| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection type display apparatus with a high contrast ratio by improving an optical system with differences in contrast characteristics of color light taken into consideration in a liquid crystal display apparatus. <P>SOLUTION: In the projection type display apparatus 1, a film 310 which selectively reflects blue light is stuck on the outer periphery of a first optical element 320 having a large number of microlenses 311 fabricated among optical components disposed between a light source unit 201 and a color separation optical system 380. This prevents incident of light that is greatly inclined from the normal direction of the entrance surface and decreases the contrast ratio with respect to a liquid crystal light valve where blue light enters. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
