Light-emitting diode lamps with thermally conductive lenses
AssigneeFord Global Technologies, LLC
InventorsPaul Kenneth Dellock, Stuart C. Salter, Talat Karmo, Michael Musleh
Life of this patent
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Abstract
A light-emitting diode (LED) lamp is provided that includes: an LED source coupled to a housing; and a lens over the source and coupled to the housing. The lens, or a portion of the lens, includes a plurality of glass beads, each having a metal-containing coating (e.g., a coating comprising at least one of Ni, Al, Cu, In and brass) and dispersed in a polymeric matrix (e.g., an acrylic or a polycarbonate). Further, the lens has a thermal conductivity of at least about 2 W/m*K and an optical transmissivity of at least 80%.
Claims20
A light-emitting diode (LED) lamp, comprising:
- an LED source coupled to a housing;
- and
- a lens over the source and coupled to the housing, the lens comprising a plurality of glass beads, each with a metal-containing coating and dispersed in a polymeric matrix,
- wherein the lens has a thermal conductivity of at least about 2 W/m*K and an optical transmissivity of at least 80%.
A light-emitting diode (LED) lamp, comprising:
- an LED source coupled to a housing;
- and
- a lens over the source and coupled to the housing, wherein a portion of the lens comprises a plurality of glass beads, each having a metal-containing coating and dispersed in a polymeric matrix,
- wherein the lens has a thermal conductivity of at least about 2 W/m*K and an optical transmissivity of at least 80%.
A lens for a light-emitting diode (LED) lamp, comprising:
- a lens for an LED source comprising glass beads dispersed in a polymeric matrix, the beads comprising a metal-containing coating having a thickness from about 250 to 750 Angstroms and at least one of Ni, Al, Ag, Cu, In and brass,
- wherein the lens has a thermal conductivity of at least about 2 W/m*K and an optical transmissivity of at least 80%.
Dependencies are inferred from the claim text.