WO2005036279A1 - ホログラフィック記録媒体及びその製造方法 - Google Patents
ホログラフィック記録媒体及びその製造方法 Download PDFInfo
- Publication number
- WO2005036279A1 WO2005036279A1 PCT/JP2004/014239 JP2004014239W WO2005036279A1 WO 2005036279 A1 WO2005036279 A1 WO 2005036279A1 JP 2004014239 W JP2004014239 W JP 2004014239W WO 2005036279 A1 WO2005036279 A1 WO 2005036279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holographic recording
- recording medium
- spacer
- recording material
- holographic
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 73
- 239000000758 substrate Substances 0.000 claims abstract description 48
- 125000006850 spacer group Chemical group 0.000 claims abstract description 45
- 239000011324 bead Substances 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000011345 viscous material Substances 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H1/0252—Laminate comprising a hologram layer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0486—Improving or monitoring the quality of the record, e.g. by compensating distortions, aberrations
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H2001/026—Recording materials or recording processes
- G03H2001/0264—Organic recording material
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
- G03H2001/186—Swelling or shrinking the holographic record or compensation thereof, e.g. for controlling the reconstructed wavelength
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2260/00—Recording materials or recording processes
- G03H2260/30—Details of photosensitive recording material not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S359/00—Optical: systems and elements
- Y10S359/90—Methods
Definitions
- the present invention relates to a holographic recording medium and a method for manufacturing the same.
- a conventional holographic recording medium is configured by sandwiching a dried liquid holographic recording material called a photopolymer material between a pair of translucent substrates.
- the manufacturing method is such that a frame is provided on the upper surface of the light-transmitting substrate, and a photopolymer material is injected into the frame (when a solvent is used, the solvent in the material substantially disappears). (Dry until evaporation) to form a jelly, turn it upward, place the translucent substrate on the press table under the press device, and from the upper press table side, remove the second translucent substrate.
- the holographic recording material is pressed and irradiated with ultraviolet rays in the pressed state to cure the holographic recording material and take it out.
- the distance between the upper press table and the lower press table must be precisely adjusted to be parallel and to a predetermined thickness (for example, about 100 m).
- the present invention has been made in view of the above problems, and provides a holographic recording medium and a method for manufacturing the holographic recording medium, which can improve the parallelism accuracy with a simple configuration and can be manufactured in a short time.
- the purpose is to provide.
- Another object of the present invention is to provide a holographic recording medium in which deformation of a light-transmitting substrate due to polymerization shrinkage of a holographic recording material during holographic recording is suppressed, and a method for manufacturing the same.
- the present inventor has found that by enclosing a recording area in a holographic recording material layer with beads or fibers serving also as a spacer between a pair of translucent substrates, the overall parallelism can be reduced. It has been found that the precision can be improved, the production can be facilitated, and the translucent substrate can be prevented from being deformed due to polymerization shrinkage of the holographic recording material during holographic recording.
- Two light-transmitting substrates a holographic recording material layer sandwiched between the two light-transmitting substrates, and embedded integrally in the holographic recording material layer, between the two light-transmitting substrates.
- the spacer is constituted by a plurality of fibers, and at least one connection gap between the fibers is formed in the one recording area.
- the spacer is made of a fiber, and the outer periphery of the fiber is constricted on the outer periphery of the fiber so that the liquid holographic recording material can enter and exit the recording area intermittently in the longitudinal direction.
- Another spacer is arranged between the spacers arranged along the frame, and the other spacer is arranged in an area surrounded by the spacer arranged along the frame.
- FIG. 1 is an enlarged sectional view showing a holographic recording medium according to Embodiment 1 of the present invention.
- FIG. 3 is a cross-sectional view similar to FIG. 2, showing a holographic recording medium according to a second embodiment of the present invention.
- FIG. 4 is a cross-sectional view taken along a line IV-IV in FIG.
- FIG. 5 is a cross-sectional view similar to FIG. 2, showing a holographic recording medium according to Embodiment 3 of the present invention.
- FIG. 6 is a cross-sectional view taken along a line VI-VI in FIG.
- FIG. 7 is a sectional view similar to FIG. 2 showing a holographic recording medium according to Embodiment 4 of the present invention.
- FIG. 8 is a schematic view showing a method for manufacturing a holographic recording medium according to an embodiment of the present invention. ] Flow chart showing the manufacturing method
- FIG. 10 is a front view showing a press used in the manufacturing method.
