Light emitting panel assemblies include a light emitting panel member having at least one light source optically coupled to a portion of an input edge of the panel member. A plurality of individual light extracting deformities on or in at least one panel surface of the panel member are of well defined...http://www.google.es/patents/US7434973?utm_source=gb-gplus-sharePatente US7434973 - Light emitting panel assemblies
