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 ...
The history of optics began long before Christ in the regions where ancient Egyptians and Mesopotamians used to live. The Indian subcontinent, the Greek people, and the Islamic world should be ...
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 ...
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 new Astera QuikPunch essentially takes everything that made the QuikSpot a success and scales it up. Taking cues from the popular 3” lens QuikSpot but scaling up in size, lux output, and beam ...
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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 ...
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 ...
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