Fluorescent lamp with improved CRI and brightness

Details Fluorescent lamp with improved CRI and brightness Fluorescent lamp with improved CRI and brightness

1992-10-28

1998-11-17

Mengistu, Amare

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313485, 313486, H01J 162

Patent

active

058381015

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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