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. 10, 2006
Filed:
Jul. 04, 2002
Gerhard Döll, Ulm, DE;
Gerhard Döll, Ulm, DE;
Abstract
A dielectric barrier discharge lamp having electrodes arranged on the wall of the discharge vessel has a VUV/VIS reflection layer () made of a material with a high secondary electron emission coefficient on at least a part of the inner wall of the discharge vessel. A luminescent material layer () is in turn applied on the VUV/VIS reflection layer (). Moreover, at least one partial region () without luminescent material is provided in the luminescent material layer (), this at least one partial region () partially uncovering the underlying VUV/VIS reflection layer () and additionally being arranged at least in direct proximity to one or more electrodes () of the lamp. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.