Refractive-index responsive light-signal system

Details Refractive-index responsive light-signal system Refractive-index responsive light-signal system

1979-10-03

1980-12-23

Corbin, John K.

Optics: measuring and testing

Refraction testing

Refractive rod engages specimen

250577, 250227, 320 48, G01N 2141

Patent

active

042407478

ABSTRACT:
A device for producing a light signal corresponding to the refractive index of a fluid medium comprises an elongated light-conducting body consisting of an input section and an output section connected to each other by an intermediate curved section adapted for immersion in said fluid. This curved section is provided with a plurality of curvatures arranged successively and bent alternately in opposite directions, whereby light passing by refraction into said fluid undergoes a notably greater variation, as a function of the refractive index of said fluid medium, than can be obtained with a curved section bent in a simple direction. A light signal is thus provided with a high sensitivity. The complex-curved, preferably .OMEGA.-shaped, section can be enclosed in an envelope composed in part of filter material.

REFERENCES:
patent: 3282149 (1966-11-01), Shaw et al.
Armitage, Jr., J. D., "Measuring the Rate of Liquid-Bubbling", IBM Technical Disclosure Bulletin, vol. 6, No. 4, p. 71, Sep. 1963.

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