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Thread: UV protection on Polycore and Hoya untreated CR-39 lenses?

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  1. 08-07-2018, 12:00 PM #1
    Airegin
    Airegin is offline
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    UV protection on Polycore and Hoya untreated CR-39 lenses?

    Referring to sun lenses only. Does anyone happen to know if Polycore and Hoya CR-39 lenses without AR/scratch resistance have UV400 protection? Sadly I can't find this information anywhere.
    Last edited by Airegin; 08-07-2018 at 12:11 PM.
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