HUD light path projection system and method

The invention discloses an HUD light path projection system and method and relates to the field of HUDs in the automobile industry. The system comprises a projection generation device which is configured to generate projection, and a projection device which is configured to receive the projection and project the projection to the front windshield, wherein the sum of the incident angle and the reflection angle of the projection on the front windshield is an acute angle. The system ensures that a driver can watch and use the projection on any vehicle model, does not need to reduce the HUD layout height, does not interfere with a CCB in the IP, has a small layout image for the existing measured IP system, can adapt to the sitting posture and orientation of the driver, has a large front windshield inclination angle range, and is wide in application range and low in adjustment and production cost. 本发明公开了一种HUD光路投影系统及方法，涉及汽车行业的HUD领域，该系统包括投影发生装置，被配置于发生投影；投影投射装置，被配置于接收投影，并向前风挡投射投影，所述投影在前风挡的入射角与反射角之和为锐角。本发明保证了驾驶员能够在任意车