GB2394793B - Projection display with variable aperture - Google Patents

Projection display with variable aperture

Info

Publication number
GB2394793B
GB2394793B GB0320333A GB0320333A GB2394793B GB 2394793 B GB2394793 B GB 2394793B GB 0320333 A GB0320333 A GB 0320333A GB 0320333 A GB0320333 A GB 0320333A GB 2394793 B GB2394793 B GB 2394793B
Authority
GB
United Kingdom
Prior art keywords
projection display
variable aperture
aperture
variable
projection
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 - Lifetime
Application number
GB0320333A
Other languages
English (en)
Other versions
GB0320333D0 (en
GB2394793A (en
Inventor
Futoshi Yamasaki
Satoshi Nakayama
Takuya Shiaki
Tsutomu Nakashima
Eiji Yamaguchi
Nobuyuki Kimura
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB0320333D0 publication Critical patent/GB0320333D0/en
Publication of GB2394793A publication Critical patent/GB2394793A/en
Application granted granted Critical
Publication of GB2394793B publication Critical patent/GB2394793B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)
GB0320333A 2002-09-06 2003-08-29 Projection display with variable aperture Expired - Lifetime GB2394793B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002261633 2002-09-06
JP2003171474A JP4158611B2 (ja) 2002-09-06 2003-06-17 投射型映像表示装置

Publications (3)

Publication Number Publication Date
GB0320333D0 GB0320333D0 (en) 2003-10-01
GB2394793A GB2394793A (en) 2004-05-05
GB2394793B true GB2394793B (en) 2006-06-28

Family

ID=28793659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0320333A Expired - Lifetime GB2394793B (en) 2002-09-06 2003-08-29 Projection display with variable aperture

Country Status (5)

Country Link
US (1) US6854851B2 (enExample)
JP (1) JP4158611B2 (enExample)
CN (2) CN101625512B (enExample)
GB (1) GB2394793B (enExample)
TW (1) TWI246627B (enExample)

