Abstract: The disclosure provides an optical waveguide assembly. The optical waveguide assembly includes: optical waveguide plates, where there are a plurality of optical waveguide plates, the plurality of optical waveguide plates are provided in an overlaid manner, each optical waveguide plate is provided with an in-coupling structure, a turning structure, an out-coupling structure and a diffraction inhibition layer, the turning structure and the out-coupling structure on the same optical waveguide plate are located on two side surfaces of the optical waveguide plate respectively, projections of the turning structure and the out-coupling structure on the optical waveguide plate are at least partially overlapped, and the diffraction inhibition layer is located between the out-coupling structure and the optical waveguide plate. Each turning structure includes a plurality of cellular elements. The disclosure solves a problem of non-uniform display efficiency of an optical waveguide assembly in the related art.

Abstract: The disclosure provides an optical waveguide system and a near-eye display. An optical waveguide system includes: an optical waveguide; an in-coupling grating, arranged on one side surface of the optical waveguide, the in-coupling grating is a one-dimensional grating, and is configured for coupling light emitted by a micro-projector located externally into the optical waveguide; a turning grating, arranged on the optical waveguide and is located on the same side surface or a different side surface of the in-coupling grating, the turning grating is a two-dimensional grating, and is configured for receiving light of the in-coupling grating; and an out-coupling grating, arranged on the other side surface of the optical waveguide, projections of the turning grating and the out-coupling grating on the optical waveguide at least partially coincide, the out-coupling grating is a one-dimensional grating.