Title:
SECTOR OPENING/CLOSING DEVICE FOR CAMERA
Document Type and Number:
Japanese Patent JP2002062561
Kind Code:
A
Abstract:
To stably set a lens aperture in a totally opened state in a bulb photographing mode.
A pulse for driving a sector 13 in an opening direction further even after the sector 13 reaches a position where the sector 13 totally opens the lens aperture O is outputted to a driving circuit 9. A sensor S is provided at the position where the sector 13 makes the aperture O in the totally opened state. When a signal is outputted from the sensor S, the pulse for driving the sector 13 in the opening direction is outputted to the driving circuit 9.
Inventors:
IWAMATSU YOSHIYUKI
Application Number:
JP2000247677A
Publication Date:
February 28, 2002
Filing Date:
August 17, 2000
Export Citation:
Assignee:
SEIKO PRECISION KK
International Classes:
G03B9/10; G03B9/28; (IPC1-7): G03B9/10; G03B9/28
Attorney, Agent or Firm:
Kazuko Matsuda