Title:
光学機器
Document Type and Number:
Japanese Patent JP5350029
Kind Code:
B2
Abstract:
An optical apparatus ensuring smooth driving control of an optical member is disclosed. The optical apparatus includes an optical member, a stepping motor configured to drive the optical member, a driving commander configured to generate driving pulses supplied to the stepping motor, a pulse count generator configured to count the driving pulses output from the driving commander, a position detector configured to detect a position of the optical member, and a pulse count presetter configured to replace, based on an output of the pulse count presetter and an output of the position detector, a pulse count output from the pulse count presetter with a pulse count corresponding to the output of the position detector.
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Inventors:
Takayuki Kikuchi
Application Number:
JP2009060686A
Publication Date:
November 27, 2013
Filing Date:
March 13, 2009
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/08
Domestic Patent References:
| JP11110045A | ||||
| JP4364399A | ||||
| JP2007178762A | ||||
| JP2004061459A |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa