Focus correcting device for use in a rangefinder camera

Details Focus correcting device for use in a rangefinder camera Focus correcting device for use in a rangefinder camera

1980-06-12

1981-12-01

Griffin, Donald A.

G03B 1320

Patent

active

043033237

ABSTRACT:
A focus correcting device for use in a rangefinder camera is operable to correct for a displacement of the focal point of an imaging optics which results from a change in the diaphragm aperture of an apertured diaphragm. An interlocking mechanism operationally couples a rangefinder with a focus adjusting mechanism of the imaging optics. Means is disposed in the interlocking mechanism or the focus adjusting mechanism to correct for a displacement of the focal point as the particular diaphragm aperture is established.

REFERENCES:
patent: 1987765 (1935-01-01), Wandersleb
patent: 2108751 (1938-02-01), Kuppenbender
patent: 3044380 (1962-07-01), Baur

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