Plasma lamp with conductive material positioned relative to RF feed
AssigneeLuxim Corporation
InventorsFrederick M. Espiau, Marc DeVincentis, Yian Chang
Life of this patent
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Abstract
In an example embodiment, an electrodeless plasma lamp is provided which comprises a lamp body comprising a dielectric material having a relative permittivity greater than 2, and a bulb adjacent to 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 RF feed is coupled to the lamp body and a radio frequency (RF) power source for coupling power into the lamp body through the RF feed is provided. A shortest distance between an end of the bulb and a point on the RF feed traverses at least one electrically conductive material of the lamp body.
Claims26
An electrodeless plasma lamp comprising:
- a lamp body comprising a dielectric material having a relative permittivity greater than 2, the lamp body having a planar lower surface, a lower recess extending upwardly from the lower surface;
- a bulb adjacent to 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 RF feed coupled to the lamp body;
- and
- a radio frequency (RF) power source for coupling power into the lamp body through the RF feed and wherein a shortest distance between an end of the bulb and a point on the RF feed traverses a portion of the lower recess and at least one electrically conductive material of the lamp body.
An electrodeless plasma lamp comprising:
- a lamp body comprising a dielectric material having a relative permittivity greater than 2, the lamp body having a planar lower surface, a lower recess extending upwardly from the lower surface;
- a bulb adjacent to the lamp body, the bulb containing a fill that forms a plasma when RF power is coupled to the fill from the lamp body;
- a first RF feed coupled to the lamp body to provide radio frequency (RF) power;
- a second RF feed coupled to the lamp body to obtain feedback from the lamp body;
- and
- an RF power source for coupling power into the lamp body through the first RF feed, the RF power source configured to provide RF power at a frequency that is within the resonant bandwidth of a resonant mode for the lamp body, wherein a distance from an end of the second RF feed to a mid-point of the first RF feed traverses a portion of the lower recess and at least a first electrically conductive material of the lamp body.
Dependencies are inferred from the claim text.