Glasses-Free Three-Dimensional Display Based on Microsphere-Lens Array

A 3D display based on a microsphere-lens (MSL) array is proposed. This 3D display uses the MSL array to project the parallax images on a 2D display panel into different spatial directions. Each MSL can work as a conventional micro-lens. However, the MSL has a much shorter focal length than the conventional micro-lens. The shorter focal length is helpful for increasing the viewing angle. A prototype of the 3D display is developed. Experiment result shows that the proposed display has a large viewing angle and the crosstalk is also limited in a low level.

I. Introduction

In recent years, the autostereoscopic 3D display technology developed quickly. New backlight technologies and novel structures are continuously used in this 3D display. This display projects the perspectives of a 3D image in different spatial directions. It can provide a realistic vision experience to viewers [1]–[4].