[LCT3-3] Topology-Optimized Spatially Modulated PVGs for Uniform Exit Pupil Expansion in AR Waveguide Displays | The 32nd International Display Workshops (IDW '25)

The 32nd International Display Workshops (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

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The 32nd International Display Workshops (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

[LCT3-3]Topology-Optimized Spatially Modulated PVGs for Uniform Exit Pupil Expansion in AR Waveguide Displays

*Wanchen Zhang¹, Yishi Weng¹, Liang Zhou¹, Chuang Wang¹, Ran Wei¹, Nan Lin¹, Yuning Zhang¹(1. Southeast University (China))

https://doi.org/10.36463/idw.2025.0052

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Keywords:

Polarization volume grating,Diffracted waveguide display,Uniformity,AR display

This paper presents a partition uniformity optimization method based on polarization beam grating (PVG). By adjusting the grating partition width of the coupling area to form blank areas, the uniformity is optimized. The results show that the uniformity of the exit pupil has significantly improved, and the uniformity of the FOV within the eyebox has increased by nearly twice.

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