WO2008001434A1 - Dispositif et procédé d'enregistrement d'hologramme - Google Patents
Dispositif et procédé d'enregistrement d'hologramme Download PDFInfo
- Publication number
- WO2008001434A1 WO2008001434A1 PCT/JP2006/312874 JP2006312874W WO2008001434A1 WO 2008001434 A1 WO2008001434 A1 WO 2008001434A1 JP 2006312874 W JP2006312874 W JP 2006312874W WO 2008001434 A1 WO2008001434 A1 WO 2008001434A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording
- light
- incident angle
- reference light
- hologram recording
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 13
- 230000035945 sensitivity Effects 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims description 13
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 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
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
-
- 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
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/2645—Multiplexing processes, e.g. aperture, shift, or wavefront multiplexing
- G03H1/265—Angle multiplexing; Multichannel holograms
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1362—Mirrors
Definitions
- the present invention relates to a hologram recording apparatus and a hologram recording method for performing multiplex recording of holograms by a so-called angle multiplex recording method.
- Patent Document 1 A conventional hologram recording method is disclosed in Patent Document 1.
- the one disclosed in this document irradiates recording light perpendicularly to the hologram recording medium, and controls the tilt of the multi-mirror to the irradiation portion of the recording light so as not to change the incident angle.
- the reference light is irradiated. According to this, the reference light whose incident angle is changed and the recording light having a constant incident angle interfere with each other at the irradiated portion, whereby various holograms corresponding to the change in angle are recorded in a multiplexed manner.
- multiple recorded holograms exist in the irradiated area in an optically interlaced state, but typically, the irradiated area is likened to a booklet. Recorded and considered to be. That is, each page corresponds to the incident angle of the reference light.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-234145
- a general hologram recording medium has a characteristic that the recording sensitivity decreases in an inverse proportion as the amount of incident light increases.
- the average recording sensitivity of the recording start page is about 6.50
- the recording sensitivity of the recording end page is about 1.167 due to conditions such as diffraction efficiency r ?. If recording is performed when the light intensity at the time of recording on each page is constant and the incident light quantity obtained by time integration of the light intensity reaches a level corresponding to the recording sensitivity, the irradiation of the recording start page is performed.
- the irradiation time of the recording end page is approximately 6.5 times the time.
- the angle multiplexing recording method is used.
- the incident angle of illumination is changed, and the greater the incident angle, the lower the light intensity based on the illuminance cosine law. Therefore, for example, when the incident angle of the reference light is changed from a small angle to a large angle, the light intensity decreases with the recording sensitivity, and the irradiation time is gradually extended in consideration of this light intensity decrease. There must be. In other words, when the incident angle of the reference beam is gradually increased, the irradiation time becomes remarkably longer as the number of recording pages increases, so there is a problem that a high speed cannot be expected for the recording speed. .
- An object of the present invention is to provide a hologram recording apparatus and a hologram recording method capable of increasing the recording speed at the time of multiplex recording as much as possible.
- the present invention takes the following technical means.
- the hologram recording apparatus uses a hologram recording medium having a characteristic that recording sensitivity decreases as the amount of incident light increases, and irradiates the hologram recording medium with recording light.
- hologram recording is performed by irradiating the recording light irradiation site with reference light while variably controlling the incident angle with respect to the hologram recording medium, and multiplex-recording holograms on the irradiation site by interference between the recording light and the reference light.
- the apparatus includes an incident angle variable control unit that variably controls the incident angle of the reference light within a predetermined angle range, and the incident angle variable control unit reduces the incident angle of the reference light to a large angle and a small force. It is configured to change and is characterized by that.
- an irradiation time control unit that controls the irradiation time of the recording light and the reference light each time the incident angle of the reference light is changed is provided, and the irradiation time control unit includes the incidence of the reference light. Based on the light intensity that changes according to the angle, the irradiation time is controlled so that the incident light quantity obtained by time-integrating the light intensity becomes a level corresponding to the recording sensitivity.
- the hologram recording method provided by the second aspect of the present invention uses a hologram recording medium having a characteristic that the recording sensitivity decreases as the amount of incident light increases, and irradiates the hologram recording medium with recording light.
- FIG. 1 is a perspective view showing an embodiment of a hologram recording apparatus to which the present invention is applied.
- FIG. 2 is a cross-sectional view of main parts of the hologram recording apparatus shown in FIG.
- FIG. 3 is an explanatory diagram for explaining an optical action of the hologram recording apparatus shown in FIG. 1.
- FIG. 4 is an explanatory diagram for explaining the optical action of the hologram recording apparatus shown in FIG. 1.
