CR39 Round Top / Flat Top / Blended Top (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, 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
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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.
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1.523 Mineral Glass Lenses
1) Refractive index ND: 1.523
2) Density: 2.533
3) Abbe number: 60.5
4) Visible light transmission rate: 92%
5) 1.523 single vision lenses
Color: White, Pink, Photo brown, Photo grey
Diameter: 56mm, 60mm, 65mm
Powers:
a) For 56mm/60mm Sph: 0.00 to +/-6.00
b) For 65mm Sph: 0.00 to +/-6.00 / Cyl: +/-0.25 to +/-2.00
RX Power: Sph: 0.00 to +/-6.00 / Cyl: +/-2.25 to +/-4.00
6) Uncoating, Multi-coated(AR), AR&EMI treatment available in greenish and bluish color
7) Both finished and semi finished
8) Semi-finished lenses
Base: 1.00, 2.00, 3.00, 4.00, 5.00, 6.00.
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CR-39 1.499 Progressive Lenses
Finished lenses:
1) Imported Israel moulds
2) Normal corridor (17mm):
a) Good for medium and large size frames
b) Popular in European countries
3) Short corridor (14mm):
a) Good for small and medium size frames
b) Popular in Asia and South America
4) Power range:
a) Plano ~ +3.00 / ADD +1.00 ~ +3.00
b) -0.25 ~ -2.00 / ADD +1.00 ~ +3.00
Semi-finished lenses:
1) Diameter: 75mm, 70mm
2) Normal corridor (17mm), Short corridor (14mm)
3) Base: 200, 400, 600, 800
4) Add: +1.00 ~ +3.00.
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CR-39 1.499 Lenticular Lenses
1) Nd=1.499
2) Power range: Sph: +6.50 ~ +20.00 Cyl: 0.00 ~ -4.00
3) Diameters: 65/40mm, 68/40mm
4) Normal lenticular and omega lenticular available.
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