Headlights are a critical safety feature for every driver, especially at night or in poor weather. Knowing whether your car ...

New research reveals a surprising geometric link between human and machine learning. A mathematical property called convexity ...

If you have ever played around with lenses, you’ll know that a convex lens can focus an image onto a target. It can be as simple as focusing the sun with a magnifying glass to burn a hole in … ...

The team developed both convex acoustic lenses for focused transducers and flat-form acoustic lens designs.

This paper presents a comprehensive study on the design and fabrication of a convex acoustic lens for capacitive micromachined ultrasonic transducers (CMUTs) using polydimethylsiloxane (PDMS). The ...

A structural design equation for multidielectric Fresnel zone plate (ZP) lens is outlined in this letter. Based on this equation, multidielectric ZP lenses/lens antennas are studied numerically in the ...

What is a mirror lens exactly? And have they got a new lease of life when used on mirrorless cameras? I've been trying them ...

Or the lens can curve outward – called convex – to fix far-sightedness. You can tell what kind of lenses you have by looking closely at them.

The straight side is pointed outward. At the other end is the objective lens, a concave-convex lens, which curves inward on one side and outward on the other. The convex side faces outward.

Most lenses have a consistent curve that helps bring light to a focus. A concave lens curves inward and helps with nearsightedness, while a convex lens curves outward and helps with farsightedness.

Periscope camera lenses have grown in popularity, especially in the premium smartphone segment. But what is a periscope zoom lens? We explain.