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Optical Plastic Lens SEMI-FINISHED LENS

 1.56 Spheric Lens D75mm/80mm

 Material : 1.56 Index Resin (Ne=1.549, Abbe value=38, Specific gravity=1.28)
CONVEX SURFACE CONCAVE
SURFACE
C.T
(mm)
E.T
(mm)
Dia
(mm)
Nominal
Curve
True
Curve
Sag
(sagitta:40mm)
Sag
(sagitta:50mm)
Radius
Radius
1.549  
  0.50 0.49   0.18 0.28 1,109.70 90.50 8.9 16.2 75/80
  1.00 4.19   1.52 2.38 130.91 9.0 15.3
  2.00 2.26   0.82 1.28 242.83 8.8 14.0
  3.00 3.84   1.39 2.18 142.83 9.0 12.6
  4.00 3.59   1.30 2.04 153.00 8.9 10.7
  5.00 5.77   2.09 3.29 95.10 9.0 9.5
  6.00 6.86   2.49 3.93 80.00 9.8 8.9
  7.00 7.98   2.90 4.60 68.80 10.9 8.2
  8.00 8.86   3.23 5.13 61.95 12.5 8.0
Center Thickness:0.5mm Edge Thickness:0.5mm Diameter Ranges:0.5mm