GB1384281A - Formation of photographic records - Google Patents

Formation of photographic records

Info

Publication number
GB1384281A
GB1384281A GB1227272A GB1227272A GB1384281A GB 1384281 A GB1384281 A GB 1384281A GB 1227272 A GB1227272 A GB 1227272A GB 1227272 A GB1227272 A GB 1227272A GB 1384281 A GB1384281 A GB 1384281A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
formation
diffraction gratings
photographic records
light
coherence
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
GB1227272A
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 Department of Trade and Industry
Original Assignee
UK Department of Trade and Industry
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

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/34Systems for reducing the space-spatial bandwidth product

Abstract

1384281 Diffraction gratings TRADE & INDUSTRY SECRETARY OF STATE FOR 10 May 1973 [16 March 1972] 12272/72 Heading G2J In forming diffraction gratings by interferometric methods, the original beam of coherent light from which the two interfering beams are produced in known manner, is passed through a rotating diffuser. By thus modifying the coherence of the light the effects of dust and optical aberrations is minimized.
GB1227272A 1972-03-16 1972-03-16 Formation of photographic records Expired GB1384281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1227272A GB1384281A (en) 1972-03-16 1972-03-16 Formation of photographic records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1227272A GB1384281A (en) 1972-03-16 1972-03-16 Formation of photographic records

Publications (1)

Publication Number Publication Date
GB1384281A true true GB1384281A (en) 1975-02-19

Family

ID=10001512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227272A Expired GB1384281A (en) 1972-03-16 1972-03-16 Formation of photographic records

Country Status (1)

Country Link
GB (1) GB1384281A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148549A (en) * 1975-12-08 1979-04-10 The Rank Organisation Ltd. Diffraction gratings
US4589686A (en) * 1980-11-05 1986-05-20 Mcgrew Stephen P Anticounterfeiting method and device
US4629282A (en) * 1980-11-05 1986-12-16 Mcgrew Stephen P Diffractive color and texture effects for the graphic arts
US4717221A (en) * 1980-11-05 1988-01-05 Mcgrew Stephen P Diffractive color and texture effects for the graphic arts
DE3803054A1 (en) * 1987-02-21 1988-09-01 Ferranti Plc A method and apparatus for producing holographic optical elements
US4820898A (en) * 1986-08-27 1989-04-11 U.S. Philips Corporation Ion beam apparatus for finishing patterns
US4832424A (en) * 1982-09-30 1989-05-23 Mcgrew Stephen P White-light viewable, cylindrical holograms and method of spatially filtering wavefronts
GB2222000A (en) * 1988-06-22 1990-02-21 Dimplex Ltd Glen Optical component used for flame effect in heating apparatus
GB2237378A (en) * 1989-10-17 1991-05-01 Street Graham S B Measurement or spectra

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148549A (en) * 1975-12-08 1979-04-10 The Rank Organisation Ltd. Diffraction gratings
US4589686A (en) * 1980-11-05 1986-05-20 Mcgrew Stephen P Anticounterfeiting method and device
US4629282A (en) * 1980-11-05 1986-12-16 Mcgrew Stephen P Diffractive color and texture effects for the graphic arts
US4717221A (en) * 1980-11-05 1988-01-05 Mcgrew Stephen P Diffractive color and texture effects for the graphic arts
US4832424A (en) * 1982-09-30 1989-05-23 Mcgrew Stephen P White-light viewable, cylindrical holograms and method of spatially filtering wavefronts
US4820898A (en) * 1986-08-27 1989-04-11 U.S. Philips Corporation Ion beam apparatus for finishing patterns
DE3803054A1 (en) * 1987-02-21 1988-09-01 Ferranti Plc A method and apparatus for producing holographic optical elements
GB2222000A (en) * 1988-06-22 1990-02-21 Dimplex Ltd Glen Optical component used for flame effect in heating apparatus
GB2237378A (en) * 1989-10-17 1991-05-01 Street Graham S B Measurement or spectra
EP0428270A1 (en) * 1989-10-17 1991-05-22 Ics-Texicon Limited Spectrophotometer
US5170222A (en) * 1989-10-17 1992-12-08 Ics-Texicon Limited Measurement of spectra

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930509