H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 61/35 (2006.01) H01J 61/12 (2006.01) H01J 61/20 (2006.01) H01J 61/82 (2006.01)
Patent
CA 2079438
ABSTRACT OF THE DISCLOSURE. To provide a fill in a low-power, high-pressure discharge lamp, which is capable of emitting light within a warm white light (WDL) color or neutral white light (NDL) color, that is, in the ranges of between about 2600 to 4600 K, the fill has a relative relationship of sodium halide to scandium halide between 5 : 1 and 24 : 1, a relationship of sodium halide to thallium halide of 25 : 1 to 73 : 1, and a heat damming or heat retention or reflection coating (15, 16) is located at the end caps of the generally bulbous discharge vessel to provide for a cold spot temperature (Tc) of at least 800°C, and preferably higher.
Fromm Dietrich
Hohlfeld Andreas
Sohring Gunter
Fetherstonhaugh & Co.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
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