Focusing screen holding device

Details Focusing screen holding device Focusing screen holding device

1981-07-20

1982-12-28

Gonzales, John

354200, G03B 1300, G03B 1912

Patent

active

043658830

ABSTRACT:
A focusing screen holding device for a single-lens reflex camera including a focusing screen, a focusing screen holding frame including focusing adjusting screws, a focusing screen retaining spring, and a hinge on one leaf of which the focusing screen retaining spring is mounted and which has an outer end with a hook engagable with the camera body. The second leaf of the spring is fixedly secured to the camera body so that the focusing screen holding frame is swingable about the shaft of the hinge. The focusing screen is accessible through the lens mount opening to replace and adjust the position of the focusing screen.

REFERENCES:
patent: 2981166 (1961-04-01), Madge
patent: 3174417 (1965-03-01), Sauer et al.
patent: 4132472 (1979-01-01), Urano et al.
patent: 4187016 (1980-02-01), Ishizaka
patent: 4338010 (1982-07-01), Takahashi
patent: 4346973 (1982-08-01), Katsuma et al.

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