Lensless Ultra-Miniature CMOS Computational Imagers And Sensors

We describe a new class of lensless, ultra-miniature computational imagers and image sensors employing special optical phase gratings integrated with CMOS photodetector matrices. Because such imagers have no lens, they are ultra- miniature (∼100 μm), have large effective depth of field (1 mm to infinity), and are very inexpensive (a few Euro cents). The grating acts as a two-dimensional visu... » read more