1986-04-22
1988-04-19
Gellner, Michael L.
354476, 354479, G03B 7099
Patent
active
047393602
ABSTRACT:
A light metering device for single lens reflex camera having photoelectric transducer elements arranged in the optical path of a finder thereof. The photoelectric transducer elements are arranged ahead of a focusing screen as viewed from the direction of finder light, and an area corresponding to a clear portion of the focusing screen is made either to have a photoelectric transducer structure of narrower width than in the environmental area, or to be light-metered by another or separate light metering optical system.
REFERENCES:
patent: 3521542 (1970-07-01), De Goederen
patent: 3612703 (1971-10-01), Irisawa et al.
patent: 4544269 (1985-10-01), Nose et al.
Ohmura Hiroshi
Tsunekawa Tokuichi
Canon Kabushiki Kaisha
Gellner Michael L.
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