Focusing screen interchanging device in single lens reflex camer

Details Focusing screen interchanging device in single lens reflex camer Focusing screen interchanging device in single lens reflex camer

1981-01-30

1982-08-31

Griffin, Donald A.

354200, G03B 1300, G03B 1912

Patent

active

043469736

ABSTRACT:
In a single lens reflex camera a focusing screen is removably attached with a focusing screen fitting member unitarily formed therewith for fitting the focusing screen in the camera body with a spring being provided therebetween to form a focusing screen unit. The focusing screen fitting member is provided with a clamp holder portion for engagement with an interchanging tool for use in attaching and detaching the focusing screen unit to and from the camera body, whereby the interchanging operation of the focusing screen may be performed with ease and safety.

REFERENCES:
patent: 3174417 (1965-03-01), Sauer et al.
patent: 4132472 (1979-01-01), Urano et al.
patent: 4180311 (1979-12-01), Urano et al.
patent: 4187016 (1980-02-01), Ishizaka

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