Quality sunglasses offer a polarized lens. All of EARTH sunglasses are polarized and we use the Triacetate Cellulose (TAC) polarized process. The TAC process uses a multiple layer production.
Polarized lenses have the benefit of filtering out reflected light and glare off water, pavement and snow. TAC polarized lens are superior for fishing, boating, driving or any other glare intensive activity. TAC polarized lenses are the best ways to eliminate glare and UV light. Polarization is achieved by shutting out 100% of undesirable light and allowing 100% of desired light through the lenses.
Multi-layer composite complies with the international sunglasses lenses standard and UV400 UV sunglasses lenses standard. Thus, the polarized lenses can fully protect eyes. The first layer is a polarizing layer; core of the lens as it provides more than 99% of the polarizing effect, which can effective absorption of glare. Second and third layer for bonding, can effectively resist the cutting, baking, baking bend, cut pieces, tests of withstanding harsh environments. The fourth and fifth layer for UV-absorbing layer; absorbing 99% of UV-ultraviolet rays. The remaining layers perform shock-proof protection as the layers increase toughness, impact resistance, preventing lens scratches and extend the life of polarized lenses