Making a glass Fresnel lens with its concentric rings requires ... From dredging up our highschool physics lessons we are guessing that half the light is diffracted outwards rather than inwards ...

That compactness is what [WalkerDev] found attractive, and in the process discovered that stacking two different Fresnel lenses and putting them in a 3D printed housing yielded a very compact ...

Researchers have fabricated and tested flat lenses called Fresnel zone plates (FZPs), but did so for the first time using only common semiconductor manufacturing equipment, the i-line stepper ...

Imagine a world where augmented reality glasses are as lightweight and comfortable as everyday sunglasses, or where ...

A team with researchers at the University of Tokyo and JSR Corp. fabricated and tested flat lenses called Fresnel zone plates (FZPs), but did so for the first time using only common semiconductor ...