Patent ID: 7429818

Claim:
A lamp comprising: a waveguide having a body, the body comprising at least one dielectric material and having at least one surface determined by a waveguide outer surface, the dielectric material having a dielectric constant greater than approximately 2; a power source for providing power at a frequency that resonates within the body, wherein the frequency is within the range of about 0.25 GHz to 30 GHz; a first probe coupled to the body to provide the power into the body from the power source at the resonant frequency; the body having a lamp chamber depending from said waveguide outer surface; a bulb containing a fill mixture which when receiving power from the resonating body forms a light-emitting plasma; the bulb including at least one transparent wall forming an elongate side of the bulb; at least a portion of the wall positioned within the lamp chamber spaced apart from the body of the waveguide, the wall positioned within the lamp chamber such that light is transmitted through the wall into the lamp chamber and from the lamp chamber out of the waveguide body.