Aside from frightening small children, we have absolutely no idea why anyone would need a face-magnifying headpiece. But the video below gives us a chuckle every time we see it, and we figure a good ...

Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much ...

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 ...

We learned last week that PSVR 2 will use Fresnel lenses, which have a range of advantages over traditional lenses, but also come with a big downside: god rays. However, Sony may have a trick up its ...