- FIG. 5 is an explanatory diagram for explaining an optical action of the hologram recording apparatus shown in FIG. 1.
- FIG. 6 is an explanatory diagram for explaining an optical action by a comparative example.
- FIG. 7 is an explanatory diagram for explaining an optical action of the hologram recording device shown in FIG. 1 and a comparative example.
- FIG. 8 is an explanatory diagram for explaining the recording characteristics of a conventional hologram recording medium.
- the chief ray has a constant incident angle 0 s (FIG. 2) with the disc-shaped hologram recording medium B tilted in a predetermined direction.
- the recording light S is irradiated so that the recording light S becomes the same as the recording light S
- the reference light R is irradiated to the irradiation part p of the recording light S while the incident angle is variably controlled in a predetermined angle range in the opposite direction to the recording light S.
- the hologram is multiplexed and recorded by the angle multiplexing recording method by the interference between the recording light S and the reference light R.
- a hologram recording apparatus A includes an optical shirter (irradiation time control means) 1 for controlling the irradiation time, a beam splitter 2 for separating the recording light S and the reference light R, and a hologram recording medium B.
- An optical system for recording light for irradiating the recording light S and an optical system for reference light for irradiating the reference light R while variably controlling the incident angle with respect to the hologram recording medium B are provided.
- a light source that emits a laser beam and a collimator lens that converts the laser beam into parallel light are provided.
- the optical system for recording light is a spatial light modulator 3, a zoom lens 4, a half mirror 5, and an objective lens 6 for recording light.
- the optical system for reference light includes fixed mirrors 10 and 11, recording and reproducing mirrors 12 and 13, and recording and reproducing mirrors 12 and 13 so as to variably control the incident angle of reference light R. It is composed of an incident angle variable control means 20 that swings integrally.
- the incident angle variable control means 20 includes a U-shaped arm member 21 and a drive motor 22.
- the recording mirror 12 is fixed to one end of an arm member 21 arranged on the upper surface side of the hologram recording medium B.
- the reproduction mirror 13 is fixed to the other end of the arm member 21 disposed on the lower surface side of the hologram recording medium B.
- the optical shirter 1, the beam splitter 2, and the optical system for recording light and reference light are mounted on a moving head (not shown) that can reciprocate in the radial direction of the hologram recording medium B.
- the hologram recording medium B has a structure in which, for example, a photopolymer recording layer 90 is used as an intermediate layer, and translucent cover layers 91 and 92 are laminated on both sides of the recording layer 90.
- the recording layer 90 has a characteristic that the recording sensitivity decreases inversely as the amount of incident light increases as in the conventional case.
- the recording layer 90 has a thickness of about 1 mm, and the cover layers 91 and 92 have a thickness of about 0.5 mm.
- a laser beam emitted from a light source (not shown) is converted into parallel light by a collimator lens (not shown), and then enters the beam splitter 2 through the optical shirter 1.
- the optical shirter 1 transmits and blocks light through on / off control.
- the time for irradiating the hologram recording medium B with the recording light S and the reference light R in a state where light is transmitted is controlled.
- the laser beam incident on the beam splitter 2 is separated into recording light S and reference light R.
- the recording light S is guided to the spatial light modulator 3, while the reference light R is guided to the recording mirror 12 through the fixed mirrors 10 and 11.
- the spatial light modulator 3 is, for example, a transmissive liquid crystal device, and modulates the incident recording light S into light of a two-dimensional pixel pattern according to information to be recorded.
- the recording light S emitted from the spatial light modulator 3 is guided to the half mirror 5 through the zoom lens 4 and finally converted into parallel light for each pixel by the recording light objective lens 6.
- Hologram recording medium Body B is irradiated.
- the objective lens 6 is arranged such that its optical axis forms a constant incident angle ⁇ s with respect to the hologram recording medium B. Note that the light corresponding to each pixel emitted from the spatial light modulator 3 force is applied to the hologram recording medium B through the objective lens 6 with different incident angles.
- the incident angle ⁇ s of the recording light S is set to 35 deg.
- the recording light S irradiation site p is formed so as to form a parallelogram-shaped photosensitive region in the recording layer 90 as shown in FIG. Figure 2 shows that the parallelogram-shaped photosensitive area has the maximum width.
- the recording and reproducing mirrors 12 and 13 are rocked around a predetermined axis X integrally with the arm member 21.
- the recording mirror 12 is disposed obliquely above the irradiation site P in the vicinity of the recording light objective lens 6, and the reference light R traveling substantially perpendicularly to the hologram recording medium B from the fixed mirror 11. Is reflected obliquely downward toward the irradiation site p.
