Title:
駆動装置、光量調節装置、および、レンズ駆動装置
Document Type and Number:
Japanese Patent JP4235486
Kind Code:
B2
Abstract:
A feature of the present invention resides in that when a value of a ratio of a central angle of an outer magnetic pole portion to a central angle of each magnetized pole of a magnet portion is referred to as Y, and a value of a ratio of a thickness of the magnet portion in a diameter direction to a circumferential length of each magnetized pole of the magnet portion is referred to as X, the following condition is satisfied:
Inventors:
Qingdao Lieutenant
Application Number:
JP2003132597A
Publication Date:
March 11, 2009
Filing Date:
May 12, 2003
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B9/02; G03B9/10; G03B7/10; G03B9/08; G03B9/26; H02K26/00; H04N5/232; H04N5/238
Domestic Patent References:
| JP2002049076A | ||||
| JP2002090805A |
Attorney, Agent or Firm:
Minoru Nakamura
Previous Patent: ハイブリッド電気自動車のための油圧診断方法
Next Patent: METHOD AND DEVICE FOR DETECTING TIMING PULSE FOR DESCRUMBLE
Next Patent: METHOD AND DEVICE FOR DETECTING TIMING PULSE FOR DESCRUMBLE