Device for determining distance of area illuminated by pulsed la

Details Device for determining distance of area illuminated by pulsed la Device for determining distance of area illuminated by pulsed la

1983-03-01

1985-09-03

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 5, G01C 310, G01C 308

Patent

active

045389071

ABSTRACT:
In order to determine the distance of a target, illuminated by a remote pulsed laser, from a nearby observation point, the time interval between the arrivals of a direct laser pulse and of a reflection of the same pulse from the target is measured along with the angle included between the two directions of incidence. From these data the target distance can be calculated with reasonable accuracy, e.g. for the purpose of emitting an alarm signal if the calculated distance lies within a predetermined range. The device implementing this procedure could also be used in a feedback loop of a system for the automatic pointing of a pulsed laser beam.

REFERENCES:
patent: 3217592 (1965-11-01), Braun et al.
patent: 4136949 (1979-01-01), Hayamizu et al.
patent: 4352556 (1982-10-01), Haefliger et al.

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