Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2011-01-25
2011-01-25
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
C257S184000
Reexamination Certificate
active
07876422
ABSTRACT:
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.
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Hashimoto Yusuke
Imai Kenji
Takada Yuji
Tsunesada Fumi
Alsomiri Isam
Cheng Law Group PLLC
Panasonic Electric Works Co., Ltd.
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