Smart Shades Change Color on Demand

Julie Kalista
Online Editor

Lenses on the glasses change color instantly when users turn a small knob (powered by a battery) on the frame. The knob then dials up the desired color. The lenses feature an electrochromic polymer that changes levels of darkness and color in the presence of an electric current.

The glasses only need power when they switch colors and, can be made to resemble regular sunglasses so they should cost about the same, says one researcher. However, because further research is required, practical versions of the smart sunglasses won't be available for another year or two.