Quick Information
- Origin: PRC
Description
SEMIX Semi-Finished Single Vision Uncoated Blank
Specifications and Availability
- Material : 1.67 Index Resin (nd=1.665, Abbe=32, Specific gravity=1.35)
- Lens Size : 70mm Diameter with optics centered
- Tolerance of Center & EdgeThickness : ± 0.3mm
- Tolerance of Diameter : ± 0.5mm
Ultra High Index 1.67 75mm Aspherical Blank Data Sheet
| Nominal Base curve |
Actual convex curve |
Sagitta depth Gauge |
Far vision Convex |
Concave | Power Range |
Center Thickness |
Edge Thickness |
| (D) | (N=1.665) (D) |
50 mm bell (mm) |
Radius (R1 in mm) |
Radius (R2 in mm) |
(D) | (mm) | (mm) |
| 0.50 | 0.50 | 0.23 | 1333.41 | 90.41 | -5.00 to -20.00 |
6.6 | 14.0 |
| 1.00 | 1.06 | 0.48 | 645.32 | 90.41 | -3.50 to -4.75 |
6.7 | 13.0 |
| 2.00 | 2.29 | 1.08 | 290.20 | 90.41 | -2.50 to -3.25 |
6.7 | 12.0 |
| 3.00 | 3.45 | 1.63 | 192.83 | 90.41 | -1.50 to -2.25 |
6.7 | 11.0 |
| 4.00 | 5.32 | 2.52 | 125.03 | 90.41 | -1.25 to +1.25 |
7.2 | 9.5 |
| 5.00 | 6.62 | 3.16 | 100.51 |
