Focal plane shutter

Details Focal plane shutter Focal plane shutter

1997-05-30

1998-10-20

Mathews, A. A.

Photography

Camera detail

Shutter

396484, 396487, G03B 940

Patent

active

058261249

ABSTRACT:
A focal plane shutter comprises a base plate having a shutter opening, at least one shutter sector group having sectors, and arms pivotally connected to and supporting the sectors for displacing the sectors relative to the shutter opening. At least a first one of the sectors comprises an intermediate sector interposed between a second one of the sectors and one of the arms connected to and supporting the second sector. The intermediate sector has an edge portion disposed proximate a connection of the second sector and the arm connected to and supporting the second sector. At least the edge portion of the intermediate sector is thinner than other portions thereof to facilitate smooth displacement of the sectors relative to the shutter opening without any obstruction.

REFERENCES:
patent: 4571045 (1986-02-01), Uematsu
patent: 4660952 (1987-04-01), Toyoda et al.
patent: 5323205 (1994-06-01), Matsubara et al.
patent: 5646149 (1997-07-01), Nemoto et al.

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