Photodetector for weak light having charge reset means
AssigneeNational Institute of Information and Communications Technology, Incorporated Administrative Agency
InventorsMikio Fujiwara, Masahide Sasaki, Makoto Akiba
Life of this patent
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Abstract
The present invention provides a photodetector for weak light that can release charge from the circuit without increasing capacity; the present invention being characterized by a photodetector for weak light that has a charge release means which permits the photodetector for weak light of the present invention to avoid increasing its capacity because it does not require a reset transistor integrated with the photodector, rather the charge reset means of the present invention lowers mounting capacity by removing itself from the circuit after it releases the charge.
Claims12
A photodetector for weak light comprising:
- a substrate comprising an integrating read circuit that includes light detection means and a field effect transistor (FET);
- and
- charge reset means for releasing charges accumulated in the integrating read circuit, wherein
- the light detection means is one of a PIN photodiode and an avalanche photodiode (APD), and
- the charge reset means comprising:
- a rotation mechanism;
- a probe rotated when the rotation mechanism rotates;
- and a connection section that connects the probe to an outside.
A photodetector for weak light, comprising:
- a substrate comprising an integrating read circuit that includes light detection means and a field effect transistor (FET);
- and
- charge reset means for releasing charges accumulated in the integrating read circuit, wherein
- the light detection means is one of the group consisting of a PIN photodiode and an avalanche photodiode (APD), and
- wherein the charge reset means comprises:
- an ascent and descent mechanism;
- a probe that rises and falls by the ascent and descent mechanism;
- and
- a connection section that connects the probe to an output.
Dependencies are inferred from the claim text.