Projection system

A projection system comprising:

• a light source module for emitting a red light, a green light and a blue light;
• a light guide plate configured for optically combining the red light, the green light, and the blue light, the light guide plate comprising a first light incident surface, a first light output surface and a light reflection surface, the light source module aligned with the first light incident surface;
• a polarizing splitter (PBS) module comprising a polarizing splitter and a LCOS panel, the polarizing splitter comprising a second light incident surface facing to the first light output surface, a first mounting surface opposite to the second light incident surface, a second mounting surface connecting the second light incident surface and the first mounting surface, a second light output surface opposite to the second mounting surface, the polarizing splitter configured for reflection an s-polarization light and allowing a p-polarization light to pass therethrough, the LCOS panel positioned on the second mounting surface and configured for modulating the s-polarization light into light with display information signal and also reflecting the light with display information signal to a projection lens facing to the second light output surface;
• and
• a reflection device positioned on the first mounting surface and configured for reflection the p-polarization light passing through the PBS module into the projection lens for projecting.