A light source device, comprising a light guide (3) having two light incident surfaces opposed to each other for receiving incident light radiated from a primary light source and a light outgoing surface (33) for emitting the incident light and a light deflection element (4) disposed adjacent to the...http://www.google.es/patents/US7220038?utm_source=gb-gplus-sharePatente US7220038 - Light source device and light polarizing element
