Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1987-04-29
1989-04-25
Wieder, Kenneth
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313489, 2523014H, 2523016F, H01J 170, H01J 6146
Patent
active
048251240
ABSTRACT:
A phosphor particle having a non-particulate, conformal aluminum oxide coating and a fluorescent lamp incorporating aluminum oxide coated phophor particles are disclosed. A method for improving the lumen maintenance of a fluorescent lamp is also disclosed. The method involves applying a non-particulate, conformal aluminum oxide coating to the outer surface of individual particles of a finely-divided fluorescent lamp phosphor, applying the coated phosphor particles to a fluorescent lamp envelope, and processing the phosphor coated envelope into a finished lamp.
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Finnegan Martha Ann
GTE Laboratories Incorporated
Wieder Kenneth
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