Accession Number : AD0165007

Title :   Polarized Light Source for Underwater Use.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Fugitt,Ronald Bruce

Report Date : 03 JUL 1973

Pagination or Media Count : 8

Abstract : The patent relates to a circularly polarized underwater light source comprising: a conventional unpolarized light source with a well-collimated output; an efficient optical polarizer, which employs multilayer interference polarization, total internal reflection, birefringent quarter-wave plates; and anti-reflection coatings; a lens to control the extent of the divergence of the illuminating beam; and an underwater housing with a dome-shaped window designed to withstand external hydrostatic pressures, part of the winding forming the lens.

Descriptors :   *Underwater lights, *Patents, *Light sources, Polarization, Housings(Enclosures), Beam splitting

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE