Dr. Zeev ZalevskyThe NewScientist article Scratched glasses give perfect vision for any eyesight said
DITCH those bifocals. You might soon wearing spectacles whose lenses allow you to see clearly regardless of how long or short-sighted you are.
Zeev Zalevsky at Bar-Ilan University in Ramat Gan, Israel, has developed a technique to turn a standard lens into one that perfectly focuses light from anything between 33 centimeters away and the horizon.
It involves engraving the surface of a standard lens with a grid of 25 near-circular structures each 2 millimeters across and containing two concentric rings. The engraved rings are just a few hundred micrometers wide and a micrometer deep. “The exact number and size of the sets will change from one lens to another,” depending on its size and shape, says Zalevsky.
Zeev Zalevsky, Ph.D. is Senior Lecturer,
Department of Engineering,
Center for Advanced Materials and Nanotechnology,
Zeev earned his B.Sc. and Ph.D. degrees in electrical engineering from Tel-Aviv University in 1993 and 1996 respectively. He is currently a faculty member in the school of engineering in Bar-Ilan University, Israel. His major fields of research are optical super resolution, in-fiber devices, electro-optical devices for optics communication, optical computing, RF-photonics, 3-D mapping and optical beam shaping. He has published four books, several book chapters, more than 150 refereed papers, and holds about 15 issued patents.
He authored Integrated Nanophotonic Devices, coauthored Optical Superresolution and The Fractional Fourier Transform: with Applications in Optics and Signal Processing, and coedited Coherent Light Microscopy: Imaging and Quantitative Phase Analysis. His papers include Space-bandwidth product of optical signals and systems, New signal representation based on the fractional Fourier transform: definitions, and Superresolving optical system with time multiplexing and computer decoding.
Zeev’s patents include Optical method and system for extended depth of focus, Range mapping using speckle decorrelation, Method and system for super resolution, Optical method and system for enhancing image resolution, Phase-only filter for generating an arbitrary illumination pattern, All optical extended “depth-of field” imaging system, Synthesis of light beams, and Image compression.
Read Zeev Zalevsky wins ICO Prize for 2008.