Large Horizontal Viewing-Angle Three-Dimensional Light Field Display Based on Liquid Crystal Barrier and Time-Division-Multiplexing

Abstract

Three-dimensional (3D) light field display can reconstruct vector of light field of 3D scene eliminating convergence-adjustment conflict (CAC) with full parallax and nature color cues, however it suffers from its limited viewing-angle, the mediocre display resolution, an insufficient gross of viewing perspectives and the complex setup. Here, a large horizontal viewing-angle 3D light field display with horizontal viewing zone of 70° and vertical viewing zone of 35° without resolution reduction based on liquid crystal barrier (LC-Barrier) and time-division-multiplexing (TDM) is presented. The proposed 3D light field display consists of a holographic functional screen (HFS), a lens array (LA), an LC-Barrier and a 28-inch LCD with resolution of 3840 × 2160. By analyzing the corresponding relationships of rays from elemental image array (EIA), a series of pixel-mapping equations are derived. Moreover, the issue that horizontal resolution will decrease as the horizontal viewing-angle doubles can be addressed by enhancing the resolution utilizing TDM. The fill factor is introduced to evaluate the imaging effect. Experimental results demonstrate that the large horizontal viewing-angle 3D light field display based on LC-Barrier and TDM can present actual 3D stereoscope images with correct occlusion and perception.