FR2440013A1 - Obturateur a diaphragme actionne electromagnetiquement - Google Patents

Obturateur a diaphragme actionne electromagnetiquement

Info

Publication number
FR2440013A1
FR2440013A1 FR7926174A FR7926174A FR2440013A1 FR 2440013 A1 FR2440013 A1 FR 2440013A1 FR 7926174 A FR7926174 A FR 7926174A FR 7926174 A FR7926174 A FR 7926174A FR 2440013 A1 FR2440013 A1 FR 2440013A1
Authority
FR
France
Prior art keywords
shutter
coil
ring
diaphragm
sector
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
FR7926174A
Other languages
English (en)
Other versions
FR2440013B1 (fr
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
Priority claimed from JP13082978A external-priority patent/JPS5557832A/ja
Priority claimed from JP14867778A external-priority patent/JPS5574523A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of FR2440013A1 publication Critical patent/FR2440013A1/fr
Application granted granted Critical
Publication of FR2440013B1 publication Critical patent/FR2440013B1/fr
Granted 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/18—More than two members
    • G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/087—Analogue circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)

Abstract

LE MECANISME DE L'OBTURATEUR A DIAPHRAGME, FONCTIONNANT GRACE A L'ACTION D'UNE FORCE ELECTROMAGNETIQUE, COMPORTE, SUR UNE BAGUE EN SECTEUR 4 DU MECANISME DE L'OBTURATEUR, UNE BOBINE, OU CONFIGURATION IMPRIMEE AYANT UNE FONCTION EQUIVALENTE 5. ALORS QU'UN CHAMP MAGNETIQUE EST APPLIQUE A LA BOBINE, UN COURANT EST AMENE A CIRCULER DANS LA BOBINE DANS UNE DIRECTION PRESCRITE, A LA SUITE DE QUOI, LA BAGUE 4 EST MISE EN ROTATION. IL EST EN OUTRE PREVU UN MECANISME A DIAPHRAGME DE MESURE DE LUMIERE AUXILIAIRE 10 UTILISANT UN TROU 5 DANS LA BAGUE ET LIE AU DIAPHRAGME D'EXPOSITION 12 DES PALES D'OBTURATEUR 9 POUR COMMANDER L'OBTURATEUR. POUR AMELIORER LA PRECISION DE LA COMMANDE A PROGRAMME DE L'OBTURATEUR, LA BAGUE EN FORME DE SECTEUR 4 EST TOUJOURS SOLLICITEE PAR DES RESSORTS 1 DE FACON A SE DEPLACER DANS LE SENS DE FERMETURE DE L'OBTURATEUR.
FR7926174A 1978-10-23 1979-10-22 Obturateur a diaphragme actionne electromagnetiquement Granted FR2440013A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13082978A JPS5557832A (en) 1978-10-23 1978-10-23 Electromagnetic iris shutter
JP14867778A JPS5574523A (en) 1978-12-01 1978-12-01 Electromagnetically driven aperture shutter

Publications (2)

Publication Number Publication Date
FR2440013A1 true FR2440013A1 (fr) 1980-05-23
FR2440013B1 FR2440013B1 (fr) 1984-11-16

Family

ID=26465857

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926174A Granted FR2440013A1 (fr) 1978-10-23 1979-10-22 Obturateur a diaphragme actionne electromagnetiquement

Country Status (3)

Country Link
US (1) US4390262A (fr)
DE (1) DE2942636C2 (fr)
FR (1) FR2440013A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054929A1 (fr) * 1980-12-22 1982-06-30 EASTMAN KODAK COMPANY (a New Jersey corporation) Procédé pour la commande d'un moyen d'actionnement électromécanique dans un appareil photographique, ainsi qu'un tel appareil

