Focal-plane shutter

Details Focal-plane shutter Focal-plane shutter

1989-05-02

1990-09-04

Mathews, A. A.

354249, G03B 940

Patent

active

049548603

ABSTRACT:
A focal-plane shutter for a camera includes two shutter blades each of which comprises two opaque plates. At least one of the two plates has a slit and is held at two points by two arms such that the plates move like a pantograph. The arms are pivotally mounted by eccentric pins to provide for adjusting the parallelism of the blades.

REFERENCES:
patent: 2975689 (1961-03-01), Chatani
patent: 4141638 (1979-02-01), Ooba
patent: 4486084 (1984-12-01), Sato et al.
patent: 4560265 (1985-12-01), Hashimoto
patent: 4571045 (1986-02-01), Uematsu
patent: 4797699 (1989-01-01), Nemoto et al.

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