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Augmented reality 2D/3D compatible display using reflective polarizer
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 6, Pages: 842-849(2023)
- 作者机构：
1.四川大学 电子信息学院， 四川 成都 610065
- 作者简介：
- 基金信息：National Natural Science Foundation of China(62275179;U21B2034);Sichuan Science and Technology Program(2022YFG0326)
DOI：10.37188/CJLCD.2022-0433
CLC：
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RAO Feng-bin, JI Qing-lin, LI Qiang, et al. Augmented reality 2D/3D compatible display using reflective polarizer. [J]. Chinese Journal of Liquid Crystals and Displays 38(6):842-849(2023)
RAO Feng-bin, JI Qing-lin, LI Qiang, et al. Augmented reality 2D/3D compatible display using reflective polarizer. [J]. Chinese Journal of Liquid Crystals and Displays 38(6):842-849(2023) DOI： 10.37188/CJLCD.2022-0433.
摘要
为了将2D/3D兼容显示技术应用于增强现实设备中，本文提出了一种基于透镜阵列全息光学元件和反射偏振膜的增强现实2D/3D兼容显示系统。该系统利用反射偏振膜将投影光源进行反射或透射。反射光束载有2D显示片源，以此实现2D显示；透射光束载有3D显示片源，经透镜阵列全息光学元件调制后实现3D显示。反射偏振膜和透镜阵列全息光学元件对环境光均有较好的透过率，从而保证系统具有增强现实的光学透过性能。实验结果表明，所提增强现实2D/3D兼容显示系统能够在2D显示模式和3D显示模式之间进行自由切换，并且其环境光对比度高于显示标准要求的标准值3∶1。
Abstract
In order to apply two-dimensional （2D）/three-dimensional （3D） compatible display technology into augmented reality display devices， this paper proposed an augmented reality 2D/3D compatible display system based on lens array holographic optical element and reflective polarizer. By using reflective polarizer to reflect or transmit the projection light， the reflected light loaded with 2D image source is used to realize 2D display， and the transmitted light loaded with 3D image source is used to realize 3D display after being modulated by lens array holographic optical element. Both reflective polarizer and lens array holographic optical element have good ambient transmittance， which makes the display system own optical see-through property for augmented reality application. The experimental results indicate that the proposed augmented reality 2D/3D compatible display system can switch freely between 2D and 3D display modes， and the ambient contrast ratio of the system is higher than 3∶1， which is the standard value of display.
关键词
2D/3D兼容显示增强现实显示反射偏振膜全息光学元件环境光对比度
Keywords
2D/3D compatible displayaugmented realityreflective polarizerholographic optical elementambient contrast ratio
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