EP 1134776 A2 20010919 - High pressure mercury vapour discharge lamp with reduced sensitivity to variations in operating parameters
Title (en)
High pressure mercury vapour discharge lamp with reduced sensitivity to variations in operating parameters
Title (de)
Hochdruckquecksilberdampfentladungslampe mit verminderter Empfindlichkeit gegenüber den Änderungen von Betriebsparametern
Title (fr)
Lampe à décharge à vapeur de mercure à haute pression avec une sensibilité réduite aux variations des paramètres de fonctionnement
Publication
Application
Priority
US 44160199 A 19991117
Abstract (en)
A high pressure mercury vapor discharge lamp is provided. The lamp has a discharge vessel (3) formed from heat-resistant material. At least two electrodes (5) extend into the discharge vessel (3) and are electrically connected to external current supply leads (9). The lamp has a fill in the discharge vessel (3) which includes a noble gas, mercury and an additive composition of metal halides. This additive composition of metal halides comprises an alkali metal halide, wherein the alkali metal halide is a sodium halide, a cesium halide, or a mixture of sodium halide and cesium halide, at least one halide of a metal providing a line emission, at least one halide of a rare earth metal providing an emission in the purple spectral range, at least one halide of a rare earth metal providing an emission in the green spectral range. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 61/12 (2006.01); H01J 61/20 (2006.01); H01J 61/82 (2006.01)
CPC (source: EP)
H01J 61/125 (2013.01); H01J 61/827 (2013.01); H01J 61/34 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00310129 A 20001115; JP 2000350344 A 20001117