Making a glass Fresnel lens with its concentric rings requires even more work, but as the ever-resourceful [Robert Murray-Smith] shows us, a Fresnel lens can be made from far more mundane materials.

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 ...

Pronounced "fraynel zone." The pattern of electromagnetic radiation that is created by a transmitting station from its antenna to receiving antennas. It is in the shape of an ellipsoid, or 3D ...

Like a long-awaited Christmas present, volunteers and staff at the Custom House Maritime Museum spent some of Thursday ...

ORAFOL Fresnel Optics GmbH offers custom fabrication of plastic micro- and nanostructured optical components. Based on the complete chain of optical design, tool fabrication, precision polymer ...