Engineers Develop 'Smart Glasses' That Automatically Focus on What Wearer Sees
From: ECN - 01/25/2017

A team led by University of Utah electrical and computer engineering
professor Carlos Mastrangelo and doctoral student Nazmul Hasan has created
"smart glasses" with liquid-based lenses that can automatically adjust the
focus on what a person is seeing, whether it is far away or close up.
Research on the adaptive lenses was published this week in a special edition
of the journal, Optics Express. The paper was co-authored by U electrical and
computer engineering associate professor Hanseup Kim and graduate researcher
Aishwaryadev Banerjee.

The lenses are placed in special eyeglass frames also invented by
Mastrangelo, Hasan and other members of the research group with electronics
and a battery to control and power the actuators. In the bridge of the
glasses is a distance meter that measures the distance from the glasses to an
object via pulses of infrared light. When the wearer looks at an object, the
meter instantly measures the distance and tells the actuators how to curve
the lenses. If the user then sees another object that's closer, the distance
meter readjusts and tells the actuators to reshape the lens for
farsightedness. Hasan says the lenses can change focus from one object to
another in 14 milliseconds. A rechargeable battery in the frames could last
more than 24 hours per charge, Mastrangelo says.

Read the entire article at:
https://www.ecnmag.com/news/2017/01/engineers-develop-smart-glasses-automatically-focus-what-wearer-sees

Links:
I Can See Clearly Now
https://www.mdtmag.com/news/2017/01/i-can-see-clearly-now

Tunable-focus lens for adaptive eyeglasses
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-25-2-1221&id=357441

Engineers Develop Automatically Focusing 'Smart Glasses'
http://www.rdmag.com/news/2017/01/engineers-develop-automatically-focusing-smart-glasses

These Smart Glasses Automatically Adjust to Your Eyes (with video 1:35)
http://spectrum.ieee.org/video/semiconductors/devices/these-smart-glasses-automatically-adjust-to-your-eyes