CERAMIC METAL HALIDE LAMPS

PROBLEM TO BE SOLVED: To suppress radiant power output degradation and a short lamp life regardless of an increased amount of halide dosage for color control.SOLUTION: A ceramic metal halide discharge lamp has a halide dosage weight to mercury weight of between 0.40 and 0.77, preferably between 0.53...

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Bibliographische Detailangaben
Hauptverfasser:	ZOLTAN KOLTAI, MUCKLEJOHN STUART ALBERT
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To suppress radiant power output degradation and a short lamp life regardless of an increased amount of halide dosage for color control.SOLUTION: A ceramic metal halide discharge lamp has a halide dosage weight to mercury weight of between 0.40 and 0.77, preferably between 0.53 and 0.68. The halide dosage amounts have the following composition ranges: between 1.84E-05 and 2.33E-05 mol/cmfor NaI, between 5.20E-06 and 6.60E-06 mol/cmfor LnI, and between 1.76E-07 and 2.23E-07 mol/cmfor TlI, where Ln is a lanthanide element.