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Optical Plastic Lens SEMI-FINISHED LENS

 1.56 Photochromic Flat Top Lens(Brown/Gray)

Material : 1.56 Index Resin (Ne=1.549, Abbe=43, Specific gravity=1.14)
Segment Placement=5mm down~5mm in
Add Power=+1.00 to + 4.00 in 0.25D steps
Segment Size=27mm
CONVEX SURFACE CONCAVE
SURFACE
C.T
(mm)
E.T
(mm)
Dia
(mm)
Nominal
Curve
True
Curve
Sag
(sagitta:40mm)
Radius
Radius
1.549  
4.25 4.17   1.50 131.74 132.50 8.0  8.0 75
6.25 6.35   2.30  86.45 88.80 8.0  7.0
Center Thickness : 0.5mm Edge Thickness : 0.5mm Diameter Ranges : 0.5mm