- the reproduction mirror 13 is arranged obliquely below the irradiation site p on the opposite side of the recording light objective lens 6 across the hologram recording medium B, and travels substantially parallel to the hologram recording medium B.
- the reflected reference light R is reflected obliquely upward toward the irradiation site p.
- a galvanometer mirror may be employed as the recording and reproducing mirror.
- the light corresponding to each pixel need not be converted into parallel light by the objective lens 6 and may be convergent light. When the light becomes convergent light, it is converted into convergent light having a relatively small convergence angle by the objective lens 6 which does not become parallel light in the hologram recording medium B.
- the recording and reproducing mirrors 12 and 13 in a state where the incident angle of the reference light R is maximized are indicated by solid lines.
- the incident angle of the reference light R is, for example, 75 deg.
- the recording mirror 12 is swung in a counterclockwise direction by a predetermined angle within a predetermined angle range.
- the recording mirror 12 is temporarily stopped at every desired angle, and the optical shirter 1 is turned on each time to transmit the laser beam.
- the irradiation site p is simultaneously irradiated with the recording light S and the reference light R, and the reference light R is irradiated.
- a hologram corresponding to the incident angle of the illumination R is recorded in units of pages.
- the time for which it is turned on is controlled in units of pages.
- the recording light S and the reference light R are controlled so that the irradiation time differs for each page.
- the recording mirror 12 rotates and moves to the next stop position, the recording light S and the reference light R are not irradiated while the optical shirter 1 is turned off. That is, the recording mirror 12 sequentially rotates and moves from the position indicated by the solid line to the position indicated by the phantom line, and the incident angle of the reference light R is decreased from 75 deg to 50 deg, for example, in predetermined angular increments.
- the optical shutter 1 When multiplex recording is completed for one irradiation site p, the optical shutter 1 is turned off and the recording light S and the reference light R are not irradiated. During this time, the recording mirror 12 is incident on the incident angle of the reference light R. It returns to the original position (position indicated by the phantom line) where becomes the maximum.
- the recording light S is irradiated onto the irradiation part p with the incident angle ⁇ s of the principal ray being 35 deg.
- the incident angle of the reference beam R changes from 50deg to 80deg with respect to the incident angles of the recording beam S of 11.7deg, 35deg, and 58.3deg
- the diffraction efficiency changes as shown in Fig. 3. .
- the diffraction efficiency when the incident angle of the reference light R is 50 deg. Is about 13%, regardless of the incident angle of the recording light S, compared with the diffraction efficiency when the incident angle is 75 deg.
- Such an increase in diffraction efficiency is thought to contribute to shortening the recording time.
- the reference light R is changed so that the incident angle gradually decreases from 75 deg to 50 deg.
- the recording light S is irradiated to the irradiation part p so as to blur the Fourier image.
- Ir: Is 3: l
- Ir and Is are the light intensities (light flux per unit area) of the reference light R and the recording light S with respect to the irradiation site p.
- the reference beam R and the recording beam S are separated and the intensity is adjusted by the beam splitter 2 and the spatial light modulator 3.
- the ratio of the light intensity is Ir: Is, a hologram is recorded in the irradiation site p with a good contrast.
- the incident angle is In the case of 50 deg (state shown by a broken line), in the case of 75 deg (state shown by a thin line), the irradiation width is expanded to about 2.484 times due to the illumination cosine law. As the irradiation width increases, the light intensity decreases. That is, when the light intensity Ir of the reference light R before entering the recording mirror 12 is always constant and the incident angle of the reference light R is changed from 75 deg to 50 deg, the irradiation width The light intensity Ir of the reference light R gradually increases in accordance with the reduction of.
- the transmittance T of the reference light R at the irradiation site p decreases as the incident angle increases, as shown in FIG.
- the transmittance T at an incident angle of 75 deg is about 0.75.
- the light intensity Ir of the reference light R is 1Z2.484 times that of the incident angle of 50 deg.
- the light intensity of the recording light is 0.275, and the light intensity of the recording light S is 0.092.
- the recording sensitivity at the start of recording of the hologram recording medium B is 6.50, the recording sensitivity at the end of recording is 1.167, and the diffraction efficiency is 1 at the light intensity Is of the recording light S described above at an incident angle of 50 deg.
- the recording time per page when the incident angle of the reference light R is changed from 75 deg to 50 deg is as follows.
- the sum of such recording time and light intensity is the amount of incident light, and it is considered that recording is performed when this amount of incident light reaches a level corresponding to the recording sensitivity.
