Specification :

CR-39 Round Top Bifocal Lenses
Finished lenses:
a) Nd: 1.499
b) Power range:
Sph: 0.00 ~ -2.00 / Add: + 1.00 ~ + 3.00
Sph: 0.00 ~ + 3.00/ Add: + 1.00 ~ + 3.00
c) Diameter: 70/ 28mm, 70/ 24mm, 65/ 28mm
Semi-finished lenses:
a) Diameter: 70/ 28mm, 70/ 24mm, 65/ 28mm
b) Base: 200, 400, 600, 800
c) Add: + 100 ~ + 300
d) Semi-finished ST28 and ST24 round top bifocal lens

CR-39 1.499 Flat Top Bifocal Lenses
Finished lenses:
a) Nd: 1.499
b) Power range:
Sph: 0.00 ~ -2.00 / Add: + 1.00 ~ + 3.00
Sph: 0.00 ~ + 3.00/ Add: + 1.00 ~ + 3.00
c) Diameter: 70/ 28mm, 65/ 28mm
Semi-finished lenses:
a) Diameter: 70/ 28mm, 65/ 28mm
b) Base: 200, 400, 600, 800
c) Add: + 100 ~ + 300

CR-39 1.50 Invisible Bifocal Lenses
Finished lenses:
a) Nd: 1.499
b) Power range:
Sph: 0.00 ~ -2.00 / Add: + 1.00 ~ + 3.00
Sph: 0.00 ~ + 3.00/ Add: + 1.00 ~ + 3.00
c) Diameter: 70/ 28mm, 65/ 28mm
Semi-finished lenses:
a) Diameter: 70/ 28mm, 65/ 28mm
b) Base: 200, 400, 600, 800
c) Add: + 100 ~ + 300
d) Semi-finished ST28, ST24 and ST32 invisible lenses

1.56 Round Top / Flat Top / Invisible Bifocal Lenses
Finished Lenses:
1) Power Range:
Power: -0.00~ -3.00 Add: + 1.00~ + 3.00
Power: + 0.00~ + 3.00 Add: + 1.00~ + 3.00
2) Size: 70/ 28mm, 70/ 24mm
3) Coating Available: Uncoated, HC, HC Tintalbe, HMC, HMC+ EMI
4) Multi coated in color: Green, Blue, Purple, Gold
Semi-Finished Lenses:
1) Base: 200B, 400, 600B, 800B
2) Size: 70/ 28mm

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