Transmissive optical elements including transparent plastic shell having a phosphor dispersed therein, and methods of fabricating same
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United States of America Patent
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Apr 18, 2006
Grant Date -
Mar 10, 2005
app pub date -
Sep 9, 2003
filing date -
Sep 9, 2003
priority date (Note) -
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Abstract
A transmissive optical element is fabricated by filling a mold with molten liquid that includes a transparent plastic and a phosphor additive, and allowing the molten liquid to solidify to produce the transmissive optical element having phosphor dispersed therein. Accordingly, a separate phosphor coating or phosphor-containing encapsulant need not be used. Transmissive optical elements include a shell made of transparent plastic with a phosphor dispersed therein. The phosphor may be uniformly and/or nonuniformly dispersed in the shell.
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