PHOTOGRAPHIC SHUTTER WITH ELECTRONIC TIME SETTING DEVICE

摘要

A photographic shutter includes a reciprocating drive element that places the shutter segments in the open and closed position and cooperates with an electronically controlled time setting device having an electromagnetic open-time-block operable to hold the drive element in the open position during the exposure time. The time setting device has a contact switch operable by a shutter release member to switch on the time setting device. Advantageously a nose is provided on the shutter release member which is engagable with a pin on the drive element during the opening movement of the segment drive element. The engagement of the nose with the pin prevents the return of the shutter release member for the period of time during which the drive element is blocked by the electromagnetic open-time-block.