Three-dimensional light-field display with enhanced horizontal viewing angle by introducing a new lenticular lens array

Abstract

Three-dimensional (3D) light-field display simulates the authentic light-field distribution of objects, but its narrow viewing angle remains an obstacle for medical and educational applications. Here, a light-field display system based on lenticular lens array (LLA), lens array (LA) and holographic functional screen (HFS) is demonstrated, which can regenerate the high viewpoint density 3D light-field with both large horizontal viewing angle and appropriate vertical viewing angle. The LLA is introduced in the system to expand crucial horizontal viewing angle and to improve stereo perception. The application of optical optimization lens and HFS can suppress aberration and improve the accuracy of reconstructed light-field distribution. In the experiment, a full-parallax 3D light-field display prototype with the correct geometric occlusion is realized with 70 degrees horizontal viewing angle and 30 degrees vertical viewing angle, where 11000 viewpoints are obtained. A sophisticated 3D scene is optically reconstructed with the synchronization of capture and image encoding, which proves the feasibility and applicability of the method.