Fig. 2: Optical characterization.
From: Full color visible imaging with crystalline silicon meta-optics
a PSF measurements of SOS meta-optics. The top row is measurements of individual hyperboloids, specifically designed for wavelengths of 450 nm, 550 nm, and 650 nm. Middle row: PSF measurements for an MTF engineered meta-optic with 500 µm aperture. Bottom row: PSF measurements for an MTF engineered meta-optic with 1 mm aperture. b Cross sections of the PSF in direct comparison. c The MTF derived from the PSF measurements. Hyper refer to individual metalenses with hyperboloid phase profiles, optimized for a single wavelength. These are compared to single-aperture meta-optic ME5 (500 µm aperture) and ME10 (1 mm aperture)
