University of Utah’s team of engineers have developed a pair of smart glasses which lets a person focus on any far or near object. Project led by professor Carlos Mastrangelo claims that it will eliminate the need of making separate glasses for farsighted and shortsighted people.
Smart glasses are built with adaptive lenses which are made up from glycerin, a thick-colorless-liquid which is enclosed in flexible, rubber-membrane from both sides. Back side of the membrane is connected to three mechanical actuators to push the membrane back and forth like a transparent piston.
This unique mechanism helps in changing the curvature of liquid lens to adjust the constantly changing focal length within 14 milliseconds between the lens and eyes.
As focal length of the liquid glass depends on its shaped; hence, to change the optical power, shape of membrane in the glass is changed accordingly. And to do this, all you have to do is enter your eyeglass prescription into an app and glasses will calibrate themselves automatically via Bluetooth.
This adaptive lens device can solve the problem of all the readers with flawed focal length who need to constantly wear and take off their glasses.
You can read the details of the project published in this journal.