Head-up display system based on polarized light

The utility model is suitable for the optical imaging technology, and provides a head-up display system based on polarized light. The head-up display system comprises a flat panel display device, a display control unit and a reflective polarization device. The flat panel display device is used to generate linearly polarized light carrying image information. The display control unit is connected with the flat panel display device for providing a signal driving the flat panel display device and controlling the image information displayed on the flat panel display device. The reflective polarization device is attached onto the inner surface of the front windshield of a car, and the transmission axis direction of the reflective polarization device is vertical to the transmission axis direction of a polarizer on the surface of the flat panel display device for performing total reflection on the received linearly polarized light carrying the image information that emitted by the flat panel display device. According to the head-up display system based on polarized light, a clear virtual image can be presented in the reflective polarization device, and advantages of simple structure, wide visual range, clear imaging and high light utilization ratio can be realized.