Why Fresnel zone plates? The zone plate produces a focus that is only 8 µm from the lens compared with around 200 µm for an objective. Unlike an objective lens, the FZP can be fabricated directly onto ...

The Fresnel Zones are 3D polygons which should not be obstructed by anything. With this solution, the wireless communications operators can easily check the existence of obstacles, ...

Optical Fresnel zone plate flat lenses made entirely of colored photoresist through an i-line stepper. Light: Science & Applications , 2025; 14 (1) DOI: 10.1038/s41377-024-01725-6 Cite This Page : ...

The use of concentric rings on a flat lens isn't new — a precursor, called a Fresnel zone plate, tries to do the same trick but is unable to eradicate chromatic aberration.

A novel lensless imaging technique, utilizing a programmable Fresnel zone aperture, offers high-resolution, artifact-free imaging with compact, cost-effective hardware. This method enhances ...

One existing type, called a Fresnel zone plate (FZP), uses concentric ridges to focus light, rather than a thick, curved ...

If Fresnel lenses interest you, we’ve taken a look in the past at their history. Posted in green hacks Tagged fresnel, lens, optics. Post navigation.