| 摘要 |
<p>In order to reduce polarization dependency of a light separation characteristic of a 45 degree dichro and to improve the image quality of the projector based on the color separation/synthesis optical system using the 45 degree dichro, in the illumination optical system, green light and blue plus red light are separated by a color light direction change element (40), and the polarization direction thereof are adjusted by a polarization change element (50).</p> |
