JP2008112174A - Hologram image recording medium cartridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent a recording medium for hologram from being exposed to external light. <P>SOLUTION: In a hologram image recording medium cartridge, a film member 78 is provided in a position corresponding to a delivery opening part 48 from which a recording medium 3 for hologram, accommodated inside a light-shielding cartridge casing 45 for shielding external light, is delivered to the outside. The film member 78 closes the delivery opening part 48 when the cartridge is mounted in a non-hologram image recording device, and opens the delivery opening part 48 and is extended and located in an exposing and recording part P1 so as to guide the traveling of the recording medium 3 for hologram delivered from the delivery opening part 48. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hologram image recording medium cartridge that is loaded and used in a hologram image recording apparatus for creating a holographic stereogram capable of three-dimensionally recognizing a real image or a computer-generated image.

  In the holographic stereogram, a large number of images obtained by sequentially imaging a subject from different observation points are used as original images, and these are sequentially exposed and recorded as strip-shaped or dot-shaped element holograms on a single hologram recording medium. Created by. This holographic stereogram identifies a two-dimensional image that is a collection of image information of a part of each element hologram when the user views it from one position with one eye, and horizontally from this position. When viewed at another moved position, a two-dimensional image that is a collection of image information of another part of each element hologram is identified. Therefore, in the holographic stereogram, when the user views this with both eyes, the exposure recording image is recognized as a three-dimensional image due to the parallax between the left and right eyes.

  The above-described holographic stereogram is generally created by the holographic stereogram creation apparatus 100 shown in FIG. The holographic stereogram creating apparatus 100 includes a laser light source 101 that emits laser light L10 having a single wavelength and good coherence, and a half mirror that divides the emitted laser light L10 into object laser light L11 and reference laser light L12. 102, optical components 103 to 107 and an indicator 108 constituting the optical system of the object laser beam L11, optical components 109 to 111 constituting an optical system of the reference laser beam L12, object laser beam L11 and reference laser beam L12. Is configured by an electric stage 113 or the like that holds or drives the hologram recording medium 112 that collects light.

  Specifically, the optical system of the object laser beam L11 includes a total reflection mirror 103 arranged in order from the input side along the optical axis, and a first cylindrical lens that diffuses the object laser beam L11 in a one-dimensional direction. 104, a collimator lens 105 that converts the diffused object laser light L11 into parallel laser light, a projection lens 106, a second cylindrical lens 107 that guides the object laser light L11 to the hologram recording medium 112 of the exposure recording unit P100, and Consists of The display unit 108 is configured by a transmissive liquid crystal panel, and is disposed between the collimator lens 105 and the projection lens 106. The display 108 displays an image based on image data output from an image processing unit (not shown).

  Specifically, the optical system of the reference laser beam L12 includes a cylindrical lens 109 arranged in order from the input side along the optical axis and diffusing the reference laser beam L12 in a one-dimensional direction, and a diffused reference laser. The collimator lens 110 converts the light L12 into parallel laser light, and the total reflection mirror 111 that reflects the reference laser light L12 and guides it to the hologram recording medium 112.

  The hologram recording medium 112 is made of, for example, a photosensitive film, and is held by an electric stage 113 as shown in FIG. 17A. When the electric stage 113 is driven, the arrow shown in FIG. Driven intermittently in the direction b.

  As shown in FIG. 17A, the laser light L10 is emitted from the laser light source 101 and incident on the half mirror 102, and is split into the object laser light L11 and the reference laser light L12 by the half mirror 102.

The object laser light L11 is incident on the display device 108 through the cylindrical lens 104 and the collimator lens 105, and is image-modulated according to the element image displayed when passing through the display device 108. The image-modulated object laser beam L11 is incident on the hologram recording medium 112 located in the exposure recording unit P100 via the projection lens 106 and the cylindrical lens 107. The reference laser beam L12 is incident on the hologram recording medium 112 located in the exposure recording unit P100 via the optical system of the cylindrical lens 109, the collimator lens 110, and the total reflection mirror 111.
Therefore, in the hologram recording medium 112, interference fringes generated by interference between the object laser light L11 and the reference laser light L12, which are image-modulated by the image displayed on the display unit 108, are sequentially formed into strips or dots as element holograms. The exposure is recorded.

  In the holographic stereogram creating apparatus 100, for example, the hologram recording medium 3 shown in FIG. 15 is used. In the hologram recording medium 3, a photopolymer layer 5 made of a photopolymerizable photopolymer is formed on a tape-like film base material 4, and a cover sheet layer 6 is formed on the photopolymer layer 5. This is a so-called film-coated recording medium.

With respect to the hologram recording medium 3, the principle of exposure recording of the element hologram will be described with reference to FIG. In the hologram recording medium 3, as shown in FIG. 16A, the photopolymerizable photopolymer constituting the photopolymer layer 5 is in a state where the monomers M are uniformly dispersed in the matrix polymer in the initial state. is there. The photopolymerization type photopolymer is uniformly dispersed in the matrix polymer at the exposed portion as shown in FIG. 16B by being irradiated with laser light LA having a power of 10 mJ / cm ^{2 to} 400 mJ / cm ² . The monomer M which has been polymerized is polymerized.

As the photopolymerization type photopolymer is polymerized, the concentration of the monomer M due to the movement of the monomer M from the surroundings becomes non-uniform so that the refractive index is modulated between the exposed portion and the unexposed portion. Thereafter, as shown in FIG. 16C, the photopolymerization type photopolymer is irradiated with ultraviolet rays or visible light LB having a power of about 1000 mJ / cm ² to polymerize the monomer M in the matrix polymer. Is completed. In the hologram recording medium 3, since the refractive index of the photopolymerization type photopolymer constituting the photopolymer layer 5 changes according to the incident laser beam LA, the object laser beam L2 and the reference laser beam L3 are used. The interference fringes generated by the interference with the exposure are recorded as changes in the refractive index.

The holographic stereogram creating apparatus 100 uses, as the hologram recording medium 3, a film-coated recording medium in which the photopolymer layer 5 is formed of the above-described photopolymerization type photopolymer. No special development process is required. Therefore, the holographic stereogram creating apparatus 100 can simplify the configuration by eliminating the need for a developing device or the like, and can quickly create a holographic stereogram.
By the way, the hologram recording medium 3 is exposed to external light because the photopolymer layer 5 is composed of the photopolymerizable photopolymer as described above. Therefore, the hologram recording medium 3 has to be loaded into the holographic stereogram creating apparatus 100 under special environmental conditions in which external light is shielded, and its handling is troublesome. Further, the holographic stereogram creating apparatus 100 needs to have a structure in which the loaded hologram recording medium 3 travels to the exposure recording unit P100 in a state where external light is shielded.

  On the other hand, in the holographic stereogram creating apparatus 100 described above, the object laser beam L11 and the reference laser beam L12 are incident on the hologram recording medium 112 positioned in the exposure recording unit P100, and each element hologram is exposed and recorded. If vibration is applied at this time, there is a problem that the created holographic stereogram is affected. That is, in the holographic stereogram creating apparatus 100, even when a minute vibration or the like of the wavelength of the laser beam L10 is applied to the hologram recording medium 112, exposure recording is performed on the hologram recording medium 112. The state of interference fringes becomes unstable and a phenomenon such as a decrease in diffraction efficiency and brightness occurs in a part of the element hologram that is recorded by exposure. Further, the holographic stereogram creating apparatus 100 has a problem that the exposure recording of the element hologram on the hologram recording medium 112 is not performed at all when a larger vibration or the like is applied.

  In the holographic stereogram, when some elemental holograms are exposed and recorded on the hologram recording medium 112 with the diffraction efficiency lowered due to the influence of vibration or the like described above, only the elemental holograms become dark at the time of reproduction. And the uniformity of the image is reduced.

  For this reason, the holographic stereogram creating apparatus 100 generally suppresses vibrations and the like applied from the outside so that the element hologram can be stably exposed and recorded on the hologram recording medium 112. An anti-vibration device is provided for quickly attenuating the generated vibration. The vibration isolator is configured by an air damper, a spring, or the like appropriately disposed between the substrate on which the above-described laser light source 101 and each optical component constituting the optical system are mounted and the apparatus housing.

  In the holographic stereogram creating apparatus 100, it is also important to take measures against vibration of the hologram recording medium 112 generated by the guide means and driving means for holding and driving the hologram recording medium 112. During exposure recording of the element hologram on the hologram recording medium 112 in the exposure recording unit P100, the guide means and the driving means completely fix the hologram recording medium 112 and cause minute vibrations of the wavelength of the laser beam L10. A function to prevent it from being required is required. When the exposure recording of the element hologram on the hologram recording medium 112 is completed, the guide means and the driving means rapidly drive the hologram recording medium 112, and perform this traveling operation when driving and stopping a predetermined amount. It is necessary to provide a function for quickly stopping the vibration associated with.

