FR2292254B1 - - Google Patents

Info

Publication number
FR2292254B1
FR2292254B1 FR7438284A FR7438284A FR2292254B1 FR 2292254 B1 FR2292254 B1 FR 2292254B1 FR 7438284 A FR7438284 A FR 7438284A FR 7438284 A FR7438284 A FR 7438284A FR 2292254 B1 FR2292254 B1 FR 2292254B1
Authority
FR
France
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
FR7438284A
Other versions
FR2292254A1 (fr
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7438284A priority Critical patent/FR2292254A1/fr
Priority to US05/632,954 priority patent/US3988056A/en
Priority to JP50138771A priority patent/JPS5185734A/ja
Priority to DE19752552370 priority patent/DE2552370A1/de
Publication of FR2292254A1 publication Critical patent/FR2292254A1/fr
Application granted granted Critical
Publication of FR2292254B1 publication Critical patent/FR2292254B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/538—Discriminating between fixed and moving objects or between objects moving at different speeds eliminating objects that have not moved between successive antenna scans, e.g. area MTi
    • 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
    • G02F1/0009—Materials therefor
    • G02F1/0045—Liquid crystals characterised by their physical properties
    • 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
    • G02F3/00—Optical logic elements; Optical bistable devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Radiation Pyrometers (AREA)
FR7438284A 1974-11-21 1974-11-21 Procede de visualisation a cristal liquide, dispositif de traitement de l'information appliquant ce procede Granted FR2292254A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7438284A FR2292254A1 (fr) 1974-11-21 1974-11-21 Procede de visualisation a cristal liquide, dispositif de traitement de l'information appliquant ce procede
US05/632,954 US3988056A (en) 1974-11-21 1975-11-18 Liquid-crystal display method and information-processing apparatus applying this method
JP50138771A JPS5185734A (fr) 1974-11-21 1975-11-20
DE19752552370 DE2552370A1 (de) 1974-11-21 1975-11-21 Fluessigkristall-anzeigeverfahren, sowie informationsverarbeitungsanordnung zur anwendung des verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7438284A FR2292254A1 (fr) 1974-11-21 1974-11-21 Procede de visualisation a cristal liquide, dispositif de traitement de l'information appliquant ce procede

Publications (2)

Publication Number Publication Date
FR2292254A1 FR2292254A1 (fr) 1976-06-18
FR2292254B1 true FR2292254B1 (fr) 1977-03-25

Family

ID=9145130

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7438284A Granted FR2292254A1 (fr) 1974-11-21 1974-11-21 Procede de visualisation a cristal liquide, dispositif de traitement de l'information appliquant ce procede

Country Status (4)

Country Link
US (1) US3988056A (fr)
JP (1) JPS5185734A (fr)
DE (1) DE2552370A1 (fr)
FR (1) FR2292254A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389955B1 (fr) * 1977-05-05 1981-12-04 Thomson Csf
FR2511798A1 (fr) * 1981-08-21 1983-02-25 Thomson Csf Dispositif de visualisation a cristal liquide smectique
JPS5887535A (ja) * 1981-11-20 1983-05-25 Sony Corp 液晶表示装置
US4588992A (en) * 1982-11-01 1986-05-13 Clark William E Radar tracking system and display
US5016984A (en) * 1984-03-02 1991-05-21 Manchester R & D Partnership Liquid crystal motion picture projector with memory
US5061041A (en) * 1984-03-02 1991-10-29 Manchester R&D Partnership Liquid crystal motion picture projector with memory
US4855976A (en) * 1985-06-14 1989-08-08 Semiconductor Energy Laboratory Co., Ltd. Information writing method for an optical disc memory system utilizing a smectic chiral liquid crystal
EP0205187B1 (fr) * 1985-06-14 1994-03-09 Sel Semiconductor Energy Laboratory Co., Ltd. Mémoire à disque optique à cristaux liquides
US4815035A (en) * 1986-04-08 1989-03-21 Trw Inc. Scrolling liquid crystal spatial light modulator
US4835751A (en) * 1986-06-13 1989-05-30 Semiconductor Energy Laboratory, Ltd. Reading system for use with optical disc memory system utilizing a smectic chiral liquid crystal
US4853911A (en) * 1986-06-13 1989-08-01 Semiconductor Energy Laboratory Co., Ltd. Optical disc memory system utilizing a smectic chiral liquid crystal
US4952031A (en) * 1987-06-19 1990-08-28 Victor Company Of Japan, Ltd. Liquid crystal display device
US5268776A (en) * 1988-03-18 1993-12-07 Hitachi, Ltd. System for partially erasing thermally written liquid crystal element
US5251197A (en) * 1992-02-13 1993-10-05 Hoechst Celanses Corp. Polarization dependent writing and erasing process for organic optical media

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775757A (en) * 1971-11-17 1973-11-27 Int Liquid Xtal Co Liquid crystal memory, system utilizing the memory and methods of constructing and operating such a memory
US3836243A (en) * 1972-06-27 1974-09-17 Bell Telephone Labor Inc Liquid crystal display apparatus
US3796999A (en) * 1972-10-19 1974-03-12 Bell Telephone Labor Inc Locally erasable thermo-optic smectic liquid crystal storage displays

Also Published As

Publication number Publication date
DE2552370A1 (de) 1976-05-26
US3988056A (en) 1976-10-26
JPS5185734A (fr) 1976-07-27
FR2292254A1 (fr) 1976-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse