| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illuminator improved in color rendering properties of white light and prevented from being declined in emission efficiency of white light. <P>SOLUTION: The illuminator 1 comprises an LED chip 5 emitting blue light, and a phosphor layer 11. The phosphor layer 11 is formed by dispersing: a yellow phosphor 13 having the shape of a particle which is excited by blue light emitted from the LED chip 5 to emit yellow light; and a red phosphor 14 which is excited by blue light to emit red light, into a translucent synthetic resin material 12. The red phosphor 14 is formed in larger lump than the yellow phosphor 13 and dispersed at a density coarser than the yellow phosphor 13. <P>COPYRIGHT: (C)2009,JPO&INPIT |
