GB1399290A - Redundancy means for redundant hologrm recording system - Google Patents

Redundancy means for redundant hologrm recording system

Info

Publication number
GB1399290A
GB1399290A GB5665472A GB5665472A GB1399290A GB 1399290 A GB1399290 A GB 1399290A GB 5665472 A GB5665472 A GB 5665472A GB 5665472 A GB5665472 A GB 5665472A GB 1399290 A GB1399290 A GB 1399290A
Authority
GB
United Kingdom
Prior art keywords
pin
redundant
hologrm
recording system
array
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
GB5665472A
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.)
RCA Corp
Original Assignee
RCA 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
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1399290A publication Critical patent/GB1399290A/en
Expired legal-status Critical Current

Links

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
    • G03H1/32—Systems for obtaining speckle elimination

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)

Abstract

1399290 Redundant hologram R C A CORPORATION 8 Dec 1972 [9 Dec 1971] 56654/72 Heading G2J A pin-hole array 202 used to form a redundant information beam for a hologram is associated with a Fresnel lens array 200 in which the spacing and effective size of the individual Fresnel lenses and the pin-holes are matched such that the pin-hole acts as a spacial filter to pass only zero-order lens energy. The Fresnel lens array is first fabricated and used to photo-form the pin-hole array on a light-sensitive emulsion or photo-resist.
GB5665472A 1971-12-09 1972-12-08 Redundancy means for redundant hologrm recording system Expired GB1399290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20643571A 1971-12-09 1971-12-09

Publications (1)

Publication Number Publication Date
GB1399290A true GB1399290A (en) 1975-07-02

Family

ID=22766370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5665472A Expired GB1399290A (en) 1971-12-09 1972-12-08 Redundancy means for redundant hologrm recording system

Country Status (13)

Country Link
JP (1) JPS5117916B2 (en)
AT (1) ATA1047272A (en)
AU (1) AU469980B2 (en)
BE (1) BE792524A (en)
BR (1) BR7208531D0 (en)
CA (1) CA979260A (en)
DE (1) DE2259728A1 (en)
ES (1) ES409223A1 (en)
FR (1) FR2165924B1 (en)
GB (1) GB1399290A (en)
IT (1) IT970903B (en)
NL (1) NL7216412A (en)
SE (1) SE376667B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843084A (en) * 1981-09-07 1983-03-12 オムロン株式会社 Coin processor
JPS5843085A (en) * 1981-09-07 1983-03-12 オムロン株式会社 Coin processor
JPS58167257U (en) * 1982-05-04 1983-11-08 日産自動車株式会社 Vehicle loading device
JPS59104850U (en) * 1982-12-30 1984-07-14 日本発条株式会社 Car luggage compartment cover device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3545854A (en) * 1966-06-17 1970-12-08 Gen Electric Semiconductor mask making

Also Published As

Publication number Publication date
FR2165924B1 (en) 1976-06-04
AU469980B2 (en) 1976-02-26
BR7208531D0 (en) 1973-09-25
BE792524A (en) 1973-03-30
CA979260A (en) 1975-12-09
ATA1047272A (en) 1977-03-15
JPS5117916B2 (en) 1976-06-05
DE2259728A1 (en) 1973-06-14
IT970903B (en) 1974-04-20
JPS4866450A (en) 1973-09-12
SE376667B (en) 1975-06-02
AU4960772A (en) 1974-06-06
NL7216412A (en) 1973-06-13
ES409223A1 (en) 1975-12-16
FR2165924A1 (en) 1973-08-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee