GB1362240A - Optical data recording systems - Google Patents

Optical data recording systems

Info

Publication number
GB1362240A
GB1362240A GB3828071A GB3828071A GB1362240A GB 1362240 A GB1362240 A GB 1362240A GB 3828071 A GB3828071 A GB 3828071A GB 3828071 A GB3828071 A GB 3828071A GB 1362240 A GB1362240 A GB 1362240A
Authority
GB
United Kingdom
Prior art keywords
mirror
data
light
point
carrier
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
GB3828071A
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1362240A publication Critical patent/GB1362240A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Holo Graphy (AREA)

Abstract

1362240 Optical data recording SIEMENS A G 16 Aug 1971 [24 Aug 1970] 38280/71 Heading G2J Data is photographically recorded as a plurality of individual point images at selected points on a data carrier by operating a light deflector to direct a data carrying light beam to said selected points. The data is preferably binary in character a digital "1" being reposted as an image of a point light source. A laser beam 4 is focused on to a pin hole in a diaphragm 2. Light from the point source is then reflected from a plane mirror 1 rotatably mounted about two orthogonal axes. Thus for each of positions I, II, III light from an apparent source a, b, c is directed to a position on a record carrier 5 selected by a movable mask 7. There it interferes with a reference beam 6 to form a hologram. The mask 7 can be omitted. In such an embodiment the mirror 1 is located at 2f from a lens 8 which selectively images the point sources on the hologram record carrier 5, also located 2f from lens 8. In a further embodiment both mirror 1 and carrier 5 are respectively located at the principal force of an elliptical mirror. Two mirrors may be used, or one or two polygonal mirror drums, mounted for rotation about orthogonal axes. Alternatively acousto-optic or electro-optic deflectors may be used.
GB3828071A 1970-08-24 1971-08-16 Optical data recording systems Expired GB1362240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702041922 DE2041922A1 (en) 1970-08-24 1970-08-24 Process for the production of light point grids for the purpose of storing data

Publications (1)

Publication Number Publication Date
GB1362240A true GB1362240A (en) 1974-07-30

Family

ID=5780572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3828071A Expired GB1362240A (en) 1970-08-24 1971-08-16 Optical data recording systems

Country Status (6)

Country Link
BE (1) BE771353A (en)
DE (1) DE2041922A1 (en)
FR (1) FR2104599A5 (en)
GB (1) GB1362240A (en)
LU (1) LU63762A1 (en)
NL (1) NL7111453A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345553A (en) * 1998-12-31 2000-07-12 Daewoo Electronics Co Ltd Holographic storage system with reference beam deflector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821265B2 (en) * 1974-10-18 1983-04-28 富士写真フイルム株式会社 Hologram lens
FR2455298A1 (en) * 1979-04-23 1980-11-21 Thomson Csf ILLUMINATOR DEVICE FOR PROVIDING A DIVERGING ILLUMINATION BEAM FROM A PREDETERMINED AREA OF A PLAN AND PATTERN TRANSFER SYSTEM COMPRISING SUCH A DEVICE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345553A (en) * 1998-12-31 2000-07-12 Daewoo Electronics Co Ltd Holographic storage system with reference beam deflector
US6157473A (en) * 1998-12-31 2000-12-05 Daewoo Electronics Co., Ltd. Holographic storage system incorporated therein a parabolic mirror
GB2345553B (en) * 1998-12-31 2002-12-31 Daewoo Electronics Co Ltd Holographic storage system with reference beam deflector

Also Published As

Publication number Publication date
LU63762A1 (en) 1972-01-05
BE771353A (en) 1971-12-31
DE2041922A1 (en) 1972-03-09
NL7111453A (en) 1972-02-28
FR2104599A5 (en) 1972-04-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees