NO995597L - Kontrastforbedring i flytende krystall-lysventilprosjektörer - Google Patents

Kontrastforbedring i flytende krystall-lysventilprosjektörer

Info

Publication number
NO995597L
NO995597L NO995597A NO995597A NO995597L NO 995597 L NO995597 L NO 995597L NO 995597 A NO995597 A NO 995597A NO 995597 A NO995597 A NO 995597A NO 995597 L NO995597 L NO 995597L
Authority
NO
Norway
Prior art keywords
lcd
light valve
polarizer
analyzer
alpha
Prior art date
Application number
NO995597A
Other languages
English (en)
Other versions
NO316578B1 (no
NO995597D0 (no
Inventor
Bart Maximus
Patrick Candry
Bart Van Den Bossche
Original Assignee
Barco Nv
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 Barco Nv filed Critical Barco Nv
Publication of NO995597L publication Critical patent/NO995597L/no
Publication of NO995597D0 publication Critical patent/NO995597D0/no
Publication of NO316578B1 publication Critical patent/NO316578B1/no

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
    • G02F1/133528—Polarisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Polarising Elements (AREA)
NO995597A 1997-05-20 1999-11-15 Kontrastforbedring i flytende krystall-lysventilprosjektører NO316578B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97870070A EP0880279B1 (en) 1997-05-20 1997-05-20 Contrast improvement in liquid crystal light valve projectors
PCT/BE1998/000073 WO1998053608A1 (en) 1997-05-20 1998-05-20 Contrast improvement in liquid crystal light valve projectors

Publications (3)

Publication Number Publication Date
NO995597L true NO995597L (no) 1999-11-15
NO995597D0 NO995597D0 (no) 1999-11-15
NO316578B1 NO316578B1 (no) 2004-02-23

Family

ID=8231001

Family Applications (1)

Application Number Title Priority Date Filing Date
NO995597A NO316578B1 (no) 1997-05-20 1999-11-15 Kontrastforbedring i flytende krystall-lysventilprosjektører

Country Status (9)

Country Link
US (1) US6224215B1 (no)
EP (1) EP0880279B1 (no)
JP (1) JP2001526801A (no)
AT (1) ATE203867T1 (no)
AU (1) AU7419298A (no)
CA (1) CA2290686C (no)
DE (1) DE69705932T2 (no)
NO (1) NO316578B1 (no)
WO (1) WO1998053608A1 (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4493113B2 (ja) * 1999-01-29 2010-06-30 株式会社リコー プロジェクタおよび投影画像補正装置
US6592224B2 (en) * 2000-01-28 2003-07-15 Seiko Epson Corporation Optical reflection polarizer and projector comprising the same
US6669343B2 (en) 2001-05-31 2003-12-30 Koninklijke Philips Electronics N.V. Image display system
WO2006026320A2 (en) 2004-08-26 2006-03-09 Be Seen! Solutions, Inc. Image projector display device
US7204599B2 (en) * 2004-12-16 2007-04-17 Hewlett-Packard Development Company, L.P. Offset projection system
US20060181552A1 (en) * 2005-02-11 2006-08-17 Siemens Medical Solutions Usa, Inc. Image display calibration for ultrasound and other systems
US20080122996A1 (en) * 2006-11-29 2008-05-29 Nano Loa, Inc. Off-axis projection system
JP4441891B2 (ja) * 2007-03-22 2010-03-31 カシオ計算機株式会社 投射装置
JP6170554B2 (ja) * 2012-07-01 2017-07-26 バルコ・ナムローゼ・フエンノートシャップ 投射器光学素子
CN110933266B (zh) * 2019-07-15 2021-12-21 华为技术有限公司 摄像装置、方法及调节元件

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5220363A (en) * 1988-09-14 1993-06-15 Casio Computer Co., Ltd. Projector
JPH037110A (ja) 1989-06-02 1991-01-14 Yamaha Corp ヘッドボード付き寝台
JP2755708B2 (ja) * 1989-08-11 1998-05-25 三洋電機株式会社 液晶プロジェクタ
DE69030537T2 (de) * 1989-07-20 1997-12-04 Sanyo Electric Co Flüssigkristallprojektor
US5422691A (en) * 1991-03-15 1995-06-06 Seiko Epson Corporation Projection type displaying apparatus and illumination system
JP2861547B2 (ja) * 1991-11-15 1999-02-24 松下電器産業株式会社 投写型表示装置
FR2693020B1 (fr) 1992-06-26 1999-01-22 Thomson Consumer Electronics Dispositif d'affichage a cristal liquide nematique en helice.
JP3320862B2 (ja) * 1992-11-26 2002-09-03 旭光学工業株式会社 投影光学系の瞳共役結合装置
US5355188A (en) * 1993-09-09 1994-10-11 In Focus Systems, Inc. Method and apparatus for distortion correction in optical projectors
US5576854A (en) 1993-11-12 1996-11-19 Hughes-Jvc Technology Corporation Liquid crystal light valve projector with improved contrast ratio and with 0.27 wavelength compensation for birefringence in the liquid crystal light valve
JPH07234401A (ja) * 1994-02-24 1995-09-05 Fujitsu Ltd 投写型液晶ディスプレイ
US5820240A (en) * 1995-06-22 1998-10-13 Minolta Co., Ltd. Projection optical device
JP3138189B2 (ja) * 1995-07-28 2001-02-26 シャープ株式会社 投影型液晶表示装置
US5622417A (en) * 1995-11-01 1997-04-22 Lightware, Inc. Invertible and orthoscopic liquid crystal display projector

Also Published As

Publication number Publication date
NO316578B1 (no) 2004-02-23
DE69705932T2 (de) 2002-04-18
EP0880279A1 (en) 1998-11-25
CA2290686C (en) 2003-12-23
CA2290686A1 (en) 1998-11-26
EP0880279B1 (en) 2001-08-01
WO1998053608A1 (en) 1998-11-26
JP2001526801A (ja) 2001-12-18
AU7419298A (en) 1998-12-11
NO995597D0 (no) 1999-11-15
US6224215B1 (en) 2001-05-01
ATE203867T1 (de) 2001-08-15
DE69705932D1 (de) 2001-09-06

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