Lens Technical Information

Quality sunglasses offer a polarized lens.  All of Spectrum sunglasses are polarized and we use the Triacetate Cellulose (TAC) polarized process.  The TAC process uses a multiple layer production.  

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

TAC polarized sunglasses lenses are effective cutting strong light, reflection and scattering light. It makes light rays become parallel. TAC polarized lenses makes the scenery more clear and soft.  Spectrum sunglasses have zero distortion of scenery and the feeling of Vertigo.

TAC produced lens are ultra-light and are highly impact resistant.

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.