Optical waveguide system and display device

The utility model provides an optical waveguide system and a display device. The optical waveguide system includes: a light source assembly; the optical waveguide sheet and the light source assembly are arranged at an interval, and the optical waveguide sheet is used for receiving the image light emitted by the light source assembly; the coupling-in grating is arranged on the optical waveguide sheet, and the coupling-in grating is used for coupling the image light into the optical waveguide sheet; the coupling-out grating is arranged on the optical waveguide sheet, the coupling-out grating and the coupling-in grating are located on the surface of the same side of the optical waveguide sheet, the coupling-out grating is used for receiving the image light of the coupling-in grating, and the coupling-out grating is used for coupling the image light out of the optical waveguide sheet; the number of the two-dimensional angle adjusting structures is one or more, and at least one of a coupling-in path coupled into t