The US Patent and Trademark Office has granted Apple a patent on a refocusable camera system similar to Lytro's camera technology
. Apple's concept is based on a microlens adapter, but like Lytro, would let people refocus a photo after it's taken -- something impossible with regular camera optics. The Apple patent in fact cites
the work of Lytro founder Ren Ng as prior art, and reports have previously noted that, prior to Lytro going public with its product, former Apple CEO Steve Jobs invited Ng to his home for a demonstration.