Terrya
04-02-2004, 07:24 PM
Anyone know if polycarbonate lens have a sprayed on Polarized coating instead of the standard process?
I found this on a Web page while searching...I could only find one reference about it.
When choosing a lens type, keep in mind the polarizing filter is sprayed onto polycarbonate lenses. This is one big difference in lens types. Most glass and CR-39 polarized lenses have the polarization filter encapsulated between outer layers in order to protect the filter from being removed or scratched. "Each time you clean a polycarbonate lens, you can remove some of the polarizing filter that was sprayed on," comments Stone. "Over time this can cause all of the polarization to be removed from the lenses, thus making your sunglasses no better than any other pair."
I found this on a Web page while searching...I could only find one reference about it.
When choosing a lens type, keep in mind the polarizing filter is sprayed onto polycarbonate lenses. This is one big difference in lens types. Most glass and CR-39 polarized lenses have the polarization filter encapsulated between outer layers in order to protect the filter from being removed or scratched. "Each time you clean a polycarbonate lens, you can remove some of the polarizing filter that was sprayed on," comments Stone. "Over time this can cause all of the polarization to be removed from the lenses, thus making your sunglasses no better than any other pair."