Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1979-01-02
1981-09-01
Corbin, John K.
Optics: measuring and testing
By particle light scattering
With photocell detection
250574, 350103, 350292, G01N 2100
Patent
active
042868769
ABSTRACT:
In an apparatus in which particles are passed through an optical sensing zone to measure their light scattering characteristics for the purpose of identifying the particles, means and a method are provided for deviating the collected light in accordance with predetermined different paths to a plurality of different photodetecting devices. The deviation is effected simultaneously with collection by optical radiant energy reflecting means. The different photodetecting devices enable the measurement of energy scattered along the particular path which is identified with that device. The paths are established by the combined collecting and deviating means rather than permitted to evolve by the scattering phenomena themselves whereby the photodetecting devices can be located in convenient arrangements and may be conventional in construction.
REFERENCES:
patent: 3508830 (1970-04-01), Hopkins et al.
Brunsting Albert
Hogg Walter R.
Corbin John K.
Coulter Electronics Inc.
Koren Matthew W.
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