CATHODE FOR DISCHARGE LAMP AND DISCHARGE LAMP USING THE SAME
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Aug 20, 2009
filing date -
Aug 20, 2008
priority date (Note) -
Abandoned
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Abstract
A cathode for a discharge lamp contains emitter material, wherein a carbide layer is formed on an outer surface of the cathode, the carbide layer is formed on an area extending from a tip portion of the cathode, and two or more grooves extending toward the tip portion of the cathode are formed on the area where the carbide layer is formed.
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