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Thin luminaire for general lighting applications

  • US 7,494,246 B2
  • Filed: 06/06/2007
  • Issued: 02/24/2009
  • Est. Priority Date: 06/06/2007
  • Status: Active Grant
First Claim
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1. A luminaire for illuminating a remote object comprising:

  • a cavity having a reflective base surface and reflective side walls;

    a plurality of light emitting diodes (LEDs) affixed within the cavity; and

    the cavity having a flat reflective light output surface, opposite to the reflective base surface, containing a plurality of light emitting holes, there being more holes than LEDs, wherein the holes make up at least 10% of a total surface area of the top surface of the cavity, wherein light emitted by the luminaire in the vicinity of substantially each hole has a controlled dispersion angle of between about 45-90 degrees, as measured by the angle where a light brightness is one-half of a peak brightness within the angle, wherein a lens is disposed over each hole to provide the control dispersion angle,the cavity having a depth of less than 5 cm,wherein light emitted by the luminaire provides a substantially uniform illumination of a flat object a particular distance away from the flat reflective light output surface of the luminaire.

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