- the page recording time and the recording sensitivity vary with the transition shown in FIG. Will be.
- the total recording time for all pages when the incident angle is changed from 75 deg to 50 deg is obtained by integrating the curve (plotted curve) indicating the page recording time with the incident angle.
- the total recording time for all pages corresponds to the area surrounded by the curve indicating the page recording time and the horizontal axis.
- the recording time for each page when the incident angle of the reference light R is changed from 50 deg to 75 deg on the contrary is as follows.
- the hologram recording apparatus A of the present embodiment by gradually changing the incident angle of the reference light R from a large angle to a small angle, the light intensity gradually increases although the recording sensitivity decreases. Since the recording time increases, it is not necessary to greatly increase the recording time for each page. The total recording time for all pages can be shortened as much as possible, and the recording speed can be increased as fast as possible.
- An unnecessary exposure region due to only the reference light R is generated around the irradiation site p. This unnecessary exposure area becomes larger as the incident angle of the reference light R increases due to the illumination cosine law.
- the irradiation area of the reference light R at an incident angle of 50 deg is 1.1, and the recording light S is irradiated. Assume that the area is 1. In other words, it is assumed that a 10% unnecessary exposure region occurs when the incident angle is 50 deg. Based on this assumption, the following concept of unnecessary exposure coefficient is introduced for unnecessary exposure areas.
- the unnecessary exposure coefficient when the incident angle 75deg force is also changed to 50deg is as follows.
- the unnecessary exposure coefficient when the incident angle is changed from 50 deg to 75 deg is as follows.
- Fig. 7 shows the transition of the unnecessary exposure coefficient when the incident angle is changed from 75 deg to 50 deg, and conversely, when the incident angle is changed from 50 deg to 75 deg.
- the unnecessary exposure coefficient is related to the recording capacity in page units, and it is considered that the recording capacity decreases as the unnecessary exposure coefficient increases. Referring to the figure, when the unnecessary exposure coefficient is compared between the case where the incident angle is changed from 75 deg to 50 deg and the case where the incident angle is changed from 50 deg to 75 deg, all the values obtained by integration at the incident angle are obtained.
- the unnecessary exposure coefficient for a page is about 1.92 times when the incident angle is changed from 50 deg to 75 deg, compared to when the incident angle is changed from 75 deg to 50 deg.
- the incident angle of the reference light R is large and gradually changed from the angle to the angle.
- the recording capacity can be increased as much as possible.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/312874 WO2008001434A1 (fr) | 2006-06-28 | 2006-06-28 | Dispositif et procédé d'enregistrement d'hologramme |
JP2008522239A JPWO2008001434A1 (ja) | 2006-06-28 | 2006-06-28 | ホログラム記録装置およびホログラム記録方法 |
CNA2006800551258A CN101473280A (zh) | 2006-06-28 | 2006-06-28 | 全息记录装置以及全息记录方法 |
US12/338,150 US20090129234A1 (en) | 2006-06-28 | 2008-12-18 | Hologram recording device and hologram recording method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/312874 WO2008001434A1 (fr) | 2006-06-28 | 2006-06-28 | Dispositif et procédé d'enregistrement d'hologramme |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/338,150 Continuation US20090129234A1 (en) | 2006-06-28 | 2008-12-18 | Hologram recording device and hologram recording method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008001434A1 true WO2008001434A1 (fr) | 2008-01-03 |
Family
