cheap Optical lens CR-39 1.499 plastic lens Power U/C HC HMC Green HMC Blue & EMI HMC Magenta 56mm G2(+) 0.75 0.95 1.57 1.70 1.95 G4(+) 0.81 1.01 1.63 1.76 2.01 G6(+) 0.87 1.07 1.69 1.82 2.07 G2/2(+/-) 0.81 1.01 1.63 1.76 2.01 G4/2(+/-) 0.87 1.07 1.69 1.82 2.07 G6/2(+/-) 0.93 1.13 1.75 1.86 2.11 Power UC HC HMC Green HMC Blue & EMI HMC Magenta 60mm G2(-) 0.40 0.60 1.22 1.35 1.60 G4(-) 0.44 0.64 1.26 1.39 1.64 G6(-) 0.50 0.70 1.32 1.45 1.70 G2(+) 0.43 0.63 1.25 1.38 1.63 G4(+) 0.47 0.67 1.29 1.42 1.67 G6(+) 0.53 0.73 1.35 1.48 1.73 G2/2(-/-) 0.46 0.66 1.28 1.41 1.66 G4/2(-/-) 0.50 0.70 1.32 1.45 1.70 G6/2(-/-) 0.56 0.76 1.38 1.51 1.76 G2/2(+/-) 0.50 0.70 1.32 1.45 1.70 G4/2(+/-) 0.54 0.74 1.36 1.49 1.74 G6/2(+/-) 0.60 0.80 1.42 1.57 1.82 CR-39 1.499 Bifocal Lens (28mm/70mm) Index 1.499 Power or Base UC HC HMC Round Top (65mm) 0.00~+3.00/+1.00~+3.00 0.50 0.80 1.37 Blended Top 0.00~+3.00/+1.00~+3.00 0.93 1.23 1.80 Flat Top 0.00~+3.00/+1.00~+3.00 1.06 1.36 1.93 Semi-finished 400B,600B,800B,1000B 1.25 Round Semi-finished 400B,600B,800B,1000B 1.37 Flat Semi-finished 400B,600B,800B,1000B 1.62 Note: 1) Price term: FOB Shanghai 2) Payment: T/T