| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain efficiency degradation and improve in color mixture of a plurality of light colors in a light-emitting unit with a lens endowed with both condensing function and color-mixing function. <P>SOLUTION: The light-emitting unit with a lens 10 includes LED elements 12 with a plurality of light colors arranged on a substrate 11, and a lens unit 13 of a rotating body shape mixing light from the LED elements 12 and emitting it. The lens unit 13 has a reflecting member 15 arranged in such a way that, regarding an arbitrary contact point Pc between a side incident face 14c and an upper incident face 14d, a light from an LED element 12 farthest from the contact point Pc which is reflected by the reflecting member 15 crosses a light path formed by refracting the light from the LED element at the contact point Pc, inside the lens unit 13. With this, a combination (RGBY) of light beams of each color reflected at the reflecting member is reversed as to a relative relation in a progressing direction line position of each color from a combination of light beams not reflected at the reflecting member to cancel color unevenness at end parts of an illumination pattern, so that color-mixing properties are improved with restraint of efficiency degradation. <P>COPYRIGHT: (C)2010,JPO&INPIT |
