Fig. 14. Single-piece multifunctional metalenses for real-time polarization imaging.

a Scheme of the generalized Hartmann–Shack beam profiler. Reproduced with permission¹²⁴. Copyright 2018, The Authors, published by Springer Nature. b Full-stokes imaging polarimetry based on a meta-unit with three parts (colors represent the polarization states). Reproduced with permission¹²⁵. Copyright 2018, American Chemical Society. c The metalens-based illumination system of a polarization microscope. Reproduced with permission¹²⁶. Copyright 2020, American Chemical Society. d The polarimetry for mid-infrared wavelength. Reproduced with permission¹²⁷. Copyright 2020, AIP Publishing