| 摘要 |
An image projection system and an optical path synthesizer thereof are provided in the embodiments of the present invention. The optical path synthesizer includes: an optical element, which at least includes a first incidence surface for receiving a first light beam, a second incidence surface for receiving a second light beam, and an output surface for emitting the first light beam and the second light beam along a first direction; a total reflector, provided in the interior of the optical element, which includes a transmission surface for receiving the first light beam incident along the first direction and transmiting the first light beam for transmission along the first direction and a reflection surface for receiving the second light beam incident along the second direction and reflecting the second light beam for transmission along the first direction. The optical synthesizer of the present invention can effectively synthesize the parallel light beams from two independent light sources in different directions into illumination light beam in a single direction, thereby improving the imaging brightness of the image projection system. |
