21 May 2018 Design of a spatially multiplexed light field display on curved surfaces for VR HMD applications
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A typical light field virtual reality head-mounted display (VR HMD) is comprised of a lenslet array and a display for each eye. An array of tiled subobjects shown on the display reconstructs the light field through the lenslet array, and the light field is synthesized into one image on the retina. In this paper, we present a novel compact design of binocular spatially multiplexed light field display system for VR HMD. Contrary to the flat lenslet array and flat display used in current light field displays, the proposed design explores the viability of combining a concentric curved lenslet array and curved display with optimized lenslet shape, size and spacing. The design of placing lenslet array on a spherical surface is investigated and the specification tradeoffs are shown. The system displays highest resolution at the direction wherever the eye gazes. The design form is thin and lightweight compared to most other VR optical technologies. Furthermore, the use of a curved display reduces the complexity of optical design and wastes fewer pixels between subobjects. The design simultaneously achieves a wide field of view, high spatial resolution, large eyebox and relatively compact form factor.
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Tianyi Yang, Tianyi Yang, Nicholas S. Kochan, Nicholas S. Kochan, Samuel J. Steven, Samuel J. Steven, Greg Schmidt, Greg Schmidt, Julie L. Bentley, Julie L. Bentley, Duncan T. Moore, Duncan T. Moore, } "Design of a spatially multiplexed light field display on curved surfaces for VR HMD applications ", Proc. SPIE 10676, Digital Optics for Immersive Displays, 106760Y (21 May 2018); doi: 10.1117/12.2315373; https://doi.org/10.1117/12.2315373

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