| 摘要 |
An image display device having a screen having a fluorescent region including a fluorescent material; a light irradiation system, including a first light source outputting excitation light exciting the fluorescent material; a second light source outputting visible light; a scanning unit scanning with a light beam output from each of the first light source and the second light source on the screen; and an excitation light wavelength band reflector reflecting light in a wavelength band of the excitation light toward the screen, and formed on an output side of a light beam from the light irradiation system with respect to the screen. The visible light output from the second light source is diffused by the screen, while the excitation light output from the first light source develops a color different from that of the visible light by being projected in the fluorescent region.
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