Back to results
US 7,358,678 B2Granted
Plasma lamp with dielectric waveguide
AssigneeLuxim Corporation
InventorsFrederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
Life of this patent
Estimating the term…
Abstract
A dielectric waveguide integrated plasma lamp is disclosed for powering a small and bright bulb with a diameter of a few millimeters. The lamp is contained within a high dielectric constant material which guides the microwaves to the bulb, provides heat isolation to the drive circuit, contains the microwaves, provides structural stability and ease of manufacturing and allows efficient energy coupling to the bulb when used as a dielectric resonant oscillator.
Claims45
A plasma lamp comprising:
- a waveguide body comprising a solid dielectric material,
- a power source configured to provide power to the waveguide body at at least one frequency that resonates within the waveguide body;
- a bulb positioned proximate the waveguide body, the bulb containing a fill to form a plasma that emits light when receiving at least a portion of the power from the waveguide body,
- at least a portion of the bulb facing the solid dielectric material of the waveguide body, wherein the portion of the bulb facing the solid dielectric material is spaced apart from the solid dielectric material;
- and
- an outer coating on the waveguide body, the outer coating comprising an electrically conductive material.
3 more elements
A plasma lamp comprising:
- a lamp body comprising a dielectric material having a dielectric constant greater than 2;
- a power source configured to provide power to the lamp body at at least one frequency that resonates within the lamp body;
- a bulb positioned proximate the lamp body, the bulb containing a fill that forms a plasma to emit light when receiving at least a portion of the power from the lamp body,
- the bulb including at least a portion of the bulb facing the dielectric material, wherein the portion of the bulb facing the dielectric material is spaced apart from solid dielectric material;
- and
- an outer coating on the lamp body, the outer coating comprising an electrically conductive material.
3 more elements
A method comprising:
- providing a lamp body comprising a solid dielectric material, the lamp body including an outer coating comprising an electrically conductive material;
- positioning a bulb proximate the lamp body with at least a portion of the bulb facing the solid dielectric material, the bulb containing a fill;
- spacing the portion of the bulb from the solid dielectric material;
- providing power to the lamp body at at least one frequency that resonates within the lamp body;
- and
- forming a plasma in the bulb to emit light.
3 more elements
Dependencies are inferred from the claim text.