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US 7,362,056 B2Granted
Plasma lamp with dielectric waveguide
AssigneeLuxim Corporation
InventorsFrederick M. Espiau, Chandrashekhar J. Joshi, Yian Chang
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Abstract
A dielectric waveguide integrated plasma lamp (DWIPL) with a body consisting essentially of at least one dielectric material having a dielectric constant greater than approximately 2, and having a shape and dimensions such that the body resonates in at least one resonant mode when microwave energy of an appropriate frequency is coupled into the body. A bulb positioned in at least one lamp chamber in the body contains a gas-fill which when receiving energy from the resonating body forms a light-emitting plasma.
Claims21
A plasma lamp comprising:
- a waveguide body having a dielectric constant greater than 2;
- a power source coupled to the waveguide body to provide power to the waveguide body at at least one frequency that resonates within the waveguide body;
- a bulb containing a fill to form a plasma to emit light when the power is provided to the waveguide body, the bulb having a single axis of rotational symmetry and positioned proximate a central axis of the waveguide body;
- and
- the waveguide body having a length substantially parallel to the central axis and a width transverse to the length, wherein the width of the waveguide body is greater than the length of the waveguide body.
2 more elements
Dependencies are inferred from the claim text.