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Compact and lightweight optical see-through holographic near-eye display based on holographic lens
Displays ( IF 3.7 ) Pub Date : 2021-10-12 , DOI: 10.1016/j.displa.2021.102104
Min-Yang He 1 , Di Wang 1 , Yan Xing 1 , Yi-Wei Zheng 1 , Han-Le Zhang 1 , Xiao-Li Ma 1 , Rong-Ying Yuan 1 , Qiong-Hua Wang 1
Affiliation  

Optical see-through holographic near-eye display (NED) is one of the most promising augmented reality (AR) technologies for commercialization in the future. However, the conventional optical elements used in holographic NED make the optical display huge and heavy. In this paper, an optical see-through holographic NED with a compact and lightweight structure is proposed, in which the traditional optical elements are replaced by reflection-type holographic lenses (HLs). The HLs are thin and lightweight compared with the conventional optical lenses. We fabricate the HLs according to the reflection volume holographic grating theory. The HLs have high transmittance at Bragg-mismatched beam and high diffraction efficiency at Bragg-matched beam. In addition, we analyze the reason for the distortion of the holographic image caused by the HL and perform the distortion pre-compensation. In the experiment, an HL-based optical see-through holographic NED is developed, which is compact and lightweight. It can present clear holographic images at different focus depths without the vergence-accommodation conflict.



中文翻译:

基于全息透镜的紧凑轻便的光学透视全息近眼显示器

光学透视全息近眼显示器(NED)是未来商业化最有前途的增强现实(AR)技术之一。然而,全息NED中使用的传统光学元件使光学显示器变得庞大而笨重。在本文中,提出了一种结构紧凑、重量轻的光学透视全息NED,其中传统的光学元件被反射型全息透镜(HLs)取代。与传统的光学镜头相比,HL 既薄又轻。我们根据反射体全息光栅理论制造 HL。HL 在布拉格失配光束下具有高透射率,在布拉格匹配光束下具有高衍射效率。此外,我们分析了HL引起的全息图像失真的原因,并进行了失真预补偿。在实验中,开发了一种基于 HL 的光学透视全息 NED,它体积小、重量轻。它可以在不同焦深下呈现清晰的全息图像,而不会产生聚散调节冲突。

更新日期:2021-10-28
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