  However, in the conventional holographic stereogram creating apparatus 100, it takes about 2 seconds for the hologram recording medium 112 driven by the electric stage 113 to attenuate the vibration generated by the driving after the stop. . Therefore, the conventional holographic stereogram creating apparatus 100 requires time until the vibration of the hologram recording medium 112 stops every time an elemental hologram is exposed and recorded using the electric stage 113, and one holographic stereogram is generated. It took a long time to make a gram.

  For this reason, the conventional holographic stereogram creating apparatus 100 is provided with a drive mechanism including a guide unit and a drive unit having a function of suppressing the vibration of the hologram recording medium 112 in place of the electric stage 113 described above. . The holographic stereogram creating apparatus 100, for example, hangs a hologram recording medium 112 between two parallel rollers to which a predetermined tension tension is applied by a torsion coil spring or the like and presses an optical component while pressing an object. The laser beam L11 and the reference laser beam L12 are incident to perform exposure recording of the element hologram.

  According to the holographic stereogram creating apparatus 100, the hologram recording medium 112 that is driven to travel a predetermined amount is stopped by being applied with a tensile tension and suppressed by the optical component, and is generated along with the traveling operation. The time is reduced to ¼ or less before it is required to attenuate the vibration. However, the holographic stereogram creating apparatus 100 has a problem in that the structure of the guide means and the drive means becomes a complicated mechanism.

  Each of the drive mechanisms described above is configured to perform travel braking by elastically contacting an optical component to the hologram recording medium 112 in order to suppress vibration generated in the hologram recording medium 112. Worn or scratched. Therefore, when the holographic stereogram creating apparatus 100 creates a predetermined number of holographic stereograms, maintenance is performed such that the optical component is removed and polished, and then reattached or replaced with a new one. However, the optical component is also a member constituting the exposure recording part P100, and has to be accurately positioned and attached to the holographic stereogram creating apparatus 100, which deteriorates maintainability.

  In the conventional holographic stereogram creation apparatus 100, as another drive mechanism, a torsion coil spring is not used, and driving is performed from a motor that always rotates a slip material reversely to one of parallel rollers. Those configured to generate a predetermined torque by transmitting force are also used. However, in the holographic stereogram creating apparatus 100, since the motor is rotating even during exposure recording, the internal hologram is generated, the element hologram recorded by exposure becomes unstable, and the quality of the created holographic stereogram deteriorates. There was a problem such as.

  The holographic stereogram creating apparatus 100 has a problem that if dust or the like enters inside and adheres to the hologram recording medium 112, the exposure recording characteristics of the element hologram are affected. Therefore, the holographic stereogram creating apparatus 100 includes a cleaning member that cleans the hologram recording medium 112 fed from the supply unit to the exposure recording unit P100. The cleaning member is made of, for example, a non-woven fabric, and wipes and removes dust and the like adhering to the surface of the traveling hologram recording medium 112 by rubbing.

  In the holographic stereogram creating apparatus 100, in order to maintain the cleaning efficiency for the hologram recording medium 112, maintenance is performed in which a cleaning member is replaced while a predetermined number of holographic stereograms are created. When performing this maintenance, the holographic stereogram creating apparatus 100 is naturally opened, so that the hologram recording medium 112 is exposed to external light.

  The holographic stereogram creating apparatus 100 is also provided with a mechanism for supplying an index matching liquid to the hologram recording medium 112 so as to be in close contact with the optical component in a stable state. Since the holographic stereogram creating apparatus 100 consumes the index matching liquid in accordance with the amount of use of the hologram recording medium 112, maintenance for replenishing it is performed. Even when this maintenance is performed, the holographic stereogram creating apparatus 100 is naturally opened, so that the hologram recording medium 112 is exposed to external light.

  Incidentally, the hologram recording medium 112 is generally housed in a light-shielding cartridge housing and provided in the form of a cartridge. When the cartridge is loaded into the holographic stereogram creating apparatus 100, the hologram recording medium 112 is continuously drawn from the feeding opening provided in the light-shielding cartridge housing to the exposure recording unit P100 to expose and record the element hologram. To be done. Once the cartridge opening is opened, the cartridge sensitizes the hologram recording medium 112 with external light entering from the feeding opening. For this reason, the cartridge is prohibited from being taken out from the holographic stereogram creating apparatus 100 even if the hologram recording medium 112 remains.

  An object of the present invention is to provide a hologram image recording medium cartridge that reliably prevents exposure of a hologram recording medium by external light.

  The hologram image recording medium cartridge according to the present invention that achieves the above-described object accommodates a long hologram recording medium, and is subjected to image modulation based on each element image of the parallax image sequence with respect to the drawn out hologram recording medium. The interference fringes generated by the incident object laser light and the reference laser light having coherence to the object laser light are loaded into a hologram image recording apparatus that is sequentially exposed and recorded as element holograms. . The hologram image recording medium cartridge is provided with a film member at a position corresponding to the feeding opening of the light-shielding cartridge housing that blocks external light that feeds the hologram recording medium housed inside from the feeding opening to the outside.

  In the hologram image recording medium cartridge, the film member closes the feeding opening when the non-hologram image recording apparatus is loaded and opens the feeding opening when the hologram image recording apparatus is loaded so as to extend to the exposure recording section. The hologram recording medium fed out from the opening is guided to travel.

  According to the hologram image recording medium cartridge according to the present invention configured as described above, the hologram recording medium housed in the light-shielding cartridge housing by the external light when being carried by being closed by the film member. Is reliably prevented. According to the hologram image recording medium cartridge, when the hologram image recording apparatus is loaded into the hologram image recording apparatus, the hologram recording medium fed out from the feeding opening is prevented from being clogged in the traveling path by the film member, and is transferred to the exposure recording section. The exposure recording is performed with reliable guidance. According to the hologram image recording medium cartridge, the hologram recording medium is guided to the exposure recording unit while being lined by the film member, so that the object laser beam and the reference are made with respect to the hologram image recording medium in a stable state. The laser beam is incident and the element hologram is exposed and recorded with high accuracy.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. The holographic stereogram creation apparatus 10 uses a hologram image recording medium cartridge 44 (hereinafter abbreviated as cartridge 44) containing a hologram recording medium 3 as will be described in detail later. A hologram fed out from the cartridge 44 is used. The object laser beam L2 and the reference laser beam L3 based on a number of strip-shaped element holograms are incident on the recording medium 3 for exposure in the exposure recording unit P1, and the object laser beam L2 and the reference laser beam L3 This is a device for producing a holographic stereogram by exposing and recording the interference fringes as they are. The hologram recording medium 3 is fed out from the cartridge 44 and is intermittently driven by a recording medium feeding mechanism 34 described later. Since the hologram recording medium 3 is equivalent to that described with reference to FIG. 16, detailed description thereof will be omitted by attaching the same reference numerals.

  As shown in FIG. 1, the holographic stereogram creation apparatus 10 includes an image data processing unit 11 that processes image data to be exposed and recorded, and a control unit 12 that includes a control computer 13 that controls the entire apparatus. And a holographic stereogram creating unit 14 having an optical system 15 for creating a holographic stereogram.

  The image data processing unit 11 includes an image processing computer 16 and a storage device 17, and includes a lot of captured image data including parallax information supplied from the parallax image sequence imaging device 1 including a multi-lens camera, a mobile camera, and the like. A parallax image data sequence D3 is created based on element hologram image data such as D1 and a large number of computer image data D2 including parallax information created by the computer 2 for generating image data.

  The captured image data D1 is image data for a plurality of images obtained by, for example, simultaneous shooting with a multi-lens camera or continuous shooting with a mobile camera, and includes parallax information. The computer image data D2 includes a plurality of pieces of image data including parallax information created by a CAD device (Computer Aided Design) or a CG device (Computer Graphics), for example.

  The image data processing unit 11 performs predetermined image processing for holographic stereogram on the parallax image data sequence D3 by the image processing computer 16 to generate hologram image data D4. The hologram image data D4 is temporarily stored in a storage device 17 such as a computer memory or a hard disk device. As will be described later, the image data processing unit 11 performs element hologram image data D5 for each image from the hologram image data D4 stored in the storage device 17 when exposing and recording the element hologram image on the hologram recording medium 3. The element hologram image data D <b> 5 is read in order and sent to the control computer 13 of the control unit 12.

  The control computer 13 drives the holographic stereogram creation unit 14 to set an element display image based on the element hologram image data D5 supplied from the image data processing unit 11 in a part of the holographic stereogram creation unit 14. The hologram recording medium 3 thus formed is sequentially exposed and recorded as strip-shaped element holograms. The control computer 13 controls the operation of each mechanism of the holographic stereogram creation unit 14 as will be described later.

  The holographic stereogram creating unit 14 is configured such that each member constituting the optical system 15 is disposed and supported on a support substrate 18, and the support substrate 18 is supported on the apparatus housing 20 via a damper 19. As shown in FIGS. 1 and 2, the optical system 15 includes an incident laser optical system 15A, an object laser optical system 15B, and a reference laser optical system 15C. The object laser optical system 15B and the reference laser optical system 15C are respectively optical paths to the exposure recording part P1 for the object laser light L2 and the reference laser light L3 in order to enhance the coherence between the object laser light L2 and the reference laser light L3. It is comprised so that length may become substantially the same. The holographic stereogram creating apparatus 10 uses the hologram recording medium 3 that is a photosensitive material, and thus has a structure in which the apparatus housing 20 retains at least the light shielding property of the optical system 15.

  The incident laser optical system 15A includes a laser light source 21 that emits a laser beam L1, a shutter mechanism 22 that allows the laser beam L1 to enter or shut off the laser beam L1, a laser beam L1 that is an object laser beam L2, and a reference laser beam L3. The half mirror 23 is divided into two. The laser light source 21 is configured by a laser device such as a semiconductor-excited YAG laser device, an air-cooled argon ion laser device, or an air-cooled krypton laser device that emits laser light L1 having a single wavelength and good coherence.

  The shutter mechanism 22 is opened / closed by a control output S1 output from the control computer 13 corresponding to the output timing of the element hologram image data D5, and the laser beam L1 is positioned on the exposure recording unit P1 via the optical system at the subsequent stage. Is incident on the hologram recording medium 3, or the laser beam L 1 is blocked from entering the hologram recording medium 3. The half mirror 23 divides the incident laser beam L1 into a transmitted laser beam and a reflected laser beam. As the laser beam L1, the transmitted laser beam is used as the above-described object laser beam L2, while the reflected laser beam is used as the reference laser beam L3. The object laser light L2 and the reference laser light L3 are incident on the object laser optical system 15B or the reference laser optical system 15C provided in the subsequent stage, respectively.

  Although not shown, the incident laser optical system 15A is provided with a total reflection mirror or the like for the purpose of appropriately changing the traveling direction of the laser light L1 and making the object laser light L2 and the reference laser light L3 have the same optical path length. May be. The shutter mechanism 22 may be configured to mechanically drive a shutter piece, for example, or may be configured with an electronic shutter using an acousto-optic modulation (AOM), In short, any openable / closable beam that can shield and transmit the laser beam L1 may be used.

  Specifically, the object laser optical system 15B includes a total reflection mirror 24, a first cylindrical lens 25, a collimator lens 26, a projection lens 27, and a projection lens arranged in order from the input side along the optical axis. An optical component such as the second cylindrical lens 28 is used. The first cylindrical lens 25 is a combination of a convex lens and a pinhole, and the display surface of a transmissive liquid crystal display 29, which will be described later, transmits the object laser light L2 that is transmitted through the half mirror 23 and reflected by the total reflection mirror 24. It diffuses in a one-dimensional direction corresponding to the width.

  The collimator lens 26 converts the object laser light L 2 diffused by the first cylindrical lens 25 into parallel laser light and guides it to the transmissive liquid crystal display 29. The projection lens 27 projects the object laser light L2 onto the second cylindrical lens 28. The second cylindrical lens 28 has an effect of condensing the object laser light L2 converted into parallel laser light in the lateral direction in the exposure recording unit P1.

  In the object laser optical system 15B, a transmissive liquid crystal display 29 is disposed between the collimator lens 26 and the projection lens 27. Element hologram images are sequentially displayed on the transmissive liquid crystal display 29 based on the element hologram image data D5 output from the control computer 13. The control computer 13 sends the drive output S2 to the recording medium feed mechanism 34 of the hologram recording medium 3 described later in response to the output timing of the element hologram image data D5, and controls its operation. The feeding operation of the hologram recording medium 3 is controlled.

  In the object laser optical system 15B configured as described above, the object laser light L2 in the state of a point light source that is divided and incident from the incident laser optical system 15A is diffused by the first cylindrical lens 25 and is collimated. By entering the lens 26, the laser beam is converted into parallel laser light. In the object laser optical system 15B, the object laser light L2 incident on the transmissive liquid crystal display 29 via the collimator lens 26 is image-modulated according to the element hologram image displayed on the transmissive liquid crystal display 29. In addition, the light is incident on the second cylindrical lens 28 via the projection lens 27. The object laser optical system 15B causes the image-modulated object laser light L2 to be incident on the hologram recording medium 3 of the exposure recording unit P1 while the shutter mechanism 22 is opened, and corresponds to the element hologram image. Record exposure.

  Specifically, the reference laser optical system 15 </ b> C includes a cylindrical lens 30, a collimator lens 31, and a total reflection mirror 32 arranged in order from the input side along the optical axis. Similarly to the first cylindrical lens 25 of the object laser optical system 15B described above, the cylindrical lens 30 is a combination of a convex lens and a pinhole, and the reference laser beam L3 reflected and divided by the half mirror 23 has a predetermined width, That is, the light is diffused in a one-dimensional direction corresponding to the display surface width of the transmissive liquid crystal display 29. The collimator lens 31 converts the reference laser light L3 diffused by the cylindrical lens 30 into parallel laser light. The total reflection mirror 32 reflects the reference laser beam L3, guides it to the rear of the hologram recording medium 3 of the exposure recording unit P1, and makes it incident.

  Although the shutter mechanism 22 is provided in the incident laser optical system 15A as described above, the shutter mechanism 22 is not limited to such a configuration. For example, the shutter mechanism 22 is positioned before and after the hologram recording medium 3 of the exposure recording unit P1, respectively. You may arrange | position to the laser optical system 15B and the reference laser optical system 15C. The shutter mechanism 22 is configured to perform control such that the object laser beam L2 and the reference laser beam L3 incident on the hologram recording medium 3 are incident or blocked in synchronization immediately before entering the hologram recording medium 3. It may be.

The optical system 15 configured as described above is configured so that the optical path lengths of the laser optical systems 15B and 15C of the object laser beam L2 and the reference laser beam L3 divided by the half mirror 23 are substantially the same as described above. Has been. Accordingly, the optical system 15 creates a holographic stereogram in which the coherence between the object laser beam L2 and the reference laser beam L3 is improved and a clearer reproduced image is obtained.
The optical system 15 is provided with an interference fringe detection unit 33 that stops exposure recording of the hologram recording medium 3 when there is a possibility that a good holographic stereogram may not be created due to vibration or the like. The interference fringe detection unit 33 detects the state of the interference fringes formed by the object laser light L2 and the reference laser light L3 incident on the hologram recording medium 3 through the above-described optical systems. The interference fringe detection unit 33 is configured by, for example, a CCD camera (Charge Coupled Device camera), and detects the fluctuation state of the interference fringes formed in the detection region different from the exposure formation region of the holographic stereogram of the hologram recording medium 3. Then, detection is performed with the wavelength order of the laser light L1 emitted from the laser light source 21.

  The interference fringe detection unit 33 sends a detection output to the control computer 13 when detecting the appearance of an interference fringe in a fluctuation state greater than or equal to a predetermined value in the detection region. The control computer 13 puts the shutter mechanism 22 into an inoperative state based on this detection output. Therefore, the creation of the holographic stereogram is stopped by blocking the incidence of the object laser beam L2 and the reference laser beam L3 on the hologram recording medium 3. Further, the interference fringe detection unit 33 stops sending the detection output to the control computer 13 when the interference fringes formed in the detection region are in a fluctuation state within a predetermined value. Thus, the control computer 13 sets the shutter mechanism 22 in an operating state so that the object laser beam L2 and the reference laser beam L3 are incident on the hologram recording medium 3 so as to create a holographic stereogram. .

  As described above, the holographic stereogram creating apparatus 10 includes the interference fringe detection unit 33, so that the holographic stereogram 3 is placed on the hologram recording medium 3 in a state where the interference fringes due to the object laser light L2 and the reference laser light L3 are stable. It allows the gram to be recorded by exposure, creating a bright holographic stereogram with high diffraction efficiency. In addition, the holographic stereogram creating apparatus 10 includes the interference fringe detection unit 33, so that the installation location is not limited and the usability is improved.

  The interference fringe detection unit 33 described above is arranged in the vicinity of the hologram recording medium 3 and configured to detect a part of the interference fringes formed in the detection region. However, the configuration is limited to this configuration. It is not something. The interference fringe detector 33 detects the interference fringes by, for example, using a mirror or the like to guide part of the object laser light L2 and the reference laser light L3 to different positions to form the interference fringes. It may be configured. Further, the interference fringe detection unit 33 may be configured to form an interference fringe by the detection laser light divided into the object laser light L2 and the reference laser light L3 using a half mirror or the like and detect the interference fringe. Good. Further, the interference fringe detection unit 33 may be configured to directly extract a part of the laser light L1 emitted from the laser light source 21 to form an interference fringe for vibration detection and detect the interference fringe. Further, as the interference fringe detection unit 33, an optical system for vibration detection different from the optical system 15 may be provided, and the interference fringes by this optical system may be detected to detect vibration.

As described above, the holographic stereogram creation device 10 will be described in detail later, but the hologram recording medium 3 fed out from the cartridge 44 is moved by one element hologram in the direction of the arrow a in FIG. A recording medium feeding mechanism 34 for intermittent feeding is provided. The recording medium feeding mechanism 34 intermittently travels and drives the hologram recording medium 3 fed out from the cartridge 44 based on the drive output S2 sent from the control computer 13. Further, in the holographic stereogram creating apparatus 10, the above-described shutter mechanism 22 is operated based on the control output S1 sent from the control computer 13 in conjunction with the operation of the recording medium feeding mechanism 34, and the laser light L1. Free the light path.
As shown in FIG. 1, the holographic stereogram creating apparatus 10 mounts the constituent members and parts of the optical system 15 described above on a support substrate (optical surface plate) 18 formed of an aluminum plate, an aluminum alloy plate, or the like. Configured. Since the holographic stereogram creating apparatus 10 is not incident on the hologram recording medium 3 in a stable state when the vibration or the like is applied from the outside as described above, the object laser light L2 and the reference laser light L3 are not incident on the hologram recording medium 3. There arises a situation in which interference fringes in a good state are not exposed and recorded on the hologram recording medium 3. For this reason, the holographic stereogram creating apparatus 10 supports the support substrate 18 with a plurality of dampers 19 in order to suppress the influence of such vibrations on the optical system 15 and the like.

  Although details are omitted, each damper 19 is configured by an elastic member such as an air spring, rubber, coil spring, or the like. One end portion is coupled to and holds the support substrate 18, and the other end portion is a device. The housing 20 is fixed to the upper part of the base member 20A. These dampers 19 act to suppress vibrations or the like applied to the optical system 15 from the outside to a wavelength of the laser beam L1 (about 1 μm) or less, more preferably to 1/5 or less. Therefore, the holographic stereogram creation apparatus 10 maintains the optical system 15 in a stable state even when vibrations are applied from the outside, so that the object laser light L2 and the reference laser light L3 are fluctuated. So that it is incident on the hologram recording medium 3 in a stable state. Thus, the holographic stereogram creation apparatus 10 has excellent diffraction efficiency and enables creation of a bright holographic stereogram.

  The holographic stereogram creation device 10 causes the hologram recording medium 3 fed out from the cartridge 44 by a recording medium feeding mechanism 34 described later to travel along the recording medium traveling system. The hologram recording medium 3 is wound around a winding core 46 that is rotatably provided inside a cartridge 44 described later, and is fed out from the first feeding opening 48 and travels in the recording medium running system by the recording medium feeding mechanism 34. Driven. The holographic stereogram creating apparatus 10 does not cause minute vibrations of the wavelength of the laser beam L1 on the hologram recording medium 3 during exposure recording of the element hologram on the hologram recording medium 3 as described above. Thus, the structure is held in a stable state.

  As shown in FIG. 3, the recording medium traveling system is configured to have a substantially S-shape by a recording medium feeding mechanism 34, a heat roller 35, a pair of discharge rollers 36a and 36b, a cutter 37, and the like. In the recording medium traveling system, an ultraviolet lamp 38 is disposed between the recording medium feeding mechanism 34 and the heat roller 35.

  As shown in FIGS. 3 and 5, the recording medium feeding mechanism 34 is assembled to a pair of opposed frames 39a and 39b, and a driving roller 40 for driving the hologram recording medium 3 fed out from the cartridge 44 and the drive roller 40. A pinch roller 41 that rotates following the drive roller 40, a stepping motor 42, and the like are included.

  The drive roller 40 is mounted in a fixed manner in the rotational direction on a drive shaft 43 that is rotatably supported by the frames 39a and 39b. As shown in FIG. 5, one end of the drive shaft 43 protrudes from one frame 39a and is intermittently driven to rotate by a stepping motor 42 constituting a drive source. The drive roller 40 sandwiches the hologram recording medium 3 with a pinch roller 41 on the outer periphery thereof, and drives the hologram recording medium 3 to run intermittently.

  As shown in FIG. 3, the heat roller 35 is disposed at a position slightly displaced on the incident side of the reference laser beam L <b> 3 with respect to the drive roller 40. The heat roller 35 travels by multiplying the outer periphery of the hologram recording medium 3 with a winding angle of about a half circumference. Further, although not shown, the heat roller 35 is provided with a heater inside, and is maintained at a temperature of about 120 ° C. to heat the hologram recording medium 3 so that the refractive index of the photopolymer layer 5 is increased. Increase the modulation depth.

  The discharge rollers 36a and 36b are intermittently driven in synchronization with the drive roller 40 by a stepping motor (not shown) driven by a drive output S2 sent from the control computer 13 of the control unit 12. The discharge rollers 36a and 36b intermittently send out the hologram recording medium 3 corresponding to one element hologram every time exposure recording for one element image is completed. Therefore, the hologram recording medium 3 travels in close contact with the outer peripheral portion of the heat roller 35 without being bent in the exposure recording portion P1 by the discharge rollers 36a and 36b and the recording medium feeding mechanism 34 described above.

  The cutter 37 is driven by a drive mechanism (not shown) driven by a drive output S2 sent from the control computer 12, and the traveling hologram recording medium 3 has a certain length, that is, the parallax image sequence is transferred to the hologram recording medium 3. All the holographic stereograms based on the respective image data are exposed and recorded, and the exposed and recorded portions are cut out in a state where they are discharged to the outside. Therefore, the holographic stereogram creation apparatus 10 discharges the area where the hologram image is exposed and recorded on the hologram recording medium 3 to the outside as one holographic stereogram.

As described above, the ultraviolet lamp 38 is disposed along the recording medium traveling system between the driving roller 40 and the heat roller 35. The ultraviolet lamp 38 irradiates the hologram recording medium 3 on which a holographic stereogram due to interference fringes between the object laser beam L2 and the reference laser beam L3 is exposed and recorded, with ultraviolet rays LB having a power of about 1000 mJ / cm ^2. This completes the polymerization of monomer M in the matrix polymer.

  In the holographic stereogram creating apparatus 10 configured as described above, a drive output S2 corresponding to a one-element hologram is sent from the control computer 13 of the control unit 12 every time exposure recording for one element image is completed. As a result, the stepping motor 42 is driven, and the drive roller 40 is rotated by a predetermined angle. In the holographic stereogram creating apparatus 10, the hologram recording medium 3 is driven to travel in an amount corresponding to the one-element hologram, and the unexposed portion is made to correspond to the exposure recording portion P1.

  In this state, the holographic stereogram creating apparatus 10 exposes the object laser light L2 and the reference laser light L3, which are image-modulated from the front and back surfaces of the hologram recording medium 3 by opening the shutter mechanism 22. The light is incident on the hologram recording medium 3 of P1, and exposure fringes corresponding to the element hologram image are recorded. The holographic stereogram creation apparatus 10 sends a drive output S2 from the control computer 13 of the control unit 12 to the recording medium feed mechanism 34 when the exposure recording of the one-element image is completed, thereby driving the hologram recording medium 3 to travel. . The holographic stereogram creating apparatus 10 creates a holographic stereogram by sequentially performing this operation.

  As shown in FIG. 4, the cartridge 44 is supported in a light-shielding cartridge housing 45 that keeps the entirety in a light-shielding state, and is rotatably supported inside the light-shielding cartridge housing 45, and the hologram recording medium 3 on the outer peripheral portion. And a pair of cleaning felt members 47a and 47b for performing a cleaning process on the hologram recording medium 3. Further, the cartridge 44 is provided with a first feeding opening 48 for feeding the hologram recording medium 3 to the exposure recording portion P1.

