Here is a pair of smart glasses that automatically focuses on what you are looking at, saving you from having to use multiple glasses to see things. A team led by University of Utah electrical and computer engineering professor Carlos Mastrangelo and doctoral student Nazmul Hasan created these glasses with liquid-based lenses. They let users see close up and far way things:
The lenses are placed in special eyeglass frames [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.
Users will simply have to input their eyeglasses prescription info into the companion smartphone app to calibrate the lenses. No need to buy new glasses every again. More info is available here.
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