Flat lens offers distortion free images

[porktaco]

http://www.seas.harvard.edu/news-events/press-releases/flat-lens-offers-perfect-image

 

[Matus]

Very interesting use of phase-shifting (which by itself is not new) technique. If they will manage to push the wavelength than it could even be interesting for photography Question is how the lens handles rays that do not propagate parallel to the axis (or normal to the lens surface in this case).

 

[lynnb]

another reference to this on PetaPixel:
http://www.petapixel.com/2012/08/26...on-free-lens-thats-essentially-2d/#more-70933

 

[Jamie Pillers]

...Question is how the lens handles rays that do not propagate parallel to the axis (or normal to the lens surface in this case).

That's be the 'Summar effect'.