Accession Number : ADD005671

Title :   Fiber Optic Laser Beam Detector.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Knutsen,Wallace

Report Date : 25 Oct 1978

Pagination or Media Count : 11

Abstract : An apparatus for the detection of laser beam perforation of a target. A plurality of fiber optic threads are disposed in a grid arrangement behind the target along the anticipated beam sensor line opposite the exposed surface of the target. Upon beam perforation of the target, the laser energy impinges upon the fiber optic threads causing them to produce optical signals and allowing them to behave as light pipes. Groups of these fiber optic threads are gathered together and optically coupled to photo-electrical transducers for generating electrical signals in response to the optical signals generated within the fibers. These electrical signals are detected and recorded to provide accurate information regarding the time and position of laser beam burn through of the target. (Author)

Descriptors :   *Patent applications, *Fiber optics, *Burnthrough, Optical detectors, Holes(Openings), Fiber optics transmission lines, Quick reaction, Transducers, Test equipment, Laser beams, Laser target interactions, Perforation

Subject Categories : Lasers and Masers
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE