Patent ID: 6106165
Filing Date: 2000-08-22
Classification: G03B

Abstract:
A focal plane shutter blade device of a camera to form an exposure slit during a film exposure operation of an aperture, the camera having an autofocusing device that has a top portion, the focal plane shutter device comprising:a film passage through which film is transferred; anda front blind to cover the aperture prior to the exposure operation, having a front slit forming blade that forms an exposure slit, and a plurality of front covering blades that do not form the exposure slit during the exposure operation,wherein during the exposure operation, the front blind moves upward, and wherein prior to the exposure operation, the front slit forming blade is positioned below the aperture, between the auto focusing device and the film passage, and the front slit forming blade is not a light barrier of the aperture prior to exposure.