Patent · US Expired

High-pressure gas-discharge lamp with improved temperature resistance

US7514871B2 · kind B2 · utility

2Cited by

6References

7Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Robert Scholl · Roetgen, DE
Rainer Hilbig · Aachen, DE
Achim Gerhard Rolf Körber · Kerkrade, NL
Johannes Baier · Harsewinkel, DE
Klaus Gawron · Aachen, DE
Dieter Leers · Stolberg, DE

Key dates

Filing date	Sep 23, 2003
Grant date	Apr 7, 2009
Priority date	—
Expiry date	Nov 20, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/86
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a high-pressure gas-discharge lamp, having at least one gastight fused press-seal between a glasslike material and molybdenum, wherein the molybdenum in the fused press-seal is at least partly exposed to an oxidizing environment and at least that part of the molybdenum that is exposed to the oxidizing environment is covered with a coating, and the coating comprises at least one oxide from among Fe2O3, Ta2O5, Nb2O5, Al2O3, SiO2, TiO2, ZrO2, HfO2, and/or one nitride from among TiN, ZrN, HfN, AlN, BN, and/or one carbide from among TiC, ZrC, HfC, VC, NbC, TaC, B4C.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.