JP2001042211A5 - - Google Patents

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Publication number
JP2001042211A5
JP2001042211A5 JP1999213373A JP21337399A JP2001042211A5 JP 2001042211 A5 JP2001042211 A5 JP 2001042211A5 JP 1999213373 A JP1999213373 A JP 1999213373A JP 21337399 A JP21337399 A JP 21337399A JP 2001042211 A5 JP2001042211 A5 JP 2001042211A5
Authority
JP
Japan
Prior art keywords
lens
lens group
projection
projection device
refractive power
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.)
Granted
Application number
JP1999213373A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001042211A (ja
JP4590044B2 (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP21337399A priority Critical patent/JP4590044B2/ja
Priority claimed from JP21337399A external-priority patent/JP4590044B2/ja
Publication of JP2001042211A publication Critical patent/JP2001042211A/ja
Publication of JP2001042211A5 publication Critical patent/JP2001042211A5/ja
Application granted granted Critical
Publication of JP4590044B2 publication Critical patent/JP4590044B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

JP21337399A 1999-07-28 1999-07-28 投射装置 Expired - Fee Related JP4590044B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21337399A JP4590044B2 (ja) 1999-07-28 1999-07-28 投射装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21337399A JP4590044B2 (ja) 1999-07-28 1999-07-28 投射装置

Publications (3)

Publication Number Publication Date
JP2001042211A JP2001042211A (ja) 2001-02-16
JP2001042211A5 true JP2001042211A5 (fr) 2006-09-07
JP4590044B2 JP4590044B2 (ja) 2010-12-01

Family

ID=16638124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21337399A Expired - Fee Related JP4590044B2 (ja) 1999-07-28 1999-07-28 投射装置

Country Status (1)

Country Link
JP (1) JP4590044B2 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4709411B2 (ja) * 2001-04-05 2011-06-22 マミヤ・デジタル・イメージング株式会社 レトロフォーカス型超広角レンズ
JP2003015033A (ja) 2001-06-28 2003-01-15 Minolta Co Ltd 投射光学系
US7009765B2 (en) * 2002-08-16 2006-03-07 Infocus Corporation Wide angle lens system having a distorted intermediate image
US7150537B2 (en) * 2002-08-16 2006-12-19 Infocus Corporation Projection television device and screen
CN100356227C (zh) * 2003-04-10 2007-12-19 精工爱普生株式会社 投射透镜和投影型图像显示装置
JP2004326079A (ja) 2003-04-10 2004-11-18 Seiko Epson Corp 投射レンズ及び投写型画像表示装置
US7390098B2 (en) 2003-09-30 2008-06-24 Matsushita Electric Industrial Co., Ltd. Projection lens, and projection display apparatus and rear projection display apparatus using the projection lens
WO2005057267A2 (fr) * 2003-12-05 2005-06-23 3M Innovative Properties Company Objectif de projection grand-angle et moteur optique de dispositif d'affichage par projection
JP4333401B2 (ja) 2004-02-19 2009-09-16 セイコーエプソン株式会社 小型ズームレンズ
EP1735660B1 (fr) * 2004-04-15 2012-06-13 Infocus Corporation Objectif de projection grand angle
JP4731938B2 (ja) * 2004-05-13 2011-07-27 株式会社リコー 画像表示装置・投射光学系
JP2005331649A (ja) 2004-05-19 2005-12-02 Nitto Kogaku Kk 投写用レンズシステムおよびプロジェクタ装置
US7400461B2 (en) 2004-09-29 2008-07-15 Nittoh Kogaku K.K. Lens holder and lens unit
JP4774224B2 (ja) * 2005-03-30 2011-09-14 富士フイルム株式会社 投射装置
JP4950645B2 (ja) * 2006-12-07 2012-06-13 キヤノン株式会社 光学系及びそれを有する撮像装置
JP5206067B2 (ja) * 2008-03-28 2013-06-12 セイコーエプソン株式会社 投射装置及び画像表示装置
JP6713639B2 (ja) * 2016-10-31 2020-06-24 株式会社ｎｉｔｔｏｈ 投射光学系及び投影装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05188287A (ja) * 1992-01-10 1993-07-30 Canon Inc レトロフォーカス型レンズ
JPH08227039A (ja) * 1995-02-21 1996-09-03 Copal Co Ltd ズームレンズ
KR100210247B1 (ko) * 1996-01-24 1999-07-15 윤종용 광화각 액정 프로젝션 렌즈 시스템
JPH11142731A (ja) * 1997-11-12 1999-05-28 Canon Inc 投射レンズ及びそれを有したプロジェクション装置

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