OPTICAL MODULE AND OPTICAL SYSTEM THEREOF FOR HEAD-UP DISPLAY, AND VEHICLE

An optical module and an optical system thereof for head-up display, and a vehicle, relating to the technical field of head-up display. The optical module comprises an image generation element (102) and a light blocking assembly which are provided in sequence; the image generation element (102) is used for forming an image signal, the image signal being incident on a receiving end (108) through the light blocking assembly; and the light blocking assembly is further used for transmitting part of light in external light according to a polarization direction and/or wavelength. The image signal is not affected or rarely affected by the light blocking assembly when passing through the light blocking assembly; the external light passes through the light blocking assembly and the image generation element (102) in sequence, and does not generate an image after passing through the image generation element (102); however, light heat of the external light would be gathered on the image generation element (102), thereby increasing the temperature of the image generation element (102). The light blocking assembly is used, such that most of external light is filtered, and the passage of a small part of the external light is allowed, thereby reducing light heat of the external light on the image generation element (102), reducing the temperature of the image generation element (102), and ensuring image quality.