Apparatus for sizing particles, droplets or the like with laser

Details Apparatus for sizing particles, droplets or the like with laser Apparatus for sizing particles, droplets or the like with laser

1979-08-16

1982-05-11

Corbin, John K.

Optics: measuring and testing

For size of particles

By particle light scattering

356338, G01N 1502

Patent

active

043290540

ABSTRACT:
An apparatus for sizing particles, droplets or the like, particularly suited for determining the size of droplets in high number density sprays, is described. The apparatus employs the interferometer principle and off-axis collection to limit probe volume and to limit the light scatter detection to refraction and reflection. The central portion of the interference pattern is distinguished in an alternate embodiment by using a second laser beam as a pointer beam.

REFERENCES:
patent: 4211487 (1980-07-01), Morrison et al.
Farmer, "Measurement of Particle Size, Number Density and Velocity Using a Laser Interferometer", Applied Optics, vol. 11, No. 11, pp. 2603-2612, Nov. 1972.

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