Laser direction of arrival detector

Details Laser direction of arrival detector Laser direction of arrival detector

1989-03-02

1989-11-14

Tarcza, Thomas H.

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

250227, G01C 100, H01J 516

Patent

active

048803057

ABSTRACT:
It has been found that the light output of a fibre bundle is a light annulus with a diameter and intensity that vary with the angle of light incidence on the input end. The specification describes a detector using this phenomenon for determining the orientation of a laser beam arriving at the detector. The detector includes a fibre optic bundle with a polished input end disposed at a known orientation and a sensor at the opposite, output end of the bundle for measuring the deflection of the output beam from the output end axis. It is also possible to measure the intensity of the output. Preferably, five orthogonal bundles are employed to provide a wide range of coverage for the detector.

REFERENCES:
patent: 4200787 (1980-04-01), Carson
patent: 4225781 (1980-09-01), Hammons
patent: 4380391 (1983-04-01), Buser et al.
patent: 4395121 (1983-07-01), Nory et al.
patent: 4433912 (1984-02-01), Schwartz
patent: 4459022 (1984-07-01), Morey
patent: 4625108 (1986-11-01), Nestel et al.

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