FOV expansion by polychromatic light source for holographic near-to-eye display

Tianyao Zhang; Yushi Kaneda; Yuzuru Takashima

doi:10.1117/12.3002460

12 March 2024 FOV expansion by polychromatic light source for holographic near-to-eye display

Tianyao Zhang, Yushi Kaneda, Yuzuru Takashima

Proceedings Volume 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V; 1291307 (2024) https://doi.org/10.1117/12.3002460
Event: SPIE AR | VR | MR, 2024, San Francisco, California, United States

Abstract

Near-to-eye display (NED) has been widely used for augmented reality (AR) technology. Among them, holographic waveguide employing volume hologram as an input and output coupler is known to have a high diffraction efficiency compared to surface relief grating based image guide to accommodate field of view (FOV) and eyebox. However, in holographic waveguide, the FOV of volume hologram is seriously restricted, around 5 degrees. Here, we demonstrated to expand the FOV of volume hologram based input and output coupler from 5 degrees to 28 degrees and further even to 42 degrees based on polychromatic light source which mostly approaches the FOV limitation of glass-based waveguide, by utilizing multi-layer couplers or waveguides where each pair of them support portion of entire FOV.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tianyao Zhang, Yushi Kaneda, and Yuzuru Takashima "FOV expansion by polychromatic light source for holographic near-to-eye display", Proc. SPIE 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V, 1291307 (12 March 2024); https://doi.org/10.1117/12.3002460

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