Diaphragm-operating device for use in an interchangeable-lens ty

Details Diaphragm-operating device for use in an interchangeable-lens ty Diaphragm-operating device for use in an interchangeable-lens ty

1978-06-01

1980-04-01

Hayes, Monroe H.

G03B 902

Patent

active

041959256

ABSTRACT:
A series of spring biased pivoting members are provided for controlling the diaphragm stop-down and mirror retraction operations. The diaphragm stop down occurs prior to mirror retraction in order to allow time for any "bouncing" of the mechanism to dissipate and the required winding force is relatively low since only a single spring must be overcome in order to set the mechanism.

REFERENCES:
patent: 3537375 (1970-11-01), Kiper et al.
patent: 3680458 (1972-08-01), Nomura
patent: 3831181 (1974-08-01), Nozawa
patent: 3854811 (1974-12-01), Araki
patent: 3958868 (1976-05-01), Mizuki

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