Meta-Dispersive 3D Chromatic Confocal Measurement.

ABSTRACT: 3D reconstruction can perceive the detailed structures of real-world objects. Integrating metasurfaces with stereo vision or structured-light projection enables compact and efficient 3D reconstruction systems, beneficial for next-generation sensing, augmented reality, and biomedical applications. Nevertheless, the limitations inherent in these visual measurement methods pose a significant challenge to achieving higher resolution. Here, a dispersive metalens (DML) combined with the chromatic confocal method is proposed to achieve high-precision 3D measurement. With appropriate engineered dispersion, the linearity of the dispersion is well maintained, alongside diffraction-limited focusing performance. As a proof-of-concept, experiments on both longitudinal and transversal measurements are c

SUBMITTER: Wu J 

PROVIDER: S-EPMC12533388 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature