JP2007286116A - Hologram display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hologram display device for achieving more effective display while reviving characteristics of a hologram reproduction image for a displaying image or a three-dimensional image. <P>SOLUTION: The hologram display device D incorporated in a part of a game machine 100 includes: a reflective volume hologram recording body X arranged to integrate or separate a translucent body 20x to a hologram 10x recording at least two or more kinds of reflective volume holograms with a diffraction wavelength band, by either method of multiple recording or superposition recording; a lighting system L including light sources L1, L2 and L3 generating the substantially same wavelength band as the diffraction wavelength band, by being installed on the reverse observation side of the reflective volume hologram recording body X; and a control unit 30 for flickering to select each light source L1, L2 and L3 for the lighting system L. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hologram display device that uses a hologram as a display method.

2. Description of the Related Art Conventionally, as a display device that is installed in a pachinko machine, a slot machine, a pachislot machine, or the like and presents a video as information to a player, a display device that is accompanied by movement has been appreciated, and a liquid crystal display is generally used.
On the other hand, since it is more effective to display three-dimensional images of characters and the like attached to attract the player's interest, a method of displaying a hologram has recently been proposed (for example, Patent Documents). 1).
In the proposed invention, in the game board of the pachinko machine, in addition to the conventional image, an image corresponding to the winning state of the ball such as a jackpot is simultaneously displayed to increase the amusement effect.
JP 2001-145728 A (Page 2-4, FIG. 2, FIG. 4, FIG. 6)

The above-mentioned liquid crystal display that is frequently used cannot present a stereoscopic image for increasing the amusement effect.
Further, in the hologram display including the method shown in the proposal of the invention, the observer side presents a stereoscopic image using the difference between the positions of the left and right eyes, or after the image viewed from one direction. By moving and looking from different directions, it can seem like there is movement at first glance, but since the observer does not seem to move in a stationary state, it does not attract much interest, and a more effective display method is required. It was done.

  An object of the present invention is to provide a hologram display device that can solve the above-described problems and can realize more effective display while utilizing the characteristics of a hologram reproduction image in a displayed image or a stereoscopic image. .

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to the Example of this invention is attached | subjected and demonstrated, it is not limited to this.
The invention according to claim 1 is a reflective volume hologram recording in which a semi-transparent body (20x) is integrated or spaced apart from a hologram portion (10x) of a reflective volume hologram in which a predetermined object is recorded. An illumination device (L) provided with a light source (L1, L2, L3) installed on the opposite side of the body (X) and the reflective volume hologram recording body (X) and generating the predetermined object on the observation side And a hologram display device including:
According to a second aspect of the present invention, in the hologram display device according to the first aspect, the hologram portion (10x) records at least two kinds of the predetermined objects, and the illumination device (L) A hologram display device comprising light sources (L1, L2, L3) for generating the predetermined objects on the side.
According to a third aspect of the present invention, in the hologram display device according to the second aspect, the at least two or more kinds of predetermined objects are recorded by one of a multiplex recording method and a superposition recording method. It is a hologram display device.
According to a fourth aspect of the present invention, in the hologram display device according to the second or third aspect, the at least two or more types of predetermined objects have different diffraction wavelength bands, and the illumination device (L) includes: A hologram display device comprising a light source (L1, L2, L3) that generates a wavelength band substantially the same as the diffraction wavelength band.
According to a fifth aspect of the present invention, in the hologram display device according to any one of the first to fourth aspects, the transflector (20x) is a transflective layer. It is a display device.
The invention of claim 6 is the hologram display device according to any one of claims 1 to 5, wherein the illumination device (L) drives the light source (L1). A holographic display device characterized by comprising:
The invention of claim 7 is the hologram display device according to any one of claims 1 to 6, wherein the illumination device (L) selectively blinks the light sources (L1, L2, L3). It is a hologram display apparatus characterized by including the control part (30,50,60) to be made.
The invention of claim 8 is the hologram display device according to any one of claims 1 to 7, wherein the illumination device (L) includes a plurality of arranged light sources (L11, L12... Lx). A hologram display device characterized by comprising:
The invention of claim 9 is the hologram display device according to any one of claims 1 to 8, wherein the reflective volume hologram (10x) is a holographic stereogram. It is a hologram display device.

  According to the present invention, the semi-transparent body is disposed in the hologram portion of the reflection type volume hologram so as to be integrated or separated, and the illumination device is disposed on the counter-observation side. A variety of displays can be realized.

  Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is an explanatory view (perspective view) showing an appearance of a game machine 100 using a hologram display device D embodying the present invention and an outline of a configuration inside the hologram display device D.
The hologram display device D is a display device that is incorporated in a part of the game machine 100 installed in a playground or the like and presents information to the player.
The reproduced image I1 is a reproduced image generated by light emission of a light source (for example, a green light emitting laser light source) L1 that emits light in a specific frequency band.
The reproduced image I2 is a reproduced image generated by light emission of a light source (for example, a red light emitting laser light source) L2 that emits light in a specific frequency band.
The reproduced image I3 is a reproduced image generated by light emission of a light source (for example, a blue light emitting laser light source) L3 that emits light in a specific frequency band.

The reflection type volume hologram recording body X includes a hologram portion 10x where a predetermined object is recorded, and a semi-transmission body 20x disposed integrally with or separated from the hologram portion 10x.
In the present embodiment, the hologram portion 10x is recorded with a reflection type volume hologram having at least two types of diffraction wavelength bands by either a multiple recording method or a superposition recording method.
The illuminating device L is installed on the counter-observation side of the reflective volume hologram recording body X, and includes light sources L1, L2, and L3 that generate predetermined objects on the observation side, and selects and blinks the light sources L1, L2, and L3. A control unit 30 is included.
In the present embodiment, the light sources L1, L2, and L3 are light sources that generate substantially the same wavelength band as the diffraction wavelength band of the hologram portion 10x.

The hologram portion 10x includes a hologram photographed with reference light (illumination light) including the same frequency band as the light source L1, a hologram photographed with reference light (illumination light) including the same frequency band as the light source L2, and a light source L3. The information recorded is duplicated by hologram recording with reference light (illumination light) including the same frequency band by either of the multiple recording method or the superposition recording method. A body (semi-transmissive reflective mirror or semi-transmissive reflective layer) 20x is integrated or spaced apart. When the transflector 20x is a transflective mirror, it looks like an ordinary mirror when the light source L is not turned on, and when the light source L is turned on, a reproduced image (stereoscopic image) pops out at that moment. appear.
Reproduced images I1, I2, and I3 are imaged only when the corresponding light sources L1, L2, and L3 emit light, respectively, and many reproducible expressions are possible with the light sources alone or in various combinations of simultaneous emission.

In general, a volume type or a relief type of a hologram that is currently in practical use is used for various purposes.
The volume type reflection type has high diffraction efficiency, high angle selectivity and wavelength selectivity, and can reproduce a bright and clear color image, and is therefore optimal for this type of application. However, since it is necessary to arrange an illumination light source on the observation side of the hologram, the illumination light source is often felt in the way of design.
Therefore, in the hologram display device D of the present embodiment, a reflective volume hologram is adopted, and the semi-transparent material 20x is integrated or separated from the hologram portion 10x, so that the illumination light source is not arranged on the observation side. The configuration was completed.

A reflection type volume hologram that allows transmission observation will be described below.
The reflection type volume hologram imaging method includes a two-beam method and a denniske method, both of which use a volume hologram photosensitive material 10 such as a photopolymer.
FIG. 2 is an explanatory diagram showing the principle of photographing a hologram by the two-beam method.
In the case of the two-beam method, as shown in FIG. 2, the volume hologram photosensitive material 10 is arranged in front of the subject 1a, and the reference light 2a is incident from the front of the volume hologram photosensitive material 10 at a predetermined incident angle. The subject 1a is illuminated with illumination light 3 that can interfere with the light 2a. Scattered light 4 a is generated from the illuminated subject 1 a, and the scattered light 4 a interferes with the reference light 2 a incident from the back of the volume hologram photosensitive material 10 in the volume hologram photosensitive material 10, so that the reflective volume hologram is generated. To be recorded.

  When reproduction reference light including the same wavelength is incident on the reflective volume hologram recorded in FIG. 2 from the same direction as the reference light 2a at the time of recording, diffracted light (not shown) is generated. This diffracted light forms a virtual image of the subject at the position of the subject at the time of recording. Therefore, when observing from the front of the reflection type volume hologram, the virtual image of the subject 1a appears three-dimensionally. When the reproduction illumination light is incident from the direction opposite to the incident direction of the reference light during recording, a real image of the subject is formed at the position of the subject 1a during recording.

