Optics: measuring and testing – By inspection with agitation or rotation – Of container contents
Patent
1982-03-02
1985-01-08
McGraw, Vincent P.
Optics: measuring and testing
By inspection with agitation or rotation
Of container contents
356240, G01N 2190
Patent
active
044924755
ABSTRACT:
A method of detecting foreign matters mixed in a liquid filled in a transparent receptacle, which comprises bringing said receptacle to a sudden stop after rotating it at high speed, subjecting the receptacle to light by means of a projector disposed outside the receptacle to thereby expose foreign matters floating in the liquid contained in the receptacle to rays of light, making the ray-receiving surface of a ray receiver disposed on the opposite side of the projector relative to the receptacle receive the flux of light passing through the receptacle by way of light-focusing glass fibers provided for the ray receiver, and detecting foreign matters mixed in the liquid on the basis of the decrease or increase in the amount of rays received.
REFERENCES:
patent: 3029349 (1962-04-01), Schell
patent: 3737236 (1973-06-01), Borrelli
patent: 4028553 (1977-06-01), Farcinade
patent: 4058737 (1977-11-01), Takahashi et al.
patent: 4087184 (1978-05-01), Knapp et al.
"Optical Characteristics Of A Light-Focusing Fiber Guide And Its Applications"; Uchida et al.; IEEE Jour. Of Quantum Electronics, vol. QE6, No. 10, Oct. 1970, pp. 606-612.
Eisai Co. Ltd.
McGraw Vincent P.
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