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 ...

The most important thing to know about Fresnel lenses, before casually attempting to drop them into conversation, has to do with phonetics: "Fresnel" is pronounced "Fruh-NEL." If the silent "S" makes ...

Lenses are a necessary part of any head-mounted display, but unfortunately, they aren’t always easy to source. Taking them out of an existing headset is one option, but one may wish for a more ...

Innovative new optical components based on “birdbath”, holographic, and dynamic focus tuning effects are being tipped to replace Fresnel lenses in extended reality (XR) headset designs over the coming ...

The new Astera QuikPunch essentially takes everything that made the QuikSpot a success and scales it up. Taking cues from the popular 3” lens QuikSpot but scaling up in size, lux output, and beam ...

Fresnel lenses are all around us, but this vase puts the commonplace technology to work in an entirely new way. Borrowed From Old Lighthouses, A Method For Super-Powerful Solar Power With the help of ...