Distortion correction in metasurface dot projection based on coordinate mapping.

Authors

Hanyi Sun, Fangcheng Cao, Xingyan Zhao, Yang Qiu, Yuan Dong, Qize Zhong, Shaonan Zheng, Ting Hu

Published in

Applied optics. Volume 65. Issue 23. Pages 7890-7897. Aug 10, 2026.

Abstract

Wide-angle structured light projection is essential for advanced three-dimensional imaging applications. However, severe geometric distortion arises from the inherent mismatch between spherical wave propagation and planar projection. In this work, we design a metasurface-driven dot array projector by introducing a coordinate pre-compensation strategy derived from the Rayleigh-Sommerfeld diffraction theory. For a 225 dot array, the proposed design achieves an average eccentricity of 0.1931 over a wide 170^∘ field of view. The dot distribution in the peripheral region becomes denser. It also achieves a diffraction efficiency of 48.93%. These results demonstrate that the coordinate pre-compensation strategy can effectively correct dot array distortion.

PMID:
42593460
Bibliographic data and abstract were imported from PubMed on 13 Aug 2026.

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