Patent ID: 6767145
Filing Date: 2004-07-27
Classification: G03B

Abstract:
A lens shutter for cameras, comprising:two base plates in which a blade chamber is provided between said two base plates and apertures of said two base plates are superposed to provide a circular exposure aperture; a shutter blade located in said blade chamber to perform an opening and closing operation of said exposure aperture; a first motor mounted to one of said base plates outside said blade chamber so that an output port extends to said blade chamber to cause said shutter blade to perform said opening and closing operation; light-amount control device located in said blade chamber constructed and arranged to perform introducing and removing operations with respect to said exposure aperture; and a second motor mounted to one of said base plates outside said blade chamber so that an output port extends to said blade chamber to cause said light-amount control device constructed and arranged to perform said introducing and removing operations, wherein said light-mount control device is located so that a part thereof always overlaps said shutter blade adjacent thereto in any operating condition.