Large diameter photographic shutter

摘要: A photographic shutter having a large aperture (about 2 1/2 inches) that can be driven at relatively high speed by an electromechanical actuator. The has two blades of very thin sheet material are reciprocated in opposition to each other translation only. have integrally formed flanges stiffen them and provide the strength needed keep from buckling. actuator is connected through long levers achieve desired length travel with adequate allowance for rotational output motion