FR2789186B1 - Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides - Google Patents

Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides

Info

Publication number
FR2789186B1
FR2789186B1 FR9901182A FR9901182A FR2789186B1 FR 2789186 B1 FR2789186 B1 FR 2789186B1 FR 9901182 A FR9901182 A FR 9901182A FR 9901182 A FR9901182 A FR 9901182A FR 2789186 B1 FR2789186 B1 FR 2789186B1
Authority
FR
France
Prior art keywords
enlarging
liquid crystal
viewing angle
crystal screen
optical stack
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
FR9901182A
Other languages
English (en)
Other versions
FR2789186A1 (fr
Inventor
Laurent Bignolles
Lauzun Frederic De
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 Avionics SAS
Original Assignee
Thales Avionics SAS
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 Thales Avionics SAS filed Critical Thales Avionics SAS
Priority to FR9901182A priority Critical patent/FR2789186B1/fr
Publication of FR2789186A1 publication Critical patent/FR2789186A1/fr
Application granted granted Critical
Publication of FR2789186B1 publication Critical patent/FR2789186B1/fr
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
    • G02F1/133—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
    • G02F1/133632—Birefringent elements, e.g. for optical compensation with refractive index ellipsoid inclined relative to the LC-layer surface
    • 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
    • G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
FR9901182A 1999-02-02 1999-02-02 Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides Expired - Fee Related FR2789186B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9901182A FR2789186B1 (fr) 1999-02-02 1999-02-02 Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9901182A FR2789186B1 (fr) 1999-02-02 1999-02-02 Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides

Publications (2)

Publication Number Publication Date
FR2789186A1 FR2789186A1 (fr) 2000-08-04
FR2789186B1 true FR2789186B1 (fr) 2002-01-18

Family

ID=9541508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9901182A Expired - Fee Related FR2789186B1 (fr) 1999-02-02 1999-02-02 Empilement optique elargissant l'angle de vue horizontal d'un ecran a cristaux liquides

Country Status (1)

Country Link
FR (1) FR2789186B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4032568B2 (ja) * 1999-06-30 2008-01-16 カシオ計算機株式会社 液晶表示装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3006397B2 (ja) * 1994-03-15 2000-02-07 松下電器産業株式会社 液晶表示素子
FR2754609B1 (fr) * 1996-10-15 1998-12-18 Sextant Avionique Panneau de visualisation avec compensation par films birefringents holographiques
CA2239533C (fr) * 1997-06-05 2006-11-14 Ois Optical Imaging Systems, Inc. Afficheur a cristaux liquides nematiques en helice normalement blancs utilisant des retardateurs negatifs inclines montes sur l'une des faces de la cellule de cristaux liquides
JPH1124066A (ja) * 1997-07-04 1999-01-29 Sony Corp 液晶表示装置

Also Published As

Publication number Publication date
FR2789186A1 (fr) 2000-08-04

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20061031