Station for detecting and locating through laser beams an object

Details Station for detecting and locating through laser beams an object Station for detecting and locating through laser beams an object

1988-03-02

1990-01-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340630, 356438, G01H 1506

Patent

active

048930261

ABSTRACT:
A station for locating through laser rays an object likely to diffuse back a part of the incident laser ray, wherein the optical emitter and receiver devices consist of one single device comprising, in the direction of emission, a device for separating the emitted and retrodiffused rays, an optical device converting the emitted parallel beam of small diameter into a divergent beam and a telescope adapted to collimate the divergent beam received from the optical device into a parallel beam of larger diameter, the retrodiffused beam travelling that path in the direction reverse from the emitted beam, the invention being usable for detecting in particular forest fire smokes.

REFERENCES:
patent: 3963347 (1976-06-01), Segre et al.
patent: 4105332 (1978-08-01), Hohne et al.
patent: 4197006 (1980-04-01), Maillet
patent: 4654518 (1987-03-01), Astheimer

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