menu

Engraved Lenses Offer A New Way To See Clearly

Engraved Lenses Offer A New Way To See Clearly
Design

An interesting technique may provide a new way to help eyeglass wearers.

Dan Gould
  • 4 october 2010

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.

The rings shift the phase of the light waves passing through the lens, leading to patterns of both constructive and destructive interference. Using a computer model to calculate how changes in the diameter and position of the rings alter the pattern, Zalevsky came up with a design that creates a channel of constructive interference perpendicular to the lens through each of the 25 structures. Within these channels, light from both near and distant objects is in perfect focus.

“It results in an axial channel of focused light, not a single focal spot,” Zalevsky says. “If the retina is positioned anywhere along this channel, it will always see objects in focus.”

Zeev Zalevsky

New Scientist: “Scratched glasses give perfect vision for any eyesight”

Image by Veer.

Veer has recently relaunched its site, Veer.com, with a simplified, easy to use interface allowing for enhanced and simplified image search.  The site, which is a go-to source for creative and affordable stock photography, illustrations, fonts and merchandise, helps people add style to business, marketing, and personal design projects.

+#design
+Advertising
+Culture
+Design
+Electronics & Gadgets
+eyeglasses
+Future of Health
+glasses
+Health
+Science
+technology
+vision
Trending

NYC Announces A Massive $136 Million Creative Hub In Brooklyn

Cities
TREND REPORT


NEW: ENTERTAINMENT DEBRIEF
Media in the age of omnipresent tech


DOWNLOAD NOW

PSFK MEMBERSHIP


JOIN RETAIL INTELLIGENCE PLATFORM
Get access to retail reports and 20,000 retail insights


LEARN MORE

Retail Today
Sustainability Today
No search results found.