This work provides a quantitative evaluation on the uniformity of auto-stereoscopic 3D (AS3D) displays. The single-unit uniformity UM is defined to describe the display quality at different viewing positions, then the overall display quality of an AS3D system is determined by the inter-unit uniformity ŪM. As an example, the uniformity of a directional backlight 3D (DB3D) display is experimentally evaluated. Moreover, a visualized simulation is built to analyze the experimental results and optimize the optical system. By modifying the radiant features of the backlights, the entire uniformity of the DB3D displays can be effectively improved. We foresee this work helps to quantitatively evaluate the uniformity and improve design for any kinds of AS3D display type.
