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Flat Spray-On Optical Lens

Doesn't sound quite like a Fresnel lens either, at least unless there is a very careful pattern sprayed on.  Interesting, in any case...

Flat Spray-On Optical Lens Created

May 23, 2013 — A University of British Columbia engineer and a team of U.S. researchers have made a breakthrough utilizing spray-on technology that could revolutionize the way optical lenses are made and used.

Nearly all lenses -- whether in an eye, a camera, or a microscope -- are presently curved, which limits the aperture, or amount of light that enters.

"The idea of a flat lens goes way back to the 1960s when a Russian physicist came up with the theory," Chau says. "The challenge is that there are no naturally occurring materials to make that type of flat lens. Through trial and error, and years of research, we have come up with a fairly simple recipe for a spray-on material that can act as that flat lens."

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( 2 comments — Leave a comment )
ghostwolf
May. 24th, 2013 02:55 am (UTC)
Interesting. I wonder how that will affect telescopes - no more grinding huge pieces of glass and hoping someone didn't miss a decimal place.
kayshapero
Jun. 20th, 2013 07:56 am (UTC)
First thing I thought of. Right along with interstellar laser launchers and stuff like that there.
( 2 comments — Leave a comment )