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29 September 2023 A liquid crystal lens set in augmented reality systems and virtual reality systems for rapidly varifocal images and vision correction
Ting-Wei Huang, Hao-Hsin Huang, Yu-Jen Wang, Yi-Hsin Lin
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Proceedings Volume 12658, Liquid Crystals XXVII; 126580B (2023) https://doi.org/10.1117/12.2679402
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States
Abstract
Nowadays, augmented reality (AR) systems and virtual reality (VR) systems still suffer from two main problems related to human eyes. One is vergence accommodation conflict (VAC) and the other is vision corrections. To resolve those problems, we could use dynamic lenses to provide extra lens powers for changing the image plane of AR or VR systems and correcting vision. In this research, we used polarization-switching-type liquid crystal lenses as a varifocal lens and combined three liquid crystal lenses as a liquid crystal lens set. With applying different voltage, liquid crystal lens set exhibits four operating modes. Four operating modes present three electrically tunable lens powers: 0, -0.79 diopters, -2 diopters, and -3.06 diopters by means of passively anisotropic polymeric layers as well as active manipulation of polarization of incident light (<50 ms). Furthermore, we demonstrated the practical application of the LC lens set in AR and VR systems, effectively presenting its ability to perform varifocal image. This solves both the problems of VAC and vision correction in AR and VR systems. By adjusting the LC lens set, it could display even 7 switching modes and the lens power ranges from 0 to -4.5 D.
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(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Ting-Wei Huang, Hao-Hsin Huang, Yu-Jen Wang, and Yi-Hsin Lin "A liquid crystal lens set in augmented reality systems and virtual reality systems for rapidly varifocal images and vision correction", Proc. SPIE 12658, Liquid Crystals XXVII, 126580B (29 September 2023); https://doi.org/10.1117/12.2679402
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KEYWORDS
Liquid crystals
Augmented reality
Virtual reality
Imaging systems
Design and modelling
Incident light
Lenses
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