive layer coated with a coating material is formed on the side opposite to the illumination light incident surface. 4. The holographic material is irradiated with projection light of an image and exposed to thereby record an image as interference fringes. By heating the exposed portion, the refractive index modulation degree is enhanced and the recorded image is fixed. The recording medium for holographic stereograms according to claim 1, wherein 5. A holographic stereogram in which each image based on the image data is sequentially recorded as strip-shaped or dot-shaped element holograms by being sequentially exposed based on each image data of a parallax image sequence, An image recording layer made of a holographic material, and a light absorbing layer provided on the side opposite to the incident surface of the illumination light for absorbing the illumination light passing through the image recording layer, wherein the light absorbing layer is a thermosensitive coloring. The material was heated and developed color
A holographic stereogram characterized by. 6. An adhesive layer is interposed between the light absorbing layer and the image recording layer.
The described holographic stereogram. 7. The holographic stereogram according to claim 5, wherein an adhesive layer coated with a coating material is formed on the side opposite to the illumination light incident surface. 8. The image of the holographic material is recorded as interference fringes by irradiating the holographic material with projection light of the image to expose it, and heating the exposed portion enhances the refractive index modulation degree and fixes the recorded image. The holographic stereogram according to claim 5, wherein 9. A hologram for sequentially recording each image based on the image data as a strip-shaped or dot-shaped element hologram by sequentially exposing an image recording layer made of a holographic material based on each image data of a parallax image sequence. A recording step, and a light absorbing layer forming step of forming a light absorbing layer that absorbs the illumination light that has passed through the image recording layer on the side opposite to the surface that becomes the incident surface of the illumination light in the holographic stereogram after fabrication. has the light absorbing layer, after produced holographic stereogram grayed
It is installed on the side of the ram that is opposite to the surface on which the illumination light enters.
After the hologram recording step, the digitized thermosensitive coloring layer is heated.
A method for producing a holographic stereogram, which is characterized in that it is formed by coloring the thermosensitive coloring layer . 10. An image is recorded as interference fringes by irradiating the holographic material with projection light of an image and exposing the image, and heating the exposed portion enhances the refractive index modulation degree and fixes the recorded image. 10. The method for producing a holographic stereogram according to claim 9, wherein the thermosensitive coloring layer is colored at the same time as heating for increasing the refractive index modulation degree and fixing the recorded image by using . 11. An adhesive layer adhering step of adhering an adhesive layer coated with a coating material to a surface opposite to a surface which becomes an incident surface of illumination light in a holographic stereogram after fabrication at least after the hologram recording step. The method for producing a holographic stereogram according to claim 9, further comprising: 12. The light absorbing layer, after the hologram recording step, has a thermosensitive coloring layer formed on the side opposite to the side that becomes the incident surface of the illumination light in the holographic stereogram after fabrication, and then by heating the layer. The method for producing a holographic stereogram according to claim 9, which is formed by coloring the thermosensitive coloring layer. 13. At least after the step of forming the light absorption layer,
10. The adhesive layer attaching step of attaching an adhesive layer coated with a coating material to the surface opposite to the surface that becomes the incident surface of the illumination light in the holographic stereogram after the production. Method of making holographic stereogram. 14. A light absorbing material that absorbs the illumination light that has passed through the image recording layer is provided at least on the side opposite to the surface that becomes the incidence surface of the illumination light in the holographic stereogram after fabrication after the hologram recording step. The method for producing a holographic stereogram according to claim 9, wherein the light absorption layer is formed by bonding the light absorption layer through an adhesive layer. 15. The method for producing a holographic stereogram according to claim 14, further comprising a substrate peeling step of peeling the substrate supporting the image recording layer from the image recording layer after at least the hologram recording step. 16. The adhesive force for adhering the light absorbing material,
15. The method for producing a holographic stereogram according to claim 14, wherein the holographic material is made stronger than the cohesive force of the holographic material itself. 17. The holographic device according to claim 14, wherein the light absorbing material is provided with an adhesive layer coated with a coating material on a surface opposite to a surface facing the image recording layer. How to make a stereogram. 18. A hologram for sequentially recording each image based on the image data as a strip-shaped or dot-shaped element hologram by sequentially exposing an image recording layer made of a holographic material based on each image data of a parallax image sequence. Recording means and light absorbing layer forming means for forming a light absorbing layer for absorbing the illumination light that has passed through the image recording layer on the side opposite to the surface that becomes the incident surface of the illumination light in the holographic stereogram after fabrication. has the door, the light absorbing layer forming means is a heating means, after making holo
In the graphic stereogram
The thermosensitive coloring layer provided on the side opposite to the
A holographic stereogram production device characterized by 19. As the holographic material, an image is recorded as interference fringes by irradiating it with projection light of an image and exposing it, and heating the exposed portion enhances the refractive index modulation degree and fixes the recorded image. The heating means for enhancing the refractive index modulation degree and fixing the recorded image also serves as the heating means for developing the color of the thermosensitive coloring layer.
8. The holographic stereogram producing device according to 8. 20. A pressure-sensitive adhesive layer coated with a coating material on at least a rear side of the hologram recording means, which is opposite to a surface which is an incident surface of illumination light in a manufactured holographic stereogram. The holographic stereogram producing apparatus according to claim 18, further comprising an adhesive layer attaching means. 21. A material for absorbing the illumination light that has passed through the image recording layer is deposited on the surface of the holographic stereogram after fabrication, which surface is opposite to the surface on which the illumination light is incident, by the means for forming the light absorption layer. 19. The holographic stereogram producing apparatus according to claim 18, which is a coating or printing means for performing. 22. To attach a pressure-sensitive adhesive layer coated with a coating material on at least a rear side of the coating or printing means, on a side opposite to a side which is an incident surface of illumination light in a holographic stereogram after fabrication. 22. The holographic stereogram producing apparatus according to claim 21, further comprising: an adhesive layer attaching means. 23. The light absorbing layer forming means comprises a light absorbing material which absorbs the illumination light passing through the image recording layer on the side opposite to the surface on which the illumination light enters in the holographic stereogram after fabrication. 19. The holographic stereogram producing device according to claim 18, which is a laminating means for laminating via an adhesive layer. 24. The holographic stereogram producing apparatus according to claim 23, further comprising a substrate peeling device for peeling a substrate supporting the image recording layer from the image recording layer at least after the hologram recording device. 25. The light absorbing material, wherein an adhesive layer coated with a coating material is provided on the side opposite to the surface facing the image recording layer is used. Holographic stereogram production device.