WO2005047987A1 - ホログラフィック記録方法、ホログラフィック記録装置、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、ホログラフィック記録再生装置、及びホログラフィック記録媒体 - Google Patents
ホログラフィック記録方法、ホログラフィック記録装置、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、ホログラフィック記録再生装置、及びホログラフィック記録媒体 Download PDFInfo
- Publication number
- WO2005047987A1 WO2005047987A1 PCT/JP2004/015919 JP2004015919W WO2005047987A1 WO 2005047987 A1 WO2005047987 A1 WO 2005047987A1 JP 2004015919 W JP2004015919 W JP 2004015919W WO 2005047987 A1 WO2005047987 A1 WO 2005047987A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- holographic recording
- recording medium
- holographic
- reference light
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 99
- 238000007493 shaping process Methods 0.000 claims abstract description 27
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- 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
- G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
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- 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
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- 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
- G03H1/0465—Particular recording light; Beam shape or geometry
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- 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
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- 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
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- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
Definitions
- Holographic recording method holographic recording device, holographic memory reproducing method, holographic memory reproducing device, holographic recording / reproducing device, and holographic recording medium
- the present invention relates to a holographic recording method for recording information by forming interference fringes between an object beam and a reference beam on a holographic recording medium, a holographic recording device for recording information, and a holographic recording device.
- the present invention relates to a holographic memory reproducing method and apparatus for reproducing information, a holographic recording and reproducing apparatus for performing holographic recording and reproduction, and a holographic recording medium on which information is formed by interference fringes.
- a holographic recording medium on which information is recorded is irradiated only with object light.
- a reference at the time of recording is made according to the correlation with the data to be reproduced among a large number of data pages recorded on the holographic recording medium.
- the diffracted light of the object light is emitted in the same direction as the light, and the diffracted light is detected by an address detector constituted by a plurality of CCDs, image sensors or photodetector arrays.
- a photodetector array that constitutes a laser detector must separate and detect the diffracted lights so as not to cause crosstalk with each other in accordance with the incident angle modulation interval of the reference light at the time of recording.
- the interval between the incident angles of the reference light at the time of recording is generally set to a range of 10 mm to 11 degrees.
- the distance of the address detector to the holographic recording medium shall be about 20cm. If the modulation angle interval is reduced in order to increase the recording capacity of the holographic recording medium, it is necessary to reduce the holographic recording medium power in order to prevent the beam diameter on the address detector from overlapping. Since the distance must be set, there is a problem that the device capacity is increased.
- the present invention has been made in view of the above problems, and has an address detector and a holographic apparatus that do not reduce the beam diameter of object light or increase the angle modulation interval of reference light.
- a holographic recording method a holographic recording device, a holographic memory reproducing method, a holographic memory reproducing device, a holographic recording / reproducing device, and a holographic recording medium which can shorten the distance to a recording medium. It is for this purpose.
- the present inventor has made the beam shape of the reference light into an elongated shape in which the minor axis coincides with the angle modulation direction, thereby obtaining the beam diameter of the object light and the maximum size of the reference light. Another factor was that the distance between the address detector and the holographic recording medium could be shortened without reducing the beam diameter or increasing the angle modulation interval.
- a laser beam from a laser light source is split into an object beam and a reference beam, the object beam is intensity-modulated according to information to be recorded, and the reference beam modulates an incident angle.
- Medium A holographic recording method for irradiating a body with interference fringes, wherein the beam shape of the reference light has a minor axis in a plane including an incident optical axis of the reference light at each incident angle; and Holographic recording method, characterized in that the holographic recording medium has an elongated shape having a major axis in a plane perpendicular to the plane.
- a laser light source a beam splitter that splits laser light emitted from the laser light source into object light and reference light, and an object that guides the object light split by the beam splitter to a holographic recording medium
- An optical system, and an angle modulator that modulates the incident angle of the reference light whose beam shape is elongated by the beam shaping optical system and guides the reference light to the holographic recording medium in this order.
- the object optical system includes, from the beam splitter side, a spatial light modulator that modulates the intensity of the object light in accordance with information to be recorded, and a Fourier lens in this order.
