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接近眼睛的增强现实眼镜的衍射光导体的颜色范围特征
Ching-Cherng Sun1,2, Wen-Kai Lin1, Tsung-Hsun Yang1
1Department of Optics and Photonics, National Central University, Chung-Li 320317, Taiwan.
iScience
|July 3, 2024
概括
我们开发了一种新的体积全息光学元件 (VHOE) 光指南,可以实现130%的sRGB颜色范围,与近距离显示器的表面浮雕格子 (SRG) 光指南相竞争.
科学领域:
- 光学和光子学 在光学和光子学.
- 显示技术 显示技术
- 全息影像的使用方法.
背景情况:
- 衍射光导对于近视屏幕至关重要,表面浮雕格子 (SRG) 和体积全息光学元件 (VHOE) 提供了独特的色域特征.
- 在SRG中的色彩分散和VHOE中的波长退化显著影响显示屏的色彩性能.
- 现有的光导技术面临着颜色范围和视野 (FOV) 之间的权衡,这取决于光源.
研究的目的:
- 理论上阐明使用VHOE与全息多重复合的衍射光导体的颜色性能.
- 为了在不同的照明条件下比较SRG和VHOE光导的色域功能.
- 介绍一种新的VHOE光导设计,用于在近视显示器中实现高色域.
主要方法:
- 理论建模SRG中的颜色分散和VHOE中的波长退化.
- 用激光类和宽带光源 (LED) 实现的颜色范围 (sRGB百分比) 的分析.
- 设计和模拟使用多重复合全息图的VHOE光导.
主要成果:
- 类似激光的光谱为SRG和VHOE产生194%的sRGB色域,但VHOE受到视野 (FOV) 的限制.
- 宽带源 (LED) 提供连续的FOV,但将色域减少到50%的sRGB.
- 新设计的VHOE光导实现了130%的sRGB,相当于SRG光导 (133%的sRGB).
结论:
- 在VHOE中的全息复合使得在衍射光导体中具有高颜色范围的性能.
- 拟议的VHOE设计为高质量的近视显示器提供了SRG的可行替代方案.
- 这项工作建立了第一个理论框架,用于理解光导体中的VHOE颜色性能.
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