Crystals (Dec 2022)

A Study of the Field of View Performance for Full-Color Waveguide Displays Based on Polarization Volume Gratings

  • Yuchen Gu,
  • Yishi Weng,
  • Yuning Zhang,
  • Chuang Wang,
  • Ran Wei,
  • Wei Wang,
  • Nan Lin,
  • Lixuan Zhang,
  • Baoping Wang

DOI
https://doi.org/10.3390/cryst12121805
Journal volume & issue
Vol. 12, no. 12
p. 1805

Abstract

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Multilayer waveguide structures can realize full-color AR displays of diffractive waveguides. This paper discusses the field-of-view characteristics of a waveguide system with a multilayer structure when polarization volume gratings (PVG) are applied as couplers to achieve a full-color display. The effects of the refractive index and period parameter of PVG-couplers on the field of view are investigated. In addition, a PVG waveguide sample with an optimized design is prepared. The experimental results show that the designed waveguide system can achieve a full-color AR display with a 45° diagonal field of view, which verifies the feasibility of the design and provides a potential solution for AR color waveguide display applications.

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