Laser direction of arrival detector

G - Physics – 01 – S

Patent

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Details

343/70, 88/97.74

G01S 3/78 (2006.01) G01S 3/783 (2006.01) G02B 6/04 (2006.01) G02B 6/24 (2006.01) G02B 6/26 (2006.01)

Patent

CA 1241415

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 sensor means 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 orthongonal bundles are employed to provide a wide range of coverage for the detector.

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