White light emitting lighting system
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United States of America Patent
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Issued Date -
Apr 5, 2007
app pub date -
Aug 27, 2004
filing date -
Sep 15, 2003
priority date (Note) -
Abandoned
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Abstract
A white light emitting lighting system, comprising a blue or UV light emitting diode and a coating comprising a yellow luminescent phosphor having a peak emission wavelength greater than 550 nm, wherein the phosphor comprises a S.sub.r2-X-Y-ZCa.sub.yBa.sub.zSiO.sub.4:Eu.sub.x phosphor, and wherein 0<=0.06 and 0<(3y+z)<=0.5. If the diode is a UV light emitting diode the coating further comprises a blue luminescent phosphor.
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