Researchers from Princeton University and the University of Washington have developed an imaging system that is the size of a coarse grain of salt. It is built on a so-called metasurface with 1.6 million cylindrical posts and can work exactly like a camera sensor.
Each post acts as an optical antenna, receiving light, to shape the optical wavefront, and then thanks to AI algorithms, the high-quality image is developed in full colors.
Traditional cameras use a complex plastic and glass lenses that bend light onto a sensor that sends the signals electronically. The new solution relies…