Fluorescent lamp having reflective layer

摘要

A reflector fluorescent lamp (8) with a reflective layer (20) between the light-transmissive envelope (10) and the phosphor layer(s) (22). The reflective layer has a coating weight of at least 5, more preferably 6-8, mg/cm<2> and is a blend of gamma alumina and alpha alumina, preferably 7-80 weight percent gamma alumina and 20-93 weight percent alpha alumina, more preferably 30-40 weight percent gamma alumina and 60-70 weight percent alpha alumina. The reflective layer finds particular utility in an electrodeless fluorescent lamp. <IMAGE>