Accession Number : ADD001417

Title :   Scanning Optical Imaging System with Real-Time Image Thresholding for the Elimination of Backscattered Light.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Funk,Clarence J

Report Date : 24 Dec 1974

Pagination or Media Count : 5

Abstract : The patent concerns an imaging system for environments where light scattering reduces image quality. The imaging system comprises a scanning illumination source to illuminate an object field. A first photoelectric transducer converts a focused image of the illuminated object field to an electric analog. A second real-time thresholding photoelectric transducer is physically and electrically connected to the first transducer to recreate an optical image of the object field having electrical analog values in excess of a predetermined value. Utilization of the optical output from the second transducer is by conventional optical or electrooptical systems. This system can be used for remotely controlled unmanned underwater vehicles as well as automatic data gathering packages carried on manned submersible vehicles.

Descriptors :   *Optical images, *Closed circuit television, *Patents, Real time, Viewers, Underwater, Remote control, Backscattering, Underwater vehicles, Underwater light, Television cameras, Display systems, Underwater photography, Signal processing, Optical scanning, Electrooptics, Liquid crystals, Transducers, Photoelectricity, Light scattering

Subject Categories : Optics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE