Focal plane shutter

Details Focal plane shutter Focal plane shutter

1978-03-20

1979-07-31

Gonzales, John

G03B 940

Patent

active

041628403

ABSTRACT:
A focal plane shutter comprising a pair of upper arms rotatably supported on a shutter base plate and arranged with a spacing between them, a pair of lower arms overlapped respectively on said pair of upper arms with a spacing, three main shutter blades respectively supported by said upper arms so as to have overlapped portions even when developed between the respective pairs of upper arms and lower arms, and two auxiliary shutter blades respectively supported by the lower arms so as to overlap on the above mentioned overlapped portions when developed between the respective pairs of the upper arms and lower arms, in order to make the entire shutter device or particularly the dimensions in the vertical direction smaller. Tail portions are formed respectively at the free ends of the main shutter in the middle and the auxiliary shutter blades.

REFERENCES:
patent: 4081810 (1978-03-01), Onda et al.

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