Fig. 1. Structure diagram of AR optical waveguide with hypersurface coupling structure. (a) Collimated emission; (b) 20° field of view angle exit

Fig. 2. Schematic diagram of derivation of generalized refractive index

Fig. 3. Simulation model of unit structure

Fig. 4. Phase and transmittance scanning results. (a) Diagram of transmittance variation with radius; (b) Diagram of phase variation with radius; (c) Diagram of transmittance variation with radius and height; (d) Diagram of phase variation with radius and height

Fig. 5. Change of transmittance and phase with angle

Fig. 6. (a) Metasurface angle deflection diagram; (b)-(c) Side view and top view of the metasurface cell structure with height H and radius R, the unit cell size is P; (d) Top view of the constructed angular deflection metasurface

Fig. 7. The field intensity distribution and angle distribution of the outgoing light at collimation incident. (a) Distribution of optical field intensity; (b) Angular distribution map

Fig. 8. Dispersion characteristics of the metasurface in the range of ±30 nm. (a) Electroluminescence characteristics of green Micro-LED^[31]; (b) Transmission distribution of the outgoing light at different angles; (c) The relation between deflection angle and incident wavelength

Fig. 9. Distribution of light intensity and angle of deflection. (a) and (b) are the field intensity distribution and angle distribution diagrams decoupled at angle 0°; (c) and (d) are the field intensity distribution and angle distribution diagram of decoupled angle +8°; (e) and (f) are the field intensity distribution and angle distribution diagram of decoupled angle +20°

Fig. 10. (a)-(c) are the distribution of the time field in the waveguide, the metasurface structure and the coupled metasurface at the incidence angle of 50°, respectively; (d)-(f) are the distribution of the time field in the waveguide, the metasurface structure and the coupled metasurface at the incidence angle of 60°, respectively; (g)-(i) respectively represent the distribution of the time field in the waveguide and the metasurface structure and the coupled metasurface at the incident angle of 75°