Diaphragm-type exposure control system having braking arrangemen

Details Diaphragm-type exposure control system having braking arrangemen Diaphragm-type exposure control system having braking arrangemen

1978-02-24

1979-04-17

Gellner, Michael L.

354271, G03B 708, G03B 906

Patent

active

041497856

ABSTRACT:
An exposure control operation involving diaphragm adjustment is performed in first and second phases. During the first phase, a drag mechanism controls the rate of change of diaphragm value. During the second phase, a braking mechanism cooperates with the drag mechanism to control the rate of change of diaphragm value.

REFERENCES:
patent: 3727528 (1973-04-01), Sato
patent: 3921186 (1975-11-01), Lermann

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