Patent ID: 7494246
Filing Date: 2009-02-24
Classification: F21S,F21V,F21Y

Abstract:
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.