Patent ID: 8049398
Filing Date: 2011-11-01
Classification: H01J

Abstract:
1. A high-pressure discharge lamp comprising: an arc tube, which is a glass enveloping vessel with a pair of electrodes arranged therein, wherein the arc tube includes: each electrode includes an electrode bar whose one end is joined to a surface of a corresponding one of metallic foils, the one end of each electrode bar is partially wrapped around by a corresponding one of sleeve-like metallic cover foils, each cover foil having a cut-out section that is positioned over a joining area where the one end of each electrode bar is joined to the surface of the corresponding metallic foil, the cut-out section in each cover foil is formed by an opening in the cover foil at least from a circumferential edge of the cover foil above the corresponding metallic foil and extending through the length of the joining area, and each cover foil and each metallic foil are in a corresponding one of the sealing portions, with the one end of each electrode bar partially wrapped around by the corresponding cover foil.