Accession Number : ADD010209

Title :   System for Measuring Angular Deviation in a Transparency.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Lask,Harry L ; Genco,Louis V ; Smith,Kenneth L ; Dabbs,Albert G

Report Date : 22 Mar 1983

Pagination or Media Count : 7

Abstract : An improved system for measuring absolute angular deviation through transparencies, such as aircraft wind-screens, uses an incoherent light source and a target configuration in the form of an opaque slide with a transparent 'L'-shaped pattern. The positions of images of the legs of the 'L' passed through the transparency are deteced by CCD arrays for measurement of the azimuth and elevation components of angular deviation for each tested point on the transparency, uncontaminated by lateral displacement errors.

Descriptors :   *Patents, *Transparencies, *Windshields, *Distortion, *Prisms(Optics), *Measurement, Visors, Helmets, Displacement, Light sources, Geometric forms, Aircraft, Charge coupled devices, Elevation, Incoherent scattering, Images, Configurations, Azimuth, Parts, Targets, Angles, Inventions, Legs, Errors

Subject Categories : Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE