Lens could get a lot smaller, lighter and cheaper

PB_PM

A company called Metalenz has developed a way to make lenses much cheaper (25-50%) and smaller (50% or more) by developing micro lenses on silicon. At least that is the gist of what they are developing. Sounds like the first wave would be targeted at larger sensor cameras and then cellphones once they get to smaller silicon processes.

Here is a overview of the topic by a writer from AnAndTech.
https://www.youtube.com/watch?v=65fx9qB68HE

Pistnbroke

Its a bit like the halfway house of Fresnel lenses , replacing a single lens with circular lenses each angled to improve the image. The next step is thousands of individually designed micro lenses ...