- a spatial light modulator that modulates the intensity of the object light in accordance with information to be recorded
- a Fourier lens in this order.
- the beam shaping optical system the short diameter of the elongated-shaped, the angle modulator holographic recording apparatus characterized in that it is configured to match the angle multiplexing direction by.
- the beam shaping optical system includes at least one cylindrical lens for reducing a beam shape of the reference light in the minor axis direction. apparatus.
- Holography in which information is angularly multiplex-recorded by interference fringes between object light and reference light
- one unit of the recording is elongated when viewed from one of the incident directions of the object light and the reference light, and the minor axis of the elongated is angularly multiplexed.
- a plurality of diffracted lights are generated on an extension of the optical axis of the reference light passing through the holographic recording medium, and the diffracted light is generated by the holographic recording medium power.
- the beam spot on the extension line passing through the holographic recording medium at each incident angle of the reference light is adjacent with a gap on the light receiving surface.
- the incident angle of the reference beam corresponding to the beam spot having the highest light intensity among the plurality of beam spots received by the dress detector is used as the address of the search data, and the address of the search laser beam is obtained by this address.
- the hologram is characterized in that information is reproduced by receiving, with a two-dimensional photodetector, a diffracted light of the reproduction light irradiated along the optical axis of the reference light on an extension of the axis passing through the holographic recording medium.
- Graphic memory playback method
- a holographic recording area in which information is angularly multiplex-recorded by interference fringes between the object light and the reference light, wherein one unit of the holographic recording area is the object light.
- a holographic memory for reproducing information recorded on a holographic recording medium having an elongated shape as viewed from one of the incident directions of the reference light and having the minor axis of the elongated shape coincident with the angle multiplexing direction.
- a reproducing apparatus for irradiating the holographic recording medium with reproducing light along the same optical axis as the reference light; and the holographic optical system along the same optical axis as the object light.
- a search optical system for irradiating a recording medium with search light an address detector disposed on an extension of the optical axis of the reference light through the holographic recording medium, and the hologram of the optical axis of the search light. It comprises a two-dimensional photodetector to the Ikku recording medium disposed on the extension was Tsutsu, wherein the address detector, The distance of the holographic recording medium is set so that the beam spot on the extension line passing through the holographic recording medium at each incident angle of the reference light is adjacent to each other with a gap on the light receiving surface.
- a holographic memory playback device is provided.
- the reproduction optical system emits reproduction light from a plurality of light emitting point positions having the same incident light intensity as the incident angle of the reference light on the holographic recording medium during the recording.
- An address detector arranged on an extension of the optical axis of the reference light through the holographic recording medium, and the address detector is provided with the holographic recording medium. (11), wherein a distance from the reference beam is set such that a beam spot on an extension line passing through the holographic recording medium at each incident angle of the reference light is adjacent to the light receiving surface with a gap. 2.
- the holographic memory reproducing device according to 1.
- a laser light source a beam splitter that splits the laser light emitted from the laser light source into object light and reference light, and an object that guides the object light split by the beam splitter to a holographic recording medium
- An optical system a reference optical system for guiding the reference light to the holographic recording medium, an address detector disposed on an extension of the optical axis of the reference light through the holographic recording medium, and the object light
- a two-dimensional photodetector arranged on an extension of the optical axis of the holographic recording medium through the holographic recording medium.
- the reference optical system is configured to change the beam shape of the reference light from the beam splitter side.
- a beam shaping optical system for forming an elongated shape; and a reference beam having a beam shape elongated by the beam shaping optical system.
- a spatial light modulator that intensity-modulates the reference light according to information to be recorded from the beam splitter side, and a Fourier lens.
- the beam shaping optical system is configured so that the minor axis of the elongated shape coincides with the angle multiplexing direction by the angle modulation device, and the address detector includes the hologram.
- the distance of the graphic recording medium force is set so that the beam spot on the extension line passing through the holographic recording medium at each incident angle of the reference light is adjacent to the light receiving surface with a gap.
- a holographic recording and playback device (14) The holographic recording / reproducing apparatus according to (13), wherein a long diameter force of the elongated shape of the reference light coincides with an outer diameter of the beam shape of the object light.
