Design and optimization of Micro LED vehicle lightprojection optical system

This article presents a vehicle headlight projection scheme based on Micro LED arrays. A200x150 white Micro LED array with pixel size of 80 mu mx80 mu m is designed as the display light source, anda headlight projection optical system with a field of view of 16 degrees x34 degrees is designed. The object plane tilt angleand optical system structure are optimized. In addition, the inverse distortion processing method and pixelgrayscale modulation method are used to solve the trapezoidal distortion and uniformity of illumination ofthe headlight projection image. A projection experimental platform is built to verify the image correctio method. Experimental results show that after correction, the image trapezoidal distortion coefficients p1 andp2 decrease from 0.0932 and 0.3680 to 0.0835 and 0.0373, respectively, and the image plane illuminationuniformity increases from 83.2% to 93.2%. This article achieves high light efficiency and low distortion ofvehicle headlight projection by optimizing the design of the inclined projection headlight optical systembased on Micro LEDs and using image correction methods