FIG. 3 is an explanatory diagram showing the principle of taking a hologram by the Denniske method.
In the case of the Denniske system, as shown in FIG. 3, the volume hologram photosensitive material 10 is disposed in front of the subject 1b, and only the reference light (also serving as illumination light) 2b from the front of the volume hologram photosensitive material 10 at a predetermined incident angle. Is incident. The illumination light 2b passes through the volume hologram photosensitive material 10 and enters the subject 1b arranged behind, and scattered light 4b is generated in the reflection direction from the subject 1b. The scattered light 4b and the illumination light 2b interfere with each other in the volume hologram photosensitive material 10, and the reflection type volume hologram of the subject 1b is recorded.

  When reproduction illumination light including the same wavelength is incident on the reflection type volume hologram recorded in FIG. 3 from the same direction as the reference light 2b at the time of recording, diffracted light (not shown) is generated. The diffracted light forms a virtual image of the subject at the position of the subject 1b at the time of recording. Therefore, when observing from the front of the reflection type volume hologram, the virtual image of the subject 1b appears three-dimensionally. When the reproduction illumination light is incident from the direction opposite to the incident direction of the reference light at the time of recording, a real image of the subject is formed at the position of the subject 1b at the time of recording.

The reconstructed image of the reflective volume hologram photographed in FIG. 2 or 3 cannot be observed from the opposite side of the reconstructed illumination light as it is. Therefore, in order to enable observation from the opposite side, a transflective mirror or a transflective layer (20a in FIG. 4 or 20b in FIG. 6) is disposed integrally with or away from the reflective volume hologram.
FIG. 4 is an explanatory diagram showing the principle of one example of a reflection type volume hologram that allows transmission observation.
FIG. 5 is an explanatory view (sectional view) showing an enlarged part of the path of the light in FIG. 4 in order to explain the relationship between the reproduction illumination light 5 a and the observation light 7.
In the case of FIG. 4 (FIG. 5), the transflective mirror 20a is arranged on the incident side of the reproduction illumination light 5a of the reflective volume hologram 10a so as to be integrated with or separated from the reflective volume hologram 10a. .

  With this configuration, when the reproduction illumination light 5a including the same wavelength as that in the recording is incident from the same direction as or the opposite direction to the incident direction of the illumination light during the recording of the reflective volume hologram 10a, the transflective mirror At 20a, the reproduction illumination light 5a is attenuated by the reflectance and enters the reflective volume hologram 10a, and diffracted light 6a is generated in the opposite direction. A virtual image 11a of the subject is formed at the position of the subject at the time of recording by the diffracted light 6a. The diffracted light 6a is specularly reflected by the transflective mirror 20a, passes through the reflective volume hologram 10a, and is emitted as observation light 7 in the direction opposite to the incident side (transmission side) of the reproduction illumination light 5a. The image seen by the eye E by the observation light 7 is a mirror image 11b in which the virtual image 11a of the subject is reflected on the transflective mirror 20a, and is a mirror image in which left and right are reversed.

FIG. 6 is an explanatory diagram showing the principle that the transmission volume hologram can be transmitted and observed in an example in which the transflective mirror 20b is arranged on the observation side (eye E side) of the reflection volume hologram 10b.
In FIG. 6, a transflective mirror is formed on the observation side (eye E side) of the reflection type volume hologram 10b recorded by the method of the arrangement of FIG. 2 or FIG. 20b is arranged and configured.

  If comprised in this way, if the illumination light 5b which is the illumination light containing the same wavelength as the time of recording from the back of the reflection type volume hologram 10b and permeate | transmits without being diffracted by the reflection type volume hologram 10b will be incident, the illumination light Reference numeral 5b denotes an observation-side transflective mirror 20b, which is attenuated by the transmissivity of the transflective mirror 20b and specularly reflected, enters the reflective volume hologram 10b, and diffracted light 6b is generated in the opposite direction.

  A virtual image 11c of the subject is formed at the position of the subject (not shown) when recorded by the diffracted light 6b. The diffracted light 6b is attenuated by the reflectance of the transflective mirror 20b, passes through the transflective mirror 20b, and is emitted as observation light in a direction opposite to the incident side of the illumination light 5b (transmission side). In this case, the image 11c that can be seen by the eye E is a reproduced image of the reflective volume hologram 10b itself, not a mirror image.

FIG. 7 is an explanatory diagram (plan view) showing a relationship between lighting of the illumination light source and generation of a reproduced image in the display method by the hologram display device of FIG.
FIG. 8 is an explanatory diagram (graph) showing the diffraction efficiency of a hologram with respect to the generated wavelength (nm) of a light source (reproduced light having a specific frequency) used in the hologram display device of FIG.
FIG. 9 is an explanatory diagram showing a display example possible with the hologram display device of FIG.

The reflection type volume hologram 10x used in the hologram display device of FIG. 7 corresponds to the reflection type volume hologram (10a of FIG. 4 or 10b of FIG. 6) shown in FIG. 4 or FIG.
The transflective mirror 20x used in the hologram display device in FIG. 7 corresponds to 20a in FIG. 4 or 20b in FIG.
Therefore, the reflection type volume hologram recording body X composed of the reflection type volume hologram 10x and the transflective mirror 20x can be observed through transmission.
Moreover, the reflection type volume hologram 10x is obtained by recording a reflection type volume hologram having at least two types of diffraction wavelength bands by any one of multiplex recording or superposition recording. In the case of FIG. 1 (FIG. 7), Three types of reflective volume holograms are recorded.

In FIG. 7, since three types of reflection volume holograms are recorded, a light source (for example, a green light emitting laser light source) including the diffraction efficiency G of the specific frequency in FIG. 8 is turned on by the reflection volume hologram 10x. For example, a reproduced image (green three-dimensional image) I1 appears, and an image like i1 in FIG. 9 becomes visible to the observer.
Further, when a light source (a laser light source emitting red light) including a diffraction efficiency R of a specific frequency in FIG. 8 is turned on, a reproduced image (red three-dimensional image) I2 appears, and an image like i2 in FIG. When a light source (blue light emitting laser light source) including a diffraction efficiency B of a specific frequency in FIG. 8 is turned on, a reproduced image (blue stereoscopic image) I3 appears, and an image like i3 in FIG. It becomes visible from the observer.
These reproduced images I1, I2, and I3 are complete stereoscopic images that do not require special glasses or the like. Under the control of the control unit 30 in FIG. It can be controlled to disappear.

As described above, according to the first embodiment, the reflection type volume hologram recording body X in which three types of reflection type volume holograms are recorded with light of different frequency bands, and the light source L1 of the reproduction illumination light corresponding to the frequency band, By providing L2 and L3 and blinking the reproduction illumination light, there is an effect that any reproduction image can be freely displayed according to a preset program at any time.
In addition, the hologram image displayed on the game machine 100 has a reproduction position and a temporal change, and the display content has a movement over time, so that the player's interest can be greatly attracted. .

FIG. 10 is an explanatory view (perspective view) showing an example of a configuration of a hologram display device embodying the present invention and a game machine incorporating the device.
In addition, the part which fulfill | performs the same function as Example 1 mentioned above attaches | subjects the same code | symbol or the code | symbol unified at the end, and abbreviate | omits duplication description and drawing suitably.
In the present embodiment, the hologram portion 10x is obtained by recording at least two or more types of reflective volume holograms having different incident angles of the reference light by either a multiple recording method or a superposition recording method.
The illumination device L includes a light source L1, a light source driving unit 40 that moves the light source L1, and a control unit 50 that controls blinking and movement of the light source L1.

The light source L1 is intended to form a hologram reproduction image by illuminating the hologram portion 10x with illumination light having the same incident angle as the reference light when the hologram is recorded. For example, a transparent glass bulb, a halogen bulb, etc. A white light point source is suitable.
The light source driving unit 40 includes a belt 41, driving force transmitting means 42, a motor 43, and the like.
The light source L1 is attached to the belt 41, and can be freely moved to the left and right by rotating the motor 43 in both forward and reverse directions.

In FIG. 10, a reconstructed image I1 is a reconstructed image generated when reconstructed illumination light (light emission of the light source L1) is applied to the hologram portion 10x at a specific incident angle (for example, 0 °).
The reconstructed image I2 is a reconstructed image generated when reconstructed illumination light (light emission of the light source L1) is applied to the hologram portion 10x at a specific incident angle (for example, + 45 °).
The reconstructed image I3 is a reconstructed image generated when reconstructed illumination light (light emission of the light source L1) is applied to the hologram portion 10x at a specific incident angle (for example, −45 °).
Note that the viewing range of the hologram employed in this example is within a certain range both vertically and horizontally, and varies depending on the position of the hologram, but approximately ± 20 at the center of the hologram with respect to the reproduction illumination light having a specific incident angle. Within the range of °.

