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GB1327705A - Display devices for use with coherent lihgt sources - Google Patents

Display devices for use with coherent lihgt sources

Info

Publication number
GB1327705A
GB1327705A GB2372271A GB2372271A GB1327705A GB 1327705 A GB1327705 A GB 1327705A GB 2372271 A GB2372271 A GB 2372271A GB 2372271 A GB2372271 A GB 2372271A GB 1327705 A GB1327705 A GB 1327705A
Authority
GB
United Kingdom
Prior art keywords
coherent
lihgt
sources
display devices
liquid crystal
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
GB2372271A
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 Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Publication of GB1327705A publication Critical patent/GB1327705A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G02B5/0252—Diffusing elements; Afocal elements characterised by the diffusing properties using holographic or diffractive means
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)

Abstract

1327705 Modulating light SIEMENS AG 19 April 1971 [12 March 1970] 23722/71 Heading H4F [Also in Division G2] The granular appearance of an image produced by coherent light is reduced by directing the image on to a liquid crystal cell operated so as to exhibit a dynamic optical scattering effect. The cell may comprise liquid crystal material disposed between glass plates coated with a transparent conductor, e.g. cassiterite, or a thin layer of gold or silver.
GB2372271A 1970-03-12 1971-04-19 Display devices for use with coherent lihgt sources Expired GB1327705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702011789 DE2011789C3 (en) 1970-03-12 1970-03-12 Arrangement for the scattering of coherent light that appears to be free of granulation

Publications (1)

Publication Number Publication Date
GB1327705A true GB1327705A (en) 1973-08-22

Family

ID=5764912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2372271A Expired GB1327705A (en) 1970-03-12 1971-04-19 Display devices for use with coherent lihgt sources

Country Status (9)

Country Link
BE (1) BE764186A (en)
CA (1) CA963136A (en)
DE (1) DE2011789C3 (en)
DK (1) DK124781B (en)
FR (1) FR2081875B1 (en)
GB (1) GB1327705A (en)
LU (1) LU62767A1 (en)
NL (1) NL150918B (en)
NO (1) NO128131B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235990A (en) * 1989-08-23 1991-03-20 Philips Electronic Associated Rear projection screens and projection systems incorporating such
US20170031172A1 (en) * 2015-07-30 2017-02-02 Eastman Kodak Company Optical modulator for laser speckle reduction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1499660A (en) * 1966-11-09 1967-10-27 Rca Corp electro-optical elements, and their manufacturing process, in particular for making optical information devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235990A (en) * 1989-08-23 1991-03-20 Philips Electronic Associated Rear projection screens and projection systems incorporating such
US20170031172A1 (en) * 2015-07-30 2017-02-02 Eastman Kodak Company Optical modulator for laser speckle reduction
US9958700B2 (en) * 2015-07-30 2018-05-01 Eastman Kodak Company Optical modulator for laser speckle reduction

Also Published As

Publication number Publication date
LU62767A1 (en) 1971-08-23
DE2011789C3 (en) 1978-09-21
FR2081875A1 (en) 1971-12-10
DE2011789A1 (en) 1971-09-30
BE764186A (en) 1971-08-02
NO128131B (en) 1973-10-01
NL150918B (en) 1976-09-15
CA963136A (en) 1975-02-18
NL7103352A (en) 1971-09-14
DE2011789B2 (en) 1973-04-05
FR2081875B1 (en) 1975-03-21
DK124781B (en) 1972-11-20

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Legal Events

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