PACKAGED LIGHT EMITTING DEVICES INCLUDING MULTIPLE INDEX LENSES AND METHODS OF FABRICATING THE SAME
摘要
A packaged light emitting device includes a substrate, a solid state light emitting device on the substrate, a first generally toroidal lens on the substrate and defining a cavity relative to the solid state light emitting device and having a first index of refraction, and a second lens at least partially within the cavity formed by the first lens and having a second index of refraction that is different from the first index of refraction. The second index of refraction may be higher than the first index of refraction. The lenses may be mounted on the substrate and/or may formed by dispensing and curing liquid encapsulant materials.
申请公布号
WO2007142778(A3)
申请公布日期
2008.02.07
申请号
WO2007US11325
申请日期
2007.05.10
申请人
CREE, INC.;LOH, BAN P.;MEDENDORP, JR., NICHOLAS W.;KELLER, BERND
发明人
LOH, BAN P.;MEDENDORP, JR., NICHOLAS W.;KELLER, BERND