| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light source device which attains a high light utilization rate without influencing a light distribution property, and can emit light of little color separation. <P>SOLUTION: The light source device is provided with an LED unit having LED chips and phosphors which change wavelengths of a part of light from the LED chips, a lens positioned at the light irradiating side of the LED unit, and a light diffusion layer positioned on the light irradiating face or the light incident face of the LED unit with an air layer between. <P>COPYRIGHT: (C)2007,JPO&INPIT |
