Accession Number : ADD013446

Title :   Optical Transmitter/Receiver Apparatus Sharing Common Optics.

Descriptive Note : Patent, Filed 7 May 81, patented 5 Jul 83,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Forrester, Howard M ; Crisler, John R

Report Date : 05 Jul 1983

Pagination or Media Count : 4

Abstract : Optical detection apparatus is provided which includes a coherent light source for generating a beam of coherent light. The apparatus further includes a unitized or discrete optical component which receives the generated beam, and projects light thereof which has a particular polarization characteristic into a specified environment. The optical component also functions to receive or absorb light from the environment which has the particular polarization characteristic, and to directably reflect light from the environment which does not have the polarization characteristic. A lens or other light collecting device focuses light reflected by the discrete optical component upon light detection element. A light conducting path is provided between the coherent light source and the light detecting element to enable generated coherent light to be mixed with the reflected light upon the light detecting element to provide data signals which indicate the presence of an object in the environment.

Descriptors :   *DATA TRANSMISSION SYSTEMS, *OPTICAL DETECTION, *OPTICAL EQUIPMENT, *POLARIZATION, *PATENTS, COHERENT OPTICAL RADIATION, DETECTION, LIGHT, LIGHT SOURCES, PACKAGING, REFLECTION, SIGNALS

Subject Categories : Optical Detection and Detectors
      Command, Control and Communications Systems
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE