DE69705932T2 - Kontrastverbesserung bei Bildprojektoren mit Flüssigkristalllichtventil - Google Patents
Kontrastverbesserung bei Bildprojektoren mit FlüssigkristalllichtventilInfo
- Publication number
- DE69705932T2 DE69705932T2 DE69705932T DE69705932T DE69705932T2 DE 69705932 T2 DE69705932 T2 DE 69705932T2 DE 69705932 T DE69705932 T DE 69705932T DE 69705932 T DE69705932 T DE 69705932T DE 69705932 T2 DE69705932 T2 DE 69705932T2
- Authority
- DE
- Germany
- Prior art keywords
- lcd
- light valve
- polarizer
- analyzer
- 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 - Fee Related
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97870070A EP0880279B1 (de) | 1997-05-20 | 1997-05-20 | Kontrastverbesserung bei Bildprojektoren mit Flüssigkristalllichtventil |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69705932D1 DE69705932D1 (de) | 2001-09-06 |
DE69705932T2 true DE69705932T2 (de) | 2002-04-18 |
Family
ID=8231001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69705932T Expired - Fee Related DE69705932T2 (de) | 1997-05-20 | 1997-05-20 | Kontrastverbesserung bei Bildprojektoren mit Flüssigkristalllichtventil |
Country Status (9)
Country | Link |
---|---|
US (1) | US6224215B1 (de) |
EP (1) | EP0880279B1 (de) |
JP (1) | JP2001526801A (de) |
AT (1) | ATE203867T1 (de) |
AU (1) | AU7419298A (de) |
CA (1) | CA2290686C (de) |
DE (1) | DE69705932T2 (de) |
NO (1) | NO316578B1 (de) |
WO (1) | WO1998053608A1 (de) |
Families Citing this family (10)
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 |
EP1688766B1 (de) * | 2000-01-28 | 2011-04-27 | Seiko Epson Corporation | Lichtreflektierender Polarisator und Projektor damit |
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 |
CN104412158B (zh) * | 2012-07-01 | 2016-12-07 | 巴科股份有限公司 | 投影仪光学器件 |
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)
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 |
EP0409246B1 (de) * | 1989-07-20 | 1997-04-23 | SANYO ELECTRIC Co., Ltd. | Flüssigkristallprojektor |
JP2755708B2 (ja) * | 1989-08-11 | 1998-05-25 | 三洋電機株式会社 | 液晶プロジェクタ |
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 |
-
1997
- 1997-05-20 AT AT97870070T patent/ATE203867T1/de not_active IP Right Cessation
- 1997-05-20 DE DE69705932T patent/DE69705932T2/de not_active Expired - Fee Related
- 1997-05-20 EP EP97870070A patent/EP0880279B1/de not_active Expired - Lifetime
-
1998
- 1998-05-20 CA CA002290686A patent/CA2290686C/en not_active Expired - Fee Related
- 1998-05-20 AU AU74192/98A patent/AU7419298A/en not_active Abandoned
- 1998-05-20 JP JP54972098A patent/JP2001526801A/ja active Pending
- 1998-05-20 WO PCT/BE1998/000073 patent/WO1998053608A1/en active Application Filing
-
1999
- 1999-11-12 US US09/438,381 patent/US6224215B1/en not_active Expired - Lifetime
- 1999-11-15 NO NO995597A patent/NO316578B1/no unknown
Also Published As
Publication number | Publication date |
---|---|
US6224215B1 (en) | 2001-05-01 |
AU7419298A (en) | 1998-12-11 |
CA2290686A1 (en) | 1998-11-26 |
NO995597L (no) | 1999-11-15 |
ATE203867T1 (de) | 2001-08-15 |
DE69705932D1 (de) | 2001-09-06 |
JP2001526801A (ja) | 2001-12-18 |
CA2290686C (en) | 2003-12-23 |
EP0880279B1 (de) | 2001-08-01 |
NO995597D0 (no) | 1999-11-15 |
EP0880279A1 (de) | 1998-11-25 |
NO316578B1 (no) | 2004-02-23 |
WO1998053608A1 (en) | 1998-11-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5280628B2 (ja) | 液晶ディスプレイのスクリーン用の背面照明系及び対応する表示デバイス | |
KR950019953A (ko) | 투영노광장치 | |
KR910021603A (ko) | 투사형 액정 표시장치 | |
EP1061408A1 (de) | Beleuchtungsanordnung und projektionsanzeige | |
KR970071451A (ko) | 엘시디(lcd) 프로젝터 | |
ATE203867T1 (de) | Kontrastverbesserung bei bildprojektoren mit flüssigkristalllichtventil | |
KR980003683A (ko) | 투사형 액정 표시 장치 | |
US6943850B2 (en) | Optical apparatus and projection type display apparatus for reducing a physical distance between a light source and a display | |
US7959306B2 (en) | Displaying method of digital light processing (DLP) projector and DLP projector using the same | |
US7611247B2 (en) | Illumination aperture for projection display | |
US6031587A (en) | Optical member, optical instrument including the same, and method of manufacturing the optical member | |
US6407871B1 (en) | Optical device for eliminating stray light | |
JP2002303931A (ja) | 照明装置およびこれを用いたプロジェクタ | |
KR19980068378A (ko) | 액정 프로젝터의 광학장치 | |
US5120125A (en) | Overhead projector with small and large stage surfaces | |
KR960032033A (ko) | 광폭조절장치 및 이를 채용한 화상투사기 | |
JPH06317800A (ja) | 表示装置及びそれを用いた投射装置 | |
US20020057418A1 (en) | Method and apparatus for use in a projection display to prevent ghost images on or near a projected image | |
TWI670560B (zh) | 投影機 | |
JP2000098488A (ja) | 照明光学装置 | |
JP2678863B2 (ja) | 画像投影装置 | |
KR970012275A (ko) | 액정프로젝트 장치 | |
JPH07301800A (ja) | 液晶プロジェクタの光源装置 | |
JPH11133351A (ja) | 投写装置 | |
KR900009062B1 (ko) | Lcd 프로젝터의 광학계 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8327 | Change in the person/name/address of the patent owner |
Owner name: BARCO N.V., KORTRIJK, BE |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |