Optical surveillance sensor apparatus

Details Optical surveillance sensor apparatus Optical surveillance sensor apparatus

1989-02-17

1991-05-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 9629, G01B 1126

Patent

active

050158449

ABSTRACT:
An optical sensor apparatus having one or more optical fibers with a numerical aperture of 0.870 or less to receive and conduct light signals. A light detecting unit receiving the light signals from said optical fibers and providing an electrical output signal in response thereto. A signal processing unit receiving the electrical output signal and determining the signal distribution thereof.

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patent: 4585948 (1986-04-01), Schneider et al.
patent: 4625108 (1986-11-01), Nestel et al.
patent: 4630902 (1986-12-01), Mochizuki et al.
patent: 4650279 (1987-03-01), Magee
patent: 4674874 (1987-06-01), Halldorsson et al.
patent: 4703168 (1987-10-01), Olson
patent: 4835381 (1989-05-01), Sorensen

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