Stretchable, flexible, and adherable polarization volume grating film for waveguide-based augmented reality displays

We report a stretchable, flexible, and adherable polarization volume grating (PVG) film and propose a compact optical system for augmented reality displays based on it. The Bragg reflection band shift, deflection angle change, and the mechanical robustness under stretch-release cycles of the PVG film are also investigated.