Optics manufacture is not easy – a piece of glass needs to be through water and fire, literally. And then more… It is even harsher for emerging metasurface technologies, involving solvents, developers, ion-etching, etc. The fourth generation optics (4G Optics), making feasible for thin planar films to be competitive with conventional optics in most applications and enabling performance features practically prohibited for other planar optics technologies that suffer from low efficiency, haze, and small area, it also is making a historical breakthrough in optics manufacturing by dramatically reducing its impact on environment along with time and cost. The 4G optics makes it possible a 1000x reduction of required material quantities compared to high quality optics of similar functionality, and at least a 1000x reduction of manufacture time, along with customization and reconfigurability of optical functions, and opportunities of recycling both the materials and substrates.
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