发明名称 Device for setting exposure quantity
摘要 A device for setting exposure quantity for use in micro-film cameras projectors and so forth, wherein an object to be photographed or projected is divided into a plurality of sections, and a quantity of light reflected from, or transmitted through, the object is metered for each of the divided sections, thereby setting the exposure quantity in accordance with the section where the reflected or transmitted light quantity as metered is the maximum.
申请公布号 US4433908(A) 申请公布日期 1984.02.28
申请号 US19810320702 申请日期 1981.11.12
申请人 CANON KABUSHIKI KAISHA 发明人 OMI, KOKICHI;KURODA, YASUO
分类号 G03B27/72;G03B27/80;(IPC1-7):G03B27/80 主分类号 G03B27/72
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