- the beam shaping optical system includes at least one cylindrical lens that reduces the beam shape of the reference light in the minor diameter direction (13), (14), or The holographic recording / reproducing device according to (15).
- a holographic recording medium having a holographic recording area in which information is angularly multiplex-recorded by interference fringes between the object light and the reference light, wherein the holographic recording area has one of the holographic recording areas.
- a holographic recording medium wherein a unit is elongated when viewed from one of the incident directions of the object light and the reference light, and a minor axis of the elongated shape coincides with an angle multiplexing direction.
- FIG. 1 is an optical system diagram showing a holographic recording / reproducing apparatus according to Embodiment 1 of the present invention.
- FIG. 2 A schematic diagram showing a relationship between a reference beam and an object beam in the holographic recording / reproducing apparatus on a holographic recording medium.
- FIG. 3 is a plan view schematically showing an optical path of a reference light in the holographic recording / reproducing apparatus, and a beam spot of the reference light on an address detector and its light receiving surface.
- FIG. 4 is a plan view schematically showing another beam shape of the reference light used in the present invention.
- FIG. 5 In Example 1, the beam diameter of the reference light applied to the holographic recording medium was changed to two adjacent beams. Cross-sectional view geometrically showing the correlation between the modulation angle between the reference beams to be measured and the distance between the address detector and the holographic recording medium.
- FIG. 6 A diagram showing the relationship between the diameter of a laser beam during recording, the modulation angle interval of a reference beam, and the distance between a holographic recording medium and an address detector.
- FIG. 7 is an optical system diagram showing a holographic memory reproducing device according to a second embodiment of the present invention.
- the reference optical system in the holographic recording / reproducing apparatus is provided with a beam shaping optical system that makes the beam shape of the reference light elliptical.
- the distance between the address detector and the holographic recording medium is set such that the beam spot of the reference beam on the light receiving surface does not overlap with the adjacent beam spot.
- the holographic recording / reproducing apparatus 10 includes a laser light source 12 and a beam expander for expanding the beam diameter of the laser light emitted from the laser light source 12. 14, a beam splitter 16 that branches the laser beam whose beam diameter has been expanded by the beam expander 14 into transmitted light and reflected light, and a transmitted light of the beam splitter 16 as reference light, which is used as a reference light in the holographic recording medium 20.
- an address detector 28 disposed on an extension of the optical axis of the reference light passing through the holographic recording medium 20. .
- the reference optical system 22 includes a beam shaping optical system 30 and an angle modulator 32 in this order from the beam splitter 16 side.
- the object optical system 24 is provided with a spatial light modulator 34 and a Fourier lens 36 in this order from the beam splitter 16 side.
- the imaging optical system 26 includes a two-dimensional photodetector 38 including an image sensor, and an imaging lens 40 disposed between the two-dimensional photodetector 38 and the holographic recording medium 20. It is configured with.
- the beam shaping optical system 30 is configured so that, for example, as shown in FIG. 2B, a reference beam having a circular beam shape becomes an elliptical shape indicated by reference numeral 42.
- the beam shaping optical system 30 includes two lenses that function as convex lenses in the X-axis direction in FIG. Are composed of cylindrical lenses 30A and 30B.
- the optical axis of the light transmitted through the beam splitter 16 is the Z axis
- the direction orthogonal to the Z axis and the paper surface is the Y axis
- the direction orthogonal to the Y axis is the X axis.
- the cylindrical lens 30A is disposed closer to the beam splitter 16 than the cylindrical lens 30B, has a focal length longer than that of the cylindrical lens 30B, and the cylindrical lens 30B converts the beam converged by the cylindrical lens 30A. Therefore, the reference beam is changed to a parallel beam having an elliptical beam shape because the beam diameter in the Y direction does not change and the beam diameter in the X direction decreases in FIG. The light is incident on the angle modulation device 32.
- the angle modulation device 32 is similar to the one conventionally used, and slides on the optical axis of the reference light and reflects the incident reference light in the direction of the holographic recording medium 20. In addition, a mirror 32A that is rotated according to the slide position is provided.
- the spatial light modulator 34 in the object optical system 24 modulates the amplitude of the object light according to the information to be recorded.
