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US 8,110,988 B2Granted
Plasma lamp with dielectric waveguide
AssigneeLuxim Corporation
InventorsFrederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
Life of this patent
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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.
Claims18
A plasma lamp comprising:
- a lamp body;
- a power source coupled to the lamp body by a feed to provide power to the lamp body, wherein the power is provided at a resonant frequency for the lamp body;
- and
- a bulb containing a fill, wherein
- a volume of the bulb is less than the volume of the lamp body, and
- a portion of the fill is located above a plane in which an upper surface of the lamp body lies, and
- the portion of the fill is to receive at least a portion of the power from the lamp body to form a light-emitting plasma.
4 more elements
A method of generating light, the method comprising:
- providing a lamp body;
- providing a power source coupled to the lamp body by a feed in contact with the lamp body, the power being provided at a resonant frequency for the lamp body;
- providing a bulb having a volume less than a volume of the lamp body;
- applying power from the power source to the lamp body through the feed;
- and
- coupling at least a portion of the power from the lamp body a portion of the fill that is located above a plane in which an upper surface of the lamp body lies to form a light-emitting plasma.
3 more elements
Dependencies are inferred from the claim text.