Fig. 3: High-contrast imaging through the MOE.
From: Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
a Sectioned images of a 532-nm laser beam passing through (i) the MAAs only, (ii) the iMLAs only, and (iii) the MOE measured with a confocal laser scanning microscope. b The corresponding normalised intensity profiles along lines AA′, BB′, CC′ on the sectioned optical images, which clearly demonstrate beam focusing and light blocking. c Normalised transmittance depending on the number of black polymeric layers at three different wavelengths. Each absorbing layer of a 5-μm-thick black and a 25-μm-thick transparent polymer resin was repeatedly stacked. d Camera images captured through the iMLAs only (upper) or with the MOE (lower). e The corresponding intensity profiles along lines DD′ and EE′, respectively. The image contrast for the ultrathin arrayed camera with the MAAs exhibits substantial enhancement compared to that for the camera without MAAs. f MTF curves calculated along the meridional and sagittal directions of the captured image. The MTF50 for the ultrathin camera with the MOE is 1.37× higher than that for the camera without iMLAs only
