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Armorlite™ - Trifocal 7x25 (Standard Index 1.498) 75mm Diameter Lens Blank Segment Displacement: 6.75mm in, 5mm down Adds are in 0.25 diopter steps from 1.50 to 3.00 |
| Nominal Curve | True Curve | Radius (mm) | SAG at 50 | Nominal Concave | Edge Thickness | Center Thickness | Adds in 0.25 Diopter Steps |
| 4.50 | 4.56 | 116.228 | 2.72 | 6.00 | 11.0 | 8.8 | 1.50 to 3.00 |
| 6.25 | 6.31 | 83.994 | 3.81 | 6.00 | 7.0 | 7.5 | 1.50 to 3.00 |
| 8.25 | 8.35 | 63.473 | 5.13 | 6.00 | 7.0 | 10.9 | 1.50 to 3.00 |