Chris Mullin from Pittsburgh has designed a pair of smart electronic sunglassesthat pinpoint and reduce glare using a moving liquid crystal display spot inside the lens.
Dubbed “Dynamic Eye”, the sunglasses dim direct sunlight or other hot spots without dimming everything else in view, so you no longer have to worry about driving home with the sun streaming directly into your line of vision.
Mullin came up with the electronic sunglasses after completing his PhD in physics from the University of California at Berkeley. The idea behind the design sprung from the general lack of functionality from most sunglasses, including polarized lenses, to cut out direct sunlight glare whilst keeping a clear picture of everything thing else.
Using the two polarizers in the liquid crystal display, the glasses are able to darken the area between your pupil and the glare source. Half the light passes through the first polarizer and the liquid crystal in the middle determines whether the light will be absorbed by, or pass through, the second polarizer. If the sun moves, then so does this crystal liquid spot and if there is no glare, there is no spot.