发明名称 LICHTMESS-SCHALTUNGSSYSTEM
摘要 In the disclosed system, a light measuring circuit having a logarithmical amplifier, is constructed to produce pulses at a frequency corresponding to the output of the light measuring circuit. Pulses are counted during a time interval corresponding to the temperature characteristic of the light measuring circuit so as to obtain a count value corresponding to the light input free of the influence of temperature.
申请公布号 DE2923166(A1) 申请公布日期 1979.12.20
申请号 DE19792923166 申请日期 1979.06.07
申请人 CANON K.K. 发明人 SAKANE,TOSHIO;TSUNEKAWA,TOKUICHI
分类号 G01J1/44 主分类号 G01J1/44
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