用于具有多个平面排列空间光调制器的全息显示的时空复用

Spatiotemporal multiplexing for holographic display with multiple planar aligned spatial-light-modulators.

作者信息

Teng Dongdong, Liu Lilin, Zhang Yueli, Pang Zhiyong, Chang Shengqian, Zhang Jincheng, Wang Biao

出版信息

Opt Express. 2014 Jun 30;22(13):15791-803. doi: 10.1364/OE.22.015791.

DOI:10.1364/OE.22.015791

Abstract

A holographic display system combining the spatial- and time-multiplexing together in one system is proposed. The system is constructed by multiple planar aligned spatial-light-modulators (SLMs). A shiftable cylindrical lens is introduced in to build up an "equivalent SLM" by seamlessly linked horizontal images of the SLMs, which are tiled in a time-sequential manner. The proposed system can realize wide horizontal-viewing-angle holographic three-dimensional (3D) display through the "equivalent SLM", but bear with low requirements on the number and frame rate of SLMs, and the numerical aperture of the optical system. In the proposed system, only one parallel incident beam is needed, leading to a simplified optical structure. Using two 60Hz phase SLMs, a 3D display with a horizontal viewing angle (VA) of 27.5° is implemented experimentally.

摘要

提出了一种在一个系统中结合空间复用和时间复用的全息显示系统。该系统由多个平面排列的空间光调制器（SLM）构建而成。引入了一个可移动的柱面透镜，通过以时间顺序平铺的SLM的水平图像无缝链接来构建一个“等效SLM”。所提出的系统可以通过“等效SLM”实现宽水平视角全息三维（3D）显示，但对SLM的数量、帧率以及光学系统的数值孔径要求较低。在所提出的系统中，仅需要一束平行入射光束，从而简化了光学结构。使用两个60Hz的相位SLM，通过实验实现了水平视角（VA）为27.5°的3D显示。