Fiber optic detector and depth sensor and method for doing same

Details Fiber optic detector and depth sensor and method for doing same Fiber optic detector and depth sensor and method for doing same

1993-07-06

1995-03-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250903, 25022725, 25022728, G01N 2149

Patent

active

053960793

ABSTRACT:
A fiber optic sensor for determining the presence and/or measuring the depth of a first substance capable of transmitting light. The fiber optic sensor includes a plurality of light receiving fibers, a plurality of light transmitting fibers surrounding the light receiving fibers and structure for refracting light from the light transmitting fibers at a predetermined angle for total internal reflection of the light from an interface of the first substance with a second substance.

REFERENCES:
patent: 4039845 (1977-08-01), Oberhansli et al.
patent: 4240751 (1980-12-01), Linnecke et al.
patent: 4320291 (1982-03-01), Uramoto et al.
patent: 4713552 (1987-12-01), Denis et al.
patent: 4909588 (1990-03-01), Harner et al.
patent: 4998022 (1991-03-01), Tregay

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