Accession Number : ADD005881

Title :   Laser Screen.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Kuchmas,John , Jr ; Bubb,Gary E

Report Date : 27 Jun 1978

Pagination or Media Count : 4

Abstract : A light screen device for measuring the velocity of a projectile comprising a laser disposed opposite to one end of a first plane reflecting mirror and inclined with respect thereto to cause a laser beam to strike the first plane reflecting mirror and in turn to reflect the beam to a second plane mirror and successively reflecting the beam back and forth vertically to higher points on each mirror surface forming a criss-cross rectangularly shaped light grid network therebetween. A light detector is disposed axially in line with a reflected beam to intercept and detect the continuing presence thereof and to generate a pulse signal in response to the projectile passing through the light screen to stop a counting circuit. (Author)

Descriptors :   *Patents, *Laser beams, *Laser tracking, *Projectile trajectories, *Velocity, Screens(Displays), Light pulses, Mirrors, Plane geometry, Grids(Coordinates), Networks, Detectors, Measuring instruments

Subject Categories : Lasers and Masers
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE