题目：Vector light field display based on an intertwined flat lens with large depth of focus

作者：Fengbin Zhou^1,2, Feng Zhou^1,2, Yang Chen^1,2, Jianyu Hua^1,2, Wen Qiao^1,2,*, and Linsen Chen^1,2,3,*

单位：

¹School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University,Suzhou, 215006, China

²Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of

China, Soochow University, Suzhou, 215006, China

³SVG Optronics, Co., Ltd, Suzhou, 215026, China

摘要：The depth of focus (DOF) of a lens is a crucial parameter in glasses-free 3D displays that affects the viewing distance range. Here we proposed a vector light field display based on intertwined flat lens for extended viewing distance. The gray-scale diffractive lens (GDL) is designed and fabricated with extended DOF for red (658 nm), green (532 nm), and blue (450 nm) colors. By integrating the intertwined GDLs with a liquid crystal display, four views form a smooth horizontal parallax with a cross talk below 26% over a viewing distance from 24 to 90 cm. The enhancement of the DOF is 1.8×104-fold. The light efficiency of the pixelated GDL reaches 82%. The proposed vector light field 3D display has the advantages of a thin form factor, high efficiency, high color fidelity, and large viewing distance. The potential applications include portable electronics, 3D TVs, and tabletop displays.

影响因子：9.7784

链接：https://doi.org/10.1364/OPTICA.439613