| 摘要 |
An illumination system and a projection device comprising the same are provided. The projection device comprises an imaging system and the illumination system. The illumination system comprises a first light source, a dichroic element, at least one condensing element, a rotary wheel and a light integrating element. The first light source provides a first wave band light, and the rotary wheel has at least one wave band transforming area and a reflecting area. After passing through the dichroic element and the at least one condensing element, the first wave band light will be focused onto the at least one wave band transforming area to be transformed into a second wave band light or be focused onto the reflecting area that will be reflected. The second wave band light and the reflected first wave band light will be focused on the light integrating element by the at least one condensing element. |
