Engraved Lenses Offer A New Way To See Clearly
An interesting technique may provide a new way to help eyeglass wearers.
An interesting technique may offer a new way to help eyeglass wearers see clearer. Zeev Zalevsky, a researcher at at Bar-Ilan University has come up with a novel way to focus light from near and far.
New Scientist explains:
It involves engraving the surface of a standard lens with a grid of 25 near-circular structures each 2 millimetres across and containing two concentric rings. The engraved rings are just a few hundred micrometres wide and a micrometre deep. “The exact number and size of the sets will change from one lens to another,” depending on its size and shape, says Zalevsky.