发明名称 Light measuring device for camera
摘要 A light measuring device for a camera has a light receiving photo-sensitive element, the light receiving surface of which is divided at least into two regions including a center part and a peripheral part and a diffusing member which is disposed in front of the photo-sensitive element and is arranged to have a diffusing surface formed solely in the peripheral area thereof. The light measuring operation of the device is arranged to be shiftable between one mode in which light measurement is carried out solely through the center part of the light receiving surface of the photo-sensitive element and another mode in which light measurement is carried out approximately through the whole light receiving surface.
申请公布号 US4571050(A) 申请公布日期 1986.02.18
申请号 US19840611412 申请日期 1984.05.17
申请人 CANON KABUSHIKI KAISHA 发明人 MOMIYAMA, KIKUO
分类号 G03B7/08;G03B7/099;(IPC1-7):G03B7/099 主分类号 G03B7/08
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