Leak-proof light intercepting device

Details Leak-proof light intercepting device Leak-proof light intercepting device

1975-06-12

1976-11-30

Peters, Jr., Joseph F.

354288, G03B 142, G03B 1700

Patent

active

039952967

ABSTRACT:
A light-intercepting member for preventing passage of transmitted light through those parts other than the opening of a focal plane shutter in a camera from reaching the surface of photographic film, is formed of a thin film of rubber and a cloth curtain of synthetic material adhered to at least one surface of the thin rubber film, is positioned in parallel with the travelling direction of the focal plane shutter, and is caused to contact the shutter curtain surface to intercept light other than light effective for photographing.

REFERENCES:
patent: 1003536 (1911-11-01), Spinks
patent: 2522347 (1950-09-01), Conviser et al.
patent: 3537376 (1970-11-01), Fleming

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