Contaminant getter on UV reflective base coat in fluorescent lamps

摘要

An electric lamp is provided having a luminescent layer on the lamp envelope that produces visible light when impinged by ultraviolet radiation generated within the lamp. An undercoat for the electric lamp increases the luminous efficacy of the lamp. The undercoat comprises a particulate non-fluorescent material derived from a sintered mixture of an aluminum oxide material and a getter material which reacts with contaminants present in the lamp.