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Optical Plastic Lens SEMI-FINISHED LENS

Clex 1.499 Progressive (14mm) Lens

Material : 1.499 Index Resin (Ne=1.499, Abbe=58, Specific gravity=1.32)
Add Power : +1.00 to +3.50 in 0.25D steps.
Corridor Length=14mm

CONVEX SURFACE Concave
Curve
C.T
(mm)
E.T
(mm)
Dia
(mm)
Nominal
Curve
True
Curve
Sag
(Sagitta :40mm)
Sag
(Sagitta :50mm)
Radius
Radius
1.499 1.530
2.50 2.68 2.85 1.07 1.67 185.95 126.50 10.5 12.5 75
4.50 4.04 4.29 1.61 2.52 123.53 83.00 9.8 13.2
6.50 6.01 6.38 2.40 3.78 83.03 10.7 11.0
8.00 7.34 7.79 2.94 4.65 68.00 12.4 10.0
Center Thickness:0.5mm Edge Thickness:0.5mm Diameter Ranges:0.5mm

Add Prism(Down):
ADD 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50
Prism 0.66 0.83 0.99 1.16 1.32 1.49 1.65 1.82 1.98 2.15 2.31

Prescription Range:
Nominal Base Curve Recommended Diopter in Base Cylinder
2.50 -10.00 to -4.25 0-6.00
4.50 -4.00 to +2.00 0-6.00
6.50 +2.25 to +4.50 0-6.00
8.00 +4.75 to +7.00 0-6.00