| InstaShades® 1.50 Single Vision Gray Only (1.508 Index) 74mm Diameter Lens Blank Power Range: -8.50 - +6.50 |
| Nominal Curve | True Curve | Radius mm | SAG at 50mm | Nominal Concave | Edge Thickness | Center Thickness |
1.50 |
1.56 |
339.744 |
0.92 |
3.00 |
13.8 |
13.3 |
3.00 |
3.07 |
172.638 |
1.82 |
3.00 |
12.0 |
12.0 |
4.50 |
4.57 |
115.974 |
2.73 |
3.00 |
8.3 |
10.4 |
6.25 |
6.34 |
83.596 |
3.83 |
6.00 |
6.4 |
6.8 |
8.25 |
8.35 |
63.473 |
5.13 |
6.00 |
6.4 |
10.2 |