Method and apparatus for detecting fluorescence under ambient li

Details Method and apparatus for detecting fluorescence under ambient li Method and apparatus for detecting fluorescence under ambient li

1980-06-11

1982-06-22

Willis, Davis L.

Radiant energy

Luminophor irradiation

Methods

250461R, F21V 916, G01N 2164

Patent

active

043364594

ABSTRACT:
Fluorescent materials such as certain metal ores are detected under ambient light conditions by observing the material through a gated aperture which is opened at predetermined intervals for periods of predetermined duration while simultaneously exposing the material to periodic pulses of fluorescent stimulating light. The frequency of the light pulse is synchronized with the frequency of the opening of the gated aperture so that the aperture is open for at least a portion of the period during which fluorescence is produced by the stimulating light pulse. Electro-optic goggles are a preferred type of gated aperture.

REFERENCES:
patent: 3487210 (1969-12-01), Hubert
patent: 3663814 (1972-05-01), Madsen
patent: 3736428 (1973-03-01), Monroe

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