Camera shutter having bobbin driven blades

Details Camera shutter having bobbin driven blades Camera shutter having bobbin driven blades

1982-01-21

1983-11-15

Mathews, A. A.

354235, 354241, G03B 908, G03B 930

Patent

active

044152515

ABSTRACT:
A light controlling system for photographic apparatus in which a pair of cooperating blades are defined by linear flights of a folded belt formed of an opaque film and having a central portion trained about a fixed axis guide roller with the free ends of the belt flights connected to reciprocable, coil carrying bobbins supported in a fixed armature frame. The bobbins are alternately driven in opposite directions to effect operative movement of the blades. An additional pair of bobbins may be supported on the frame for operating auxiliary driven components such as an adjustable aperture stop where the aforementioned belt provides simply shutter blades.

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patent: 4150890 (1979-04-01), Nakagawa et al.
patent: 4171897 (1979-10-01), Fujita et al.

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