Optical engineering is something that we take for granted these days, with almost every smartphone packing its very own camera for our convenience. But if you take a look at the delicate structure inside a mobile camera module, you may appreciate the technology more every time you snap a shot. Like this cut-out diagram of the Nokia Lumia 1020's camera, for instance: you can see how the six lens elements and other tiny parts are tightly packed together above the 41-megapi