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964974A (ja) * 1982-10-06 1984-04-13 Canon Inc 撮像装置
US4531820A (en) * 1983-06-22 1985-07-30 Polaroid Corporation Electromagnetic actuator generating equal and opposing force vectors
JPS644096Y2 (fr) * 1985-10-31 1989-02-02
JPH03228039A (ja) * 1989-11-16 1991-10-09 Fuji Photo Film Co Ltd 絞りの電磁駆動装置
US5493511A (en) * 1992-12-08 1996-02-20 Administrator, National Aeronautics And Space Administration High speed thin plate fatigue crack monitor
JP2000347240A (ja) * 1999-03-31 2000-12-15 Seiko Precision Inc カメラ用シャッタ
JP2000347244A (ja) * 1999-03-31 2000-12-15 Seiko Precision Inc カメラ用シャッタ
JP2003519410A (ja) * 1999-12-30 2003-06-17 アプライド、サイエンス、フィクシャン、インク 可視光を使用してデジタルフィルムを現像するための改良されたシステムおよび方法
US6728045B2 (en) 2000-09-22 2004-04-27 Pentax Corporation Zoom lens barrel
US6853503B2 (en) 2000-09-22 2005-02-08 Pentax Corporation Eccentricity-prevention mechanism for a pair of lens-supporting rings
US6798582B2 (en) 2000-09-22 2004-09-28 Pentax Corporation Reduction gear mechanism
US6707620B2 (en) 2000-09-22 2004-03-16 Pentax Corporation Zoom lens mechanism
US6807016B2 (en) * 2000-09-22 2004-10-19 Pentax Corporation Lens barrel
US6680804B2 (en) 2000-09-22 2004-01-20 Pentax Corporation Zoom lens mechanism
US6871017B2 (en) 2000-09-22 2005-03-22 Pentax Corporation Lens drive control apparatus for zoom lens system having a switching lens group
US6795251B2 (en) 2000-09-22 2004-09-21 Pentax Corporation Lens drive mechanism
US6891668B2 (en) 2000-09-22 2005-05-10 Pentax Corporation Lens barrel
US6661586B2 (en) 2000-09-22 2003-12-09 Pentax Corporation Ring member shift mechanism and lens group shift mechanism
US7884522B1 (en) 2004-10-25 2011-02-08 Novatorque, Inc. Stator and rotor-stator structures for electrodynamic machines
US6657793B2 (en) 2000-09-27 2003-12-02 Pentax Corporation Lens barrel
JP2002277930A (ja) * 2001-03-21 2002-09-25 Asahi Optical Co Ltd レンズバリヤを備えたカメラ
JP2002277712A (ja) 2001-03-21 2002-09-25 Asahi Optical Co Ltd レンズガイド機構
JP2002277926A (ja) * 2001-03-21 2002-09-25 Asahi Optical Co Ltd 遮光部材開閉機構
JP2002277924A (ja) * 2001-03-21 2002-09-25 Asahi Optical Co Ltd レンズシャッタ機構
JP2002277925A (ja) * 2001-03-21 2002-09-25 Asahi Optical Co Ltd レンズシャッタ機構
JP2002277923A (ja) 2001-03-22 2002-09-25 Asahi Optical Co Ltd レンズシャッタのｆｐｃ配設構造及びｆｐｃ配設構造
JP3742562B2 (ja) 2001-03-22 2006-02-08 ペンタックス株式会社 レンズ鏡筒のストッパ構造
JP2002277708A (ja) * 2001-03-22 2002-09-25 Asahi Optical Co Ltd レンズブロック
JP3679724B2 (ja) * 2001-03-22 2005-08-03 ペンタックス株式会社 ズームレンズ鏡筒
US7071591B2 (en) * 2003-01-02 2006-07-04 Covi Technologies Electromagnetic circuit and servo mechanism for articulated cameras
US20040169434A1 (en) * 2003-01-02 2004-09-02 Washington Richard G. Slip ring apparatus
JP4435613B2 (ja) * 2003-10-14 2010-03-24 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 版の画像付け装置
US7982350B2 (en) 2004-10-25 2011-07-19 Novatorque, Inc. Conical magnets and rotor-stator structures for electrodynamic machines
US8283832B2 (en) 2004-10-25 2012-10-09 Novatorque, Inc. Sculpted field pole members and methods of forming the same for electrodynamic machines
US8330316B2 (en) 2011-03-09 2012-12-11 Novatorque, Inc. Rotor-stator structures including boost magnet structures for magnetic regions in rotor assemblies disposed external to boundaries of conically-shaped spaces
US7061152B2 (en) * 2004-10-25 2006-06-13 Novatorque, Inc. Rotor-stator structure for electrodynamic machines
US8471425B2 (en) 2011-03-09 2013-06-25 Novatorque, Inc. Rotor-stator structures including boost magnet structures for magnetic regions having angled confronting surfaces in rotor assemblies
US7294948B2 (en) * 2004-10-25 2007-11-13 Novatorque, Inc. Rotor-stator structure for electrodynamic machines
US8543365B1 (en) 2004-10-25 2013-09-24 Novatorque, Inc. Computer-readable medium, a method and an apparatus for designing and simulating electrodynamic machines implementing conical and cylindrical magnets
US9093874B2 (en) 2004-10-25 2015-07-28 Novatorque, Inc. Sculpted field pole members and methods of forming the same for electrodynamic machines
JP2009294342A (ja) * 2008-06-04 2009-12-17 Olympus Corp 光調節装置
JP5604246B2 (ja) * 2010-09-28 2014-10-08 日本電産コパル株式会社 カメラ用羽根駆動装置
US20140333399A1 (en) * 2013-05-08 2014-11-13 Franklin Limberg Pseudo mechanical energy generator
KR102139767B1 (ko) * 2018-08-22 2020-07-31 삼성전기주식회사 조리개 모듈 및 이를 포함하는 카메라 모듈
WO2020258096A1 (fr) * 2019-06-26 2020-12-30 深圳市大疆创新科技有限公司 Moteur, dispositif obturateur et dispositif de photographie

