Accession Number : ADD007164

Title :   Apparatus for, and Method of, Recording and Viewing Laser-made Images on High Gain Retroreflective sheeting.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Galanos,Demosthenes G

Report Date : 29 Apr 1980

Pagination or Media Count : 6

Abstract : This patent discloses from a laser light beam a preselected pattern, that is transparent and/or opaque, on a target made of high gain retroreflective sheeting of the exposed-lens type, with the target inclined at a previously chosen angle; and, thereafter, viewing the recorded image of the pattern (which is recorded on the target by structural alteration, i.e., modification, of the target material that is caused by the laser light beam radiation), solely with the naked eye and in ambient light. The recorded image can be seen only when the target is inclined at the same angle at which the target was positioned when the pattern was recorded by the laser beam radiation on the target. (Author)

Descriptors :   *Patents, *Laser beams, *Optical images, *Image processing, Recording systems, Viewers, Retroreflectors, Angles, Sheets, Microspheres, Glass, Pattern recognition

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE