An illumination system including at least one coherent light source, a light uniforming element, and a prism is provided. The coherent light source is capable of emitting a coherent beam. The light uniforming element is disposed on a transmission path of the coherent beam. The prism is disposed on the...http://www.google.es/patents/US8116019?utm_source=gb-gplus-sharePatente US8116019 - Illumination system
