LOW PROFILE LUMINAIRE AND ASSOCIATED SYSTEMS AND METHODS

摘要

A luminaire comprising a heat sink, a light source carried by the heat sink to emit a source light and comprising a heat spreader having inner and outer surfaces and a plurality of LEDs carried by a circuit board and disposed generally along a periphery of the inner surface and positioned in thermal communication therewith. The luminaire comprises a reflector disposed coextensively with the LEDs and comprising an aperture in a medial region thereof, an outer edge of the aperture defining an inner rim of the reflector and a light guide positioned between the reflector and the light source, the light guide characterized by a height defined as the distance between the inner surface of the heat spreader and a plane defined by the inner rim of the reflector, the light guide configured to change the source light into a shaped light that is directed through the aperture.

主权项

1. 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, anda 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 therewith; a reflector disposed generally coextensive with the plurality of LEDs and comprising an aperture formed in a medial region thereof, an outer edge of the aperture defining an inner rim of the reflector; and a light guide positioned between the reflector and the light source, the light guide characterized, at any position along its width, by a height defined as the distance between the inner surface of the heat spreader and a plane defined by the inner rim of the reflector, the light guide configured to change the source light into a first shaped light; wherein the source light is emitted from the light source incident upon the reflector, and is changed by the light guide into the first shaped light that is directed by the light guide through the aperture.