Invention Grant
US08085311B2 Optical apparatus with motor drive control selected based on rotor position sensor or determined time interval
有权
基于转子位置传感器或确定的时间间隔选择电机驱动控制的光学设备
- Patent Title: Optical apparatus with motor drive control selected based on rotor position sensor or determined time interval
- Patent Title (中): 基于转子位置传感器或确定的时间间隔选择电机驱动控制的光学设备
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Application No.: US12358669Application Date: 2009-01-23
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Publication No.: US08085311B2Publication Date: 2011-12-27
- Inventor: Kousuke Kiyamura , Hiromu Yasuda , Chikara Aoshima
- Applicant: Kousuke Kiyamura , Hiromu Yasuda , Chikara Aoshima
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2008-015531 20080125
- Main IPC: H04N5/225
- IPC: H04N5/225 ; H04N5/232 ; G03B13/00 ; G03B3/10 ; G03B13/34
Abstract:
An optical apparatus having a recording mode that is switchable between motion picture recording and still picture recording includes an optical element, a motor that includes a rotor having a magnet, and a stator having a coil configured to provide a rotational force to the magnet, the motor being configured to drive the optical element, a position sensor configured to detect a position of the rotor of the motor, and a driving circuit configured to select, in accordance with the recording mode, first driving configured to switch an electrization to the coil in the motor in accordance with a determined time interval, or second driving configured to switch an electrization to the coil in the motor in accordance with an output of the position senor.
Public/Granted literature
- US20090189990A1 OPTICAL APPARATUS Public/Granted day:2009-07-30
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