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Submission + - Flat lens focuses without distortion (harvard.edu)

yahyamf writes: Applied physicists at the Harvard have created an ultrathin, flat lens that focuses light without the distortions of conventional lenses.

“Our flat lens opens up a new type of technology,” says principal investigator Federico Capasso. “We’re presenting a new way of making lenses. Instead of creating phase delays as light propagates through the thickness of the material, you can create an instantaneous phase shift right at the surface of the lens. It’s extremely exciting.”

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