EP 1198823 A1 20020424 - GAS DISCHARGE LAMP WITH IGNITION ASSISTING ELECTRODES, ESPECIALLY FOR AUTOMOBILE HEADLIGHTS
Title (en)
GAS DISCHARGE LAMP WITH IGNITION ASSISTING ELECTRODES, ESPECIALLY FOR AUTOMOBILE HEADLIGHTS
Title (de)
GASENTLADUNGSLAMPE MIT ZÜNDHILFSELEKTRODEN, INSBESONDERE FÜR KRAFTFAHRZEUGSCHEINWERFER
Title (fr)
LAMPE A DECHARGE GAZEUSE COMPRENANT DES ELECTRODES AUXILIAIRES D'ALLUMAGE, NOTAMMENT DESTINEE A DES PHARES D'AUTOMOBILE
Publication
Application
Priority
DE 0000910 W 20000328
Abstract (en)
[origin: WO0173817A1] The invention relates to a gas discharge lamp with a burner provided with a gas discharge vessel (14) with a cavity (15) which is filled with gas and other substances. Two electrodes (16, 18) between which an arc is struck when the gas discharge lamp is operated project into said cavity (15). On the outside of the discharge vessel (14), in the area of the cavity (15), two supplementary electrodes (40, 42) having different polarity are disposed opposite one another. Said supplementary electrodes (40, 42) are produced by coating the outside of the discharge vessel (14) with an electroconductive material. Before and optionally also during the ignition of the gas discharge lamp a high-frequency high voltage is applied to the supplementary electrodes (40, 42), thereby facilitating the ignition of the gas discharge lamp.
IPC 1-7
IPC 8 full level
H01J 61/54 (2006.01)
CPC (source: EP KR US)
H01J 61/54 (2013.01 - KR); H01J 61/547 (2013.01 - EP US)
Citation (search report)
See references of WO 0173817A1
Designated contracting state (EPC)
CH DE ES FR GB IT LI
DOCDB simple family (publication)
WO 0173817 A1 20011004; AU 4909900 A 20011008; AU 777640 B2 20041028; EP 1198823 A1 20020424; JP 2003529194 A 20030930; KR 100802968 B1 20080214; KR 20020019038 A 20020309; US 6906462 B1 20050614
DOCDB simple family (application)
DE 0000910 W 20000328; AU 4909900 A 20000328; EP 00930982 A 20000328; JP 2001571448 A 20000328; KR 20017015190 A 20011127; US 97972902 A 20020312