Laser measurement system

Details Laser measurement system Laser measurement system

1984-03-29

1987-04-14

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 5, G01C 308

Patent

active

046573828

ABSTRACT:
A laser measurement system uses a high and low power laser beam to determine measurements such as rangefinding, atmospheric molecular composition and the like. A low-power laser beam is initially transmitted to detect obstructions in the path desired to be measured. The intensity of the reflected beam provides an indication of any such obstructions. Only if the path is obstruction free is the high power laser beam transmitted to effect the desired measurement. The system thus prevents harmful effects of the energy reflections from obstructions in the measuring path.

REFERENCES:
patent: 3696248 (1972-10-01), Cunningham et al.
patent: 3830567 (1974-08-01), Riegl
patent: 3848999 (1974-11-01), Dall'Armi
patent: 4140060 (1979-02-01), Brenner
patent: 4197006 (1980-04-01), Maillet
patent: 4288158 (1981-09-01), Frungel
R. J. Matthys et al. "CO.sub.2 Transversely Excited Atmospheric (TEA) Laser Rangefinder", SPIE vol. 227, CO.sub.2 Laser Devices and Applications, pp. 91-97 (1980).
M. J. Taylor et al, "Pulsed CO.sub.2 TEA Laser Rangefinder", Applied Optics, vol. 17, No. 6, pp. 885-889 (Mar. 1978).

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