Light guide for low profile luminaire
AssigneeLighting Science Group Corporation
InventorsMark Penley Boomgaarden, Ricardo Romeu, Ryan Kelley, Eric Holland
Life of this patent
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Abstract
A luminaire comprising a heat sink, a light source and a light guide. The light source is carried by the heat sink and configured to emit a source light. The light source includes a heat spreader having an inner surface and an outer surface, and a plurality of light-emitting diodes (LEDs) carried by a circuit board and disposed generally along an outer peripheral perimeter portion of the inner surface of the heat spreader, and positioned in thermal communication with the heat spreader. The light guide includes a lens with a plurality of optical elements disposed within the lens.
Claims4
A luminaire comprising:
- a heat sink;
- a light source carried by the heat sink and configured to emit a source light, the light source comprising
- a heat spreader having an inner surface and an outer surface, and
- a plurality of light-emitting diodes (LEDs) carried by a circuit board and disposed generally along an outer peripheral perimeter portion of the inner surface of the heat spreader, and positioned in thermal communication with the heat spreader;
- a light guide comprising:
- a propagation region comprising
- a lens including solid optical elements comprising light scattering particles made from at least one of glass, ceramic, rubber, silica, inorganic material, and phosphor material, and non-solid optical elements comprising liquid and gas, and
- wherein the lens comprises a plurality of micro-lenses;
- and
- wherein the light guide is configured to scatter and concentrate light in multiple directions.
Dependencies are inferred from the claim text.