Fresnel lenses are specialized optical components with grooved surfaces instead of traditional curved ones. Owing to their unique design, Fresnel lenses are thin and lightweight, typically have short ...
If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...
The light source, the crystal and the Fresnel lens all move linearly ... an old scanner mechanism and old electric motors. Its got a Raspberry-Pi running Pure Data and Python scripts, with ...
Other exhibits focus on Fresnel lenses, shipwrecks or the evolution of lamps from oil to electric. While many lighthouses ...