GB1489804A - Light equalizer method and making same and optical system using same - Google Patents

Light equalizer method and making same and optical system using same

Info

Publication number
GB1489804A
GB1489804A GB1196975A GB1196975A GB1489804A GB 1489804 A GB1489804 A GB 1489804A GB 1196975 A GB1196975 A GB 1196975A GB 1196975 A GB1196975 A GB 1196975A GB 1489804 A GB1489804 A GB 1489804A
Authority
GB
United Kingdom
Prior art keywords
same
equalizer
optical system
optical
light
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
GB1196975A
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.)
Environmental Research and Technology Inc
ENVIRONMENTAL RES AND Technology
Original Assignee
Environmental Research and Technology Inc
ENVIRONMENTAL RES AND Technology
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 US458124A external-priority patent/US3887262A/en
Application filed by Environmental Research and Technology Inc, ENVIRONMENTAL RES AND Technology filed Critical Environmental Research and Technology Inc
Publication of GB1489804A publication Critical patent/GB1489804A/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
    • G02B27/30—Collimators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0994—Fibers, light pipes
    • 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
    • G02B27/40—Optical focusing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/24—Liquid filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters

Abstract

1489804 Lighting fittings ENVIRONMENTAL RESEARCH & TECHNOLOGY Inc 21 March 1975 [5 April 1974 (2)] 11969/75 Heading F4R An optical system including an optical device, such as an interference band-pass filter, having a transmission characteristic which is dependent on the angle of incidence of input radiation comprises an optical equalizer designed to produce a substantially uniform light intensity across its output aperture irrespective of intensity variations across its input aperture, and means for collimating the light emitted by the equalizer and directing it to the device. The equalizer may be of the type disclosed in Specifications 1,489,805 or 1,489,806 or alternatively may consist of powdered material suspended in a light transmissive liquid.
GB1196975A 1974-04-05 1975-03-21 Light equalizer method and making same and optical system using same Expired GB1489804A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45829374A 1974-04-05 1974-04-05
US458124A US3887262A (en) 1974-04-05 1974-04-05 Light equalizer and method of making same

Publications (1)

Publication Number Publication Date
GB1489804A true GB1489804A (en) 1977-10-26

Family

ID=27038869

Family Applications (3)

Application Number Title Priority Date Filing Date
GB193876A Expired GB1489805A (en) 1974-04-05 1975-03-21 Light equalizer
GB193976A Expired GB1489806A (en) 1974-04-05 1975-03-21 Light equalizer
GB1196975A Expired GB1489804A (en) 1974-04-05 1975-03-21 Light equalizer method and making same and optical system using same

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB193876A Expired GB1489805A (en) 1974-04-05 1975-03-21 Light equalizer
GB193976A Expired GB1489806A (en) 1974-04-05 1975-03-21 Light equalizer

Country Status (5)

Country Link
JP (1) JPS50137553A (en)
DE (1) DE2514191A1 (en)
FR (1) FR2274937A1 (en)
GB (3) GB1489805A (en)
NL (1) NL7503848A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392405A1 (en) * 1976-06-03 1978-12-22 Labo Cent Telecommunicat Communications system optical mixer - has uniform division of input through transparent walled cylinder constructed according to given mathematical relationship
DE2952209C2 (en) * 1979-12-22 1984-03-15 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Arrangement for point-by-point and line-by-line recording of image information
WO2010044030A1 (en) * 2008-10-16 2010-04-22 Koninklijke Philips Electronics N.V. Illumination device configured to mix light from a first and a second light emitting device
CN113805404B (en) * 2021-11-17 2022-02-18 滨州学院 Uniform lighting device for line scanning photoelectric imaging

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642772A (en) * 1923-03-10 1927-09-20 Famous Players Lasky Corp Process of and apparatus for eliminating granular effects in photographic enlargements
US1880414A (en) * 1930-01-03 1932-10-04 Eastman Kodak Co Illuminating system for photographic apparatus
US3202016A (en) * 1962-04-11 1965-08-24 Case Co J I Tractor improvements
US3371978A (en) * 1964-02-12 1968-03-05 North American Aviation Inc Pressure-sensitive optical cell
JPS4421110Y1 (en) * 1966-01-13 1969-09-08
DE1954802B1 (en) * 1969-10-31 1971-03-04 Jenaer Glaswerk Schott & Gen Optical stray light filter and process for its manufacture

Also Published As

Publication number Publication date
NL7503848A (en) 1975-10-07
JPS50137553A (en) 1975-10-31
GB1489806A (en) 1977-10-26
FR2274937A1 (en) 1976-01-09
FR2274937B1 (en) 1982-03-05
DE2514191A1 (en) 1975-10-16
GB1489805A (en) 1977-10-26

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Legal Events

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