发明名称 |
Semiconductor color sensor detection circuit |
摘要 |
In a semiconductor color sensor circuit with two photodiodes having mutually different wavelength sensitivity characteristics, the ratio of numbers or areas of two types of transistors for logarithmic compression of signals from these photodiodes is adjusted so that errors in output voltage due to changes in temperature can be reduced and the dynamic range of illuminance of incident light can be enlarged.
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申请公布号 |
US4692025(A) |
申请公布日期 |
1987.09.08 |
申请号 |
US19850734341 |
申请日期 |
1985.05.14 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
TANI, ZEMPEI;MASUDA, YOSHIFUMI;MIYAKE, TOSHIHIDE |
分类号 |
G01J5/60;(IPC1-7):G01J5/60 |
主分类号 |
G01J5/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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