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 ...

His latest work, My Fingernails Are Fresnel Lenses, is a thoughtful poem about the make-up of memories and how they work through our system. “Most of my work comes from a scientific point of view.

Researchers have fabricated and tested flat lenses called Fresnel zone plates (FZPs), but did so for the first time using only common semiconductor manufacturing equipment, the i-line stepper ...

Initially, the projected image was very dark around the periphery, so [Matt] added Fresnel lenses on either side of the screen. This straightens out the light rays coming from the episcope lens ...