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Optical integrating chamber lighting using multiple color sources

  • US 7,148,470 B2
  • Filed: 12/06/2005
  • Issued: 12/12/2006
  • Est. Priority Date: 06/23/2003
  • Status: Active Grant
First Claim
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1. A lighting system, comprising:

  • a dome having a reflective surface; and

    a plate having a substantially flat reflective surface facing the reflective surface of the dome, coupled to the dome so as to form a reflective chamber between the reflective surfaces of the dome and plate,at least a portion of one of the reflective surfaces of the dome and plate being diffusely reflective;

    an aperture for emission of light from the chamber;

    a plurality of light emitting diodes (LEDs), each respective one of the LEDs being coupled to emit light into the chamber in a direction toward a reflective surface of the dome or plate so that light emissions from the respective LED reflect at least once within the chamber before emission through the aperture,wherein reflections of light from the LEDs within the chamber combines light from the LEDs for the emission through the aperture toward a region intended for humanly perceptible lighting by emitted combined light.

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