Concentric photoelectric light-receiving element

Details Concentric photoelectric light-receiving element Concentric photoelectric light-receiving element

1990-09-27

1992-11-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214A, H01J 4014

Patent

active

051645815

ABSTRACT:
An invention provides a light receiving element which can monitor a light signal input without causing a disturbance in an output signal. A light receiving element has a first active area irradiated by a major component of an input light signal and a second active area irradiated by a leakage light component of the input light signal. An output optical current for information transmission is generated by the light signal radiated on the first active area, and a monitor light output current is generated by the leakage light component of the light signal radiated on the second active area.

REFERENCES:
patent: 3777149 (1973-12-01), Marcatili
patent: 3777150 (1973-12-01), Miller
patent: 4882478 (1989-11-01), Hayashi et al.

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