PLASMA LAMP WITH CONDUCTIVE MATERIAL POSITIONED RELATIVE TO RF FEED
First Claim
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1. An electrodeless plasma lamp comprising:
- a lamp body comprising a dielectric material having a relative permittivity greater than 2;
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 at least one electrically conductive material of the lamp body.
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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.
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Citations
26 Claims
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1. An electrodeless plasma lamp comprising:
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a lamp body comprising a dielectric material having a relative permittivity greater than 2;
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 at least one electrically conductive material of the lamp body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrodeless plasma lamp comprising:
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a lamp body comprising a dielectric material having a relative permittivity greater than 2;
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
a RF power source for coupling power into the lamp body through the 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 at least a first electrically conductive material of the lamp body. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification