Needless to say, the views we get through modern lenses are a lot more realistic ... This became the de facto theory for light, known as the Huygens-Fresnel principle until Maxwell’s ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes.

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 next difficulty is to explain diffraction. To do so, Fresnel replaced Huygens' isolated spherical waves by purely periodic trains of spherical waves, and made use of the principle of interference.

One of the most interesting bits of information relates to the lens: according to Sony it's a Fresnel lens. That's quite a big deal, because it affects how well you'll see the PSVR 2 display.