- the present invention achieves the above object by disposing beads and fibers of the same diameter as spacers and surrounding a recording area in a holographic recording material layer.
- a holographic recording material layer 18 including a spacer 16 is sandwiched between a first light-transmitting substrate 12 and a second light-transmitting substrate 14.
- the spacer 16 is formed to form a gap between both the first and second translucent substrates 12 and 14 to improve the parallelism.
- the spacer 16 is composed of a large number of spherical beads 16A having the same diameter, such as glass and zirconia, and is embedded in the holographic recording material layer 18 between the first and second translucent substrates 12 and 14.
- the holographic recording material layer 18 inside the squares is rarely arranged in a lattice shape as shown in FIG.
- the one recording area 20 is configured to receive one or a plurality of spots of a recording laser beam. Accordingly, the spot diameter of the recording laser beam (the area where the object light and the reference light interfere with each other in the holographic recording material layer 18 to generate an interference image, that is, the area where information is recorded) is 1 to 2 mm. Then, the recording area 20 is set to be at least larger than a circle having a diameter of 12 mm. In consideration of polymerization shrinkage of the holographic recording material in the recording area 20 during recording, the number of spots in the recording area 20 is smaller.
- the overall parallelism is formed by the spherical beads 16A and does not depend on the accuracy of the press machine. Therefore, if the variation in the spherical diameter of the spherical beads 16A is reduced, the parallelism is improved. In addition, the gap between the first and second translucent substrates 12 and 14, that is, the thickness of the holographic recording material layer 18 becomes uniform.
- the diameter of the spherical beads 16A is selected according to the desired thickness of the holographic recording material layer 18, and is set to 0.1 to 0.2 mm here.
- the first and second translucent substrates 12 and 14 are optically flat and transparent materials at the wavelength of the light source used for holographic recording and reproduction, for example, optical glass materials such as BK7 and synthetic quartz.
- optical glass materials such as BK7 and synthetic quartz.
- plastic materials such as, polycarbonate, PMMA.
- This holographic recording medium 30 is obtained by replacing the spacer 16 in the holographic recording medium 10 of Embodiment 1 shown in FIG. 1 with a spacer 32 composed of a large number of fibers 32A having the same diameter. It is.
- the diameter of the fiber 32A is, for example, 0.1 to 2. Omm, similarly to the spherical bead 16A.
- the spacer 32 is configured by arranging, for example, fibers 32A obtained by cutting hard resin fibers and glass fibers into appropriate lengths in a lattice shape.
- liquid holographic recording material at the time of manufacture (details will be described later) is made to flow into and out of the grid-shaped squares.
- the fibers 32A are also configured as compared with the case where the spherical beads 16A of the first embodiment are arranged in a lattice pattern at the time of manufacture, the arrangement work is easy. It is.
- Fiber 32A has a greater resistance to polymerization shrinkage when recording interference fringes in recording area 20 than spherical beads, so that first and second translucent substrates 12 14 can be further suppressed.
- FIGS. 5 and 6 Next, a third embodiment shown in FIGS. 5 and 6 will be described.
- the spacers 32 are formed by arranging the fibers 32A in a lattice shape. At this time, the gaps 33 are formed between the fibers 32A, and the liquid Although the fluidity of the holographic recording material is ensured, the spacer 42 of the holographic recording medium 40 according to the third embodiment is arranged such that the fibers 42A are arranged without gaps, and the recording area is formed on an appropriate fiber 42A. A constricted portion 43 is formed to secure the inflow and outflow of the liquid holographic recording material to 20.
- the fibers 42A can be arranged without gaps, and the arrangement at the time of manufacturing is Is easy. Further, since the fibers 42A are arranged in contact with each other, the first and second translucent substrates 12, which have a large resistance to polymerization shrinkage generated when recording interference fringes in the recording area 20, 14 can be further suppressed.
- the holographic recording medium 50 is configured such that the spacer 52 is formed by mixing the spherical beads 52A and the fibers 52B.
- step 101 a frame 54 is formed on the first light-transmitting substrate 12, and then the process proceeds to step 102, where the frame 54 is Then, a hybrid material 56, which is a liquid holographic recording material, is injected.
- a hybrid material 56 which is a liquid holographic recording material
- the hybrid material 56 for example, there is a material in which an inorganic glass network is filled with a photopolymer as shown in Japanese Patent No. 3039165.
