Extraordinarily skinny light-weight lenses take wonderful photographs of the universe

A picture of the North America Nebula taken with the metalens

Courtesy of Joon-Suh Park

To take high-quality photographs of the celebs, astronomers often want thick, curved lenses to bend the sunshine exactly. However researchers have designed a flat lens that may take sharp photographs of the evening sky due to billions of nanostructures within the materials. It’s light-weight and resilient to break, so it might finally be included into satellites.

These so-called “metalenses” use metamaterials and are usually lots of of instances thinner than standard lenses. One metalens can typically substitute a number of …

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