Researchers at Paul Scherrer Institute (PSI) have developed the world's first achromatic lens for neutron imaging. The lens ...

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 new system could create patient-specific lenses for those with irregular corneas who struggle with traditional contact ...

Using 3D printing and porous silicon, researchers at the University of Illinois Urbana-Champaign have developed compact, visible wavelength achromats that are essential for miniaturized and ...

Eyeglass lenses have been cast, shipped, and ground the same way for decades. Azul 3D is betting that UV-curable ...

Lenticular lenses are a type of lens used to make eyeglasses. They’re rarely used, but they can be of great benefit when you need them. Eyeglass manufacturers produce these lenses to correct severe ...

Lens caps are important for protecting expensive camera lenses from damage. Dust, grit, and other nasty things will all quickly spoil the quality of a shot, and can even permanently damage a lens if ...