EP 0383108 B1 19940427 - High-pressure discharge lamp for operation with an alternating current.
Title (en)
High-pressure discharge lamp for operation with an alternating current.
Title (de)
Hochdruckentladungslampe für den Betrieb mit Wechselstrom.
Title (fr)
Lampe de décharge à haute pression pour fonctionnement avec du courant alternatif.
Publication
Application
Priority
DE 3904552 A 19890215
Abstract (en)
[origin: EP0383108A1] The discharge tube contains two electrodes (6) of tungsten doped with lanthanum oxide. The electrode dome is formed such that a first truncated cone (9) tapers to a second truncated cone (10). <IMAGE>
IPC 1-7
IPC 8 full level
H01J 1/14 (2006.01); H01J 61/073 (2006.01)
CPC (source: EP US)
H01J 61/0732 (2013.01 - EP US)
Citation (examination)
DE 3723271 A1 19890126 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
Designated contracting state (EPC)
CH DE GB LI NL
DOCDB simple family (publication)
EP 0383108 A1 19900822; EP 0383108 B1 19940427; CA 2008646 A1 19900815; DE 3904552 A1 19900816; DE 59005489 D1 19940601; JP H02242558 A 19900926; US 5081396 A 19920114
DOCDB simple family (application)
EP 90102024 A 19900201; CA 2008646 A 19900126; DE 3904552 A 19890215; DE 59005489 T 19900201; JP 115690 A 19900109; US 46798990 A 19900122