A light guide (4) for guiding light emitted from a primary light source (2), having a light incident face (41) which light emitted from the primary light source (2) enters and a light emitting face (43) from which the guided light is emitted. The light emitting face (43) is uneven surface having a large...http://www.google.es/patents/US20050237768?utm_source=gb-gplus-sharePatente US20050237768 - Surface light source and light guide used therefor
Surface light source and light guide used therefor
Número de solicitud: 10/524,413 Número de publicación: US 2005/0237768 A1 Fecha de presentación: 15 Ago 2003 Patente emitida: US7139464 ( Fecha de emisión 21 Nov 2006)
