Patent ID: 9018830
Filing Date: 2015-04-28
Classification: C09K,H01J

Abstract:
1. A lamp comprising: a lamp envelope enclosing a discharge space and having an inner surface; an ionizable medium within said lamp envelope comprising mercury and an inert gas; first and second electrodes; and a phosphor blend disposed on said inner surface, said blend comprising at least 80% non-rare earth broad band phosphors, based on the total weight percent of the phosphor blend, including: from about 70 wt % to about 90 wt % of a non-rare earth red phosphor, from about 5 wt % to about 25 wt % of a non-rare earth blue phosphor, and from about 1 wt % to 20 wt % of a rare earth green-blue phosphor, wherein said lamp simultaneously exhibits a CRI of at least 87 and a CCT of not more than 4500K.