“In optics, there was a problem,” says Amit Agrawal, a physicist at the National Institute of Standards and Technology in Gaithersburg, Md. If you wanted to focus a single lens to two different points ...

Copenhagen, Denmark: Patients who have a new type of lens implanted in their eyes during surgery for cataracts or to correct their eyesight have excellent or good vision over distances both near and ...

A flat lens that allows a camera's focus to be maintained for objects separated by distances of up to six meters could offer benefits to smartphones and mobile devices, including the potential removal ...

Shopping for camera lenses can be daunting. It’s easy to get caught in a whirlwind of f-stops, zoom ranges, and of course, price. But there is one lens spec that is often overlooked, but can have a ...