Luminaire including an electrodeless discharge lamp as a light source.

摘要

An electrodeless discharge lamp (20) comprising an arc tube (35) constructed of a light-transmissive material. An exciting structure (40) surrounds the arc tube (35) and is energizable with radio frequency current to develop an arc discharge (42). A reflective coating (80) of non-conducting insulating material is disposed on the arc tube wall (36) and is located to reflect light from the arc discharge (42) through the arc tube (35). The reflective coating (80) and the uncoated portion of the arc tube wall (36) are surrounded by the exciting structure (40) so that light from the arc discharge (42) may reach the reflective coating (80) without blockage by the exciting structure (40) and, following reflection by the coating (80), travel through the uncoated portion of the arc tube wall (36). <IMAGE>