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:
Apr. 20, 2010
Filed:
Jun. 01, 2006
Applicants:
Klaus Stockwald, Germering, DE;
Herbert Weiβ, Deisenhofen, DE;
Inventors:
Klaus Stockwald, Germering, DE;
Herbert Weiβ, Deisenhofen, DE;
Assignee:
OSRAM Gesellschaft mit beschraenkter Haftung, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 61/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The high pressure discharge lamp is fitted with a discharge vessel that has an inside volume with an inside length IL and a maximum inside diameter ID, and that is subdivided into a middle region of constant inside diameter ID and two end regions of variable inside diameter, an electrode projecting into the discharge vessel in the end region in each case. In addition, the discharge vessel has an aspect ratio of 2.5 to 8, preferably 3 to 6, the end region exhibiting a given length LRD in which the inside diameter is reduced to at least 85% of ID.