| 摘要 |
An illumination system and a projection device comprising the same are provided. The illumination system comprises a main optical axis, a light source, a wheel, an optical device, a first wavelength transformer and a first angle selective film. The light source is adapted to provide a light beam advancing along the main optical axis. The wheel is adapted to rotate according to a control signal. The optical device comprises a first lens, a second lens and a third lens sequentially disposed between the light source and the wheel along the main optical axis. The optical device is adapted to converge the light beam to a focused position on the wheel. The first wavelength transformer is disposed on the wheel for receiving and transforming the light beam into a first wavelength light. The first angle selective film is adapted to angle-selectively filter the first wavelength light, and is disposed on the first wavelength transformer. The first wavelength transformer is disposed between the light source and the first angle selective film. |