If the light source L1 is moved by the light source driving unit 40 and its light emission position is changed, the incident angle of light with respect to the hologram portion 10x can be changed.
When illumination light hits the hologram portion 10x multiplexed and recorded with the reference light having different incident angles from different light emission positions of the light source L1, reproduced images I1, I2, and I3 of the hologram recording corresponding to the respective incident angles are obtained. Imaged.
The reproduced images I1, I2, and I3 are complete stereoscopic images, and all move to the left and right by moving the light source L1.
Therefore, under the control of the control unit 50, by changing the light emission position and the blinking condition of the light source L1, the individual reproduction of the reproduced images I1, I2, and I3 and the movement near the position are selected, and various displays are performed. be able to.

FIG. 11 is an explanatory diagram showing the positional relationship between the position of the light source L1 when the reproduced image appears to move sideways and the position where the reproduced image can be seen.
As shown in FIG. 11, when the position of the light source L1 is moved with the viewpoint fixed, the reproduced image appears to move because the corresponding reproduced image appears at different positions. L-1, L-2, and L-3 are different light emission positions of the light source L1, and I1, I2, and I3 are reproduction images for the light emission positions L-1, L-2, and L-3 of the light source L, respectively. Is the position where appears.

If the light emitting position is different, the incident angle of the light with respect to the hologram portion 10x is different, so that one specified reproduced image of the holograms recorded in a superimposed manner appears, and the appearing position is also different.
For example, if light is emitted at the light emission position L-1, a reproduced image I1 reproduced by hologram recording corresponding to the incident angle to the hologram portion 10x appears, so that an image like i1 in FIG. 9 can be seen from the observer. Become.

Similarly, when light is emitted at the light emission position L-2, a reproduced image I2 appears, and an image like i2 in FIG. 9 becomes visible to the observer. When the light is emitted at the light emission position L-3, a reproduced image I3 appears, and an image like i3 in FIG. 9 becomes visible to the observer.
Moreover, when the light source L1 is moved within the range of the incident angle of ± 20 °, the reproduced image appears to move to the observer at the fixed position in any case.
By controlling with the control part 50, the above-mentioned change of the reproduced image can be freely combined and displayed.

As described above, according to the second embodiment, the light source L1 that is movable on the counter-observation side of the reflective volume hologram recording body X is provided, so that it is displayed to game players and the like due to the change of the light source position. There is an effect that the reproduced image appears to move.
In addition, since three types of holograms are recorded in the reflection type volume hologram recording body X, by changing the incident angle of the reproduction illumination light to the reflection type volume hologram recording body X by changing the light source position greatly. There is an effect that it is possible to switch and display different contents of the screen.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
(1) For example, in the form shown in FIG. 1 (FIG. 7), the example has been described in which the three reproduced images I1, I2, and I3 are displayed side by side by the three light sources L1, L2, and L3. Two reproduced images may be displayed side by side by two light sources. Further, in order to obtain a vertically long display surface, the light source may be arranged vertically and the reproduced images may be displayed side by side.
FIG. 12 is an explanatory diagram showing an example in which reproduced images are displayed vertically in such a hologram display device.
In FIG. 12, i11, i12, and i13 are reconstructed images reproduced by three light sources (not shown) arranged vertically.

(2) The reproduced image is not limited to a three-dimensional object, but may be a fictitious object such as a real person, an animal, or a popular character appearing in manga or animation.
In addition, the reproduced images may be displayed not only at horizontal, vertical, and diagonal positions, but also at the same place or partially overlapping positions. Can do.

(3) The control unit that controls the display of the hologram is only required to include a minimum switching function, and the control program for switching is stored in the control unit or in the game progress program control unit (not shown) of the game machine 100. As long as it is included.

(4) In the light source driving unit 40 shown in FIG. 10, the light source L1 is moved by the belt 41, the driving force transmission means 42, and the motor 43. As shown in FIG. 13, a plurality of point light sources L11, L12 are used. ... Ln ... Lx may be arranged side by side, and the flashing of each point light source may be controlled by the control unit 60. Also with this configuration, it is possible to obtain a result equivalent to that of the embodiment of FIG.

(5) In the embodiment of FIG. 10, a reflective volume hologram recording body X having a plurality of screen areas may be used. For example, two screen areas are provided on the left and right, and the screen is switched by driving the light source L1. In this way, it is possible to display two patterns of “big hit” and “off” and move the light source L1 to select either one.

