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'. 😛