Aperture control mechanism

Details Aperture control mechanism Aperture control mechanism

1981-11-10

1983-08-02

Griffin, Donald A.

354 46, G03B 902, G03B 720

Patent

active

043962726

ABSTRACT:
An abutment pin is provided for defining the fully open position of the aperture release member on an interchangeable lens. The aperture drive member on the camera is biased toward the abutment pin so that the rest position of the drive member will always correspond to a fully open aperture regardless of lens misalignment. The aperture stop down is then controlled by measuring the movement of the drive member from its rest, or start, position.

REFERENCES:
patent: 2929308 (1960-03-01), Swarofsky
patent: 3961339 (1976-06-01), Akiyama
patent: 4336990 (1982-06-01), Flother
patent: 4344688 (1982-08-01), Metabi

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