全彩色单片波导组合器的超聚光解决方案

IF 1.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY EPJ Applied Metamaterials Pub Date : 2022-01-01 DOI:10.1051/epjam/2022003
O. Shramkova, V. Drazic, Guillaume Bourcin, B. Varghese, L. Blondé, V. Allié
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引用次数: 0

摘要

在这项工作中,我们提出了几种基于单波导的增强和虚拟现实近眼显示系统的全彩聚光解决方案。所提出的解决方案是基于波导内外反射和/或透射衍射光栅的组合。所提出的耦合器设计在宽角范围内具有很高的衍射效率。应用我们的新型光栅组合方案,可以对不同颜色的衍射光线进行良好的聚集。我们证明了通过使用双模对称耦合系统和角度瞳孔平铺,我们可以扩展三种RGB颜色的整体水平视场。讨论了全单波导系统的新特性,包括眼瞳扩展器和与所提出的耦合解决方案兼容的外耦组件。我们证明了一种新的非对称设计可以改变其衍射特性,提高光学元件的衍射效率和衍射均匀性。
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Metagrating solutions for full color single-plate waveguide combiner
In this work we propose several full-color metagrating solutions for single waveguide-based Augmented and Virtual Reality near-eye display systems. The presented solutions are based on a combination of reflective and/or transmissive diffraction gratings inside or outside a waveguide. The proposed in-coupler designs have high diffraction efficiency across a wide angular range. Applying our new grating combination solution, we can provide good gathering of diffracted rays for the different colors. We demonstrate that by using a dual-mode symmetrical in-coupling system and angular pupil tiling, we can extend the overall horizontal FoV for three RGB colors. The new characteristics of the full single waveguide system including Eye Pupil Expander and out-coupling components compatible with the proposed in-coupling solutions are discussed. We show that a new nonsymmetrical design of metagratings can be used to change its diffraction properties improving the diffraction efficiency and diffraction uniformity of the optical components.
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来源期刊
EPJ Applied Metamaterials
EPJ Applied Metamaterials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.10
自引率
6.20%
发文量
16
审稿时长
8 weeks
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