发明名称 |
PHOTOELECTRIC CONVERSION APPARATUS |
摘要 |
There is provided a photoelectric conversion apparatus capable of obtaining good photoelectric conversion characteristics regardless of a decrease in current amplification ratio of the phototransistor and manufacturing variations in phototransistor. The photoelectric conversion apparatus includes a photoelectric conversion element that generates a current by photoelectric conversion; a transistor that inputs a current generated by the photoelectric conversion element to a base thereof, amplifies the input current, and outputs the amplified current from an emitter; a logarithmic conversion unit that logarithmically converts the current output from the transistor; a current generating unit that outputs the current to the base of the transistor; and a current controlling unit that controls the output current of the current generating unit in a light shielding state of the photoelectric conversion element based on the signal logarithmically converted by the logarithmic conversion unit. |
申请公布号 |
US2012175503(A1) |
申请公布日期 |
2012.07.12 |
申请号 |
US201113326898 |
申请日期 |
2011.12.15 |
申请人 |
KURODA YUKIHIRO;KOBAYASHI HIDEO;CANON KABUSHIKI KAISHA |
发明人 |
KURODA YUKIHIRO;KOBAYASHI HIDEO |
分类号 |
H01L31/02 |
主分类号 |
H01L31/02 |
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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