Sell photochromic lens

详情

This lens are produced of high quality, low density, and middle index (1.*6) photochromic monomers. The photochromic dyes are fully incorporated into the material rather than applied to the surface. The lenses keep the ability to respond to UV light longer and are more color consistency. Refractive Index N=1.*6 ABBE Number V=*2 Density 1.*4g/cm3 They can reach *0% ï&frac*2;� *1% transmittance after *5 minutes of darkening by ISO standard solar simulator. When faded indoors, Gray and Brown lenses return back to *0% ï&frac*2;� *3% transmittance within 2 minutes. In clear state, transmission of these type lenses may reach *0%, and almost without base color. After darkening by ISO standard solar simulator, the transmittance may reach *5%**0%.These colours of lenses are also fashionable, and well accepted by the different generations, especially young people.We have brown, grey, pink, blue, purple.