Fluorescent lamps having reduced interference colors

H - Electricity – 01 – J

Patent

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H01J 61/42 (2006.01) H01J 61/40 (2006.01)

Patent

CA 2082710

LD 10386 FLUORESCENT LAMPS HAVING REDUCED INTERFERENCE COLORS ABSTRACT OF THE DISCLOSURE Fluorescent lamps having a tin oxide layer protected by a layer of colloidal alumina having a median particle diameter below 0.4 micron exhibit an objectionable pearlescent coloration if the alumina layer thickness is within the range of 500-8,000 .ANG.. this coloration is reduced to an acceptable level by incorporating from 10-30 wt. % of particulate alumina having a median diameter above 0.75 micron in the colloidal alumina.

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