Visibility measuring device

Details Visibility measuring device Visibility measuring device

1979-10-25

1982-01-19

Corbin, John K.

Optics: measuring and testing

By particle light scattering

With photocell detection

356343, G01N 2100

Patent

active

043113885

ABSTRACT:
A device for measuring the visibility, or diffusion coefficient, of atmosre air, including a light source for directing light onto a volume of air and a receiver capable of measuring the flow of light diffused by the volume of air. The source is surrounded by ambient air and furnishes a beam diverging in essentially all directions except within at least one dark cone. A receiver opening is directed toward the source, but is located in the dark cone so as to receive only diffused light. The apparatus is for use in meteorological installations, notably in airports.

REFERENCES:
patent: 3185975 (1965-05-01), Kompelien
patent: 3563661 (1971-02-01), Charlson et al.

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