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 ...

Making a traditional glass lens requires a lot of experience, skill, and patience grinding a piece of glass to the required shape, and is not for the casual experimenter. Making a glass Fresnel lens ...

The unique history of the Crooked River Lighthouse’s lens in Carrabelle, Florida. The Crooked River Lighthouse’s Executive Director, Steve Allen, shares with us the unique qualities of the Fresnel ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the early nineteenth century, ...

Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much ...

The popular French lens design was originally created for lighthouses The popular French lens design was originally created for lighthouses is a senior editor and founding member of The Verge who ...

The most important thing to know about Fresnel lenses, before casually attempting to drop them into conversation, has to do with phonetics: "Fresnel" is pronounced "Fruh-NEL." If the silent "S" makes ...

Try on an Oculus Rift or HTC Vive and one of the first things you’ll probably notice looking through the lenses are fine concentric circles, creating something many call ‘God Rays’—especially ...

One day a week I sit atop the tower at the Cana Island Light Station with some time to think. At least I had some time in May, but that’s certain to change in future weeks and certainly for my ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the early nineteenth century, ...