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, 1995
Filed:
Oct. 05, 1993
Applicant:
Inventor:
Philip L Gleckman, Irvine, CA (US);
Assignee:
TIR Technologies, Inc., Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
313110 ; 359 49 ;
Abstract
A light source having a light bulb disposed within a cavity having diffusely reflecting walls and an aperture for backlighting a display is disclosed. The ratio of aperture area to cavity surface area is maximized. A diffuser and brightness enhancing film are situated at the opening of the aperture between the aperture and the display to be backlit. A color filter may also be employed to whiten the light emerging from the light source.