Optics: measuring and testing – Refraction testing – Refractive rod engages specimen
Patent
1978-06-28
1980-02-05
Corbin, John K.
Optics: measuring and testing
Refraction testing
Refractive rod engages specimen
250227, 250577, G01N 2146
Patent
active
041870255
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 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.
REFERENCES:
patent: 3282149 (1966-11-01), Shaw et al.
patent: 3610755 (1971-10-01), Wieberger et al.
patent: 3969016 (1976-07-01), Kaiser et al.
patent: 4045668 (1977-08-01), Pitt et al.
patent: 4082959 (1978-04-01), Nakashima
American Optical Company Publication Titled "Space Defense", Space Defense Group -Southbridge, Mass.
Journal of the Optical Society of America, vol. 36, No. 1, Jan. 1946, "A Photo-Electric Retractometer" by E. Karrer and R. Orr, pp. 42-46.
Arnold Bruce Y.
Battelle (Memorial Institute)
Corbin John K.
Ross Karl F.
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