Method and apparatus for measuring small particle size distribut

Details Method and apparatus for measuring small particle size distribut Method and apparatus for measuring small particle size distribut

1989-11-07

1992-03-10

Rosenberger, Richard A.

Optics: measuring and testing

For size of particles

By particle light scattering

356338, 356342, 250574, G01N 1502, G01N 1506

Patent

active

050945327

ABSTRACT:
A method of measuring the size distribution of moving particles within a scattering medium includes a step of directing a beam of light into the scattering medium. The frequency of the scattered light is compared to nonscattered light emitted from the scattering medium and results in the generation of a first signal having a magnitude which is indicative of the difference in frequency between the scattered light and the nonscattered light. A second signal is generated having a magnitude which varies with frequency on a linear scale. The frequency scale of the second signal is then translated to a logarithmic scale. Finally, the translated second signal is deconvolved to determine the size and distribution of moving particles within the scattering medium.

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