Hitachi Working To Slim Down Mobile Device Cameras

In the seemingly endless quest to make mobile devices slimmer and sleeker, we have yanked out headset jacks (looking at you, Apple) and made very skinny batteries. How to possibly get rid of (or minimize) the camera bump?

Hitachi is working on a "no lens" system that should do just that - although to me, the description sounds a bit like a fresnel lens, but what do I know?
With its new camera technology, Hitachi says you’ll be able to capture images without using a lens and adjust focus after the fact by replacing the lens with a film imprinted with a concentric-circle pattern.
TechSpot

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