Accession Number : ADD006003

Title :   Real-Time Optical Mapping System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Heckman,Paul J , Jr ; McCardell,Peter D

Report Date : 06 Mar 1979

Pagination or Media Count : 9

Abstract : An optical system, to be used with an illuminating source, maps objects located in an underwater environment. A first optical means is adapted to receive light from the illuminating source for transmitting the illumination to the object area to be mapped. A second optical means comprises an input means, adapted to receive reflected light from the illuminated object area, or plane; and an output means for conformally transforming images of all objects in the object plane to an image plane, located externally to the second optical means. A conformal transformation at a point is one which preserves angles between every pair of curves through the point. The optical system further comprises means located between the second optical means and the image plane for filtering or masking light propagating betweeen the two, to thereby reduce backscatter. (Author)

Descriptors :   *Patents, *Mapping, *Underwater, *Area scanning, *Optical equipment, Real time, Underwater light, Illumination, Underwater objects, Light transmission, Plane geometry, Image processing, Conformal mapping, Backscattering

Subject Categories : Cartography and Aerial Photography
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE