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:
Jan. 27, 2004
Filed:
Jul. 02, 2001
Igor Lisitsyn, Beachwood, OH (US);
Gerald E. Sasser, III, Lyndhurst, OH (US);
Thomas F. Soules, Richmond Heights, OH (US);
William Edwin Jackson, Solon, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A long life mercury vapor discharge lamp is provided. The lamp has a ultraviolet-reflective barrier layer, a rare earth triphosphor layer coated on the barrier layer, and a fill gas of mercury vapor and argon. Most preferably, the barrier layer has a coating weight about 2.6, mg/cm , the phosphor layer has a coating weight of about comprising a light-transmissive glass envelope having an inner surface, means for providing a discharge, an ultraviolet reflecting barrier layer comprising alumina particles coated adjacent said inner surface of said glass envelope, a phosphor layer coated adjacent said barrier layer, and a discharge-sustaining fill gas of mercury vapor and argon sealed inside said envelope, said fill gas having a pressure of 2.9-5 torr at 25° C., said phosphor layer having a coating weight of 2-3.5 mg/cm2.