Specification :

CR-39 1.499 Finished Single Vision Plastic Resin Lenses
1) Refractive index: 1.499
2) Abbe value: 58
3) Specific gravity: 1.32
4) Raw materials are imported: PPG and AT
5) Up-to-date surface curvature design
6) Diameters: 50mm, 55mm, 60mm, 65mm, 70mm
7) Power range:
For 50mm, 55mm and 60mm:
a) S: Plano ~ + 8.00/ C: -0.25 ~ -2.00
b) RX power: CYL: -2.25 up to -4.00, -4.25 up to -6.00
For 65mm and 70mm:
a) S: Plano ~ -6.00/ C: -0.25 ~ -2.00
b) S: + 0.25 ~ + 6.00/ C: -0.25 ~ -2.00
c) RX power: CYL: -2.25 up to -4.00, -4.25 up to -6.00
8) Available for uncoated( UC) , hard-coated( HC) , hard coating-tintable ( HCT) and hard-multi coating ( HMC) ( AR-Coating) and EMI processing.
9) Semi-finished lenses:
Base: 2.00, 4.00, 6.00, 8.00

CR-39 Hi-Cylinder Spectacle Lenses / Rx Power Ophthalmic Lenses
1) Nd = 1.499
2) Power range:
a) Sph: -6.25~ -20.00, + 6.25~ + 10.00
b) Cyl: -2.25~ -4.00, -4.25~ -6.00
3) Diameter: 50 / 55 / 60 / 65 / 70mm
4) Coating: Uncoated / HC / Tintable HC / HMC / HMC + EMI

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