Optics: measuring and testing – For size of particles – By particle light scattering
Patent
1995-09-22
1997-11-04
Font, Frank G.
Optics: measuring and testing
For size of particles
By particle light scattering
356338, 356340, 356243, G01J 102, G01N 1502, G01N 2100
Patent
active
056845855
ABSTRACT:
A particle counter including a modulator to allow electronically determining calibration. The modulator is connected to a driving circuit of a source of light to cause the light to emit a beam of a constant amplitude, representing at least one particle of predefined size. Light transmitted along an optical axis changes in intensity in response to a signal produced by the modulator. A detector is positioned to sense the change in intensity to produce signals proportional to the light sensed. A displaying device, such as a pulse height analyzer, is in electrical communication to receive the signals produced by the detector to quantitatively display the change in intensity of the light.
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Font Frank G.
Met One, Inc.
Schneck Thomas
Vierra-Eisenberg Jason D.
Yee George B.F.
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