- the object light amplitude-modulated by the spatial light modulator 34 passes through the Fourier lens 36. Accordingly, the holographic recording medium 20 is irradiated to a position overlapping with the reference light.
- the imaging optical system 26 When the holographic recording medium 20 is irradiated with a reproducing laser beam (reproducing light) from the same direction as the reference light of the reference optical system 22, the imaging optical system 26 generates the diffracted light. Is located in the position.
- the address detector 28 is constituted by an image sensor or an array of two-dimensional light detectors 28 ⁇ , 28 ⁇ ,...
- the distance from 0 is set such that the beam spot 27 on the extension line passing through the holographic recording medium 20 at each incident angle of the reference light is adjacent to the light receiving surface 29 with a gap 29A.
- the laser light emitted from the laser light source 12 has its beam diameter expanded by a beam expander 14, and the laser light transmitted through the beam splitter 16 is used as reference light as a reference optical system.
- the reflected light enters the object optical system 24 as object light.
- the reference light is contracted in the X-axis direction in FIG. 1 by the two cylindrical lenses 30A and 30B, and has an elliptical beam shape as indicated by reference numeral 42 in FIG. It is said.
- the reference light having an elliptical beam shape is reflected by the mirror 32A in the angle modulation device 32, and the holographic recording medium 20 is irradiated with the reflection angle, that is, the incident angle, modulated.
- the object light is amplitude-modulated in the spatial light modulator 34 according to the information to be recorded, and then is applied to the holographic recording medium 20 via the Fourier lens 36.
- the state of the object beam Ob irradiated on the holographic recording medium 20 is as shown in FIG. 2 (A), and the beam shape is circular as shown in FIG. 2 (B). It becomes.
- the reference light Re having the elliptical beam shape is irradiated so as to overlap the object light of the circle 41, and the interference between the object light and the reference light within the ellipse indicated by reference numeral 42 in FIG. Streaks are formed.
- this ellipse 42 is one unit of holographic recording.
- the holographic recording medium 20 When reproducing information recorded on the holographic recording medium 20, all the pixels of the spatial light modulator 34 are turned off (in a state where light is not transmitted), and the reference optical system 24 is set to a reproduction optical system.
- the holographic recording medium 20 is irradiated with a reproducing laser beam.
- the angle of incidence of the reproduction laser beam is controlled by the angle modulation device 32 according to the address of the information (data page) to be reproduced.
- diffracted light corresponding to the object light at the time of recording is generated, and this is imaged on the two-dimensional photodetector 38 by the imaging lens 40.
- the object optical system 24 is used as a search optical system. That is, in the spatial light modulator 34, search data is added to search light corresponding to object light, and the search light is applied to the holographic recording medium 20. As a result, in the holographic recording medium 20, diffracted light is generated in the same angle direction as the reference light at the time of recording, and is received by the address detector 28.
- the same number of diffracted lights as the number of modulation steps of the incident angle of the reference light at the time of recording enter the address detector 28. Since the amount of detected light of the diffracted light that matches the search data given by the spatial light modulator 34 is maximized, this is recognized as the address (incident angle) of the search data from among the plurality of diffracted lights. You.
- the reproduction light is set to the detected address (incident angle), and the search data is reproduced by the normal reproduction described above, thereby completing the data search.
- the number of light beams equal to the number of modulation steps of the reference light at the time of recording is incident on the address detector 28 as described above, and the beam shape is indicated by reference numeral 42 in FIG. 2 (B). As shown in Fig. 3, it can be set more densely in the direction of the minor axis of the ellipse than in the case of a circle, as shown in Fig. 3.
- the beam shaping optical system 30 is for making a reference beam having a circular beam into an elliptical shape.
- the shape may be an elongated shape including a circle or a rectangle.
- Fig. 4 (A) an oval having a higher flattening ratio than an ellipse may be used, and the upper and lower ends of the reference light in the Y direction in Fig. 1 may be masked in advance to form a straight line.
- And may be substantially rectangular as shown in FIG. 4 (B).
- FIG. 5 shows a geometric state when adjacent light beams on the light receiving surface of the address detector 28 are separated and detected.
