The important thing is they didn't drop it. A team of experts on Thursday removed the Fresnel lens from the St. Marks Lighthouse. The lens was installed in 1867. It consists of dozens of glass prisms ...

On Monday, expert lampist Chad Kaiser got to work disassembling the more than 100-year-old Fresnel lens at the Dali Museum in Monterey. “Compared with several other lenses around the country, it is in ...

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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 ...

A lens manufactured in France in 1902 is shining high atop Montauk Point Lighthouse once again. Earlier this month the U.S. Coast Guard relit the clamshell-shaped Fresnel lens, which guided mariners ...

Lenses are a necessary part of any head-mounted display, but unfortunately, they aren’t always easy to source. Taking them out of an existing headset is one option, but one may wish for a more ...

Micro-machining could be used to create almost flat, Fresnel lenses, that boost the electrical efficiency of solar panels, according to new research. Micro-machining could be used to create almost ...

The presence of god rays (or crepuscular rays, to use a more technical and less religious term) in virtual reality is an artifact from the use of Fresnel lenses in most headsets. Unlike a traditional ...