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. 01, 2005
Filed:
Jul. 09, 2002
Applicant:
Gerhard Döll, Ulm, DE;
Inventor:
Gerhard Döll, Ulm, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J061/35 ; H01J061/42 ;
U.S. Cl.
CPC ...
Abstract
A dielectric barrier discharge lamp () having a tubular discharge vessel () and a luminescent material layer on at least a part of the inner wall of the discharge vessel () and having elongate electrodes () is provided with a coating () on a partial region of the inner wall at least at one end of the tubular discharge vessel (), which coating additionally covers an end of at least one elongate electrode () . The material of the coating () has a high secondary electron emission coefficient. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.