| dc.description.abstract | This paper focuses on the optical design of the virtual image system of the head up display, which is divided into three
parts, the virtual image system, the illumination system, and the camera system. The function of the virtual image system is to project the image of the display panel to the human eye through the eyepiece. In this study, the display panel will be placed in the object focal plane of the virtual image system so that an upright magnified virtual image can be
obtained. In addition, in order for the human eye to not always between the panel image and the real world constantly adjust the focus, the design virtual image will be 7 meters in front of human eye; The illumination system includes RGB LED light sources, collimator, x-cube, lens array, relay
lens, and TIR prism. The function of the illumination system
is to achieve uniform and efficient illumination on the DMD panel. The function of x-cube is to combine the light source, and the function of TIR prism is to combine the imaging system and the illumination system; The camera system is a three times zoom 8 million pixel camera lens, its function is to work with the virtual image system, can record the image of the outside world. If there are images that cannot be seen clearly from a distance during the driving, the camera system can be used to play back the images that cannot be seen clearly by human eyes. | en_US |