Designer Yousif Ashoor created a pair of 3D-printed autoshade sunglasses with automatic lenses that can slide into place over his eyes in sunlight, and slides out in the shade. The automatic sunglasses are triggered when a sensor detects ultraviolet (UV) light, or vice versa, in seconds.
Don’t be surprised if you find these type of sunglasses available commercially, of course considering design improvements. Watch the video demo below.