EP 3031071 A1 20160615 - HIGH-PRESSURE DISCHARGE LAMP FOR VEHICLE HEADLIGHTS
Title (en)
HIGH-PRESSURE DISCHARGE LAMP FOR VEHICLE HEADLIGHTS
Title (de)
HOCHDRUCKENTLADUNGSLAMPE FÜR FAHRZEUGSCHEINWERFER
Title (fr)
LAMPE À DÉCHARGE À HAUTE PRESSION POUR PHARE DE VÉHICULE
Publication
Application
Priority
- DE 102014204932 A 20140317
- EP 2015052273 W 20150204
Abstract (en)
[origin: WO2015139876A1] The invention relates to a high-pressure discharge lamp for vehicle headlights, comprising a gas-tightly sealed discharge container (10) having a discharge chamber (106), in which electrodes (11, 12) and a mercury-free filling for generating a gas discharge are enclosed. The filling contains at least xenon and halides of sodium, scandium, indium, and zinc, and the quotient of the molar fraction of sodium and the molar fraction of scandium in the halide proportion of the filling has a value in the range of 2 to 3, wherein the amount of halides in the discharge chamber (106) has a value in the range of 8 to 11 micrograms per cubic millimeter of the discharge chamber volume, the zinc halide proportion has a value in the range of 16 to 25 weight percent based on the total amount of halides in the discharge chamber (106), the indium halide proportion has a value in the range of 1 to 3 weight percent based on the total amount of halides in the discharge chamber (106), and the cold-filling pressure of xenon is in the range of 1.1 to 1.5 megapascals.
IPC 8 full level
H01J 61/12 (2006.01)
CPC (source: EP KR)
H01J 61/125 (2013.01 - EP KR); H01J 61/827 (2013.01 - KR)
Citation (search report)
See references of WO 2015139876A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014204932 A1 20150917; CN 105814661 A 20160727; CN 105814661 B 20171027; EP 3031071 A1 20160615; EP 3031071 B1 20170802; KR 20160132812 A 20161121; WO 2015139876 A1 20150924
DOCDB simple family (application)
DE 102014204932 A 20140317; CN 201580002217 A 20150204; EP 15702286 A 20150204; EP 2015052273 W 20150204; KR 20167011780 A 20150204