Light travels at different speeds based on the medium it passes through. For example, in a vacuum, it travels at 3.0 × 10^8 m/s in a straight line. But when directed towards glass, air, diamond, water ...

One of the oldest problems in optics has been solved. Rafael Gonzalez from Mexico's Tecnologico de Monterrey has come up with an almost comically dense equation that can be used to almost completely ...

Not an aberration: schematic drawing of the metalens (left), which is made of tiny titanium waveguides. The drawing on the right is of a single waveguide. (Courtesy Boubacar Kanté) A new type of ...

Given that vintage glass is not only holding its value but getting more expensive, digitally recreating some of that classic look digitally is a sound option. It also comes with an undo button. When ...

When you use DPReview links to buy products, the site may earn a commission. Image: Viltrox Viltrox has announced its first L ...

Ideal for laser-focusing applications, 10 to 30-mm Gradium Series lenses use glass with an axial gradient that changes the lens index by as much as 0.15 from front to back to correct aberrations. Two ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Back to Healio Contact lenses incorporating negative ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. NEW ORLEANS — Contact lenses may have a refractive ...