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:
Nov. 24, 1998
Filed:
Mar. 26, 1996
Applicant:
Inventors:
Janpu Hou, Somerset, NJ (US);
Waltraud Rosalie Unger, Glen Rock, NJ (US);
Jerry Wayne Kuper, Martinsville, NJ (US);
Assignee:
AlliedSignal Inc., Morris Township, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362327 ; 362268 ; 362299 ; 362309 ; 362331 ; 362332 ; 362333 ; 362339 ; 362342 ;
Abstract
The light output of a back-coupled illumination system is improved by recycling reflected and misdirected light rays. A reflector at the light source and an array of microprisms having reflective elements therebetween efficiently redirect errant light rays to increase the total available light output and improve efficiency. Both specular and diffuse reflective materials may be used in combination to enhance light output.