| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device having a proper color balance and favorable brightness of projection light, allowing effective use of UV light, emitted from the light source and suppressing thermal or solarization damages on a phosphor layer, and to provide a projection-type image display device that is equipped with the light source device. SOLUTION: The light source device 12 has a color wheel 4, having a phosphor layer 41 comprising a fluorescent glass and a filter 42 comprising a multilayered film. The phosphor layer 41 includes a red phosphor layer, green phosphor layer and blue phosphor layer that convert UV light into red, green and blue visible lights, respectively. The red light, converted from UV light in the red phosphor layer, is superimposed on the red light made incident on the red phosphor layer, transmits through the filter 42 and is exited from the color wheel 4. COPYRIGHT: (C)2007,JPO&INPIT
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