Fluorescent lamp with improved CRI and brightness
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United States of America Patent
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Nov 17, 1998
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N/A
app pub date -
Oct 28, 1992
filing date -
Oct 28, 1992
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Abstract
A fluorescent lamp has a coating on the interior surface of the glass envelope comprising an alkaline earth metal halophosphate phosphor and a quad-phosphor blend wherein the combination of phosphors result in a predetermined color point from about 2700 to about 4200 K on or near the Planckian locus where the alkaline earth metal halophosphate phosphor comprises a blend of halophosphate phosphors having a color temperature substantially matching the color temperature of the quad-blend which includes an europium activated aluminate as a phosphor component.
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