Shutter device for a photographic camera

摘要

A shutter device for a photographic camera uses an electromagnetic driving means for moving back and forth shutter blades to admit light rays to the film for a controlled length of time. In spite of the use of the electromagnetic driving means the shutter blades can be driven at the same and high speed. If the electromagnetic driving means is operatively connected to a light intensity measuring circuit, the program-control of exposure can be performed.