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Revolutionary ‘Metalens’ Can Focus All Visible Light on One Point

Researchers have created the first “metalens” that can focus the entire visible spectrum of light onto a single point in high resolution. The breakthrough brings metalenses one step closer towards replacing bulky camera lenses with much smaller chips.

We first reported on the metalens research by Harvard scientists back in mid-2016, when they announced that the new technology could lead to high-resolution camera lenses that are thinner than a human hair.

Instead of using solid pieces of curved class to focus light, “meta-material lenses” are covered with an array of “titanium dioxide nanofins” that helps focus light on a point in exactly the same way.

Back in 2016, the researchers stated that the next challenge would be figuring out how to make these metalenses focus the entire visible spectrum and all colors onto a single point:

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