The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 1996
Filed:
Jun. 10, 1993
Applicant:
Inventor:
Sheldon M Smith, Los Gatos, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359350 ; 359599 ; 428687 ;
Abstract
A diffuse reflector is provided which isotropically reflects the infrared and far-infrared regions of the spectrum. The reflector includes a metal plate having one surface that is roughened by an electric discharge machine so as to have an r.m.s. roughness large enough to diffusely reflect far-infrared radiation. The roughening process creates facets having cavities which trap and diffusely reflect normally incident far-infrared radiation. An example of a reflector so produced has an isotropic bidirectional reflectance distribution function approximately equal to 1/.pi. sr.sup.-1 between the wavelengths of 5 .mu.m and 100 .mu.m.