发明名称 Light metering device for camera
摘要 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.
申请公布号 US4739360(A) 申请公布日期 1988.04.19
申请号 US19860855173 申请日期 1986.04.22
申请人 CANON KABUSHIKI KAISHA 发明人 OHMURA, HIROSHI;TSUNEKAWA, TOKUICHI
分类号 G01J1/04;G03B7/099;(IPC1-7):G03B7/099 主分类号 G01J1/04
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