Prism viewfinder for reflex cameras with built-in light meter

Details Prism viewfinder for reflex cameras with built-in light meter Prism viewfinder for reflex cameras with built-in light meter

1980-12-12

1982-03-16

Gellner, Michael L.

354152, G03B 7099

Patent

active

043198163

ABSTRACT:
An improved prism viewfinder wherein in the region of the beam-incidence surface of the prism there is provided a partially transmitting mirrored surface which partially reflects the light beam of an angle somewhat greater than 90.degree. onto a light-sensing organ disposed adjacent to the prism.

REFERENCES:
patent: 3842424 (1974-10-01), Tsunekawa et al.
patent: 4021823 (1977-05-01), Mujata
patent: 4134654 (1979-01-01), Murakami et al.

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