Title:
IMAGING DEVICE AND METHOD OF CONTROLLING SHUTTER DEVICE
Document Type and Number:
Japanese Patent JP2020003566
Kind Code:
A
Abstract:
To certainly carry out phase returning of a shutter device with a few number of signals.SOLUTION: A shutter device includes: a shutter position detector 303 which detects a position of a shutter front-curtain 301; a shutter charge unit 400 which drives a shutter blade; a cam phase detector 417 which detects a cam gear 409 phase of the shutter charge unit 400; and a camera circuit control microcomputer 204. The camera circuit control microcomputer 204 carries out a return operation for returning the shutter blade to a travel abled state when the shutter blade is stopped in a travel disabled state. In the return operation, when it is determined that the shutter front-curtain 301 becomes the travel abled state on the basis of detection signals in the shutter position detector 303 and the cam phase detector 417 when a motor 405 for driving the cam gear 409 is driven with lower voltage than normal driving voltage, the voltage for driving the motor 405 is returned to the normal driving voltage.SELECTED DRAWING: Figure 7
Inventors:
YAMANA KAZUAKI
Application Number:
JP2018121068A
Publication Date:
January 09, 2020
Filing Date:
June 26, 2018
Export Citation:
Assignee:
CANON KK
International Classes:
G03B9/36
Attorney, Agent or Firm:
Another role Shigehisa