Accession Number : ADD005496

Title :   Method for Producing Optical Baffling Material Using Pulsed Electron Beams.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Lee,John N ; Oswald,Robert B , Jr

Report Date : 02 May 1978

Pagination or Media Count : 5

Abstract : This patent covers a method for producing durable optical baffling materials comprising polishing to a mirror finish the surface of a starting material, preferably having a very fine-grained structure, and then bombarding the surface of the starting material with low energy (0 to 50 keV) pulsed electrodes at a pulse length of about 0.1 microseconds. A fluence of 0.5 cal/sq cm renders the surface completely black in appearance, retaining none of its initial mirror-like properties. (Author)

Descriptors :   *Patents, *Baffles, *Optical materials, Electron beams, Beryllium oxides, Glassy carbon, Surface properties, Light

Subject Categories : Structural Engineering and Building Technology
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE