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Illumination device with light emitting diodes and moveable light adjustment member

  • US 8,317,359 B2
  • Filed: 06/22/2011
  • Issued: 11/27/2012
  • Est. Priority Date: 10/17/2007
  • Status: Active Grant
First Claim
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1. An 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;

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

    a color selection plate movably coupled to the at least one reflective sidewall and covering the output port, the color selection plate comprising a substrate having a plurality of areas with different wavelength converting material compositions, wherein the color selection plate is movable to align a selected one of the plurality of areas with the output port to change a color of the light transmitted through the output port.

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