Patent ID: 8794812

Claim:
A light fixture, comprising: at least one light source; and a lightguide that forms an edge surface, and an upper surface and a lower surface that are in facing opposition to one another, are substantially horizontal and are orthogonal to the edge surface where the upper and lower surfaces abut the edge surface; the lightguide being operable to couple light from the at least one light source through the edge surface into the lightguide, and including a substantially non-scattering region comprising substantially non-scattering surface portions of each of the upper and lower surfaces in facing opposition to one another, with a substantially non-scattering portion of the lightguide therebetween, such that the lightguide contains the light by total internal reflection in the substantially non-scattering region, and a light extracting region that disrupts the total internal reflection such that parts of the light coupled to the light extracting region are emitted upwardly from the upper surface and downwardly from the lower surface of the lightguide, the light emitted upwardly forming an indirect light output and the light emitted downwardly forming a direct light output; the lightguide being curved along a width thereof, such that the curvature of the lightguide and the light extracting region provide the indirect light output with a two lobed, far field photometric distribution.