A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An...http://www.google.es/patents/US20080117500?utm_source=gb-gplus-sharePatente US20080117500 - High-power white LEDs and manufacturing method thereof
High-power white LEDs and manufacturing method thereof
Número de solicitud: 11/644,815 Número de publicación: US 2008/0117500 A1 Fecha de presentación: 22 Dic 2006 Patente emitida: US7889421 ( Fecha de emisión 15 Feb 2011)
