Try on an Oculus Rift or HTC Vive and one of the first things you’ll probably notice looking through the lenses are fine concentric circles, creating something many call ‘God Rays’—especially ...

You may know them best for their original use in lighthouses, where they're famously recognised as "the invention that saved a million ships". Or perhaps you initially think of their employment in ...

Knight Optical’s Fresnel Lenses are an industry-favourite for many engineers and R&D professionals specifying components for magnification and the collection of light. Known for their first-class ...

Earlier this week, Nikon introduced its new $1,200 28-75mm f/2.8 standard zoom lens, which we’re stoked to try out. The company also tucked a small tidbit about an upcoming lens in that release. The ...

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 ...

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 ...

The presence of god rays (or crepuscular rays, to use a more technical and less religious term) in virtual reality is an artifact from the use of Fresnel lenses in most headsets. Unlike a traditional ...

MOST astronomical telescopes employ reflection to focus starlight. A concave mirror creates an image from this light using a design pioneered in the 17th century, by Sir Isaac Newton. Those telescopes ...

In 2022, hype around extended reality (XR) devices and the metaverse is at an all-time high, but hardware hurdles continue to hold back headset development. The specialized optics required by ...