FR2284889B1 - - Google Patents

Info

Publication number
FR2284889B1
FR2284889B1 FR7528149A FR7528149A FR2284889B1 FR 2284889 B1 FR2284889 B1 FR 2284889B1 FR 7528149 A FR7528149 A FR 7528149A FR 7528149 A FR7528149 A FR 7528149A FR 2284889 B1 FR2284889 B1 FR 2284889B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7528149A
Other versions
FR2284889A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP10550074A external-priority patent/JPS5132647A/ja
Priority claimed from JP11800974A external-priority patent/JPS5144935A/ja
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of FR2284889A1 publication Critical patent/FR2284889A1/fr
Application granted granted Critical
Publication of FR2284889B1 publication Critical patent/FR2284889B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/042—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern
    • 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
    • G03H1/16—Processes or apparatus for producing holograms using Fourier transform
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00—Optical components
    • G03H2223/13—Phase mask

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
FR7528149A 1974-09-14 1975-09-12 Dephaseur pour enregistrement par hologramme Granted FR2284889A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10550074A JPS5132647A (en) 1974-09-14 1974-09-14 Horoguramukirokuyo no nichiisoban
JP11800974A JPS5144935A (ja) 1974-10-16 1974-10-16 Horoguramukirokuyono isoban

Publications (2)

Publication Number Publication Date
FR2284889A1 FR2284889A1 (fr) 1976-04-09
FR2284889B1 true FR2284889B1 (fr) 1979-03-23

Family

ID=26445774

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7528149A Granted FR2284889A1 (fr) 1974-09-14 1975-09-12 Dephaseur pour enregistrement par hologramme

Country Status (2)

Country Link
US (1) US4143937A (fr)
FR (1) FR2284889A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410237A (en) * 1980-09-26 1983-10-18 Massachusetts Institute Of Technology Method and apparatus for shaping electromagnetic beams
US5510912A (en) * 1993-08-09 1996-04-23 International Business Machines Corporation Method and apparatus for modulation of multi-dimensional data in holographic storage
US5627664A (en) * 1994-06-29 1997-05-06 Tamarack Storage Devices, Inc. Holographic storage with combined orthogonal phase codes and random phase codes
US5940514A (en) * 1996-04-30 1999-08-17 The Board Of Trustees Of The Leland Stanford Junior University Encrypted holographic data storage based on orthogonal phase code multiplexing
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
US6281993B1 (en) 1998-03-30 2001-08-28 International Business Machines Corporation Phase shifting element for optical information processing storing systems
JP3413138B2 (ja) * 1998-11-06 2003-06-03 キヤノン株式会社 位相型計算機ホログラムの製造方法
DE19938723A1 (de) * 1999-08-16 2001-02-22 Busch Dieter & Co Prueftech Verfahren zur Signalanalyse
US6975458B1 (en) 2001-07-13 2005-12-13 Kurt Kanzler Method and apparatus for transformation of a gaussian laser beam to a far field diffraction pattern
US7813017B2 (en) * 2005-10-21 2010-10-12 Inphase Technologies, Inc. Method and system for increasing holographic data storage capacity using irradiance-tailoring element
US20070223554A1 (en) * 2006-03-09 2007-09-27 Inphase Technologies, Inc. External cavity laser
EP1873764A1 (fr) * 2006-06-30 2008-01-02 Bayer Innovation Gmbh Procédé et système de décodage optique parallèle de l'image de la phase numérique pour intensifier l'image
FR2950986A1 (fr) * 2009-10-05 2011-04-08 Commissariat Energie Atomique Superposition d'une image visible et d'un hologramme synthetique
AT525445B1 (de) 2021-10-08 2023-04-15 Stefan Hohla Vorrichtung zum Leiten von elektrischer Energie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604778A (en) * 1969-10-22 1971-09-14 Bell Telephone Labor Inc Fourier transform recording with random phase shifting
US3883232A (en) * 1973-12-03 1975-05-13 Hitachi Ltd Random phase plate and optical system incorporating said plate
GB1523165A (en) * 1974-08-03 1978-08-31 Matsushita Electric Ind Co Ltd Fourier-transform holography by pseudo-random phase shifting

Also Published As

Publication number Publication date
DE2540800B2 (de) 1977-02-17
FR2284889A1 (fr) 1976-04-09
US4143937A (en) 1979-03-13
DE2540800A1 (de) 1976-04-01

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse