JP7301606B2 - 光量調節装置および光学機器 - Google Patents

光量調節装置および光学機器 Download PDF

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Publication number
JP7301606B2
JP7301606B2 JP2019103418A JP2019103418A JP7301606B2 JP 7301606 B2 JP7301606 B2 JP 7301606B2 JP 2019103418 A JP2019103418 A JP 2019103418A JP 2019103418 A JP2019103418 A JP 2019103418A JP 7301606 B2 JP7301606 B2 JP 7301606B2
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Japan
Prior art keywords
cam
base member
blade
light amount
light
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JP2019103418A
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English (en)
Japanese (ja)
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JP2020197620A5 (enExample
JP2020197620A (ja
Inventor
勝彦 佐藤
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
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Canon Inc
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Application filed by Canon Inc filed Critical Canon Inc
Priority to JP2019103418A priority Critical patent/JP7301606B2/ja
Priority to US16/888,933 priority patent/US11073742B2/en
Publication of JP2020197620A publication Critical patent/JP2020197620A/ja
Publication of JP2020197620A5 publication Critical patent/JP2020197620A5/ja
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    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Diaphragms For Cameras (AREA)
  • Studio Devices (AREA)
JP2019103418A 2019-06-03 2019-06-03 光量調節装置および光学機器 Active JP7301606B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019103418A JP7301606B2 (ja) 2019-06-03 2019-06-03 光量調節装置および光学機器
US16/888,933 US11073742B2 (en) 2019-06-03 2020-06-01 Light amount adjusting apparatus and optical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019103418A JP7301606B2 (ja) 2019-06-03 2019-06-03 光量調節装置および光学機器

Publications (3)

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JP2020197620A JP2020197620A (ja) 2020-12-10
JP2020197620A5 JP2020197620A5 (enExample) 2022-06-07
JP7301606B2 true JP7301606B2 (ja) 2023-07-03

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ID=73549859

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JP2019103418A Active JP7301606B2 (ja) 2019-06-03 2019-06-03 光量調節装置および光学機器

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US (1) US11073742B2 (enExample)
JP (1) JP7301606B2 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3127300B1 (fr) * 2021-09-21 2023-12-15 Thales Sa Diaphragme à iris elliptique sans rotation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020170585A1 (ja) 2019-02-22 2020-08-27 株式会社ニコン 絞り機構及び光学機器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264178A (en) * 1978-12-27 1981-04-28 Nippon Kogaku K.K. Diaphragm device of a photographic lens
JPS57167419U (enExample) * 1981-04-16 1982-10-21
JPH0710335Y2 (ja) 1989-03-17 1995-03-08 株式会社コパル ステップモータを駆動源とする口径調節装置
JPH0413931U (enExample) * 1990-05-23 1992-02-04
JPH0543136U (ja) * 1991-09-05 1993-06-11 株式会社コパル カメラ用絞り装置
JP3699545B2 (ja) * 1996-12-02 2005-09-28 ペンタックス株式会社 レンズの測光情報伝達装置
JP5015225B2 (ja) * 2009-11-20 2012-08-29 セイコープレシジョン株式会社 絞り装置
DE102011051120B9 (de) * 2011-06-16 2012-08-30 Jos. Schneider Optische Werke Gmbh Kamera-Objektiv
JP6584070B2 (ja) * 2014-12-17 2019-10-02 キヤノン株式会社 レンズ鏡筒および光学機器
US10534241B2 (en) * 2016-03-01 2020-01-14 Sony Corporation Blade opening/closing apparatus and image pickup apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020170585A1 (ja) 2019-02-22 2020-08-27 株式会社ニコン 絞り機構及び光学機器

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US11073742B2 (en) 2021-07-27
JP2020197620A (ja) 2020-12-10
US20200379316A1 (en) 2020-12-03

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