- the spherical beads 58 are arranged along the inner periphery of the frame 54. At this time, if the solvent in the hybrid material 56 evaporates beyond a certain amount, the viscosity of the hybrid material 56 increases, and the spherical beads 58 cannot be put into the hybrid material 56. It is advisable to arrange the spherical beads 58 immediately after injection into the body 54 (see FIG. 8 (B)). Here, the diameter of the spherical beads 58 was 100 / zm.
- step 104 the frame 54 is removed as shown in FIG. 8 (C). This timing is about 30 minutes after the injection of the hybrid material 56 into the inside of the frame 54. This In the meantime, the solvent in the hybrid material 56 evaporates a little and the viscosity of the hybrid material 56 increases, so that even when the frame 54 is removed, the hybrid material 56 flows out of the gap between the spherical beads 58 to the outside. There is no end.
- the hybrid material 56 is dried, for example, for two days until the solvent in the hybrid material 56 is almost evaporated. As a result, the hybrid material 56 becomes jelly-like.
- step 105 as shown in FIG. 8D, the jelly-shaped bridging material 56 is pressed together with the first light-transmitting substrate 12 by a pressing device 60 (see FIG. 10).
- the first translucent substrate 12 and the jelly-like hybrid material 56 are placed on the lower press table 61 of the press device 60 with the bridging material 56 facing upward.
- the second translucent substrate 14 is mounted on the upper press table 62 of the press device 60 via the permeable material 63.
- the elastic material 63 is made of, for example, hard rubber or the like.
- the press device 60 is vertically movable by the lower press table 61 installed on the base plate 64 and the guide post 65 erected on the base plate 64, and faces the lower press table 61.
- the upper press table 62 provided, a stopper 66 for regulating a downward moving range of the upper press table 62, and the flexible material attached to a lower side surface of the upper press table 62 in FIG. 63.
- the stopper portion 66 includes a support 66A erected on the base plate 64, a bolt 66C attached to the upper end of the support 66A via a spacer portion 66B so as to be adjustable in height, and A block 66D which is attached to the press table 62 side and comes into contact with the bolt 66C when the upper press table 62 is lowered, and a force are also configured, and by changing the thickness of the spacer portion 66B, the upper part is changed.
- the downward movement limit of the press table 62 can be set.
- the stopper portion 66 is formed of a jelly-shaped hybrid on the lower press table 61 by the second translucent substrate 14 supported by the upper press table 62 via the elastic material 63.
- the thickness of the spacer portion 66B is selected in consideration of the elastic deformation of the elastic member 63 so that the elastic member 63 can be sufficiently pressed against the pad material 56.
- the first light-transmitting substrate 12 and the jelly hybrid material 56 Then, by lowering the upper press table 62, the second translucent substrate 14 is pressed, and in this state, in step 106, ultraviolet rays (UV) are irradiated, and the outer periphery of the jelly-like hybrid material 56 is exposed. Allow the part to cure.
- UV ultraviolet rays
- the upper press table 62 is raised to integrate the first transparent substrate 12, the hybrid material 56, the spherical beads 58, and the second transparent substrate.
- the holographic recording medium 10, which is as strong as the optical substrate 14, is removed from the press device 60.
- the inner portion of the hybrid material 56 whose outer peripheral portion is hardened is irradiated with UV light to be hardened.
- the holographic recording medium manufactured by the manufacturing method shown in FIGS. 8 and 9 is, for example, a blue glass substrate (35 mm ⁇ 75 mm ⁇ 1.2 t :) as the first and second translucent substrates 12 and 14.
- a blue glass substrate 35 mm ⁇ 75 mm ⁇ 1.2 t :
- the variation in the total thickness of the holographic recording medium was 5 m
- the parallelism was 0.77 / zmZcm.
- the conventional manufacturing method that is, adjustment of the parallelism between the lower press table 61 and the upper press table 62 in the press device 60, fine adjustment of the stopper 66, etc., and the elastic material 63 Even in the case of the best results obtained without using, under the same conditions as above, the total thickness variation was 9 ⁇ m, and the parallelism was 1.38 ⁇ mZcm.
- the embodiment of the above-described manufacturing method uses a spherical bead 58 as a spacer.
- This manufacturing method is not limited to the spherical bead, and the holographic recording medium 30 is not limited to the spherical bead.
- the power of using the liquid hybrid material 56 as a holographic recording material is not limited to this. Type) may be used. In this case, the drying step in step 104 in the flowchart shown in FIG. 9 becomes unnecessary.
