Planar-waveguide-based multi-channel crosstalk-free metasurface holographic device

Abstract

Disclosed is a type planar-waveguide-based multi-channel crosstalk-free metasurface holographic devices, including a glass planar waveguide and a metasurface above the glass planar waveguide; light propagates inside the planar waveguide in the form of total internal reflections and illuminates the metasurface; the metasurface is capable of selectively projecting multiple crosstalk-free and independent holographic images according to different combinations of circular polarization state and azimuth angle of the total internal reflection incident light inside the waveguide. The device utilizes two properties of incident light, namely the state of polarization and the angle of incidence, and can selectively project multiple independent crosstalk-free holographic images according to the state of polarization and the propagation azimuthal angle of the total internal reflection light in the waveguide. In addition, the device has broadband operational property, such that the projected target images can have different colors.

Dependencies are inferred from the claim text.