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. 08, 2000
Filed:
Jun. 04, 1997
Applicant:
Inventors:
Bruce A Marvin, Seattle, WA (US);
Timothy R Robinson, Lake Forest Park, WA (US);
Assignee:
Korry Electronics Co., Seattle, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; F21V / ;
U.S. Cl.
CPC ...
349 62 ; 349 64 ; 362339 ; 385901 ;
Abstract
An improved night vision goggle (NVG) compatible backlight for a liquid crystal display (LCD) and active matrix liquid crystal display (AMLCD) and other types of backlit displays is disclosed. The backlight includes a ridged prismatic TIR with an embedded diffuser layer doped with an infrared (IR) absorbing dye (57), a ridged prismatic TIR without diffuser layer (59) an infrared rejecting filter layer (63), and either a holographic diffuser layer or a lenticular lens array layer (65), or a fresnel wedge layer (67).