(6) The reflection type volume hologram may be a holographic stereogram. In the case of a holographic stereogram, a three-dimensional animation can be displayed by changing the position of the light source while fixing the position of the observer, and it is also possible to reproduce an object or a person made of CG. . The holographic stereogram may be taken in two steps or may be taken in one step.

It is explanatory drawing (perspective view) which shows the external appearance of the game machine 100 which uses the hologram display apparatus D which implemented this invention, and the outline of a structure in the hologram display apparatus D. FIG. It is explanatory drawing which shows the imaging principle of the hologram by a two light beam system. It is explanatory drawing which shows the imaging | photography principle of the hologram by a Denishuku system. It is explanatory drawing which shows the principle about one example of the reflection type volume hologram in which transmission observation is possible. FIG. 5 is an explanatory diagram (cross-sectional view) showing an enlarged part of the path of the light in FIG. 4 in order to explain the relationship between the reproduction illumination light 5a and the observation light 7; It is explanatory drawing which shows the principle which can permeate | transmit observation of a reflection type volume hologram. In the display method by the hologram display apparatus of FIG. 1, it is explanatory drawing (plan view) which shows the relationship between lighting of an illumination light source and generation | occurrence | production of a reproduced image. FIG. 2 is an explanatory diagram (graph) showing diffraction efficiency of a hologram with respect to a generated wavelength (nm) of a light source (reproduced light having a specific frequency) used in the hologram display device of FIG. It is explanatory drawing which shows the example of a display which can be performed with the hologram display apparatus of FIG. It is explanatory drawing (perspective view) which shows an example of the structure of the hologram display apparatus which implemented this invention, and a game machine incorporating the same apparatus. It is explanatory drawing which showed the position relationship of the light source L1 in case a reproduction | regeneration image is seen moving horizontally, and the position where a reproduction | regeneration image is visible. It is explanatory drawing which shows an example which displayed the reproduced image vertically. It is explanatory drawing (perspective view) which shows the structural example of the other Example which implemented this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Subject 2a, 2b Reference light 3 Illumination light 4a, 4b Scattered light 5 Reproduction illumination light 6 Diffracted light 7 Observation light 10 Volume hologram photosensitive material 10a, 10b, 10x Hologram part (reflection volume hologram)
11a, 11b, 11c Reconstructed images 20a, 20b, 20x Semi-transmissive body (semi-transmissive reflective mirror, semi-transmissive reflective layer)
DESCRIPTION OF SYMBOLS 30 Control part 40 Light source drive part 50, 60 Control part D Hologram display apparatus E Eye I1, I2, I3 Reproduction image L Illumination device L1, L2, L3 Light source X Reflective volume hologram recording body 100 Game machine

Claims (9)

A reflective volume hologram recording body in which a semi-transmissive body is integrated or spaced apart from a hologram portion of a reflective volume hologram in which a predetermined object is recorded;
An illuminating device provided on a counter-observation side of the reflective volume hologram recording body and provided with a light source for generating the predetermined object on the observation side;
Hologram display device comprising: The hologram display device according to claim 1,
The hologram portion records at least two kinds of the predetermined object,
The illumination device includes a light source for generating the predetermined object on the observation side;
A hologram display device characterized by the above. The hologram display device according to claim 2,
The at least two or more kinds of predetermined objects are recorded by any one of multiple recording or superposition recording;
A hologram display device characterized by the above. In the hologram display device according to claim 2 or 3,
The at least two or more types of predetermined objects have different diffraction wavelength bands,
The illumination device includes a light source that generates a wavelength band substantially the same as the diffraction wavelength band;
A hologram display device characterized by the above. In the hologram display device according to any one of claims 1 to 4,
The transflector is a transflective layer;
A hologram display device characterized by the above. In the hologram display device according to any one of claims 1 to 5,
The illumination device includes a light source driving unit that drives the light source,
A hologram display device characterized by the above. In the hologram display device according to any one of claims 1 to 6,
The illumination device includes a control unit that selectively blinks the light source,
A hologram display device characterized by the above. In the hologram display device according to any one of claims 1 to 7,
The lighting device comprises a plurality of light sources arranged;
A hologram display device characterized by the above. In the hologram display device according to any one of claims 1 to 8,
The reflective volume hologram is a holographic stereogram;
A hologram display device characterized by the above.

Images