EP 1114438 B1 20081217 - HIGH-PRESSURE DISCHARGE LAMP
Title (en)
HIGH-PRESSURE DISCHARGE LAMP
Title (de)
HOCHDRUCKENTLADUNGSLAMPE
Title (fr)
LAMPE A DECHARGE A HAUTE PRESSION
Publication
Application
Priority
- DE 19933154 A 19990720
- EP 0005695 W 20000621
Abstract (en)
[origin: DE19933154A1] The invention relates to a current feed-through for discharge lamps and to a discharge lamp comprising a discharge vessel through whose wall at least one current feed-through is guided, whereby a discharge electrode is arranged on one end of the current feed-through that is arranged in the discharge lamp. The aim of the invention is to provide an additional possibility of increasing the resistance of current feed-throughs, which are arranged in or on discharge lamps, to oxidation and corrosion. To this end, the invention provides that the current feed-through is constructed of at least two separate parts, and that at least one part is made of niobium, tantalum or of alloys based on niobium and/or tantalum. In addition, at least a second part is made of a material which is more resistant to oxidation than niobium, tantalum or than alloys based on niobium and/or tantalum, and the material that is more resistant to oxidation has a melting point greater than 1000 DEG C and a coefficient of expansion less than or equal to 15 * 10<-6>K<-1>.
IPC 8 full level
H01J 61/36 (2006.01)
CPC (source: EP US)
H01J 61/36 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
DE 19933154 A1 20010201; DE 19933154 B4 20060323; DE 50015489 D1 20090129; EP 1114438 A1 20010711; EP 1114438 B1 20081217; JP 2003505834 A 20030212; US 6414451 B1 20020702; WO 0106541 A1 20010125
DOCDB simple family (application)
DE 19933154 A 19990720; DE 50015489 T 20000621; EP 0005695 W 20000621; EP 00943843 A 20000621; JP 2001511713 A 20000621; US 78764901 A 20010320