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22 November 2024 Portable augmented reality holographic near-eye display with an expanded eyebox
Tiantian Zhang, Weisen Wang, Huadong Zheng, Yingjie Yu, Xinxing Xia
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Proceedings Volume 13240, Holography, Diffractive Optics, and Applications XIV; 1324013 (2024) https://doi.org/10.1117/12.3037574
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China
Abstract
In holographic near-eye displays, enhancing the user experience by expanding the eyebox without compromising the field of view (FOV) is crucial. Current technologies face limitations due to optical etendue, making it difficult to simultaneously achieve a large eyebox and a wide FOV. This paper presents a novel portable augmented reality holographic near-eye display system that expands the exit pupil without reducing the FOV, using exit pupil scanning technology. The system replaces conventional eyepieces and beam splitters with holographic optical elements, employs point light source illumination instead of collimated illumination, and utilizes an off-axis angular spectrum diffraction propagation model between parallel planes tailored to human visual characteristics. This approach effectively mitigates the trade-off between FOV and eyebox. Compared to traditional systems, the proposed design resolves this trade-off in simulations and reduces the form factor, offering a promising new approach for practical holographic near-eye display applications.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Tiantian Zhang, Weisen Wang, Huadong Zheng, Yingjie Yu, and Xinxing Xia "Portable augmented reality holographic near-eye display with an expanded eyebox", Proc. SPIE 13240, Holography, Diffractive Optics, and Applications XIV, 1324013 (22 November 2024); https://doi.org/10.1117/12.3037574
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KEYWORDS
Holographic displays
Holography
Near eye displays
Holographic optical elements
Spatial light modulators
Augmented reality
Displays
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