A fresnel light (pronounced frəˈnel) has a stairsteped lens that varies the spread of the beam. Frenel is named after Augustin-Jean Fresnel, who invented it for use in lighthouses. Focusing a fresnel ...

This dreamy road trip across California takes you to 11 picture-perfect lighthouses that are sure to captivate your soul! Perched on a windswept cliff, the Point Arena Lighthouse looks like it’s ...

Watch for whales, but maybe skip the singing – they’re a tough crowd.” Photo credit: Rachelle C The lighthouse lens is a real showstopper – a first-order Fresnel lens that’s still in operation. It’s ...

Here’s how it works. The best iPhone lenses can quickly boost the quality of your smartphone photos and videos. Both the new iPhone 16 Pro models feature 5x telephoto lenses, while older iPhone ...

Join me as I pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets. I think that the best lenses for astrophotography are vital for getting ...

We’ve always been big fans of Sony’s top-flight G Master lenses. They’re big and beautiful, but expensive, designed to suit the best Sony cameras for professionals. These lenses aim for the ultimate ...

Want to preserve the planetary parade or capture the Lynx constellation? The best lenses for astrophotography can help you take beautiful, breathtaking images of the night sky. If you're stepping ...

Researchers have fabricated and tested flat lenses called Fresnel zone plates (FZPs), but did so for the first time using only common semiconductor manufacturing equipment, the i-line stepper ...

Helping hands soldering station with magnifying Lamp: soldering kit, very suitable for welding, assembly, maintenance, modeling, hobbies, jewelry, and crafts. With a sturdy and flexible metal hose ...

But the lenses that work with interchangeable lens cameras (ILC)? That's a whole other ball of wax, and many have pretty long names that, to the uninitiated, are full of seemingly random letters ...

To address this problem, we leverage the property of the Fresnel zone that the beam split disappears for RIS elements along a single Fresnel zone and propose a beamforming design on the two dimensions ...