Monolithic resonant metasurface integration onto photodetector depletion regions, eliminating bulky multi-lens assemblies
https://www.eurekalert.org/news-releases/1137850 "image sensors have complex multi-element refractive lens stacks to focus/ filter incoming light, introducing spatial distortion at wide angles... overcome fabricating sub-wavelength dielectric nanostructures onto sensor’s active pixel substrate, controlling light phase, polarization, spectral response at detector's surface... significantly improves light-absorption efficiency, reduces image sensor/ edge-vision front end size/ weight... high-performance: robotics, mobile devices, autonomous systems"