Small particle detection system

Details Small particle detection system Small particle detection system

1985-04-10

1987-08-11

LaRoche, Eugene R.

Optics: measuring and testing

By particle light scattering

With photocell detection

356352, G01N 2100

Patent

active

046858024

ABSTRACT:
In a small particle detection system for use in detecting small particles, which float in a gas, by utilizing the light scattering effect thereof, a detecting cell is disposed in an external optical resonator which is adapted to resonate with the output light from a laser oscillator. When the detecting cell is disposed in the laser oscillating optical resonator, the position is selectively determined; the former is set in the position in the latter in which the diameter of a laser beam is minimal.

REFERENCES:
patent: 3785735 (1974-01-01), Friedman et al.
patent: 4053229 (1977-10-01), McCluney
patent: 4571079 (1986-02-01), Knollenberg

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