Low frequency electrodeless plasma lamp
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United States of America Patent
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Oct 23, 2012
Grant Date -
Jul 8, 2010
app pub date -
Jan 6, 2010
filing date -
Jan 6, 2009
priority date (Note) -
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Abstract
In various exemplary embodiments, an electrodeless plasma lamp includes a bulb configured to be coupled to a source of radio frequency (RF) power. The bulb contains a fill that forms a plasma when the RF power is coupled to the fill. An electrically-conductive convex shield is positioned proximate to the bulb with a convex surface of the shield being distal to the bulb. A resonant structure having a quarter wave resonant mode includes a lamp body having a dielectric material having a relative permittivity greater than 2 with an inner conductor and an outer conductor. The source of RF power is configured to provide RF power to the lamp body at about a resonant frequency for the resonant structure.
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