| 摘要 |
<p>In a reflection-type image projecting unit, being applicable into a reflection-type image display apparatus, being superior in contrast and achieving small-sizing of the apparatus, together with a light source for use therein, a light flux including three (3) color components, R, G and B, emitted from a light source portion 100 , are modulated and synthesized by means of reflection-type liquid crystal panels 221, 222 and 223 in an optical engine 200 , which is constructed with three (3) prism-like polarization light beam splitters, to be emitted therefrom, wherein those three (3) prism-like polarization light beam splitters are so disposed, that the G-component light of the three component lights R, G and B modulated on the reflection-type liquid crystal panel elements penetrates through two (2) of the prism-like polarization light beam splitters 231 and 232 , to be emitted therefrom, while the others, the B-component light and the R-component light penetrate therethrough after being reflected thereupon, or they are reflected after penetrating therethrough, while taking the planes of polarization lights of the propagating lights into the consideration.</p> |
