Patent ID: 8469559

Claim:
An edge-lit lighting product comprising: a light guide made of a single, transparent material that demonstrates properties of total internal reflection (TIR) with respect to a surrounding environment, the light guide having a thickness and comprising: a proximal edge for receiving light from a light source; a distal edge spaced apart from the proximal edge and configured to emit at least a portion of the light from the light source to illuminate an area in close proximity to the edge-lit lighting product, the distal edge spanning across a first distance and having a substantially axial symmetric surface, wherein the first distance is greater than the thickness of the light guide; and a boundary surface extending between the proximal edge and the distal edge and defining a boundary between the single, transparent material of the light guide and the surrounding environment of the light guide, wherein at least a portion of the boundary surface is curved; and wherein the proximal edge spans across a second distance, the second distance being greater than the thickness of the material of the light guide, but less than the first distance of the distal edge.