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Lense replacement: Multiwavelength achromatic metasurfaces

DjNDB
Honored Guest
Physicists at Harvard have developed an ultra-thin replacement for lenses without chromatic abberation.
It sounds like it could be ideal for creating a super thin HMD with wide FOV, since you could basically put a flat surface directly on the Display which refracts the light into arbitrary directions.

I am no optics expert at all, so take this with a grain of salt. There might be issues in the details I don't know yet like a limited resolution, but in theory it could be awesome. It might be expensive to produce (compared to regular lenses), at least in low numbers, but it might as well be possible to use a process similar to pressing CDs to create the nanostructure covered surfaces in high numbers, making it possibly quite cheap long term.
On the other hand it could be as demanding as producing Microchips, requiring monocrystalline silicon.

A lot of speculation from my part, so I hope someone knows more and adds to the discussion.
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