Tubular evanescent wave sensor for molecular absorption spectros

Details Tubular evanescent wave sensor for molecular absorption spectros Tubular evanescent wave sensor for molecular absorption spectros

1997-07-24

1999-03-30

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022723, H01J 516

Patent

active

058892796

ABSTRACT:
A sensor including an emission-reception device 22 which emits a light interacting with a fluid 24 and receives the light after it interacts with the fluid. A tubular light guide 26 immersed in fluid has one end facing the emission-reception device and another end for reflection. A structure 32 maintains the tubular light guide at a predetermined distance from the emission-reception device in order to form an evanescent wave in the fluid.

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patent: 4844869 (1989-07-01), Glass
patent: 4893894 (1990-01-01), Caimi
patent: 4950885 (1990-08-01), Kershaw
patent: 5170056 (1992-12-01), Berard et al.
patent: 5526112 (1996-06-01), Sahagen

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