Fig. 3: Intensity imaging performance of the PMO.
From: Plan meta-objective for sub-micron quantitative phase imaging
a Illustration of the amplitude WOTF at a wavelength of 450 nm in the spatial frequency domain. b Comparison between the CTF (blue line) and the amplitude WOTF (red line) along the white dashed line in a. c Full-field image of the doublet with a diameter of 440 μm at a wavelength of 450 nm after flat-field correction. The yellow dashed circle represents the 500-μm lens aperture. The red one indicates the 440-μm FoV. d Images of the central region after the relay system at object heights of 0 μm, 20 μm, 60 μm, and 100 μm along the horizontal direction. The magnified images of 9-6 and 10-1 line pairs are displayed below the corresponding images. e Longitudinal and horizontal intensity profiles of the elements in group 9, as well as the 10-1 and 10-2 line pairs at an object height of 0 μm, demonstrating isotropic resolving power
