EP 0479087 B1 19951220 - High pressure discharge lamp
Title (en)
High pressure discharge lamp
Title (de)
Hochdruckentladungslampe
Title (fr)
Lampe à décharge à haute pression
Publication
Application
Priority
DE 9013735 U 19901002
Abstract (en)
[origin: EP0479087A1] The invention relates to a high-pressure discharge lamp having a rotationally symmetrical discharge vessel (19) of quartz glass, whose electrode system is fused into the bulb neck (20) by means of a molybdenum foil fusing-in technique. With the exception of the molybdenum sealing foils (24), all the metallic parts (22, 25, 26) of the electrode system which are fused into the bulb neck (20) are enveloped by profiled molybdenum foils (29, 32, 33, 34, 35, 36, 37). This prevents the quartz glass sticking to the electrode shafts (22) and the current supply leads (26) when the sealing foils (24) are being fused in. The profiled molybdenum foils (29, 32, 33, 34, 35, 36, 37) permit stress-free thermal expansion of the electrode shafts (22) and of the current supply leads (26), and also permit better alignment of the electrode system in the lamp bulb. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 61/36 (2006.01); H01J 61/50 (2006.01)
CPC (source: EP US)
H01J 61/368 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0479087 A1 19920408; EP 0479087 B1 19951220; DE 59107116 D1 19960201; DE 9013735 U1 19920206; JP H0499663 U 19920828; US 5200669 A 19930406
DOCDB simple family (application)
EP 91116145 A 19910923; DE 59107116 T 19910923; DE 9013735 U 19901002; JP 8853691 U 19911001; US 76645191 A 19910926