Design of a wide-angle, ultra-thin planar two-dimensional geometrical waveguide combiner

Ningye Ruan; Feng Shi; Ci Song; Ye Tian; Xing Peng; Zhai Dede

doi:10.1117/12.2669068

21 March 2023 Design of a wide-angle, ultra-thin planar two-dimensional geometrical waveguide combiner

Ningye Ruan, Feng Shi, Ci Song, Ye Tian, Xing Peng, Zhai Dede

Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 1259528 (2023) https://doi.org/10.1117/12.2669068
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China

Abstract

We propose a novel design of two-dimensional geometrical waveguide combiner, which integrates the vertical pupil expansion area and horizontal pupil expansion area into one planar waveguide. Different from previous solutions, the proposed design allows larger FOV and easier pupil matching with compact structure. The relationship between maximum vertical FOV and slanted angle of partially reflective mirror array, the exit pupil matching method for vertical and horizontal FOV are discussed. Then the optimization process of the waveguide structure to obtain a large FOV and uniform illuminance is showed, and the simulation shows that the method is solid. The FOV of the designed waveguide combiner is 𝑉FOV × 𝐻FOV 33° × 49.5° and diagonal FOV 57.4°, and the thickness of the waveguide is 1.7𝑚𝑚.

Citation Download Citation

Ningye Ruan, Feng Shi, Ci Song, Ye Tian, Xing Peng, and Zhai Dede "Design of a wide-angle, ultra-thin planar two-dimensional geometrical waveguide combiner", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 1259528 (21 March 2023); https://doi.org/10.1117/12.2669068

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