EP 0442704 A2 19910821 - Metal halide lamp and method of making the same.
Title (en)
Metal halide lamp and method of making the same.
Title (de)
Metallhalogenidlampe und Verfahren zu ihrer Herstellung.
Title (fr)
Lampe aux halogénures métalliques et son procédé de fabrication.
Publication
Application
Priority
JP 3645790 A 19900216
Abstract (en)
A metal halide lamp is made by coating the inner surface of a luminous tube made of quartz glass with hafnium oxide, uranium oxide, hafnium oxide partially stabilized with yttrium oxide or uranium oxide partially stabilized with yttrium oxide by introducing therein a vapour of metal chelate containing hafnium (Hf), uranium (U) or yttrium (Y) and oxygen (O2), nitrogen suboxide (N2O) or ozone (O3) as a reaction gas, and sealing the inside of the luminous tube with a halogenide of alkali metal, mercury and argon.
IPC 1-7
IPC 8 full level
H01J 9/20 (2006.01); H01J 61/35 (2006.01)
CPC (source: EP)
H01J 9/20 (2013.01); H01J 61/35 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0442704 A2 19910821; EP 0442704 A3 19920408; CA 2036485 A1 19910817; JP H03238747 A 19911024
DOCDB simple family (application)
EP 91301128 A 19910212; CA 2036485 A 19910215; JP 3645790 A 19900216