| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-reliability LED light source device with almost no chromaticity variation between lots, and no chromaticity unevenness that achieves white light having a spectrum distribution including wavelength components corresponding to the light's three primary colors of R (red), G (green), and B (blue) with excellent color reproducibility. <P>SOLUTION: The LED light source device is composed so as to arrange a first color conversion filter 3 formed by dispersing a red phosphor 3a on glass 8, and a second color conversion filter 4 formed by dispersing a green phosphor 4a on the glass 8, in an irradiation direction of a blue LED 2. It is also composed so as to obtain three-wavelength white light of R, G, and B, by B (blue) light emitted from the LED 2 and guided inside the first color conversion filter 3 and inside the second color conversion filter 4, R (red) light guided inside the second color conversion filter 4 after the blue light emitted from the LED 2 is subjected to color conversion with the first color conversion filter 3, and G (green) light that is the light subjected to color conversion with the second color conversion filter 4 after the blue light emitted from the LED 2 is guided inside the first color conversion filter 3. <P>COPYRIGHT: (C)2008,JPO&INPIT |
