| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination system capable of realizing a color image without a color wheel, and a projection system employing the illumination system. SOLUTION: The illumination system includes: first, second, and third light emitting devices which emit light beams having different wavelengths; and first and second hologram devices which are disposed in an 'X' configuration at a prescribed angle with respect to the first, second, and third light emitting devices and transmit or reflect incident light depending on the wavelength of the light. The projection system includes: the first, second, and third light emitting devices which emit light beams having different wavelengths; the first and second hologram devices which are disposed in the 'X' configuration at a prescribed angle with respect to the first, second, and third light emitting devices and transmit or reflect incident light depending on the wavelength of the light; a display device which processes beams incident in one direction via the first and second hologram devices, according to an input image signal, and forms an image; and a projection lens unit which enlarges and projects the image formed by the display device on a screen. COPYRIGHT: (C)2004,JPO
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