Laser detection device

Details Laser detection device Laser detection device

1984-12-20

1987-06-23

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

250227, G01B 1126

Patent

active

046748741

ABSTRACT:
A device for detecting the presence and direction of a pulsating or intensity-modulated laser radiation, in which the direction of radiation is exactly determined measures time intervals. A system with two detector elements is provided, with the first element producing a starting signal immediately when the laser radiation is incident, and the second element producing a stop signal which is delayed in time relative thereto. The second detector element is connected to a plurality of unequally long optical delay lines, each coupled to an optical collecting aperture having a specific orientation and a limited field of sight, with the individual fields of sight overlapping one another.

REFERENCES:
patent: 3953131 (1976-04-01), Britz
patent: 4099879 (1978-07-01), Britz
patent: 4380391 (1983-04-01), Buser et al.
patent: 4395121 (1983-07-01), Nory et al.
patent: 4518256 (1985-05-01), Schwartz

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