Auto-stereoscopic displays based on directional backlights with side-glowing polymer optical fiber array module

Abstract

A compact auto-stereoscopic display based on directional backlights with side-glowing polymer optical fiber (SGPOF) array module is designed and fabricated, to provide better three-dimensional perception with image qualities comparable to that of two-dimensional displays, and to reduce thickness of display. The multi-view zones of the SGPOF display is simulated by Tracepro software and experimentally verified. It has been successfully demonstrated by measurement and simulation that the SGPOF display is subject to much lower crosstalk. It is found that the spatial crosstalk coming from adjacent channels is reduced by inserting a grating film as multi-slit diaphragm between the SGPOF array and the cylindrical lens array(CLA),and achieves a crosstalk less than 5% by simulation calculation. In order to effectively improve the coupling efficiency of light to fiber, globular lens in end side of SGPOF is designed, and such scheme is proved to be effective in increasing the coupling efficiency that has raises the .300% times of before. The experimental results show that the luminance uniformity of the SGPOF display is up to 89.3%, the overall crosstalk is shown to be lower than 10%, and minimum achievable crosstalk can be as small as 2.2%. The minimum thickness of SGPOF display is only 18 mm. The full-resolution and low-crosstalk 3D images are realized by using SGPOF array module backlight.