Patent Number: 6,528,938

Title: Fluorescent lamp having a single composite phosphor layer

Abstract: A mercury vapor discharge fluorescent lamp is provided having a single composite phosphor-containing layer. The composite layer contains both a heterogeneous mixture of halophosphors, rare earth triphosphors and colloidal alumina particles. The coating weight and relative proportion of halophosphors to triphosphors are both tunable to obtain a lamp having specific performance characteristics suitable to a particular application. The colloidal alumina particles contained in the composite layer eliminate the need for a separately applied alumina layer as is conventional in the prior art.

Inventors: Jansma; Jon B. (Pepper Pike, OH)

Assignee: General Electric Company

International Classification: H01J 61/44 (20060101); H01J 61/46 (20060101); H01J 61/38 (20060101); H01J 063/04 ()

Expiration Date: 03/04/2020