| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination apparatus and a projection-type image display which suppresses an increase in cost of the entire apparatus, even when light beams of four colors or more are utilized. <P>SOLUTION: The illumination apparatus includes: a liquid crystal panel 30R configured to modulate red component light according to a red input signal; a liquid crystal panel 30G configured to modulate green component light according to a green input signal; a liquid crystal panel 30B configured to modulate blue component light according to a blue input signal; and a liquid crystal panel 30Ye configured to modulate yellow component light. In addition, the illumination apparatus includes: a cross dichroic cube 60 configured to combine light beams emitted from the liquid crystal panels 30R, 30G and 30B; and a projection lens unit 110 configured to project light combined by the cross dichroic cube 60. The yellow component light emitted from the liquid crystal panel 30Ye enters a certain liquid crystal panel, which is any one of the liquid crystal panels 30R, 30G and 30B. <P>COPYRIGHT: (C)2008,JPO&INPIT |
