Fig. 1: Principle of metasurface-assisted i-DIC microscopy.
From: Single-shot isotropic differential interference contrast microscopy

a The schematic of the proposed i-DIC microscopy. CMOS, complementary metal oxide semiconductor. b the polarization conversion and optical field changes in the polarization coordinate system of i-DIC microscopy. c The optical setup of i-DIC microscopy, The silver-white arrows indicate the polarization direction, and the function represents the APSF of i-DIC microscopy. a. u. arbitrary units.