Name1.56 hard coating resin lens Package2 pcs Refractive index1.56 Lens material Imported resin Diameter70/72mm CoatingGreen, blue FunctionRadiation protection, anti-fatigue Place of originDanyang, jiangsu Characteristics1)More clear: special coating process for perfect and comfortable visual effect. 2)More relaxed: resin lens is 0.83-1.5, while glass lens is 2.75-2.95. 3)Transmittance: for visible spectrum, resin lens is similar as glass lens; for ir, resin lens is better than glass lens; for uv, wavelength less than 0.4um declines soon, and less than 0.3um is almost fully absorbed.