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AU2003295807A1 (en) * 2002-12-30 2004-07-29 Fannie Mae System and method for verifying loan data at delivery
NL1025769C2 (nl) * 2003-03-20 2006-01-17 Samsung Electronics Co Ltd Projectiesysteem.
DE602004025437D1 (de) * 2003-06-13 2010-03-25 Sony Corp Projektionsanzeigevorrichtung
WO2005015894A2 (en) 2003-08-08 2005-02-17 Eclipse Video Technology Llc Method and apparatus for increasing effective contrast ratio and brightness yields for digital light valve image projectors
WO2005026835A1 (ja) * 2003-09-10 2005-03-24 Matsushita Electric Industrial Co., Ltd. 投射型表示装置
KR20050091279A (ko) * 2004-03-11 2005-09-15 삼성전자주식회사 실시간으로 조절되는 조리개를 구비한 광학 시스템
US7344255B2 (en) * 2004-04-01 2008-03-18 Nisca Corporation Light amount adjusting apparatus and projector using the same
JP4714431B2 (ja) * 2004-06-29 2011-06-29 株式会社Ｓｕｗａオプトロニクス 投射レンズ装置及びプロジェクタ装置
JP2006072203A (ja) * 2004-09-06 2006-03-16 Nec Corp 液晶表示装置、及び、液晶プロジェクタ
US7182470B2 (en) * 2004-09-09 2007-02-27 Nisca Corporation Light amount control apparatus and projector apparatus using the same
JP2006091588A (ja) * 2004-09-24 2006-04-06 Sanyo Electric Co Ltd 投写型映像表示装置
JP4357395B2 (ja) * 2004-09-24 2009-11-04 三洋電機株式会社 投写型映像表示装置
CN100466707C (zh) * 2004-10-08 2009-03-04 索尼株式会社 显示装置
JP2008527448A (ja) * 2005-01-12 2008-07-24 カラーリンク・インコーポレイテッド 照明減衰システム
TWI258019B (en) * 2005-01-25 2006-07-11 Benq Corp Projection optical system
JP4789488B2 (ja) * 2005-03-11 2011-10-12 キヤノン株式会社 光学系および画像投射装置
US7333157B2 (en) * 2005-03-16 2008-02-19 Canon Kabushiki Kaisha Image display device
WO2006137416A1 (ja) * 2005-06-21 2006-12-28 Sony Corporation 投射型表示装置
JP4904741B2 (ja) 2005-08-09 2012-03-28 株式会社日立製作所 投射型映像表示装置および遮光方法
KR101199363B1 (ko) * 2005-08-29 2012-11-09 엘지전자 주식회사 최적화된 명암비를 제공하는 투사형 디스플레이 장치 및 그제어방법
JP4886254B2 (ja) * 2005-09-13 2012-02-29 キヤノン株式会社 光学系および画像投射装置
JP5140914B2 (ja) * 2005-09-27 2013-02-13 株式会社Ｊｖｃケンウッド 画像表示装置
TWI307444B (en) * 2006-07-20 2009-03-11 Coretronic Corp Imaging system and projection apparatus
JP4197527B2 (ja) * 2006-08-18 2008-12-17 三菱電機株式会社 投射型表示装置
WO2008032632A1 (en) * 2006-09-13 2008-03-20 Panasonic Corporation Projection type image display device
GB2441785B (en) * 2006-09-15 2009-08-12 Schlumberger Holdings Ruggedized pressure sensor
CA2631144C (en) * 2007-06-05 2011-03-15 Mitsubishi Electric Corporation Projection display
CN100592138C (zh) * 2007-07-13 2010-02-24 鸿富锦精密工业（深圳）有限公司 液晶投影仪的光学系统
JP2010008767A (ja) * 2008-06-27 2010-01-14 Hitachi Ltd 光学ユニット及び投射型映像表示装置
JP5298698B2 (ja) * 2008-08-20 2013-09-25 パナソニック株式会社 投写型表示装置
JP5277821B2 (ja) * 2008-09-17 2013-08-28 株式会社ニコン 偏光変換素子、照明光学系及びプロジェクタ装置
JP5380028B2 (ja) 2008-09-25 2014-01-08 日立コンシューマエレクトロニクス株式会社 投射型映像表示装置および投射方法
JP5212161B2 (ja) * 2009-02-18 2013-06-19 セイコーエプソン株式会社 プロジェクター
JP4670977B2 (ja) * 2009-03-11 2011-04-13 セイコーエプソン株式会社 プロジェクター
JP5267250B2 (ja) * 2009-03-18 2013-08-21 セイコーエプソン株式会社 調光装置及びかかる調光装置を用いたプロジェクター用の照明装置
JP2011141395A (ja) * 2010-01-06 2011-07-21 Sanyo Electric Co Ltd 投写型映像表示装置
JP5471695B2 (ja) * 2010-03-25 2014-04-16 セイコーエプソン株式会社 プロジェクター
JP5316510B2 (ja) * 2010-10-26 2013-10-16 株式会社Ｊｖｃケンウッド 投射型表示装置
JP2013168834A (ja) * 2012-02-16 2013-08-29 Jvc Kenwood Corp 投射型画像表示装置
JP6232867B2 (ja) * 2013-09-11 2017-11-22 セイコーエプソン株式会社 プロジェクター
JP6608960B2 (ja) * 2016-01-08 2019-11-20 マクセル株式会社 プロジェクタ装置
WO2017130121A1 (en) 2016-01-26 2017-08-03 Imax Corporation Stereo image projection with high intra-frame contrast
JP6717125B2 (ja) * 2016-09-01 2020-07-01 株式会社Ｊｖｃケンウッド 発光装置及び投射型画像表示装置
CN111344605B (zh) * 2017-11-14 2023-10-20 图像影院国际有限公司 针对影院的直视型显示器的光调节
JP2020060688A (ja) 2018-10-10 2020-04-16 ソニー株式会社 照明装置、および表示装置
DE112020007572T5 (de) * 2020-08-31 2023-06-22 Mitsubishi Electric Corporation Abstandsmessvorrichtung
EP4370976A4 (en) * 2021-07-16 2025-10-29 Imax Corp ADJUSTABLE LENS OPENING ELEMENT IN A PROJECTION LENS

