EP 2919257 B1 20170405 - DISCHARGE LAMP AND METHOD FOR MANUFACTURING SAME
Title (en)
DISCHARGE LAMP AND METHOD FOR MANUFACTURING SAME
Title (de)
ENTLADUNGSLAMPE UND VERFAHREN ZUR HERSTELLUNG DERSELBEN
Title (fr)
LAMPE À DÉCHARGE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- JP 2012245504 A 20121107
- JP 2013071730 W 20130809
Abstract (en)
[origin: EP2919257A1] According to one embodiment, there is provided a discharge lamp including a metal foil 31 including a first surface and a second surface located on the front and the back and an electrode 32 connected to the metal foil 31. A welding mark 36 is formed such that the first surface and at least a part of the electrode 32 overlap each other. The welding mark 36 has an elliptical shape long in the axial direction of the electrode 32 when viewed from a second surface side 312. A ratio L1/L2 of a first length L1 in the axial direction and a second length L2 in a direction orthogonal to the axial direction is in a relation of 1.08‰¤L1/L2‰¤1.56. Consequently, a discharge lamp excellent in joining strength and a manufacturing method for the discharge lamp are provided.
IPC 8 full level
H01J 5/48 (2006.01); H01J 9/28 (2006.01); H01J 9/32 (2006.01); H01J 61/36 (2006.01); H01J 61/82 (2006.01)
CPC (source: EP)
H01J 5/48 (2013.01); H01J 9/28 (2013.01); H01J 9/326 (2013.01); H01J 61/368 (2013.01); H01J 61/827 (2013.01)
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
DOCDB simple family (publication)
EP 2919257 A1 20150916; EP 2919257 A4 20160615; EP 2919257 B1 20170405; JP 2014096215 A 20140522; WO 2014073253 A1 20140515
DOCDB simple family (application)
EP 13852720 A 20130809; JP 2012245504 A 20121107; JP 2013071730 W 20130809