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PolySA Polycarbonate Flat Top 28mm & 35mm x 76 (High Index 1.586) 75mm Diameter Lens Blank- Segment Displacement: 6mm in, 6mm down Adds in 0.25 diopter steps from 1.00 to 3.00 |
| Flat Top 28mm | ||||||
| Nominal Curve | True Curve | Radius mm | SAG at 50mm | Nominal Concave | Center Thickness | Edge Thickness |
| 0.50 | 0.51 | 1039.216 | 0.30 | 5.10 | 10.1 | 17.1 |
| 2.00 | 2.00 | 265.000 | 1.18 | 4.00 | 11.6 | 14.6 |
| 4.25 | 4.23 | 125.296 | 2.52 | 4.80 | 9.0 | 9.9 |
| 6.00 | 5.95 | 89.076 | 3.58 | 6.00 | 8.60 | 8.7 |
| 8.50 | 8.50 | 62.353 | 5.23 | 9.80 | 9.4 | 12.0 |
| Flat Top 35mm | ||||||
| Nominal Curve | True Curve | Radius mm | SAG at 50mm | Nominal Concave | Center Thickness | Edge Thickness |
| 2.00 | 1.98 | 267.676 | 1.17 | 4.00 | 11.6 | 14.5 |
| 4.25 | 4.23 | 125.296 | 2.52 | 4.90 | 9.1 | 9.9 |
| 6.00 | 5.95 | 89.076 | 3.58 | 6.00 | 8.9 | 8.6 |
| 8.50 | 8.51 | 62.280 | 5.24 | 9.10 | 9.3 | 12.0 |