基于液晶散射膜的多平面增强现实显示

刘澍鑫; 李燕; 苏翼凯

doi:doi:10.37188/yjyxs20203507.0725

液晶与显示, 2020, 35 (7): 725, 网络出版: 2020-10-27

基于液晶散射膜的多平面增强现实显示

Review on multi-plane augmented reality display based on liquid crystal scattering films

论文大纲

刘澍鑫 ^*李燕苏翼凯

作者单位

上海交通大学电子工程系, 上海 200240

多平面显示液晶器件增强现实聚合物稳定液晶 multi-plane display liquid crystal devices augmented reality PSLC

摘要

为实现自然、舒适的增强现实显示, 需要解决传统增强现实显示中调焦和辐辏冲突的问题。多平面显示通过在空间中构建二维切片画面来实现三维显示, 由于每层画面都显示在不同深度, 因此可以准确地表达三维显示的深度信息, 有效地缓解调焦和辐辏冲突的问题。本文主要介绍基于液晶散射膜的多平面增强现实显示系统, 包括基于正型聚合物稳定向列相液晶、反型聚合物稳定向列相液晶、聚合物稳定胆甾相液晶的多平面增强现实显示。聚合物稳定向列相液晶的响应速度可以达到0.65 ms, 聚合物稳定胆甾相液晶的响应速度也在3 ms以内, 因此可以通过时分复用的方式实现多平面增强现实显示。最后讨论了基于液晶散射膜多平面增强现实显示有待解决的问题以及未来的发展趋势。

Abstract

In order to achieve a natural and comfortable augmented reality display, it is necessary to solve the accommodation-vergence conflict problem in the conventional augmented reality displays. Multi-plane display realizes 3D display by constructing 2D slice pictures in space. Since each slice picture is displayed at a different depth, it can accurately display the depth information and effectively alleviate the accommodation-vergence conflict problem. This paper mainly introduces multi-plane augmented reality displays based on liquid crystal scattering devices, including normal-mode polymer stabilized liquid crystal (PSLC), reverse-mode PSLC and polymer stabilized cholesteric liquid crystal. The response time of the PSLC can reach 0.65 ms, and the response time of the polymer stabilized cholesteric liquid crystal is also within 3 ms, so multi-plane augmented reality displays can be realized based on time multiplexing method. Finally, the difficulties and future trends of multi-plane augmented reality displays based on liquid crystal scattering films are discussed.

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刘澍鑫, 李燕, 苏翼凯. 基于液晶散射膜的多平面增强现实显示[J]. 液晶与显示, 2020, 35(7): 725. LIU Shu-xin, LI Yan, SU Yi-kai. Review on multi-plane augmented reality display based on liquid crystal scattering films[J]. Chinese Journal of Liquid Crystals and Displays, 2020, 35(7): 725.

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