  In addition, the cartridge 44 includes an exposure recording unit structure 49 that includes the plurality of optical components and the like disposed outside the light-shielding cartridge housing 45 and corresponding to the first feeding opening 48, and constitutes the exposure recording unit P1. Is attached. The hologram recording medium 3 is fed from the first feeding opening 48 to the exposure recording unit structure 49, passes through the exposure recording unit structure 49, and then passes from the second feeding opening 50 to the recording medium feeding mechanism 34 described above. It is paid out.

  The winding core 46 is integrated with a support shaft 51 that is rotatably supported inside the light shielding cartridge housing 45, and a long hologram recording medium 3 is wound around the outer periphery thereof. It plays the role of sequentially feeding out the hologram recording medium 3. As shown in FIG. 5, the support shaft 51 is provided with a brake mechanism 53, which will be described in detail later, at one end protruding from a partition plate 52 installed inside the light shielding cartridge housing 45.

  The cleaning felt members 47 a and 47 b are provided in the vicinity of the first feeding opening 48 inside the light shielding cartridge housing 45. The cleaning felt members 47a and 47b sandwich the hologram recording medium 3 across the entire width direction, and wipe away dust and the like attached to the surface of the hologram recording medium 3 fed out from the light shielding cartridge housing 45. , Has a role of shielding light from the first feeding opening 48. The fed hologram recording medium 3 passes through the first feeding opening 48 and is then sent to the exposure recording unit structure 49 attached to the light shielding cartridge housing 45.

  As shown in FIG. 4, the exposure recording unit structure 49 includes an object laser light incident unit structure 54 and a reference laser light incident unit structure 55, and the incident laser beam L2 and the reference laser beam L3 are incident on the hologram recording medium 3. Part. The exposure recording unit structure 49 is positioned and attached to the light-shielding cartridge housing 45 and holds the entire area in the width direction of the hologram recording medium 3 in the width area of each element hologram to be exposed and recorded.

  The object laser light incident part structure 54 includes a louver film 56, a one-dimensional diffusion plate 57, a transparent substrate 58, a leaf spring 59, and a spacer 60, and constitutes an incident part on the object laser light L2 side.

  The louver film 56 is made of an optical component having a fine bowl-shaped grating, and one surface is in contact with one surface of the hologram recording medium 3. The louver film 56 exposes and records illegal interference fringes when the reference laser beam L3 transmitted through the hologram recording medium 3 is reflected by the one-dimensional diffusion plate 57 and is incident on the hologram recording medium 3 again. It has the effect of preventing.

  The one-dimensional diffusing plate 57 is an optical component that diffuses the incident object laser light L2 in the longitudinal direction in FIG. 4, that is, the major axis direction of each element hologram that is exposed and recorded on the hologram recording medium 3, and one surface thereof. Are bonded together and joined to the other surface of the louver film 56. The one-dimensional diffusion plate 57 acts to give a vertical viewing angle to the created holographic stereogram.

  The transparent substrate 58 is a rigid body made of a transparent material such as glass or transparent plastic having an appropriate thickness, and a one-dimensional diffusion plate 57 is joined and integrated on one surface thereof. A louver film 56 is bonded. The object laser beam L2 is incident on the transparent substrate 58 from the other surface.

  On the other hand, the reference laser light incident part structure 55 includes a light guide block member 61 and a light shielding substrate 62 that blocks light other than the reference laser light L3, and constitutes an incident part on the reference laser light L3 side.

  Like the transparent substrate 58, the light guide block member 61 is a rigid member formed of glass or transparent plastic having an appropriate thickness, and the reference laser beam L3 is incident from one surface thereof. The light guide block member 61 is positioned so that the other surface is held in a state of being in smooth contact with the hologram recording medium 3. Therefore, as shown in FIG. 4, the light guide block member 61 is arranged on the side on which the hologram recording medium 3 is supplied so as to smoothly come into contact with the hologram recording medium 3 on the surface in contact with the hologram recording medium 3. The two feeding opening portions 50 are formed so as to have arcuate surfaces like 61a and 61b, respectively.

  The cartridge 44 is provided with a leaf spring 59 that biases the transparent substrate 58 toward the reference laser light incident portion structure 55 with respect to the object laser light incident portion structure 54. In a state where the cartridge 44 is not loaded in the holographic stereogram creating apparatus 10, the object laser light incident part structure 54 is in a state where the hologram recording medium 3 is slightly exposed to the outside from the second feeding opening 50. And the reference laser beam incident part structure 55. That is, the cartridge 44 is configured so that the hologram recording medium 3 is positioned at a position corresponding to the exposure recording section structure 49 by the elastic force of the leaf spring 59, more specifically at a position corresponding to the exposure recording section P1. 54 and the reference laser beam incident part structure 55 are held in pressure contact with each other. Therefore, the cartridge 44 is fixed so that the hologram recording medium 3 kept in a light-shielded state inside the light-shielding cartridge housing 45 is not drawn out by an external impact or the like, thereby preventing the photosensitive member from being exposed.

  On the other hand, when the cartridge 44 is loaded in the holographic stereogram creating apparatus 10, the action of the leaf spring 59 pressing the hologram recording medium 3 is released by a cam mechanism (not shown) provided on the apparatus side. Moved. As a result, the cartridge 44 can be released from the fixed state of the hologram recording medium 3 and fed out from the second feeding opening 50 to the recording medium feeding mechanism 34. The leaf spring 59 does not completely lose the pressing force against the hologram recording medium 3, and is slightly sandwiched between the object laser light incident part structure 54 and the reference laser light incident part structure 55 with respect to the hologram recording medium 3. It is held in a pressure-contacted state to the extent that it gives a load. The leaf spring 59 presses the spacer 60 provided on the object laser light incident part structure 54 side. Since the reference laser beam incident part structure 55 is positioned and fixed to the light-shielding cartridge housing 45, it does not move even when the spacer 60 is pressed by the leaf spring 59.

  Therefore, the cartridge 44 guides one side of the traveling path of the hologram recording medium 3 configured between the object laser light incident part structure 54 and the reference laser light incident part structure 55. The predetermined distance is maintained such that the surface of the block member 61 smoothly contacts. Therefore, the cartridge 44 is configured such that a weak braking force is applied to the hologram recording medium 3 fed out from the light shielding cartridge housing 45. The hologram recording medium 3 is fed out of the cartridge 44 while maintaining a balance between the traveling driving force and the braking force and smoothly contacting one surface of the hologram recording medium 3 with the light guide block member 53. The hologram recording medium 3 is held by the drive roller 40 and the pinch roller 41 of the recording medium feeding mechanism 34 described above, so that the surface of the hologram recording medium 3 is exposed to object laser optics in the exposure recording unit P1 formed by the exposure recording unit structure 49. The vehicle travels in a state perpendicular to the optical axes of the system 15B and the reference laser optical system 15C. The leaf spring 59 is not limited to a leaf spring, and may be an elastic means that urges the object laser light incident portion structure 54 toward the reference laser light incident portion structure 55, and may be a coil spring, for example.

  As shown in FIG. 5, the brake mechanism 53 includes a tension adjustment plate 63, a compression coil spring 64, and a slip material 65 that are attached to the support shaft 51 of the winding core 46 in this order from the outside. The tension adjustment plate 63 is fixed to the support shaft 51. The slip material 65 is pressed against the partition plate 52 by the elastic force of the compression coil spring 64 mounted in a compressed state with the tension adjusting plate 63. The brake mechanism 53 adjusts the elastic force of the compression coil spring 64 by adjusting the fixing position of the tension adjusting plate 63 with respect to the support shaft 51.

  By configuring the brake mechanism 53 as described above, the elastic force of the compression coil spring 64 that presses the slip material 65 against the partition plate 52 becomes a load of the rotation operation of the support shaft 51. The brake mechanism 53 applies a braking force to the hologram recording medium 3 when the driving roller 40 is rotationally driven by the stepping motor 42 and the hologram recording medium 3 travels intermittently as will be described later. . Of course, in the brake mechanism 53, the elastic force of the compression coil spring 64 is set to be smaller than the rotational driving force of the stepping motor 42, and does not hinder the driving of the hologram recording medium 3.

  As described above, the brake mechanism 53 applies a traveling load to the hologram recording medium 3 to suppress the occurrence of vibrations other than when the hologram recording medium 3 is driven in the exposure recording unit P1. In addition, the brake mechanism 53, in combination with the configuration of the S-shaped recording medium traveling system, prevents unnecessary operations such as overrun after the hologram recording medium 3 is driven to travel. At the same time, the vibration of the hologram recording medium 3 generated in accordance with the traveling operation is quickly stopped.

