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:
Jun. 19, 2012
Filed:
Aug. 31, 2009
Hideyuki Matsumoto, Yokohama, JP;
Takashi Noguchi, Yokohama, JP;
Hideyuki Matsumoto, Yokohama, JP;
Takashi Noguchi, Yokohama, JP;
Osram AG, Munich, DE;
Abstract
A discharge lamp configured to suppress temperature increases in the electrode on the opening part side of a reflective mirror is described. The discharge lamp includes an F electrode and an R electrode having shapes before forming the melt electrodes that satisfy at least one of the following conditions (a) to (c): (a) The diameter of the core wire of the F electrode is d, and the diameter of the core wire of the R electrode is d, then d>1.2×d; (b) The wire diameter of the coil of said F electrode is d, and the wire diameter of the coil of the R electrode is d, then d>1.2×d; (c) the number of windings of the coil of the F electrode is nf, and the number of windings of the coil of the R electrode is nr, then nf>1.2×nr.