EP 0444590 A1 19910904 - Metal vapor discharge lamp.
Title (en)
Metal vapor discharge lamp.
Title (de)
Metalldampfentladungslampe.
Title (fr)
Lampe à vapeur de décharge métallique.
Publication
Application
Priority
JP 4441590 A 19900227
Abstract (en)
Disclosure is given for a technique of preventing arc displacement from occurring in an iron-filled metal vapor discharge lamp which additionally contains magnesium so as to prevent the iron from depositing on the internal wall surface of the bulb (1) of said lamp and forming a thin iron film. Namely, in the disclosed metal vapor discharge lamp arc displacement can securely be prevented by incorporating thallium in an amount of 3.2 x 10<-><9> to 2.0 x 10<-><7> mol per cc of content volume of the bulb. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 61/20 (2006.01); H01J 61/18 (2006.01)
CPC (source: EP)
H01J 61/18 (2013.01)
Citation (search report)
- [A] US 4745335 A 19880517 - OHYAMA MASACHIKA [JP], et al
- [A] US 4074164 A 19780214 - LEYENDECKER HELMUT
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0444590 A1 19910904; EP 0444590 B1 19941102; DE 69104866 D1 19941208; DE 69104866 T2 19950330; JP 2732455 B2 19980330; JP H03250550 A 19911108
DOCDB simple family (application)
EP 91102794 A 19910226; DE 69104866 T 19910226; JP 4441590 A 19900227