1.56 Blue Block Flat-Top Bifocal SHMC
1.56 Blue Block Flat-Top Bifocal SHMC
Refractive Index:n(e)=1.550
Abbe Value:40
Specific Gravity:1.17
70/28MM Coating:HMC,EMI
Multi color:Green
1.56 Blue Block Flat-Top Bifocal SHMC
Refractive Index:n(e)=1.550
Abbe Value:40
Specific Gravity:1.17
70/28MM Coating:HMC,EMI
Multi color:Green