Light emitting diode illumination system

  • US 9,574,722 B2
  • Filed: 05/27/2015
  • Issued: 02/21/2017
  • Est. Priority Date: 08/06/2007
  • Status: Active Grant
First Claim
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1. An illumination system comprising:

  • a first light source comprising a plurality of emitters of excitation light of an excitation color and a luminescent material positioned to receive the excitation light from all of the plurality of emitters of excitation light and emit light of a first color different than the excitation color whereby the first light source outputs a first light beam of said first color;

    a second light source, wherein the second light source includes a Light Emitting Diode (LED), wherein the second light source emits a second light beam of a second color different than the first color;

    a third light source, wherein the third light source includes another Light Emitting Diode (LED), wherein the third light source emits a third light beam of a third color different than the first color and second color;

    a plurality of reflective optical components positioned to combine the first light beam of the first color, the second light beam of the second color, the third light beam of the third color, on a main optical axis of the illumination system to generate a beam of white light; and

    an output system positioned to receive said beam of white light and configured to focus said beam of white light into a light guide.

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