Patent ID: 8573823

Claim:
A luminaire comprising: a plurality of light-emitting diodes (LEDs) operatively disposed in an elongate configuration along a first direction; one or more optical couplers arranged along the first direction, such that the one or more optical couplers are optically coupled with the plurality of LEDs and configured to receive at least a portion of light from the plurality of LEDs, each optical coupler configured to at least partially collimate light from the plurality of LEDs; a light guide having a first end proximate the one or more optical couplers and a second end distal the one or more optical couplers, wherein the first end and the second ends are elongated along the first direction, such that the light guide is being optically coupled with the one or more optical couplers at the first end and is configured to receive at least a portion of light from the one or more optical couplers, wherein the light guide is configured to guide at least a portion of light from the one or more optical couplers in a forward direction from the first end toward the second end of the light guide; and an optical extractor optically coupled to the light guide proximate the second end of the light guide, wherein the optical extractor comprises first and second reflective interfaces that are elongated along the first direction, and first and second non-planar light-exiting surfaces that are elongated along the first direction, wherein the first reflective interface is arranged and configured to redirect a first portion of light from the light guide towards the first non-planar light-exiting surface in a second direction that has a component along a direction opposite the forward direction and another component along a direction transverse the first direction, and the first non-planar light-exiting surface is configured to output from the optical extractor the first portion of light along the second direction, and wherein the second reflective interface is configured to redirect a second portion of the light from the light guide towards the second non-planar light-exiting surface in a third direction that has a component along the direction opposite the forward direction and another component along a direction opposite the direction transverse to the first direction, and the second non-planar light-exiting surface is configured to output from the optical extractor the second portion of light along the third direction.