Optics: measuring and testing – For size of particles – By particle light scattering
Patent
1976-08-20
1979-11-06
Corbin, John K.
Optics: measuring and testing
For size of particles
By particle light scattering
250564, 250574, 356343, G01N 1502
Patent
active
041734157
ABSTRACT:
To characterize and differentiate large organic cells rapidly, individual particles are illuminated with monochromatic radiation of a wave length comparable to the size of the cell, producing a differential light scattering pattern about the illuminated cell. The pattern is sensed, preferably in the disclosed apparatus, by an array of detectors, and the sensed pattern employed as an identification and characterization of the cell. The pattern may be analyzed, or selected portions of the pattern employed, to differentiate cells embodying different features. The apparatus and process is especially useful for rapid identification and differentiation of leucocytes and other types of mammalian cells, the radiation for such analyses preferably being infrared radiation. A preferred structure for individually illuminating such cells with radiation and for sensing their differential light scattering pattern is disclosed.
REFERENCES:
patent: 3624835 (1971-11-01), Wyatt
patent: 3834818 (1974-09-01), Meric
Wyatt, "Differential Light Scattering: a Physical Method for Identifying Living Bacterial Cells," Applied Optics, vol. 7, pp. 1879-1896, Oct. 1968.
Bonner et al., "Fluorescence Activated Cell Sorting," Review of Scientific Instruments, vol. 43, pp. 404-409, Mar. 1972.
Corbin John K.
Koren Matthew W.
Science Spectrum, Inc.
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