FR2834800B1 - DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS - Google Patents

DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS

Info

Publication number
FR2834800B1
FR2834800B1 FR0200348A FR0200348A FR2834800B1 FR 2834800 B1 FR2834800 B1 FR 2834800B1 FR 0200348 A FR0200348 A FR 0200348A FR 0200348 A FR0200348 A FR 0200348A FR 2834800 B1 FR2834800 B1 FR 2834800B1
Authority
FR
France
Prior art keywords
modulation
liquid crystals
thermal images
generating thermal
generating
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 - Fee Related
Application number
FR0200348A
Other languages
French (fr)
Other versions
FR2834800A1 (en
Inventor
Christophe Dufresne
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0200348A priority Critical patent/FR2834800B1/en
Priority to PCT/FR2002/004551 priority patent/WO2003058333A1/en
Priority to AU2002364683A priority patent/AU2002364683A1/en
Publication of FR2834800A1 publication Critical patent/FR2834800A1/en
Application granted granted Critical
Publication of FR2834800B1 publication Critical patent/FR2834800B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
    • G02F1/1395—Optically compensated birefringence [OCB]- cells or PI- cells
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/11—Function characteristic involving infrared radiation
FR0200348A 2002-01-11 2002-01-11 DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS Expired - Fee Related FR2834800B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0200348A FR2834800B1 (en) 2002-01-11 2002-01-11 DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS
PCT/FR2002/004551 WO2003058333A1 (en) 2002-01-11 2002-12-24 Device for the generation of thermal images by modulation using liquid crystals
AU2002364683A AU2002364683A1 (en) 2002-01-11 2002-12-24 Device for the generation of thermal images by modulation using liquid crystals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0200348A FR2834800B1 (en) 2002-01-11 2002-01-11 DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS

Publications (2)

Publication Number Publication Date
FR2834800A1 FR2834800A1 (en) 2003-07-18
FR2834800B1 true FR2834800B1 (en) 2004-04-02

Family

ID=8871260

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0200348A Expired - Fee Related FR2834800B1 (en) 2002-01-11 2002-01-11 DEVICE FOR GENERATING THERMAL IMAGES BY MODULATION USING LIQUID CRYSTALS

Country Status (3)

Country Link
AU (1) AU2002364683A1 (en)
FR (1) FR2834800B1 (en)
WO (1) WO2003058333A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679910A (en) * 1985-03-20 1987-07-14 Hughes Aircraft Company Dual liquid-crystal cell-based visible-to-infrared dynamic image converter
US4723077A (en) * 1985-12-06 1988-02-02 Hughes Aircraft Company Dual liquid crystal light valve based visible-to-infrared dynamic image converter system
JPH0264528A (en) * 1988-08-31 1990-03-05 Matsushita Electric Ind Co Ltd Projecting type display device
JPH02221919A (en) * 1989-02-23 1990-09-04 Fujitsu Ltd Liquid crystal display device
JP3103223B2 (en) * 1992-12-01 2000-10-30 富士通株式会社 Color liquid crystal display
JPH1195246A (en) * 1997-09-19 1999-04-09 Seiko Epson Corp Liquid crystal device and its production
KR100283878B1 (en) * 1999-01-20 2001-02-15 윤종용 reflection-type display apparatus for raising a contrast ratio
JP2001091949A (en) * 1999-09-20 2001-04-06 Hosiden Corp Reflection type liquid crystal display

Also Published As

Publication number Publication date
WO2003058333A1 (en) 2003-07-17
AU2002364683A1 (en) 2003-07-24
FR2834800A1 (en) 2003-07-18

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Legal Events

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