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 toward replacing bulky camera lenses with much smaller chips, PetaPixel reports. 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. The latest metalens is able to eliminate chromatic aberration, a common issue in modern camera lenses. This is when lenses fail to focus all colors on the same point, causing colored or rainbow edges to appear in areas of contrast in photos. Prior to this development, eliminating chromatic aberration has only ever been achieved in conventional lenses by stacking multiple lenses, experts say.