Making a traditional glass lens requires a lot of experience, skill, and patience grinding a piece of glass to the required shape, and is not for the casual experimenter. Making a glass Fresnel ...

Researchers have developed a groundbreaking method to produce Fresnel zone plates — paper-thin optical lenses — using ...

Like the solar 3D printer we saw last summer, [Johnie]’s build uses a giant Fresnel lens to focus sunlight onto a piece of wood. To get some control out of his build, a 2-axis bed was made from ...

Paper-thin optical lenses simple enough to mass produce like microchips could enable a new generation of compact optical devices. Researchers have fabricated and tested flat lenses called Fresnel zone ...