JP2002107792A - 光量調節装置 - Google Patents

光量調節装置

Info

Publication number
JP2002107792A
JP2002107792A JP2000303431A JP2000303431A JP2002107792A JP 2002107792 A JP2002107792 A JP 2002107792A JP 2000303431 A JP2000303431 A JP 2000303431A JP 2000303431 A JP2000303431 A JP 2000303431A JP 2002107792 A JP2002107792 A JP 2002107792A
Authority
JP
Japan
Prior art keywords
light amount
amount adjusting
adjusting device
rotor magnet
coil
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.)
Pending
Application number
JP2000303431A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002107792A5 (enrdf_load_stackoverflow
Inventor
Toshiaki Kawanishi
川西　　利明
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 JP2000303431A priority Critical patent/JP2002107792A/ja
Publication of JP2002107792A publication Critical patent/JP2002107792A/ja
Publication of JP2002107792A5 publication Critical patent/JP2002107792A5/ja
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Stepping Motors (AREA)
  • Diaphragms For Cameras (AREA)
  • Studio Devices (AREA)
JP2000303431A 2000-10-03 2000-10-03 光量調節装置 Pending JP2002107792A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000303431A JP2002107792A (ja) 2000-10-03 2000-10-03 光量調節装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000303431A JP2002107792A (ja) 2000-10-03 2000-10-03 光量調節装置

Publications (2)

Publication Number Publication Date
JP2002107792A true JP2002107792A (ja) 2002-04-10
JP2002107792A5 JP2002107792A5 (enrdf_load_stackoverflow) 2007-11-15

Family

ID=18784632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000303431A Pending JP2002107792A (ja) 2000-10-03 2000-10-03 光量調節装置

Country Status (1)

Country Link
JP (1) JP2002107792A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6657335B2 (en) * 2000-04-07 2003-12-02 Yazaki Corporation Stepping motor and driving apparatus having separate position detection coil
KR100810114B1 (ko) 2006-07-28 2008-03-06 에스인포텍(주) 셔터기능을 갖는 조리개장치
WO2008032520A1 (fr) * 2006-09-11 2008-03-20 Seiko Precision Inc. Dispositif d'ajustement de quantité de lumière
CN100468180C (zh) * 2003-09-19 2009-03-11 佳能株式会社 驱动装置及装备该驱动装置的光通量调节装置
JP2010039030A (ja) * 2008-08-01 2010-02-18 Olympus Corp 光調節装置の駆動方法、光調節装置の制御装置、及び光調節装置
JP2010139664A (ja) * 2008-12-10 2010-06-24 Canon Electronics Inc 光量調節装置
JP2013125192A (ja) * 2011-12-15 2013-06-24 Mitsubishi Electric Corp 投射型画像表示装置、可変絞り装置の組み立て方法、可変絞り装置の原点調整方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237428A (en) * 1975-09-19 1977-03-23 West Electric Co Ltd Automatic exposure control device
JPH1164924A (ja) * 1997-08-25 1999-03-05 Copal Co Ltd カメラ用羽根駆動装置
JP2000039646A (ja) * 1998-07-23 2000-02-08 Canon Inc 絞り装置およびこれを備えた光学機器
JP2000050607A (ja) * 1998-07-30 2000-02-18 Canon Inc 回転位置制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237428A (en) * 1975-09-19 1977-03-23 West Electric Co Ltd Automatic exposure control device
JPH1164924A (ja) * 1997-08-25 1999-03-05 Copal Co Ltd カメラ用羽根駆動装置
JP2000039646A (ja) * 1998-07-23 2000-02-08 Canon Inc 絞り装置およびこれを備えた光学機器
JP2000050607A (ja) * 1998-07-30 2000-02-18 Canon Inc 回転位置制御装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6657335B2 (en) * 2000-04-07 2003-12-02 Yazaki Corporation Stepping motor and driving apparatus having separate position detection coil
CN100468180C (zh) * 2003-09-19 2009-03-11 佳能株式会社 驱动装置及装备该驱动装置的光通量调节装置
KR100810114B1 (ko) 2006-07-28 2008-03-06 에스인포텍(주) 셔터기능을 갖는 조리개장치
WO2008032520A1 (fr) * 2006-09-11 2008-03-20 Seiko Precision Inc. Dispositif d'ajustement de quantité de lumière
JP2008065254A (ja) * 2006-09-11 2008-03-21 Seiko Precision Inc 光量調節装置
US7845866B2 (en) 2006-09-11 2010-12-07 Seiko Precision Inc. Light quantity control device
JP2010039030A (ja) * 2008-08-01 2010-02-18 Olympus Corp 光調節装置の駆動方法、光調節装置の制御装置、及び光調節装置
JP2010139664A (ja) * 2008-12-10 2010-06-24 Canon Electronics Inc 光量調節装置
JP2013125192A (ja) * 2011-12-15 2013-06-24 Mitsubishi Electric Corp 投射型画像表示装置、可変絞り装置の組み立て方法、可変絞り装置の原点調整方法

Similar Documents

Publication Publication Date Title
US8035327B2 (en) Motor drive unit and optical apparatus
JP2010098922A5 (ja) 駆動装置
JP4164326B2 (ja) ステッピングモータの制御方法および光量調節装置
JP2002107792A (ja) 光量調節装置
EP1006646B1 (en) Actuator
JP4874474B2 (ja) ステッピングモータ
JP2019071028A (ja) モータ制御装置、モータ制御方法、及び撮像装置
JP5322501B2 (ja) 駆動装置及び電子機器
JP4181955B2 (ja) 光量調節装置及びカメラ
JP5328187B2 (ja) 羽根駆動装置および撮像装置
JP2000050607A (ja) 回転位置制御装置
JP4194199B2 (ja) 光量調節装置および撮像装置
JP2004109531A (ja) 光量調節装置および撮像装置
JP2000152591A (ja) アクチュエータ
JPH062468Y2 (ja) 小型ステップモ−タ
JP5828678B2 (ja) モータ制御装置およびモータ駆動装置
JP2001154234A5 (enrdf_load_stackoverflow)
JP3590121B2 (ja) ブラシレスモータ
JP2004012938A (ja) 光量調節装置およびこれを備えた撮像装置
JP2003330062A (ja) 光量調整装置
JP2003309940A (ja) 電磁駆動装置、及び光量調節装置
JP2688579B2 (ja) ステッピングモータ駆動の絞り羽根制御装置
JP2002107791A (ja) ステッピングモータ駆動装置およびこれを備えた装置、光量調節装置、光学機器
JP3105557B2 (ja) モータ装置
JP2004029175A (ja) 光量調節装置及びカメラのレンズ装置

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071001

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071001

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20081023

RD05 Notification of revocation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7425

Effective date: 20081201

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100303

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100309

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100506

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100629