发明名称 |
SPATIAL INFORMATION DETECTING DEVICE AND PHOTODETECTOR SUITABLE THEREFOR |
摘要 |
A spatial information detecting device is provided, which is capable of reducing the possibility that a saturation phenomenon is caused by the influence of an environmental light. This device includes a photoelectric converting portion for receiving a signal light from a target space to generate electric charges, a charge separating portion for separating electric charges corresponding to a constant amount of a bias component as undesired electric charges from the electric charges generated by the photoelectric converting portion, a charge accumulating portion for accumulating the remaining electric charges as effective electric charges reflecting a fluctuation component of the signal light, a barrier control electrode for forming a potential barrier between the charge separating portion and the charge accumulating portion, and a charge take-out portion for outputting the effective electric charges as an received-light output. By controlling a voltage applied to the barrier control electrode to change a height of the potential barrier, it is possible to adjust an amount of electric charges flowing from the charge separating portion into the charge accumulating portion over the potential barrier. |
申请公布号 |
HK1123353(A1) |
申请公布日期 |
2011.06.10 |
申请号 |
HK20090100966 |
申请日期 |
2009.02.03 |
申请人 |
PANASONIC ELECTRIC WORKS CO., LTD. |
发明人 |
HASHIMOTO, YUSUKE;TAKADA, YUJI;IMAI, KENJI;TSUNESADA, FUMI |
分类号 |
G01C;G01S;H01L;H04N5/335;H04N5/359 |
主分类号 |
G01C |
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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