cheapchips
Veteran
Some Harvard researchers have managed to use 0.002mm titanium dioxide fins to create a totally flat lense. The fins act as wave guide, bending light as it passes through.
I saw this research last year when it was in the non visible spectrum but they've moved it on really quickly.
They're not suggesting any downsides that I could see. If anything, metalenses can be more precise than traditional ones.
Production can use fairly cheap existing lithography techniques. It suggests that VR with a more glasses-like form factor is not that far away. Pretty surprised, as I thought lenses would be the real sticking point for at least a decade.
Actual article, rather than my naff abstract:
https://www.seas.harvard.edu/news/2...pectrum-sees-smaller-than-wavelength-of-light
(The days of camera bumps are also numbered )
I saw this research last year when it was in the non visible spectrum but they've moved it on really quickly.
They're not suggesting any downsides that I could see. If anything, metalenses can be more precise than traditional ones.
Production can use fairly cheap existing lithography techniques. It suggests that VR with a more glasses-like form factor is not that far away. Pretty surprised, as I thought lenses would be the real sticking point for at least a decade.
Actual article, rather than my naff abstract:
https://www.seas.harvard.edu/news/2...pectrum-sees-smaller-than-wavelength-of-light
(The days of camera bumps are also numbered )