EP 0377899 A2 19900718 - Lighting discharge lamp.
Title (en)
Lighting discharge lamp.
Title (de)
Beleuchtungsentladungslampe.
Title (fr)
Lampe d'éclairage à décharge.
Publication
Application
Priority
JP 367089 A 19890112
Abstract (en)
A lighting discharge lamp includes a light-emitting tube in which a halogen and lutetium are sealed together with mercury and a rare gas. The sealed amount of lutetium falls in a range of from 2 x 10<-><7> mol/cc to 2 x 10<-><5> mol/cc. The premature clouding of the light-emitting tube can be avoided to enhance its luminous flux utilization and the variations of its color temperature depending on those of supply power for operation can be reduced to a small extent.
IPC 1-7
IPC 8 full level
H01J 61/20 (2006.01); H01J 61/12 (2006.01); H01J 61/86 (2006.01)
CPC (source: EP)
H01J 61/12 (2013.01); H01J 61/86 (2013.01)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0377899 A2 19900718; EP 0377899 A3 19910515; JP H02186552 A 19900720
DOCDB simple family (application)
EP 89124095 A 19891228; JP 367089 A 19890112