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GB1409731A - Suppressing coherent optical noise - Google Patents

Suppressing coherent optical noise

Info

Publication number
GB1409731A
GB1409731A GB1267472A GB1267472A GB1409731A GB 1409731 A GB1409731 A GB 1409731A GB 1267472 A GB1267472 A GB 1267472A GB 1267472 A GB1267472 A GB 1267472A GB 1409731 A GB1409731 A GB 1409731A
Authority
GB
United Kingdom
Prior art keywords
optical noise
filter
coherent optical
march
suppressing coherent
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
GB1267472A
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB1267472A priority Critical patent/GB1409731A/en
Publication of GB1409731A publication Critical patent/GB1409731A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48—Laser speckle optics
    • 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)
  • Optics & Photonics (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

1409731 Reducing optical noise UNITED KINGDOM ATOMIC ENERGY AUTHORITY 29 March 1973 [17 March 1972] 12674/72 Heading G2J An optical system incorporating a spacial filter 6 in a transport plane and two collimating and focusing lenses 4, 7, and illuminated by a laser 2 is intended to spacially filter a transparency 8. To reduce optical noise due to the coherent source either one of the lens and the spatial filter are oscillated such that the system is always in register.
GB1267472A 1972-03-17 1972-03-17 Suppressing coherent optical noise Expired GB1409731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1267472A GB1409731A (en) 1972-03-17 1972-03-17 Suppressing coherent optical noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1267472A GB1409731A (en) 1972-03-17 1972-03-17 Suppressing coherent optical noise

Publications (1)

Publication Number Publication Date
GB1409731A true GB1409731A (en) 1975-10-15

Family

ID=10009052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1267472A Expired GB1409731A (en) 1972-03-17 1972-03-17 Suppressing coherent optical noise

Country Status (1)

Country Link
GB (1) GB1409731A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538413A1 (en) * 1984-12-29 1986-07-03 Jenoptik Jena Gmbh, Ddr 6900 Jena ARRANGEMENT FOR EVALUATING TWO-DIMENSIONAL OBJECT TEMPLATES
DE3810639A1 (en) * 1987-07-17 1989-01-26 Jenoptik Jena Gmbh MICROSCOPE ARRANGEMENT FOR PARALLEL VISUAL AND OPTOELECTRONIC ANALYSIS
EP1040388A2 (en) * 1997-12-15 2000-10-04 Northrop Grumman Corporation Scatter noise reduction in holographic storage systems by speckle averaging

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538413A1 (en) * 1984-12-29 1986-07-03 Jenoptik Jena Gmbh, Ddr 6900 Jena ARRANGEMENT FOR EVALUATING TWO-DIMENSIONAL OBJECT TEMPLATES
DE3810639A1 (en) * 1987-07-17 1989-01-26 Jenoptik Jena Gmbh MICROSCOPE ARRANGEMENT FOR PARALLEL VISUAL AND OPTOELECTRONIC ANALYSIS
EP1040388A2 (en) * 1997-12-15 2000-10-04 Northrop Grumman Corporation Scatter noise reduction in holographic storage systems by speckle averaging
EP1040388A4 (en) * 1997-12-15 2006-08-23 Northrop Grumman Corp Scatter noise reduction in holographic storage systems by speckle averaging

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Legal Events

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