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Patent Searching and Data


Title:
LIGHT EMITTING DIODE ARRAYS WITH IMPROVED LIGHT EXTRACTION
Document Type and Number:
WIPO Patent Application WO2005101446
Kind Code:
A3
Abstract:
In accordance with the invention, an illumination device comprises a highly thermally conductive substrate having a surface, a plurality of light emitting diodes (LEDs) supported by the surface and arranged in an array to provide illumination. At least one reflective barrier at least partially surrounds each LED. The reflective barrier is shaped to reflect away from the LED light emitted by other LEDs in the array. Advantageously the substrate and reflective barrier are thermally coupled to a heat spreader to dissipate heat generated by the LEDs. The substrate preferably comprises an LTTC-M heat spreader, and the reflective thermal barriers preferably comprise metal ridges or cups.

Inventors:
AMAYA EDMAR (US)
MAZZOCHETTE JOSEPH (US)
Application Number:
PCT/US2005/012227
Publication Date:
August 03, 2006
Filing Date:
April 11, 2005
Export Citation:
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Assignee:
LAMINA CERAMICS INC (US)
AMAYA EDMAR (US)
MAZZOCHETTE JOSEPH (US)
International Classes:
H01J1/62; F21K99/00; H01L33/60; H01L33/62
Foreign References:
US5660461A1997-08-26
US6318886B12001-11-20
US20040222433A12004-11-11
US3711789A1973-01-16
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