Accession Number : ADD014781

Title :   Pulsed Laser Beam Deviation Apparatus.

Descriptive Note : Patent, filed 24 Apr 81, patented 27 Nov 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bell, Charles E ; Hall, Jay S

Report Date : 27 Nov 1990

Pagination or Media Count : 9

Abstract : A pulsed laser beam aiming apparatus is configurated such that substantially 100% of the energy from a pulsed laser beam from a Q-switched pulsed laser device ic accurately aimed at a distant target/obstacle in space. The pulsed laser beam is reflected off of a multifacet polygonal mirror spinning about its axis and perpendicularly affixed to a rotatable azimuthal table wherein the spinning mirror provides elevational orientation, and, in conjunction with the rotatable azimuthal table, azimuthal orientation. Control circuit and associated equipment cause the Q-switched pulsed laser device to be triggered on when a facet of the mirror is in the proper elevational and azimuthal orientation for the pulsed laser beam to hit the target/obstacle. correct aiming of the pulsed laser beam at the target/obstacle is accomplished when the coordinates thereof are specific only as an elevational angle 5 above and/or below the horizon and an azimuthal angle between 0 and 360 degrees. Patents. (jhd)

Descriptors :   ANGLES, AZIMUTH, CIRCUITS, CONTROL, LASER BEAMS, LASERS, MIRRORS, ORIENTATION(DIRECTION), PATENTS, POLYGONS, PULSED LASERS, Q SWITCHING, ROTATION, SPINNING(MOTION), TABLES(DATA)

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE