Patent ID: 8294382

Claim:
An electrodeless plasma lamp comprising: a resonant structure having a quarter wave resonant mode, the resonant structure including: an inner conductor; an outer conductor; and a solid dielectric material between the inner conductor and the outer conductor; a source of radio frequency (RF) power configured to provide RF power to the resonant structure at about the resonant frequency for the quarter wave resonant mode; a bulb containing a fill that forms a plasma when the RF power is coupled to the fill, the bulb positioned proximate to a non-conductive surface of the solid dielectric material, wherein at least one end of the bulb protrudes outside of the resonant structure; and an electrically-conductive shield to reduce electromagnetic interference from the lamp, the shield being positioned external to the resonant structure and proximate to the bulb, a surface of the shield being distal to the bulb.