- the design of the holographic recording medium or the optical system it is possible to control the various parameters in Fig. 5 above.
- the recording capacity of the holographic recording medium is changed.
- the beam diameter D in Figs. 5 and 6 can be substantially reduced in accordance with the flattening rate of the ellipse.
- the beam diameter D in FIGS. 5 and 6 can be made substantially 1 Z2 without reducing the amount of defocus of the object light.
- the ratio of the minor axis to the major axis in the elongated shape is desirably 2: 3—3: 8.
- the second embodiment shown in FIG. 7 is for reproducing the information of the holographic recording medium 20 angle-multiplex-recorded by the holographic recording / reproducing apparatus 10 or the like using the elongated beam-shaped reference light. Is a playback-only device.
- the holographic memory reproducing device 50 includes a data search optical system 52 used only for data search, a reproduction light source 54 for forming reproduction light, and holographic recording of reproduction light from the reproduction light source 54. And an imaging optical system 56 for reproducing information on diffracted light power generated by irradiation on the medium 20.
- the data search optical system 52 includes a laser light source 52 A, and a search spatial light modulator for providing search information to the laser light emitted from the laser light source 52 A toward the holographic recording medium 20.
- the laser light from the modulator 52B, the Fresnel lens 52C, and the laser light source 52A is holographically filtered through the search spatial light modulator 52B and the Fresnel lens 52C.
- an address detector 58 for receiving the diffracted light generated in the holographic recording medium 20 when the recording medium 20 is irradiated.
- the reproduction light source 54 is constituted by a laser array having the same number of light emitting points as the number of modulation stages corresponding to the angle modulation interval at the time of angle multiplex recording on the holographic recording medium 20. I have.
- a surface emitting laser or a light emitting diode may be used in addition to the laser array.
- the imaging optical system 56 is a two-dimensional light detector for receiving, via an imaging lens 56B, diffracted light generated in the holographic recording medium 20 by irradiation of the reproduction light from the reproduction light source 54. It is composed of the container 56A.
- the address detector 58 has the same configuration as that of the address detector 28 in the holographic recording / reproducing device 10.
- the laser light from the laser light source 52A corresponds to the data to be searched by the search spatial light modulator 52B.
- the holographic recording medium 20 is modulated and irradiated with the holographic recording medium 20 via the Fresnel lens 52C.
- the same number of diffracted light beams as the number of angle modulation stages at the time of recording are generated from the holographic recording medium 20, and are received by the address detector 58.
- the signal with the highest output indicates the address of the desired data.
- the search spatial light modulator 52B since the search spatial light modulator 52B is used only for data search, it does not require a higher image quality than the spatial light modulator used at the time of recording. Therefore, the entire apparatus can be configured to be small and inexpensive.
- the first embodiment relates to a holographic recording / reproducing device
- the second embodiment relates to a holographic memory reproducing device for reproduction only.
- the present invention is not limited to these. It is also applied to only the recording device of the holographic recording / reproducing device.
- the beam spot of the diffracted light on the address detector at the time of search is By shortening the length of the pot in the angle modulation direction, the distance of the address detector to the holographic recording medium can be shortened, and the address detector can be downsized.
