发明名称 Method and apparatus for the automatic control of exposure in camera
摘要 An exposure control method and apparatus for camera enables to carry out TTL light intensity feedback metering based on the output of light-measurement even when the output has a value not within a predetermined range of arithmetic operation for exposure control. In the method and apparatus, the luminance of an object field formed by the light transmitted through a taking-lens is metered to generate photometric outputs. The photometric outputs are arithmetically processed to generate arithmetic outputs while inhibiting those of the photometric outputs from being arithmetically processed which are outside of a predetermined range of output value, the aperture value is controlled in accordance with the photometric outputs.
申请公布号 US4589756(A) 申请公布日期 1986.05.20
申请号 US19840650852 申请日期 1984.09.14
申请人 NIPPON KOGAKU K. K. 发明人 SAEGUSA, TAKASHI
分类号 G03B7/08;G03B7/091;G03B7/28;(IPC1-7):G03B7/28 主分类号 G03B7/08
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