1.67 Optical Lens High scratch resistance HC/HMC EMI UV400 Superhard protection coating, tintable hard coating are available 1. ... )1.67 spheric and aspheric optical lens3) HC/HCT/HMC EMI UV4004) Power range:0_-2000/0_-600 High scratch resistance ... Super-hard protection coating, tintable hard coating are available HMC EMI UV400 coating available in green More information, please contact us ...