AN IMPROVED PLASMA LAMP AND METHOD

摘要

A plasma lamp and method having high efficacy, high color rendering index, and a desirable correlated color temperature with improved color consistency from lamp to lamp. The lamp may include a vaporizable fill material comprising halides of sodium and scandium and a filter formed from a vitreous material containing a dopant. In one aspect, the filter is formed by a glass shroud containing neodymium oxide that reduces the transmission of yellow light.