A light emitting device is disclosed herein which includes a substrate, a housing, a light emitting die, and a cup with a reflective inner surface. The housing has an upper surface and at least one sidewall and is mounted on the upper surface of the substrate, thereby forming a cavity. The light emitting...http://www.google.es/patents/US7841747?utm_source=gb-gplus-sharePatente US7841747 - Light emitting device