  Here, the winding core 46 provided with the brake mechanism 53 is a rigid body formed of a rigid body and winds the hologram recording medium 3 without looseness. That is, the hologram recording medium 3 is applied with a tensile tension due to the structure of the recording medium traveling system and the action of the brake mechanism 53. Depending on the strength of the tensile tension, one end of the hologram recording medium 3 is provided. Is wound with an adhesive strength and a winding force equal to or greater than a predetermined value.

  One end of the hologram recording medium 3 is bonded to the core 46 with a bonding strength of 1 N or more per 10 mm in the width direction, and is wound with a winding force of 1 N / cm or more.

  Specifically, the hologram recording medium 3 has a tensile tension of 200 gf (about 1.96 N) per 10 mm in the width direction, and therefore has an adhesive strength of 400 gf per 10 mm in the width direction at the bonding portion with the core 46. At about 3.92 N) or more, the wire is wound around the core 46 with a winding force of 300 gf / cm (about 2.94 N / cm) or more. The hologram recording medium 3 is maintained in a state in which minute vibrations generated during driving are suppressed.

  Further, as shown in FIGS. 6 and 7, the cartridge 44 is provided with a pair of clamping rollers 66a and 66b in the first feeding opening portion 48, and one or both of the support shafts 67a and 67b as described above. A brake mechanism 50 may be provided.

  The brake mechanism 50 has been described with the simple compression coil spring 64 and the slip material 65, but can be applied as long as a static brake mechanism such as rubber can be obtained.

  Further, as shown in FIG. 8 for the brake mechanism, the cartridge 44 is provided with another cleaning felt by elastic means such as a leaf spring 68 with respect to the cleaning felt member 47a fixed at the first feeding opening 48. The hologram recording medium 3 may be sandwiched by biasing the member 47b. With such a configuration, the cartridge 44 not only has the pair of cleaning felt members 47a and 47b act to clean and shield the hologram recording medium 3, but also at the time of transport and exposure recording in place of the brake mechanism 53 described above. Sometimes, it acts as a brake means for holding the hologram recording medium 3. In this case, the cartridge 44 does not need to apply the above-described restriction to the winding core 46, but the force for sandwiching the hologram recording medium 3 by the pair of cleaning felt members 47a and 47b so as to obtain an appropriate tension tension. Configured to adjust.

  The holographic stereogram creating apparatus 10 drives the hologram recording medium 3 to run by intermittently rotating the stepping motor 42 at a constant speed, and after the stop, waits for the vibration to attenuate and records exposure. However, the present invention is not limited to such a configuration. For example, as shown in FIG. 14, the holographic stereogram creation apparatus 10 may be configured to drive the hologram recording medium 3 while gradually accelerating it at the beginning of driving and to stop it while gradually decelerating. . The holographic stereogram creating apparatus 10 completely suppresses overrun of the hologram recording medium 3 by using this configuration and the brake means including the brake mechanism 53 and the cleaning felt members 47a and 47b. The vibration of the entire recording medium traveling system is surely suppressed. Therefore, the holographic stereogram creating apparatus 10 shortens the waiting time for vibration attenuation before exposure recording, and efficiently creates a holographic stereogram.

  In the holographic stereogram creating apparatus 10, it is desirable to make the time from driving to exposure recording as constant as possible. However, the hologram recording medium 3 is affected by the expansion of itself over time, the sliding of each roller and drive transmission system, the play, or the change in characteristics such as the backlash of each member of the recording medium feeding mechanism 34. The predetermined tensile tension may be lowered. Therefore, the holographic stereogram creation apparatus 10 intermittently feeds the hologram recording medium 3 by a predetermined amount before exposure recording, waits for a predetermined time to wait for vibration attenuation, and records exposure.

  As described above, the cartridge 44 accommodates the hologram recording medium 3 while keeping the light shielding state therein. Further, since the cartridge 44 reliably suppresses the generation of minute vibrations applied during exposure recording and stops the traveled hologram recording medium 3 in a stable state, stable interference fringes are generated for the hologram. Exposure recording is performed on the recording medium 3. Furthermore, since the cartridge 44 is unitized with the exposure recording unit structure 49, the brake mechanism 53, and the like that perform these functions, the maintainability of the holographic stereogram creating apparatus 10 can be improved.

  In the holographic stereogram creating apparatus 10, it is important that the components attached to the cartridge 44 such as the exposure recording unit structure 49 and the cartridge 44 maintain the same positional relationship again. Accordingly, these parts and the cartridge 44 are provided with positioning means such as pins and recesses so that they can be easily attached and detached.

  A hologram image recording medium cartridge 69 (hereinafter abbreviated as cartridge 69) shown in FIGS. 9 and 10 as the second embodiment is configured such that an index matching liquid is used in the exposure recording unit P1. And Since the other structure of the cartridge 69 is the same as that of the cartridge 44 described above, the description of the same part is omitted by giving the same reference numeral.

  The exposure recording unit structure 70 includes an object laser beam incident unit structure 54 and a reference laser beam incident unit structure 71, and constitutes an incident unit for the object laser beam L2 and the reference laser beam L3 with respect to the hologram recording medium 3. . The exposure recording unit structure 70 is positioned and attached to the light-shielding cartridge housing 45 and holds the entire area in the width direction of the hologram recording medium 3 in the width area of each element hologram to be exposed and recorded. The exposure recording unit structure 70 includes an index matching liquid supply mechanism 73 for injecting an index matching liquid between the light guide block member 72 and the hologram recording medium 3 in the reference laser light incident unit structure 71. Yes.

  The holographic stereogram creating apparatus 10 is configured such that when the refractive index changes greatly between the hologram recording medium 3 and the light guide block member 72, the reference is incident at an acute angle with respect to the surface of the hologram recording medium 3. The laser light L3 may cause problems such as total reflection at the interface between the hologram recording medium 3 and the light guide block member 72. The index matching liquid solves such a problem and adjusts the refractive index between the hologram recording medium 3 and the light guide block member 72.

  The index matching liquid supply mechanism 73 is formed on a part of the light guide block member 72. As shown in FIG. 10, the light guide block member 72 is provided with a plurality of supply small holes 74 having a diameter of 1 mm or less, for example, on the surface side in contact with the hologram recording medium 3. These supply small holes 74 are connected to a liquid tank 76 to which the index matching liquid is supplied via a supply path 75 provided on the lower surface of the light guide block member 72.

  In the index matching liquid supply mechanism 73, a section from the supply small hole 74 to the liquid tank 76 is a closed flow path. For this reason, the index matching liquid supply mechanism 73 prevents the liquid from volatilizing even when a volatile liquid is used as the index matching liquid. Further, the index matching liquid supply mechanism 73 supplies the liquid by the balance between the air pressure acting on the supply small hole 74 that contacts the hologram recording medium 3 and the air pressure acting on the liquid surface inside the liquid tank 76. Will not drain more than necessary.

  In the index matching liquid supply mechanism 73, the supply small holes 74 and the supply path 75 provided in the light guide block member 72 are arranged at positions displaced from the optical paths of the object laser light L2 and the reference laser light L3. If the index matching can be performed perfectly, the supply small holes 74 and the supply path 75 may be provided in the optical path.

  When the hologram recording medium 3 is loaded and comes into contact with the light guide block member 72, the index matching liquid is supplied from the supply small hole 74 due to the action of surface tension, and between the hologram recording medium 3 and the light guide block member 72. Meet.

  As a result, the hologram recording medium 3 is minimized in vibration during exposure recording. Therefore, the holographic stereogram creation device 10 improves the image quality of the created holographic stereogram.

  In addition, the holographic stereogram creating apparatus 10 is suitable for exposure recording of element holograms by the edge-lit method, because the index matching liquid fills between the hologram recording medium 3 and the light guide block member 72. In the edge lit method, a light guide block member is attached to a hologram recording medium, and an element hologram is exposed and recorded in an exposure recording unit.

  The holographic stereogram creation device 10 performs the same operation as that in which the hologram recording medium 3 and the light guide block member 72 are integrated by using an index matching liquid. Suitable for Therefore, the holographic stereogram creation device 10 improves the image quality of the created holographic stereogram.

