Fig. 7
From: Waveguide-based augmented reality displays: perspectives and challenges
(a Is reprinted with permission from [87] © The Optical Society. b Is adapted with permission from Liu et al. [88]. Copyright © 2021, American Chemical Society. c Is reprinted with permission from [89]. © 2018 SPIE. d Is adapted with permission from Liu et al. [90]. Copyright © 2023, American Chemical Society)
Unique optical properties of metasurfaces applying to waveguide-based AR displays. a High in-coupling efficiency. b Polarization manipulation with geometric phase to generate stereoscopic AR. c Polarization multiplexing to expand FoV in waveguide display. d Wavelength multiplexing to generate holographic images