Comment Re:Utterly misleading post. (Score 1) 99
The problem is that doesn't work.
This would work if you place the converter just in front of the retina. (but then it wouldn't work as the eye is not transparent to IR)
If you place it in front of the eye lens - contact lenses count - then you need the output visible light to be going in the same direction as the input IR light.
There are no common physical processes that can do this.
Hence, unfortunately, you need to actually have lenses and separate emitters.
In principle, this might change if you could have phase preserving detectors at 100nm resolution across the front of the 'contact lens' and phase preserving emitters at 100nm resolution across the back.
Naively, this will require significant computation and processing at 500000GHz *10000 megapixels.
So, not in the near term.
(I would be astounded if it happens in the next 50 years)