home > products > ophthalmic lens >semi-finished LENS
Optical Plastic Lens SEMI-FINISHED LENS

1.60 Progressive (15mm) Lens

Material : 1.60 Index Resin (Ne=1.597, Abbe=40, Density=1.34)
Add Power : +1.00 to +3.50 in 0.25D steps
Corridor Length : 15mm

CONVEX SURFACE Concave
Curve
C.T
(mm)
E.T
(mm)
Dia
(mm)
Nominal
Curve
True
Curve
Sag
(sagitta:40mm)
Sag
(sagitta:50mm)
Radius Radius
2.25 2.19 0.73 1.14 273.195 83.00 8.0 13.9 75
4.25 5.14 1.71 2.69 116.228 8.4 10.5
5.50 6.52 2.18 3.42 91.537 8.8 9.3
7.50 8.78 2.94 4.65 68.000 12.9 10.1

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 0.35 0.44 0.53 0.61 0.70 0.79 0.88 0.96 1.05 1.14 1.23

Prescription Range:
Nominal Base Curve Recommended Diopter in Base Cylinder
2.25 -13.00 to -3.50 0-6.00
4.25 -3.25 to +1.25 0-6.00
5.50 +1.50 to +4.75 0-6.00
7.50 +5.00 to +7.00 0-6.00