  The index matching liquid supply mechanism 73 is attached to the cartridge 69 together with the exposure recording unit structure 70 by being positioned by positioning means such as a pin or a recess. For this reason, if the cartridge 69 holds the index matching liquid in the liquid tank 76 only for an amount corresponding to the approximate consumption estimated from the storage amount of the hologram recording medium 3, for example, the index is simultaneously obtained when the cartridge 69 is replaced. Matching solution can be changed. Therefore, the cartridge 69 can greatly improve the maintainability of the holographic stereogram creating apparatus 10.

  A hologram image recording medium cartridge 77 (hereinafter abbreviated as cartridge 77) shown in FIGS. 11 and 12 as an embodiment of the present invention is not provided with the exposure recording portion structure 49 in the first embodiment. A protective film 78 is provided. Since the cartridge 77 has the other configuration equivalent to that of the cartridge 44 described above, the same portions are denoted by the same reference numerals and the description thereof is omitted.

  The cartridge 77 is provided with a protective film 78 disposed so as to cover the first feeding opening 48. The protective film 78 includes an adhesive film 79, a light shielding film 80, and a light transmissive film 81, and these are formed as one continuous film according to this order.

  The adhesive film 79 is always adhered and fixed to the side wall 45 a of the light shielding cartridge housing 45 in the cartridge 77. The protective film 78 is reliably positioned because the adhesive film 79 is always adhered and fixed. The light-shielding film 80 has a light-shielding property processed into black and plays a role of not exposing the hologram recording medium 3 housed in the cartridge 77. The light transmissive film 81 is formed of a transparent material having a refractive index substantially the same as the refractive index of the light guide block member 84 in the hologram recording medium 3 and the reference laser light incident portion structure 83 of the exposure recording portion structure 82. Yes. Therefore, the light transmissive film 81 has a good light transmittance and does not cause birefringence at the interface with the hologram recording medium 3 and the light guide block member 84.

  When the cartridge 77 is not loaded in the holographic stereogram creating apparatus 10 and is in a single state, the protective film 78 is drawn first with the adhesive film 79 as a fixed reference while drawing a natural curve as shown in FIG. It is disposed in the vicinity of the opening 48. At this time, the light shielding film 80 covers the first feeding opening 48 so as not to expose the hologram recording medium 3 accommodated in the cartridge 77. The light-transmitting film 81 is in close contact with the hologram recording medium 3 while slightly cueing the tip of the long hologram recording medium 3 and is attached along the side wall 45 b of the cartridge 77.

  When the cartridge 77 is loaded into the holographic stereogram creating apparatus 10, the protective film 78 peels off the hologram recording medium 3 and the light transmissive film 81 from the side wall 45b as shown in FIG. The film 80 opens the first feeding opening 48. Since the cartridge 77 is mounted on the holographic stereogram creating apparatus 10 to keep light shielding, the hologram recording medium 3 is not exposed by the opening of the first feeding opening 48.

  The peeled light-transmitting film 81 has one surface in contact with the hologram recording medium 3, and the hologram recording medium 3 formed by the object laser light incident part structure 85 and the reference laser light incident part structure 83. Guided to the road. The other surface of the light transmissive film 81 is in contact with the light guide block member 84 in the reference laser light incident portion structure 83 without any gap. That is, the light transmissive film 81 is sandwiched between the hologram recording medium 3 and the light guide block member 84. The light-transmitting film 81 maintains a contact state while the surface in contact with the hologram recording medium 3 slides on the hologram recording medium 3 as the hologram recording medium 3 travels.

  With the above configuration, the holographic stereogram creation device 10 improves the image quality of the created holographic stereogram.

  Further, since the protective film 78 is attached to the cartridge 77, for example, even if a scratch caused by sliding friction or the like due to driving of the hologram recording medium 3 occurs, it can be replaced at the same time when the cartridge 77 is replaced. Therefore, the cartridge 77 can greatly improve the maintainability of the holographic stereogram creating apparatus 10. The durability of the protective film 78 is improved by applying a hard coat to the surface or by using glass or the like.

  Further, the cartridge 77 is provided with a mechanism as shown in the second embodiment so that the index matching liquid is supplied to both surfaces or one surface of the protective film 78, thereby improving the durability of the protective film 78. Can be improved.

  In the holographic stereogram creation apparatus 10, it is important that the parts attached to the cartridge 77 such as the cleaning felt member 47a and the cartridge 77 maintain the same positional relationship again. Therefore, these parts and the cartridge 77 are provided with positioning means such as pins and recesses so that they can be easily attached and detached.

  A hologram image recording medium cartridge 86 (hereinafter abbreviated as “cartridge 86”) shown in FIG. 13 as the fourth embodiment is a modification of the first embodiment. Are omitted by giving the same reference numerals.

  The cartridge 86 is provided with a light guide block member 90 as an exposure recording unit structure 87 on the side on which the object laser beam L2 is incident. In the exposure recording unit structure 87, the object laser beam incident unit structure 88 is arranged on the side on which the object laser beam L2 is incident in the exposure recording unit P1 for the hologram recording medium 3, and constitutes an incident unit for the object laser beam L2. ing. The object laser beam incident part structure 88 includes a one-dimensional diffusion plate 89, a light guide block member 90, and light shielding substrates 91a and 91b.

  The light guide block member 90 has a refractive index of the light guide block member 90 on one surface having an arcuate surface such as 90a and 90b on the side where the hologram recording medium 3 is supplied and on the second feeding opening 50 side. It is integrated with a one-dimensional diffusing plate 89 bonded by an optical adhesive having a close refractive index. The light guide block member 90 is provided with a light shielding substrate 91a on the upper surface thereof, and is shielded from extraneous light from the outside.

  In the object laser light incident part structure 88, the light shielding substrate 91b is attached by positioning means as one side wall of the light shielding cartridge housing 45 constituting the first feeding opening 48 in the cartridge 86, and holds the light guide block member 90. . The object laser light incident part structure 88 is configured such that the surface of the hologram recording medium 3 is positioned perpendicular to the optical axes of the object laser optical system 15B and the reference laser optical system 15C in the exposure recording part P1. It is attached to the cartridge 86 via With this configuration, the cartridge 86 does not need to be provided with a special mechanism for bringing the exposure recording unit structure 87 into close contact with the hologram recording medium 3. The light shielding substrate 91 b functions so that the object laser light L 2 and other light incident on the light guide block member 90 are not incident on the inside of the light shielding cartridge housing 45.

  With the above configuration, since the exposure recording unit structure 87 is attached to the cartridge 86, it can be replaced simultaneously when the cartridge 86 is replaced. Therefore, the cartridge 86 can greatly improve the maintainability of the holographic stereogram creating apparatus 10.

  Further, the cartridge 86 may have a configuration in which the exposure recording unit structure 87 is not provided. In this case, the cartridge 87 may be configured to supply, for example, a film or glass having a one-dimensional diffusion function together with the hologram recording medium 3 as in the third embodiment.

  The embodiment described above is not limited to the above-described configuration. For example, a hologram image recording such as a configuration combining a plurality of embodiments or a configuration using only a part of the embodiments. If there is a feature in the medium cartridge, it can be changed without departing from the gist of the present invention.

Further, each hologram image recording medium cartridge described above has been described as being used in the holographic stereogram creation device 10 that exposes and records a holographic stereogram having only parallax information in the lateral direction (so-called Horizontal Parallel Only). The present invention is of course applicable to a holographic stereogram creation device that creates a holographic stereogram having a parallax information in the horizontal direction and the vertical direction (so-called Full Parallel). In such a holographic stereogram creation apparatus, the object laser beam L2 and the reference laser beam L3 are condensed into dots instead of being condensed into strips by the cylindrical lenses 24 and 33, and the hologram recording medium 3 is collected. The entire surface exposure is performed by two-dimensionally moving relative to the light position.
Further, the holographic stereogram creation device 10 described above is a device that records and records an element hologram image in monochrome on the hologram recording medium 3, but the present invention is not limited to such a holographic stereogram creation device. . The holographic stereogram creating apparatus includes, for example, laser light sources of three primary colors of red, green, and blue, and each optical system and a liquid crystal display device corresponding to these laser light sources. It may be an apparatus that records and records the synthesized element hologram image in color.

