Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Waqidi Falicoff0
William A. Parkyn0
Date of Patent
September 13, 2011
0Patent Application Number
123873410
Date Filed
May 1, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An embodiment of a collimating downlight has front-mounted blue LED chips facing upwards, having a heat sink on the back of the LED chips exposed in ambient air. The LED chips are mounted in a collimator that sends their blue light to a remote phosphor situated near the top of the downlight can. Surrounding the remote phosphor is a downward-facing reflector that forms a beam from its stimulated emission and reflected blue light. The phosphor thickness and composition can be adjusted to give a desired color temperature.
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