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Illumination Device with Light Emitting Diodes and Moveable Light Adjustment Member

  • US 20090103293A1
  • Filed: 10/10/2008
  • Published: 04/23/2009
  • Est. Priority Date: 10/17/2007
  • Status: Active Grant
First Claim
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1. A light emitting diode illumination device comprising:

  • a board;

    at least one light emitting diode mounted on the board;

    at least one reflective sidewall coupled to the board and configured to surround the at least one light emitting diode, the at least one reflective sidewall defines a light mixing cavity;

    a first type of wavelength converting material covering a first wavelength converting area of the light mixing cavity that is exposed to light produced by the at least one light emitting diode;

    a movable color adjustment member positioned to alter the exposure of the first wavelength converting area to the light emitted by the at least one light emitting diode; and

    an output port through which light within the light mixing cavity is transmitted.

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