Microwave energized plasma lamp with dielectric waveguide
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United States of America Patent
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Feb 28, 2012
Grant Date -
Oct 1, 2009
app pub date -
Feb 25, 2009
filing date -
Jul 31, 2000
priority date (Note) -
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Abstract
A plasma lamp including a waveguide body comprising at least one dielectric material. The body is coupled to a microwave power source which causes the body to resonate in at least one resonant mode. A lamp chamber integrated with the body contains a bulb with a fill forming a light-emitting plasma when the chamber receives power from the resonating body. A bulb either is self-enclosed or an envelope sealed by a window or lens covering the chamber aperture. Embodiments disclosed include lamps having a drive probe and a feedback probe, and lamps having a drive probe, feedback probe and start probe, which minimize power reflected from the body back to the source.
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