ID=38845212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/312874 WO2008001434A1 (fr) | 2006-06-28 | 2006-06-28 | Dispositif et procédé d'enregistrement d'hologramme |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090129234A1 (ja) |
JP (1) | JPWO2008001434A1 (ja) |
CN (1) | CN101473280A (ja) |
WO (1) | WO2008001434A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016017020A1 (ja) * | 2014-08-01 | 2016-02-04 | 日立コンシューマエレクトロニクス株式会社 | 光情報記録再生方法、光情報記録再生装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015187185A1 (en) * | 2014-06-07 | 2015-12-10 | Yuzuru Takashima | Optical information recording/reproducing apparatus and method |
JP6410618B2 (ja) * | 2015-01-19 | 2018-10-24 | 株式会社ニューフレアテクノロジー | 欠陥検査装置 |
Citations (3)
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JPH03237481A (ja) * | 1990-02-15 | 1991-10-23 | Nissan Motor Co Ltd | ホログラム露光装置 |
JPH0493881A (ja) * | 1990-08-06 | 1992-03-26 | Hitachi Maxell Ltd | ホログラムメモリ |
JP2005099176A (ja) * | 2003-09-22 | 2005-04-14 | Fuji Xerox Co Ltd | ホログラム記録方法 |
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DE1965261C3 (de) * | 1969-12-29 | 1974-10-24 | Krone Gmbh, 1000 Berlin | Verfahren und Vorrichtung zur zeitabhängigen optischen Tonaufnahme und -wiedergabe |
US5894465A (en) * | 1997-01-07 | 1999-04-13 | Rrad-Rite Corporation | Transmissive data storage media and an optical head using holographic or acousto-optical deflection |
US5896359A (en) * | 1997-03-18 | 1999-04-20 | Northrop Grumman Corporation | Spinning disc volume holographic memory |
US5835470A (en) * | 1997-06-24 | 1998-11-10 | Lucent Technologies Inc. | System and method for steering focal plane data using cylindrical coordinates to access data locations in a holographic memory |
JP3521113B2 (ja) * | 1998-03-27 | 2004-04-19 | パイオニア株式会社 | 体積ホログラフィックメモリ光情報記録再生装置 |
JP3674903B2 (ja) * | 1999-03-31 | 2005-07-27 | パイオニア株式会社 | 体積ホログラフィックメモリ光情報記録再生装置 |
JP4127484B2 (ja) * | 2002-05-17 | 2008-07-30 | パイオニア株式会社 | 角度多重型のホログラム記録装置及び方法並びにホログラム再生装置及び方法 |
KR100536711B1 (ko) * | 2003-05-31 | 2005-12-14 | 주식회사 대우일렉트로닉스 | 홀로그래픽 롬용 구동거울 |
JP2005116063A (ja) * | 2003-10-08 | 2005-04-28 | Tdk Corp | ホログラフィックメモリー再生装置、ホログラフィック記録再生装置、ホログラフィック記録再生方法及びホログラフィック記録媒体 |
KR100569396B1 (ko) * | 2003-10-22 | 2006-04-07 | 주식회사 대우일렉트로닉스 | 홀로그래픽 메모리의 각도 다중화 장치 |
JP4347667B2 (ja) * | 2003-11-12 | 2009-10-21 | Tdk株式会社 | ホログラフィックメモリ再生方法、ホログラフィックメモリ再生装置及びホログラフィック記録再生装置 |
JP2006155831A (ja) * | 2004-11-30 | 2006-06-15 | Fujitsu Ltd | ホログラム記録媒体及びホログラム記録再生装置 |
JP4513543B2 (ja) * | 2004-12-20 | 2010-07-28 | ソニー株式会社 | ホログラム再生装置及びホログラム再生方法 |
JP2006244638A (ja) * | 2005-03-04 | 2006-09-14 | Sanyo Electric Co Ltd | ホログラム再生装置、ホログラム再生方法 |
JP2007240580A (ja) * | 2006-03-06 | 2007-09-20 | Fujitsu Ltd | ホログラム記録再生装置 |
WO2008001416A1 (fr) * | 2006-06-26 | 2008-01-03 | Fujitsu Limited | Dispositif d'enregistrement d'hologramme et procédé d'enregistrement/reproduction d'hologramme |
KR100765796B1 (ko) * | 2006-10-24 | 2007-10-15 | 삼성전자주식회사 | 참조광 각도 제어 신호 생성 시스템 및 이를 적용한홀로그래픽 정보 기록 및/또는 재생장치 |
-
2006
- 2006-06-28 WO PCT/JP2006/312874 patent/WO2008001434A1/ja active Application Filing
- 2006-06-28 CN CNA2006800551258A patent/CN101473280A/zh active Pending
- 2006-06-28 JP JP2008522239A patent/JPWO2008001434A1/ja not_active Withdrawn
-
2008
- 2008-12-18 US US12/338,150 patent/US20090129234A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03237481A (ja) * | 1990-02-15 | 1991-10-23 | Nissan Motor Co Ltd | ホログラム露光装置 |
JPH0493881A (ja) * | 1990-08-06 | 1992-03-26 | Hitachi Maxell Ltd | ホログラムメモリ |
JP2005099176A (ja) * | 2003-09-22 | 2005-04-14 | Fuji Xerox Co Ltd | ホログラム記録方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016017020A1 (ja) * | 2014-08-01 | 2016-02-04 | 日立コンシューマエレクトロニクス株式会社 | 光情報記録再生方法、光情報記録再生装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101473280A (zh) | 2009-07-01 |
US20090129234A1 (en) | 2009-05-21 |
JPWO2008001434A1 (ja) | 2009-11-26 |
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