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- Optical Recording Or Reproduction (AREA)
Abstract
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/577,650 US7532373B2 (en) | 2003-11-12 | 2004-10-27 | Holographic recording method, holographic recording apparatus, holographic memory reproducing method, holographic memory reproducing apparatus, holographic recording and reproducing apparatus, and holographic recording medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-383174 | 2003-11-12 | ||
JP2003383174A JP4347667B2 (ja) | 2003-11-12 | 2003-11-12 | 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 |
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WO2005047987A1 true WO2005047987A1 (ja) | 2005-05-26 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006132198A1 (ja) * | 2005-06-09 | 2006-12-14 | Alps Electric Co., Ltd. | ホログラム型再生装置 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7852538B2 (en) | 2004-07-07 | 2010-12-14 | Sony Corporation | Hologram recording apparatus and hologram recording method |
JP4821216B2 (ja) * | 2005-08-30 | 2011-11-24 | パルステック工業株式会社 | ホログラム再生方法 |
JP4506738B2 (ja) * | 2005-10-06 | 2010-07-21 | ソニー株式会社 | ホログラムシート |
DE602006013353D1 (de) * | 2006-02-14 | 2010-05-12 | Fujitsu Ltd | Hologramm-rekorder |
WO2008001416A1 (fr) * | 2006-06-26 | 2008-01-03 | Fujitsu Limited | Dispositif d'enregistrement d'hologramme et procédé d'enregistrement/reproduction d'hologramme |
WO2008001434A1 (fr) * | 2006-06-28 | 2008-01-03 | Fujitsu Limited | Dispositif et procédé d'enregistrement d'hologramme |
KR101336248B1 (ko) * | 2007-02-22 | 2013-12-03 | 삼성전자주식회사 | 홀로그래픽 저장 매체에의 데이터 기록 장치 및 방법 |
JP4933984B2 (ja) * | 2007-08-24 | 2012-05-16 | パイオニア株式会社 | ホログラム記録再生装置 |
WO2009051775A1 (en) * | 2007-10-18 | 2009-04-23 | Stx Aprilis, Inc. | Optical system and method for content addressable search and information retrieval in a holographic data storage system |
WO2009051774A1 (en) * | 2007-10-18 | 2009-04-23 | Stx Aprilis, Inc. | Holographic content search engine for rapid information retrieval |
WO2009075024A1 (ja) | 2007-12-11 | 2009-06-18 | Fujitsu Limited | ホログラム記録装置 |
JP2011187101A (ja) * | 2010-03-05 | 2011-09-22 | Hitachi Consumer Electronics Co Ltd | 光情報記録再生装置、及び光情報再生方法 |
JP5320343B2 (ja) * | 2010-06-04 | 2013-10-23 | 日立コンシューマエレクトロニクス株式会社 | 光情報記録再生装置及び光情報記録再生方法 |
US8803026B2 (en) * | 2010-10-15 | 2014-08-12 | Mitsubishi Electric Corporation | Laser machining device and bellows device |
JP6009265B2 (ja) * | 2012-08-06 | 2016-10-19 | 日立コンシューマエレクトロニクス株式会社 | ホログラム用光ピックアップ装置及びそれを備えた光情報記録再生装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11311937A (ja) * | 1998-02-27 | 1999-11-09 | Hideyoshi Horigome | 光情報記録装置および方法ならびに光情報再生装置および方法 |
Family Cites Families (4)
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US7130092B1 (en) | 1998-02-27 | 2006-10-31 | Optware Corporation | Apparatus and method for recording and reproducing optical information |
US6721076B2 (en) * | 2001-08-03 | 2004-04-13 | Inphase Technologies, Inc. | System and method for reflective holographic storage with associated multiplexing techniques |
US6798547B2 (en) * | 2001-10-09 | 2004-09-28 | Inphase Technologies, Inc. | Process for holographic multiplexing |
WO2003049090A1 (en) * | 2001-12-07 | 2003-06-12 | Discovision Associates | Method and apparatus for diffractive information storage |
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2003
- 2003-11-12 JP JP2003383174A patent/JP4347667B2/ja not_active Expired - Fee Related
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2004
- 2004-10-27 US US10/577,650 patent/US7532373B2/en not_active Expired - Fee Related
- 2004-10-27 WO PCT/JP2004/015919 patent/WO2005047987A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11311937A (ja) * | 1998-02-27 | 1999-11-09 | Hideyoshi Horigome | 光情報記録装置および方法ならびに光情報再生装置および方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006132198A1 (ja) * | 2005-06-09 | 2006-12-14 | Alps Electric Co., Ltd. | ホログラム型再生装置 |
JP2006343567A (ja) * | 2005-06-09 | 2006-12-21 | Alps Electric Co Ltd | ホログラム型再生装置 |
JP4599234B2 (ja) * | 2005-06-09 | 2010-12-15 | アルプス電気株式会社 | ホログラム型再生装置 |
Also Published As
Publication number | Publication date |
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US20070081206A1 (en) | 2007-04-12 |
JP2005148242A (ja) | 2005-06-09 |
US7532373B2 (en) | 2009-05-12 |
JP4347667B2 (ja) | 2009-10-21 |
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