| 摘要 |
The present invention relates to an image display apparatus including a plurality of spatial light modulation elements corresponding to respective colors and an illumination optical system illuminating the plural spatial light modulation elements. The image display apparatus includes a dichroic prism ( 5 ) which color-separates illumination light from an illumination optical system ( 2 ) to direct thus separated lights to respective spatial light elements ( 3 R), ( 3 G), ( 3 B) as well as composites reflection lights from those spatial light elements ( 3 R), ( 3 G), ( 3 B), and a projection lens ( 6 ) which projects the light outgoing from the dichroic prism ( 5 ) to display an image. A retarder stack ( 7 ), which is disposed on an optical path between the illumination optical system ( 2 ) and the dichroic prism ( 5 ), causes light of wavelength band which is supposed to pass through reflection planes of the dichroic prism ( 5 ) to be of P-polarized light, and causes light of wavelength band which is supposed to be reflected by the reflection planes to be of S-polarized light.
|
