LIGHTING DEVICE WITH LIGHT SOURCES POSITIONED NEAR THE BOTTOM SURFACE OF A WAVEGUIDE

摘要

A device according to embodiments of the invention includes a waveguide (6), typically formed from a first section of transparent material. A light source (8) is disposed proximate a bottom surface of the waveguide. The light source comprises a semiconductor light emitting diode (12) and a second section of transparent material disposed between the semiconductor light emitting diode and the waveguide. Sidewalls (18) of the second section of transparent material ar reflective. A surface to be illuminated is disposed proximate a top surface of the waveguide. In some embodiments, an edge of the waveguide is curved.