GB1436896A - Holographic data-recording systems - Google Patents

Holographic data-recording systems

Info

Publication number
GB1436896A
GB1436896A GB2346073A GB2346073A GB1436896A GB 1436896 A GB1436896 A GB 1436896A GB 2346073 A GB2346073 A GB 2346073A GB 2346073 A GB2346073 A GB 2346073A GB 1436896 A GB1436896 A GB 1436896A
Authority
GB
United Kingdom
Prior art keywords
recording systems
holographic data
focus
hologram
stigmatic
Prior art date
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
GB2346073A
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.)
Siemens AG
Original Assignee
Siemens AG
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 DE2224386A external-priority patent/DE2224386C2/en
Priority claimed from DE19732316120 external-priority patent/DE2316120C2/en
Priority claimed from DE19732316119 external-priority patent/DE2316119C2/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1436896A publication Critical patent/GB1436896A/en
Expired 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

1436896 Non-axial hologram SIEMENS AG 17 May 1973 [18 May 1972 30 March 1973 (2)] 23460/73 Heading G2J A reference beam and an object beam, either one of which converges to a focus 3, the other diverging from a focus 2, has the two foci in minor symmetrical manner respective to the plane of the hologram 1. The two beams are preferably stigmatic.
GB2346073A 1972-05-18 1973-05-17 Holographic data-recording systems Expired GB1436896A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2224386A DE2224386C2 (en) 1972-05-18 1972-05-18 Method for the holographic recording of information in the form of electrical signals
DE19732316120 DE2316120C2 (en) 1972-05-18 1973-03-30 Method for the holographic recording of information in the form of electrical signals
DE19732316119 DE2316119C2 (en) 1972-05-18 1973-03-30 Method for the holographic recording of information in the form of electrical signals

Publications (1)

Publication Number Publication Date
GB1436896A true GB1436896A (en) 1976-05-26

Family

ID=27184425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2346073A Expired GB1436896A (en) 1972-05-18 1973-05-17 Holographic data-recording systems

Country Status (6)

Country Link
JP (1) JPS5824793B2 (en)
BE (1) BE799757A (en)
FR (1) FR2184841B1 (en)
GB (1) GB1436896A (en)
IT (1) IT987670B (en)
NL (1) NL177634C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163566A (en) * 1979-06-05 1980-12-19 Sony Corp Hologram lens and its production and optical system signal using this hologram lens

Also Published As

Publication number Publication date
NL7307007A (en) 1973-11-20
JPS5824793B2 (en) 1983-05-23
FR2184841B1 (en) 1977-02-11
NL177634C (en) 1985-10-16
IT987670B (en) 1975-03-20
BE799757A (en) 1973-09-17
NL177634B (en) 1985-05-17
FR2184841A1 (en) 1973-12-28
JPS4951968A (en) 1974-05-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee