High speed exposure time control means for focal plane shutters

Details High speed exposure time control means for focal plane shutters High speed exposure time control means for focal plane shutters

1976-04-19

1977-08-23

Griffin, Donald A.

G03B 1738

Patent

active

040443680

ABSTRACT:
A high speed exposure time control means for focal plane shutters wherein, in order that an always accurate high speed exposure time may be obtained, a rear blade actuating member is so made as to be released after the lapse of a fixed time from the time of the shutter release and the time interval from the time of the shutter release to the time when a front blade actuating member is released is so made as to be varied by setting the exposure time.

REFERENCES:
patent: 3507202 (1970-04-01), Prochnow
patent: 3984848 (1976-10-01), Akiyama et al.

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