Photoelectric conversion apparatus and photoelectric...

Details Photoelectric conversion apparatus and photoelectric... Photoelectric conversion apparatus and photoelectric...

2007-02-13

2007-02-13

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C330S308000

Reexamination Certificate

active

11065514

ABSTRACT:
A photoelectric apparatus has a phototransistor which receives a light signal and in which a collector current thereof varies according to intensity of the received light signal, and a transistor in which a collector current thereof varies according to a base voltage thereof. The phototransistor and the transistor constitute a differential amplification circuit. At least one of the phototransistor and the transistor outputs an electric signal.

REFERENCES:
patent: 5266793 (1993-11-01), Smith
patent: 6919552 (2005-07-01), Flower
patent: 2000244458 (2000-09-01), None
Takahashi et al., (1992) “10 GHz spacing optical frequency division multiplexer based on arrayed-waveguide grating” Electronics Letters 28(4):380-382.

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