bmaverick
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Yes there are UV grades and the flexible TPU(95A) can be printed as a lens perfectly.Lens technology is pretty complicated; UV resistance, clarity, impact resistance. I think that it is a tough (pun intended) specification, which is why I am doubtful that a home printed lens can meet it. If one regards the home printed as a disposable item, then it is a different story.
All the best,
Peter
TPU is the material used to make impact proof safety glass too. And I bet these were 3D Printed too!
TPU 3D Printed are the lenses used in impact resistant paint ball face helmets.