@inproceedings{433280ed058d4d59b1eefd808ecbd366,
title = "Modelling color breaking in a holographic-optical-element based augmented reality display: effects on waveguide thickness",
abstract = "In this paper, we present theoretic modelling of color breaking in a holographic-optical-element based augmented reality (AR) display. We first build up a theoretic optical model of the AR display system using scalar diffraction method. The discussions about the design parameters of holographic optical elements (HOE) for augmented reality (AR) glasses, focusing on color uniformity as a function of the waveguide thickness are conducted. It can be used to evaluate the color breaking of a displayed white image from user{\textquoteright}s point of view. The simulation results show that color breaking occurs due to the limitations of pupil size and image shifting caused by the extended eye-box. Moreover, the thickness of the waveguide also cause uneven color distribution. Our model can also provide a way to analyze the relationship between waveguide thickness and color uniformity. In addition, based on those results, we propose a color correction algorithm by applying a pre-compensation scheme to the R/G/B values of each display pixel. Results show light display colors can be better corrected in the wider region of user{\textquoteright}s field of view. It demonstrates the feasibility of compensation of color breaking in a holographic-optical-element based AR display.",
keywords = "Color uniformity, Diffraction optical elements, Full-color AR system, Holographic Optical elements, Waveguide thickness",
author = "Chen, {Zih Fan} and Lin, {Shiuan Huei} and Vera Marinova and Hsu, {Ken Y.}",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE. All rights reserved.; Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII 2023 ; Conference date: 20-08-2023",
year = "2023",
doi = "10.1117/12.2677319",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Shizhuo Yin and Ruyan Guo",
booktitle = "Photonic Fiber and Crystal Devices",
address = "美國",
}