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092002A (en) * 1960-09-23 1963-06-04 Frenk Helmuth Shutter for photographic apparatus
DE2530392A1 (de) * 1974-09-23 1976-04-08 Jenoptik Jena Gmbh Springblendeneinrichtung an fotoobjektiven
US4012750A (en) * 1971-11-11 1977-03-15 Prontor-Werk Alfred Gauthier Gmbh Camera shutter with diaphragm and electro-magnetic drive for diaphragm

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA635381A (en) * 1962-01-30 Polaroid Corporation Photoresponsive exposure control mechanism
DE6917120U (de) * 1969-04-28 1970-01-22 Compur Werk Gmbh & Co Photographischer verschluss mit elektromagnetischem antrieb
US3975744A (en) * 1974-08-05 1976-08-17 Polaroid Corporation Automatic exposure control system
JPS51138437A (en) * 1975-05-26 1976-11-30 Fuji Photo Film Co Ltd Device for driving optical blades

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092002A (en) * 1960-09-23 1963-06-04 Frenk Helmuth Shutter for photographic apparatus
US4012750A (en) * 1971-11-11 1977-03-15 Prontor-Werk Alfred Gauthier Gmbh Camera shutter with diaphragm and electro-magnetic drive for diaphragm
DE2530392A1 (de) * 1974-09-23 1976-04-08 Jenoptik Jena Gmbh Springblendeneinrichtung an fotoobjektiven

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054929A1 (fr) * 1980-12-22 1982-06-30 EASTMAN KODAK COMPANY (a New Jersey corporation) Procédé pour la commande d'un moyen d'actionnement électromécanique dans un appareil photographique, ainsi qu'un tel appareil

Also Published As

Publication number Publication date
FR2440013B1 (fr) 1984-11-16
DE2942636A1 (de) 1980-06-04
DE2942636C2 (de) 1984-12-13
US4390262A (en) 1983-06-28

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