This is a prototype of "smart" sunglasses designed mainly for drivers to minimise driver's dazzle from strong light sources while driving during the night. The difference is the use of LCD screen matrix as dimming medium that can dim the point of the light source while leaving the rest of visible area undimmed.
It uses four photoresistors as a light direction and brightness sensor. Arduino Mini is used as a medium for transleating sensor output to position for dimming on LCD matrix.
The circuit runs on 5V from USB type A plug.