Fig. 1. Simulation results and PSNR comparison of SGD and GS algorithms. (a) Simulation result of castle image using SGD algorithm; (b) simulation result of castle image using GS algorithm; (c) simulation result of USAF resolution chart image using SGD algorithm; (d) simulation result of USAF resolution chart image using GS algorithm; (e) comparison of PSNR between two algorithms

Fig. 2. Principle of pupil expansion of waveguide

Fig. 3. Schematic diagram of two-dimensional pupil expansion based on two-dimensional surface relief grating and waveguide

Fig. 4. Schematic diagram of expanding eyebox using waveguide. (a) Case without waveguide; (b) case with waveguide

Fig. 5. Schematic diagram of designed system

Fig. 6. Experimental setup of designed system

Fig. 7. Displaying result of resolution chart in green

Fig. 8. Displaying result of color image

Fig. 9. Results captured at different positions without waveguide

Fig. 10. Results captured at different positions with waveguide

Fig. 11. Experimental setup and display result of AR display test. (a) Enlarged view around waveguide in experimental setup of AR display test system; (b) result of AR display combining virtual and real scenes

Fig. 12. Result of the uniformity test