Patent ID: 7880402
Filing Date: 2011-02-01
Classification: H01J,Y02B

Abstract:
1. An electrodeless plasma lamp comprising: a lamp body comprising a dielectric material having a relative permittivity greater than 2, the lamp body including a recess extending from a lower surface of the lamp body into the lamp body towards an upper surface of the lamp body; a bulb adjacent to the upper surface of the lamp body, the bulb containing a fill that forms a plasma when RF power is coupled to the fill from the lamp body; an elongate RF feed extending into the lamp body; a conductive component having a lower end and an upper end, the lower end being electrically coupled to an electrically conductive material substantially surrounding the lamp body, and the upper end being proximate the bulb; a radio frequency (RF) power source for coupling power into the lamp body through the RF feed and wherein the RF feed is spaced from and extends substantially parallel to the conductive component.