| 摘要 |
Liquid crystal modulating elements (light-modulating elements) (925R, G, B) are so arranged that the light-emerging surfaces (9252R, G, B) thereof are opposed to light-entering surfaces (911R, G, B) of a color combining prism (910). Transparent plates (970R, G, B) are respectively stuck to the light-emerging surfaces (9252R, G, B). This prevents dust from adhering to the light-emerging surfaces (9252R, G, B), and also prevents the reflection of light due to a difference in the refractance at the interface between the light-emerging surfaces (9252R, G, B) and the air. Therefore, an image of a high quality can be projected without deteriorating the switching characteristics of the liquid crystal modulating elements (925R, G, B), since the light-emerging surfaces (9252R, G, B) are not contaminated. |