It is the figure which demonstrated typically the whole structure of the holographic stereogram preparation apparatus shown as embodiment of this invention. It is the figure which demonstrated typically the optical system of the holographic stereogram preparation apparatus. It is a top view which shows the recording medium running system with which the hologram image recording medium cartridge with which the holographic stereogram preparation apparatus was loaded, and the holographic stereogram preparation apparatus were equipped. It is a schematic diagram which shows the hologram image recording medium cartridge with which the holographic stereogram production apparatus was loaded. It is a front view which shows the recording medium feeding mechanism with which the hologram image recording medium cartridge with which the holographic stereogram creation apparatus was loaded, and the holographic stereogram creation apparatus were equipped, and provided the brake mechanism in the one end part of a core. It is a figure explaining a mode that it is. FIG. 2 is a plan view showing a hologram image recording medium cartridge loaded in the holographic stereogram creating apparatus and a recording medium running system provided in the holographic stereogram creating apparatus, and a pair of sandwiched inside the hologram image recording medium cartridge It is a figure explaining a mode that a roller is arranged. It is a front view which shows the recording medium feeding mechanism with which the hologram image recording medium cartridge with which the holographic stereogram creation apparatus was loaded, and the holographic stereogram creation apparatus were equipped, and provided the brake mechanism in the one end part of the clamping roller. It is a figure explaining a mode that it is. FIG. 2 is a plan view showing a hologram image recording medium cartridge loaded in the holographic stereogram creating apparatus and a recording medium running system provided in the holographic stereogram creating apparatus, and a pair of cleanings inside the hologram image recording medium cartridge. It is a figure explaining a mode that the felt member for arrangement | positioning is arrange | positioned and the one felt member for cleaning is urged | biased by the leaf | plate spring. It is a schematic diagram which shows the state which loaded the hologram image recording medium cartridge shown as 2nd Embodiment in the holographic stereogram production apparatus. It is a schematic perspective view explaining the index matching liquid supply mechanism with which the hologram image recording medium cartridge with which the holographic stereogram production apparatus was loaded is equipped. It is a schematic diagram which shows the state which the hologram image recording medium cartridge shown as 3rd Embodiment is not loaded in the holographic stereogram production apparatus, and is a figure explaining a mode that the protective film has covered the feeding opening part. It is a schematic diagram which shows the hologram image recording medium cartridge with which the holographic stereogram production apparatus was loaded, and is a figure explaining a mode that the protective film is supplied between the recording medium for holograms, and the light guide block member. It is a schematic diagram of the hologram image recording medium cartridge shown as 4th Embodiment with which the holographic stereogram preparation apparatus was loaded, and is a figure explaining a mode that the light guide block member is provided in the object laser beam side. . It is explanatory drawing showing the time change of the drive speed of the recording medium for holograms. It is principal part sectional drawing explaining the recording medium for holograms used for the holographic stereogram production apparatus. It is explanatory drawing of the photosensitive process of the recording medium for the said hologram, The figure (A) shows an initial state, The figure (B) shows an exposure state, The figure (C) shows a fixing state. It is the figure which demonstrated typically the optical system of the conventional holographic stereogram preparation apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 Hologram recording medium, 10 Holographic stereogram creation apparatus, 11 Image data processing part, 12 Control part, 13 Control computer, 14 Holographic stereogram creation part, 15 Optical system, 15A Incident laser optical system, 15B Object laser Optical system, 15C reference laser optical system, 16 image processing computer, 17 storage device, 21 laser light source, 22 half mirror, 28 transmissive liquid crystal display, 34 recording medium feed mechanism, 44, 69, 77, 86 hologram image recording medium Cartridge (cartridge), 45 light-shielding cartridge housing, 46 winding core, 47a, 47b cleaning felt member, 48 first feeding opening, 49, 70, 82, 87 exposure recording unit structure, 50 second feeding opening, 53Brake mechanism, 54, 85, 88 Object laser light incident part structure, 55, 71, 83 Reference laser light incident part structure, 58 Transparent substrate, 61, 72, 84, 90 Light guide block member, 66a, 66b Nipping roller, 68 Leaf spring, 73 index matching liquid supply mechanism, 78 protective film, 80 light-shielding film, 81 light transmissive film, L1 laser light, L2 object laser light, L3 reference laser light

Claims (18)

An object laser beam that is image-modulated on the basis of each element image of the parallax image sequence with respect to the hologram recording medium that is housed and extended, and is coherent with the object laser beam In a hologram image recording medium cartridge that is used by being loaded into a hologram image recording apparatus in which interference fringes generated by incidence of a reference laser beam having an incident light are sequentially exposed and recorded as element holograms,
A film member is provided at a position corresponding to the feeding opening of the light-shielding cartridge housing that shields external light that feeds out the hologram recording medium housed inside from the feeding opening.
When the non-hologram image recording apparatus is loaded, the film member closes the feeding opening, and when the hologram image recording apparatus is loaded, the film member opens the feeding opening and extends to the exposure recording section. From the feeding opening, A hologram image recording medium cartridge, wherein the hologram recording medium that has been fed out is guided to travel. 2. The hologram image recording medium cartridge according to claim 1, wherein the film member is configured such that a portion that closes the feeding opening when the non-hologram image recording apparatus is loaded is provided with a light shielding property. The light-shielding cartridge housing is provided with positioning means that engages with positioning means provided on the hologram image recording apparatus side in a state of being loaded in the hologram image recording apparatus. Item 4. The hologram image recording medium cartridge according to Item 1. The light-shielding cartridge housing is provided with an optical component that faces the exposure recording unit in a state of being loaded in the hologram image recording apparatus and causes the object laser light or the reference laser light to enter the hologram recording medium. The hologram image recording medium cartridge according to claim 1, wherein the hologram image recording medium cartridge is provided. The optical component is formed of a light guide rigid body, and the object laser beam or the reference laser beam is incident from one surface, and the hologram recording medium is in contact with the opposite surface. The hologram image recording medium cartridge according to claim 4, further comprising a light guide block member and a light shielding substrate that shields external light. The light guide block member has an arcuate supply portion and feeding portion at both ends so that the hologram recording medium smoothly contacts the other surface that travels with the hologram recording medium in contact with the light guide block material. 6. The hologram image recording medium cartridge according to claim 5, wherein the hologram image recording medium cartridge is formed. The light guide block member is provided with positioning means that engages with positioning means provided on the hologram image recording apparatus side in a state of being loaded in the hologram image recording apparatus. Item 6. The hologram image recording medium cartridge according to Item 5.   The light-shielding cartridge housing has a one-dimensional diffusion plate function for diffusing the object laser light that is exposed to the exposure recording unit and is transmitted through the hologram recording medium while being loaded in the hologram image recording apparatus. 2. The hologram image recording medium cartridge according to claim 1, further comprising an optical component.   The light shielding cartridge housing is exposed to the exposure recording unit in a state of being loaded in the hologram image recording apparatus, and regulates an incident angle of the object laser beam or the reference laser beam with respect to the hologram recording medium 2. The hologram image recording medium cartridge according to claim 1, further comprising an optical component having a selectivity louver function. 2. The hologram image recording medium cartridge according to claim 1, wherein the hologram recording medium is wound around an outer peripheral portion of a winding core rotatably accommodated in the light shielding cartridge casing.   The hologram image recording medium cartridge according to claim 10, wherein the winding core is a rigid winding core.   12. The hologram image recording according to claim 11, wherein the hologram recording medium is bonded to the outer periphery of the rigid winding core at an end thereof with a bonding strength of 1 N or more per 10 mm width. Media cartridge.   12. The hologram image recording medium cartridge according to claim 11, wherein the hologram recording medium is wound around the outer periphery of the rigid winding core with a winding force of 1 N / cm or more.   2. The hologram according to claim 1, wherein the light shielding cartridge housing is provided with a cleaning unit that performs a cleaning process by rubbing the surface of the hologram recording medium in an interior corresponding to the feeding opening. Image recording medium cartridge.   The liquid-shielding cartridge housing is provided with liquid supply means for supplying an index matching liquid to the hologram recording medium or the film body that is fed from the feeding opening. Hologram image recording medium cartridge.   2. The hologram image recording medium cartridge according to claim 1, wherein the light shielding cartridge housing is provided with brake means for performing running braking on the hologram recording medium fed from the feeding opening.   The brake means is mounted on the hologram image recording apparatus, is made to face the exposure recording unit, and makes the object laser beam or the reference laser beam incident on the hologram recording medium. 17. The hologram image recording medium cartridge according to claim 16, further comprising an elastic member that biases and supports a part toward the hologram recording medium side. The brake means includes the exposure recording unit structure composed of an object laser light incident unit structure and a reference laser light incident unit structure that are arranged opposite to each other with the hologram recording medium interposed therebetween and each have a predetermined functional optical component, An elastic member provided on one of the object laser light incident part structure and the reference laser light incident part structure of the exposure recording part structure and biasing and supporting the functional optical component toward the functional optical component on the other side; Consisting of
17. The hologram image recording medium cartridge according to claim 16, wherein the functional optical component opposed by the elastic force of the elastic member clamps the hologram recording medium to perform running braking.

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