Arc discharge lamp having improved lumen maintenance

Details Arc discharge lamp having improved lumen maintenance Arc discharge lamp having improved lumen maintenance

1981-01-27

1987-01-27

Sikes, William L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 3100, H01J 3126

Patent

active

046396373

ABSTRACT:
Lumen maintenance of fluorescent lamps is improved by overcoating the phosphor layer with a coating of submicron size alumina having a weight greater than 160 micrograms per square centimeter.

REFERENCES:
patent: 3886396 (1975-05-01), Hammer et al.
patent: 4058639 (1977-11-01), Schreurs
patent: 4079288 (1978-03-01), Maloney et al.

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