Dual sensitivity optical sensor

Details Dual sensitivity optical sensor Dual sensitivity optical sensor

1980-09-29

1982-12-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250578, 357 30, H01J 4014

Patent

active

043663770

ABSTRACT:
A dual sensitivity photodetector comprising a central region comprising a relatively high sensitivity reach through avalanche photo diode and a surrounding region comprising a relatively lower sensitivity P-type intrinsic N-type photodiode is disclosed which possesses the advantages of a wide sensitivity range and a relative freedom from overload.

REFERENCES:
patent: 3296502 (1967-01-01), Gross et al.
patent: 3617753 (1971-11-01), Kato et al.
patent: 4003655 (1977-01-01), Wasilko
patent: 4129878 (1978-12-01), Webb

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