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LED LAMP WITH COLOR-MIXING CAVITY

  • US 20130154519A1
  • Filed: 12/16/2011
  • Published: 06/20/2013
  • Est. Priority Date: 12/16/2011
  • Status: Abandoned Application
First Claim
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1. A white-light-emitting device comprising:

  • a plurality of ultraviolet or blue light-emitting diodes (LEDs) having at least one emission surface;

    a conversion coating spaced away from but enveloping the at least one emission surface to define a first mixing cavity therearound, the conversion coating converting a color of at least a portion of the light emitted by the plurality of LEDs to a different color;

    at least one secondary LED, emitting light of a color different from ultraviolet and blue, spaced away from the first mixing cavity; and

    a diffuser spaced away from but enveloping the conversion coating and the secondary LED to define therearound a second mixing cavity that is unfilled, wherein mixing of the converted light and the light from the at least one secondary LED produces white light that is emitted through the diffuser.

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