Chuang Wang, Zhongwen Shen, Yishi Weng, Yuning Zhang, Baoping Wang. Field-of-View Expansion of Waveguide Display System with Double-Layer Volume Grating[J]. Acta Optica Sinica, 2022, 42(7): 0723001
- Acta Optica Sinica
- Vol. 42, Issue 7, 0723001 (2022)
Fig. 1. Holographic waveguide display system
Fig. 2. Spectral curve of OLED image source
Fig. 3. Simulation model of FOV of waveguide display of single-layer volume grating
Fig. 4. Structural diagram of double-layer volume grating
Fig. 5. Simulation model of FOV of waveguide display of double-layer volume grating
Fig. 6. Vector circle analysis diagram
Fig. 7. Schematic diagram of reproduction light path
Fig. 8. Diagram of exposure light path
Fig. 9. Preparation process of optical waveguide
Fig. 10. Schematic diagram of light crosstalk
Fig. 11. Optical waveguide structure of double-layer volume grating
Fig. 12. Actual picture of double-layer volume grating holographic waveguide and transparency display of waveguide. (a) Actual picture of double-layer volume grating holographic waveguide; (b) transparency display of waveguide
Fig. 13. Simulation and actual diffraction efficiency curves of double-layer volume grating
Fig. 14. Holographic waveguide display module and actual display effect. (a) Holographic waveguide display module; (b) actual display effect
Fig. 15. FOV test diagram of display module and display results. (a) FOV test diagram of display module; (b) test chart (grids); (c) horizontal range covered by display picture (camera focuses at infinity); (d) vertical range covered by display picture (camera focuses at infinity)
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Table 1. Angles of object light and reference light of double-layer volume gratings G1 and G2 relative to grating recording plane
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