Plasma lamp with field-concentrating antenna

Abstract

An electrodeless plasma lamp is described comprising a lamp body including a solid dielectric material. The lamp includes a bulb received at least partially within an opening in the solid dielectric material and a radio frequency (RF) feed configured to provide power to the solid dielectric material. A conductive material is provided adjacent to the bulb to concentrate the power proximate the bulb. The conductive material may be located below an upper surface of the solid dielectric material. The conductive material may modify at least a portion of an electric field proximate the bulb so that the portion of the electric field is oriented substantially parallel to an upper surface of the lamp body.

1 . An electrodeless plasma lamp comprising:
 a lamp body comprising a solid dielectric material;   a bulb received at least partially within an opening in the solid dielectric material;   a radio frequency (RF) feed configured to provide power to the solid dielectric material; and   a conductive material adjacent to the bulb to concentrate the power proximate the bulb.