- the diameter of the spherical bead or the fiber as the spacer is determined according to the thickness of the holographic recording layer.
- the target value of the degree of parallelism may be used or divided for each application depending on the bead and fiber materials (glass, zirconia, etc.) and the accuracy of the variation in their diameter.
- the overall parallelism does not depend on the accuracy of the press machine. Therefore, if the variation in the diameter of the spacer is reduced, the parallelism can be improved and the holographic recording material layer can be improved. Since the thickness of the recording material is uniform and a spacer is formed around the recording area, the warpage of the substrate due to the polymerization shrinkage of the recording material during holographic recording can be suppressed.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/574,468 US7545546B2 (en) | 2003-10-09 | 2004-09-29 | Holographic recording medium and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003350341A JP4407228B2 (ja) | 2003-10-09 | 2003-10-09 | ホログラフィック記録媒体の製造方法 |
JP2003-350341 | 2003-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005036279A1 true WO2005036279A1 (ja) | 2005-04-21 |
Family
ID=34431044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/014239 WO2005036279A1 (ja) | 2003-10-09 | 2004-09-29 | ホログラフィック記録媒体及びその製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7545546B2 (ja) |
JP (1) | JP4407228B2 (ja) |
WO (1) | WO2005036279A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101194308A (zh) * | 2005-06-08 | 2008-06-04 | 皇家飞利浦电子股份有限公司 | 全息存储介质、包含间隔物的记录层 |
KR100741980B1 (ko) * | 2005-07-06 | 2007-07-23 | 엘지전자 주식회사 | 다초점 렌즈 |
JP2007233143A (ja) * | 2006-03-02 | 2007-09-13 | Sony Corp | ホログラム記録媒体 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03220503A (ja) * | 1990-01-26 | 1991-09-27 | Fujitsu Ltd | ホログラム光学素子の接着方法 |
JPH0962172A (ja) * | 1995-06-15 | 1997-03-07 | Dainippon Printing Co Ltd | ホログラムアレーの複製方法 |
JP2001005368A (ja) * | 1999-06-18 | 2001-01-12 | Mitsubishi Chemicals Corp | 三次元光記録媒体用基体及び三次元光記録媒体の製造方法 |
JP2001281643A (ja) * | 2000-04-03 | 2001-10-10 | Nec Corp | 液晶光学素子およびその製造方法 |
JP2002221621A (ja) * | 2001-01-26 | 2002-08-09 | Sony Corp | 偏光選択性ホログラム光学素子、画像表示素子及び画像表示装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4775225A (en) * | 1985-05-16 | 1988-10-04 | Canon Kabushiki Kaisha | Liquid crystal device having pillar spacers with small base periphery width in direction perpendicular to orientation treatment |
JPS6259922A (ja) * | 1985-09-10 | 1987-03-16 | Canon Inc | 強誘電性液晶素子 |
JP3039165B2 (ja) | 1992-11-10 | 2000-05-08 | 日本板硝子株式会社 | 光記録膜及びその製造方法 |
US5477347A (en) * | 1993-07-14 | 1995-12-19 | Tamarack Storage Devices | Method and apparatus for isolating data storage regions in a thin holographic storage media |
-
2003
- 2003-10-09 JP JP2003350341A patent/JP4407228B2/ja not_active Expired - Fee Related
-
2004
- 2004-09-29 WO PCT/JP2004/014239 patent/WO2005036279A1/ja active Application Filing
- 2004-09-29 US US10/574,468 patent/US7545546B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03220503A (ja) * | 1990-01-26 | 1991-09-27 | Fujitsu Ltd | ホログラム光学素子の接着方法 |
JPH0962172A (ja) * | 1995-06-15 | 1997-03-07 | Dainippon Printing Co Ltd | ホログラムアレーの複製方法 |
JP2001005368A (ja) * | 1999-06-18 | 2001-01-12 | Mitsubishi Chemicals Corp | 三次元光記録媒体用基体及び三次元光記録媒体の製造方法 |
JP2001281643A (ja) * | 2000-04-03 | 2001-10-10 | Nec Corp | 液晶光学素子およびその製造方法 |
JP2002221621A (ja) * | 2001-01-26 | 2002-08-09 | Sony Corp | 偏光選択性ホログラム光学素子、画像表示素子及び画像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4407228B2 (ja) | 2010-02-03 |
US20070013982A1 (en) | 2007-01-18 |
JP2005115105A (ja) | 2005-04-28 |
US7545546B2 (en) | 2009-06-09 |
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