Fig. 1: Human vision deficiency and photoresponse of CIPS photodetector.
From: Ionic-electronic photodetector for vision assistance with in-sensor image processing
a The schematic of the retina structure of the human eye with different color cones, and a comparison of colorful objects and their protanopia view due to the deficiency in red cones. b The cone cells work under bright conditions, while the rod cells work under dim conditions; a weak signal cannot be observed when facing the bright headlights since cones and rods cannot work simultaneously. c CIPS photodetector array and its microscopic molecular structure under photon illumination. d Multiple relationships between photocurrent and light intensity lead to the in-sensor image transformations, including logarithmic transformation, piecewise transformation, and inverse transformation. e Distinct photoresponse of CIPS photodetector for red, green, and blue light, which results in distinguishable photoresponse for color blindness individuals. The gradient color in the plot represents light intensity, with darker colors indicating higher light intensity.
