Optimization method of overlapped CGHs for expanded eye-box in automotive holographic head-up display

Abstract

This study integrates holographic display into automotive HUDs to tackle ghost image issues. Despite SLM limitations, using SGD optimization with a 2D beam splitter and windshield expands the eye-box, eliminating ghost images. Results achieve PSNR levels of 23-26dB, demonstrating holographic HUD potential in cars without treated windshields.