What is the chemical coating for UV protection used on eye glass lenses?
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Specifically referring to the clear coating, not the mirror coating or tinted coating used for sunglasses.
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Answer:
I believe what you're referring to is a mixture of soluble organic dyes and metallic oxide pigments. In the process of making the glasses, these dyes are added to the liquid form of the lens. Once solidified, they form a protective coating that both absorbs and reflects UV light.
Andrew Zeng at Quora Visit the source
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