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5379083A (en) * 1994-02-15 1995-01-03 Raychem Corporation Projector
US5622418A (en) * 1994-03-29 1997-04-22 Mitsubishi Denki Kabuskiki Kaisha Projection display device
US5671993A (en) * 1992-01-06 1997-09-30 Mitsubishi Denki Kabushiki Kaisha Projection-type apparatus
US5924783A (en) * 1997-07-24 1999-07-20 Raychem Corporation System for controlling contrast in projection displays
JP2001222002A (ja) * 2000-02-10 2001-08-17 Sony Corp 液晶プロジェクタ装置
US20020021569A1 (en) * 2001-10-05 2002-02-21 Beliveau Richard S. Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
JP2002072361A (ja) * 2000-09-04 2002-03-12 Canon Inc 照明光学系、該照明光学系を有する光学装置、画像処理装置

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NL8901077A (nl) * 1989-04-28 1990-11-16 Koninkl Philips Electronics Nv Optische belichtingsstelsel en projectie-apparaat voorzien van een dergelijk stelsel.
JPH0463318A (ja) 1990-04-16 1992-02-28 Sharp Corp 液晶プロジェクター
JPH06342158A (ja) 1993-06-01 1994-12-13 Hitachi Ltd 液晶プロジェクタ及び照明装置
US5519518A (en) * 1993-12-27 1996-05-21 Kabushiki Kaisha Toshiba Display apparatus with a variable aperture stop means on each side of the modulator
JP3424023B2 (ja) 1994-08-30 2003-07-07 カシオ計算機株式会社 Ｌｃｄプロジェクタ
JP2001100699A (ja) * 1999-09-29 2001-04-13 Canon Inc 投射型表示装置とその応用システム
JP3433406B2 (ja) * 1999-10-18 2003-08-04 インターナショナル・ビジネス・マシーンズ・コーポレーション ホワイトポイント調整方法、カラー画像処理方法、ホワイトポイント調整装置、および液晶表示装置
JP3578020B2 (ja) * 1999-11-12 2004-10-20 日本ビクター株式会社 反射型液晶プロジェクタ
JP4333023B2 (ja) * 2000-11-24 2009-09-16 ソニー株式会社 デジタル信号処理回路、これを用いた表示装置および液晶プロジェクタ
JP3992268B2 (ja) * 2001-09-28 2007-10-17 フジノン株式会社 投写型画像表示装置
US7136035B2 (en) * 2001-12-11 2006-11-14 Seiko Epson Corporation Projection type display, a display and a drive method thereof
JP4144384B2 (ja) * 2003-03-11 2008-09-03 セイコーエプソン株式会社 プロジェクタ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5671993A (en) * 1992-01-06 1997-09-30 Mitsubishi Denki Kabushiki Kaisha Projection-type apparatus
US5379083A (en) * 1994-02-15 1995-01-03 Raychem Corporation Projector
US5622418A (en) * 1994-03-29 1997-04-22 Mitsubishi Denki Kabuskiki Kaisha Projection display device
US5924783A (en) * 1997-07-24 1999-07-20 Raychem Corporation System for controlling contrast in projection displays
JP2001222002A (ja) * 2000-02-10 2001-08-17 Sony Corp 液晶プロジェクタ装置
JP2002072361A (ja) * 2000-09-04 2002-03-12 Canon Inc 照明光学系、該照明光学系を有する光学装置、画像処理装置
US20020021569A1 (en) * 2001-10-05 2002-02-21 Beliveau Richard S. Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio

Also Published As

Publication number Publication date
US20040080722A1 (en) 2004-04-29
CN101625512A (zh) 2010-01-13
GB0320333D0 (en) 2003-10-01
JP2004151674A (ja) 2004-05-27
GB2394793A (en) 2004-05-05
CN101625512B (zh) 2012-02-01
CN1493915A (zh) 2004-05-05
TW200406639A (en) 2004-05-01
US6854851B2 (en) 2005-02-15
TWI246627B (en) 2006-01-01
CN100541316C (zh) 2009-09-16
JP4158611B2 (ja) 2008-10-01

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Legal Events

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130822 AND 20130828

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20220728 AND 20220803

PE20 Patent expired after termination of 20 years

Expiry date: 20230828