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 ...

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The world of lighting hardware can be confusing waters to navigate. There are so many different options, so many different types of fixtures, quality of light and methods of creating light; how do you ...

GRAVES LEDGE, BOSTON HARBOR — Dave Waller and Bobby Sager are used to taking on daunting projects. A decade ago, they bid against each other at the government auction for Graves Light, a historic ...

YORK — It was touch and go for awhile whether the U.S. Coast Guard would continue to use the historic Fresnel lens at Cape Neddick "Nubble" Light. After the town lost electricity to the island in ...

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 ...

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 ...

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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 ...