DE69230874D1 - Optischer Projektionsapparat mit einstellbarer Blende - Google Patents

Optischer Projektionsapparat mit einstellbarer Blende

Info

Publication number
DE69230874D1
DE69230874D1 DE69230874T DE69230874T DE69230874D1 DE 69230874 D1 DE69230874 D1 DE 69230874D1 DE 69230874 T DE69230874 T DE 69230874T DE 69230874 T DE69230874 T DE 69230874T DE 69230874 D1 DE69230874 D1 DE 69230874D1
Authority
DE
Germany
Prior art keywords
adjustable aperture
optical projector
projector
optical
aperture
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
DE69230874T
Other languages
English (en)
Other versions
DE69230874T2 (de
Inventor
Yoshihiro Ishibe
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69230874D1 publication Critical patent/DE69230874D1/de
Application granted granted Critical
Publication of DE69230874T2 publication Critical patent/DE69230874T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
DE69230874T 1991-10-16 1992-10-15 Optischer Projektionsapparat mit einstellbarer Blende Expired - Fee Related DE69230874T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3298446A JP2550814B2 (ja) 1991-10-16 1991-10-16 投影光学装置

Publications (2)

Publication Number Publication Date
DE69230874D1 true DE69230874D1 (de) 2000-05-11
DE69230874T2 DE69230874T2 (de) 2000-10-12

Family

ID=17859819

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69230874T Expired - Fee Related DE69230874T2 (de) 1991-10-16 1992-10-15 Optischer Projektionsapparat mit einstellbarer Blende

Country Status (4)

Country Link
US (1) US5361107A (de)
EP (1) EP0537731B1 (de)
JP (1) JP2550814B2 (de)
DE (1) DE69230874T2 (de)

Families Citing this family (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
US5924783A (en) * 1997-07-24 1999-07-20 Raychem Corporation System for controlling contrast in projection displays
JP2000111793A (ja) * 1998-09-30 2000-04-21 Fuji Xerox Co Ltd 結像光学系および画像形成装置
US7154676B2 (en) * 2002-03-01 2006-12-26 Carl Zeiss Smt A.G. Very-high aperture projection objective
CA2540516C (en) * 2003-09-30 2010-02-09 Matsushita Electric Industrial Co., Ltd. Projection lens, and projection display apparatus and rear projection display apparatus using the projection lens
JP2007248770A (ja) * 2006-03-15 2007-09-27 Fujinon Corp ズームレンズ装置
JP2014194493A (ja) * 2013-03-29 2014-10-09 Funai Electric Co Ltd プロジェクタおよびヘッドアップディスプレイ装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774703A (en) * 1980-10-28 1982-05-11 Asahi Optical Co Ltd Aperture structure of zoom lens for facsimile
US4619508A (en) * 1984-04-28 1986-10-28 Nippon Kogaku K. K. Illumination optical arrangement
JPS61122623A (ja) * 1984-11-19 1986-06-10 Canon Inc 投影装置
US4939630A (en) * 1986-09-09 1990-07-03 Nikon Corporation Illumination optical apparatus
DE3750174T2 (de) * 1986-10-30 1994-11-17 Canon Kk Belichtungseinrichtung.
JPS6425115A (en) * 1987-07-22 1989-01-27 Minolta Camera Kk Projection lens system
JP2623620B2 (ja) * 1987-12-19 1997-06-25 ミノルタ株式会社 ズームレンズ系
JP2699433B2 (ja) * 1988-08-12 1998-01-19 株式会社ニコン 投影型露光装置及び投影露光方法
US5038168A (en) * 1989-08-19 1991-08-06 Konica Corporation Photographic printing apparatus
JPH0385864A (ja) * 1989-08-29 1991-04-11 Canon Inc 画像読取装置
JPH0384514A (ja) * 1989-08-29 1991-04-10 Canon Inc 照明装置

Also Published As

Publication number Publication date
US5361107A (en) 1994-11-01
JP2550814B2 (ja) 1996-11-06
JPH05107503A (ja) 1993-04-30
EP0537731A1 (de) 1993-04-21
EP0537731B1 (de) 2000-04-05
DE69230874T2 (de) 2000-10-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee