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7 August 2023 Wide viewing angle holographic augmented reality near-eye display with holographic optical element
Seongju Lee, Hosung Jeon, Woonchan Moon, Minwoo Jung, Joonku Hahn
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Proceedings Volume 12624, Digital Optical Technologies 2023; 126240I (2023) https://doi.org/10.1117/12.2675822
Event: SPIE Digital Optical Technologies, 2023, Munich, Germany
Abstract
Holographic Optical Elements (HOEs) have emerged as a pivotal technology in enhancing holographic Augmented Reality (AR) display systems. This paper presents an innovative approach that utilizes an off-axis arrangement with an HOE to secure a wide field of view up to 55°, making significant strides in volumetric reduction compared to conventional 4f filtering systems. However, a challenge arises from Bragg mismatch in the HOE, which creates aberrations. Our work proposes a method for compensating these aberrations on a voxel-by-voxel basis, substantially improving the quality of the holographic display. Limitations such as the 2mm maximum size of the eye box due to the diffraction limit of the spatial light modulator (SLM) are acknowledged, but we suggest potential solutions such as using the HOE substrate glass as a waveguide and incorporating an array of lenses with an eye tracker for pupil tracking. Our findings offer significant contributions to the holographic display technology landscape and suggest promising avenues for future research.
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Seongju Lee, Hosung Jeon, Woonchan Moon, Minwoo Jung, and Joonku Hahn "Wide viewing angle holographic augmented reality near-eye display with holographic optical element", Proc. SPIE 12624, Digital Optical Technologies 2023, 126240I (7 August 2023); https://doi.org/10.1117/12.2675822
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KEYWORDS
Holographic optical elements
Holographic displays
Augmented reality
Optical filters
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