JP4250516B2 - 光量調節装置、光学装置および撮影装置 - Google Patents

光量調節装置、光学装置および撮影装置 Download PDF

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Publication number
JP4250516B2
JP4250516B2 JP2003408507A JP2003408507A JP4250516B2 JP 4250516 B2 JP4250516 B2 JP 4250516B2 JP 2003408507 A JP2003408507 A JP 2003408507A JP 2003408507 A JP2003408507 A JP 2003408507A JP 4250516 B2 JP4250516 B2 JP 4250516B2
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JP
Japan
Prior art keywords
opening
light shielding
optical axis
light
optical
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
JP2003408507A
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English (en)
Japanese (ja)
Other versions
JP2005172883A (ja
JP2005172883A5 (enExample
Inventor
智基 長谷川
昭永 堀内
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
Priority to JP2003408507A priority Critical patent/JP4250516B2/ja
Priority to US10/991,531 priority patent/US20050123290A1/en
Publication of JP2005172883A publication Critical patent/JP2005172883A/ja
Publication of JP2005172883A5 publication Critical patent/JP2005172883A5/ja
Application granted granted Critical
Publication of JP4250516B2 publication Critical patent/JP4250516B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/18—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with light-reducing "factor" of filter or other obturator used with or on the lens of the camera
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • G03B9/06—Two or more co-operating pivoted blades, e.g. iris type
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • G03B9/07—Diaphragms with means for presetting the diaphragm

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Diaphragms For Cameras (AREA)
JP2003408507A 2003-12-08 2003-12-08 光量調節装置、光学装置および撮影装置 Expired - Fee Related JP4250516B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2003408507A JP4250516B2 (ja) 2003-12-08 2003-12-08 光量調節装置、光学装置および撮影装置
US10/991,531 US20050123290A1 (en) 2003-12-08 2004-11-19 Light quantity regulator, optical apparatus and photographing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003408507A JP4250516B2 (ja) 2003-12-08 2003-12-08 光量調節装置、光学装置および撮影装置

Publications (3)

Publication Number Publication Date
JP2005172883A JP2005172883A (ja) 2005-06-30
JP2005172883A5 JP2005172883A5 (enExample) 2007-02-01
JP4250516B2 true JP4250516B2 (ja) 2009-04-08

Family

ID=34631781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003408507A Expired - Fee Related JP4250516B2 (ja) 2003-12-08 2003-12-08 光量調節装置、光学装置および撮影装置

Country Status (2)

Country Link
US (1) US20050123290A1 (enExample)
JP (1) JP4250516B2 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4273008B2 (ja) * 2004-01-28 2009-06-03 キヤノン株式会社 光量調節装置および光学機器
JP3983235B2 (ja) * 2004-08-20 2007-09-26 ニスカ株式会社 光量調整装置
JP4769478B2 (ja) * 2005-04-22 2011-09-07 キヤノン株式会社 光学機器
TWM346838U (en) * 2008-06-11 2008-12-11 Union Plus Technology Co Ltd Camera Shutter
CN106597775A (zh) * 2017-02-27 2017-04-26 中山联合光电科技股份有限公司 一种类圆形光圈结构
CN108896191A (zh) * 2018-08-03 2018-11-27 烟台艾睿光电科技有限公司 一种用于红外热成像仪的光阑及红外热成像仪

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4884091A (en) * 1987-10-08 1989-11-28 Nippon Seimitsu Kogyo Kabushiki Kaisha Exposure control device in a camera
CA2058396C (en) * 1990-12-25 1995-05-30 Osamu Sato Light-quantity control device
US5907733A (en) * 1997-11-21 1999-05-25 Nisca Corporation Exposing aperture device for a camera
JP4200408B2 (ja) * 1999-10-21 2008-12-24 ソニー株式会社 撮像装置

Also Published As

Publication number Publication date
JP2005172883A (ja) 2005-06-30
US20050123290A1 (en) 2005-06-09

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