You may know them best for their original use in lighthouses, where they're famously recognised as "the invention that saved a million ships". Or perhaps you initially think of their employment in ...

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 ...

Germany's Astera has announced the introduction of its new Fresnel series of lights; the compact PlutoFresnel and the larger LeoFresnel. By developing LED lights specifically for integration with a ...

Before the invention of the high-powered LED, and even really before the widespread adoption of electric lights in general, lighthouses still had the obligation of warning ships of dangers while ...

Fresnel lenses consist of interspaced, concentric steps which correspond to the surface of a conventional lens. This equates to a lens with a common focal length, equivalent to a simple lens, but at ...

More than 2,000 lighthouses large and small watch over Norway’s fractal, rocky coast. Some have stood for centuries, guiding mariners through treacherous seas and safely to port. Now they all must be ...

Apple's AR headset or "Apple Glass" device may use a movable display to compensate for motion blur, while fresnel lenses could help keep the weight of the headset down for users. Apple is long-rumored ...

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 ...