(Including plane lens) The specification of rough of lens
| Diameter (mm) |
<30 |
31-70 |
71-150 |
150-300 |
| Diameter Tolerance (mm) |
0.2 |
0.3 |
0.4 |
0.5 |
| Thickness Tolerance (mm) |
0.5 |
0.5 |
0.5 |
0.5 |
| Edge Thickness Tolerance (mm) |
0.1 |
0.15 |
0.25 |
0.3 |
| Burr (mm) |
0.1 |
0.15 |
0.2 |
0.3 |
| Center Transparent Clearance (mm) |
0.3 |
0.4 |
0.5 |
0.6 |
| Surface Defect (mm) |
0.5 |
0.5 |
0.5 |
0.5 |
| Edge Damaged |
0.15 |
0.2 |
0.3 |
0.3 |
| Ellipticity |
In the range of diameter tolerance |
The specfication of Prism rough
| Maximum Linear Size of Rough pressing Section (mm) |
8-30 |
30-50 |
50-70 |
| Height Tolerance (mm) |
+1 |
+0.7 |
+0.5 |
| Other Straight Line Tolerance (mm) |
+0.2 |
+0.2 |
+0.2 |
| Angle Tolerance |
±30' |
±30' |
±30' |
| Burr (mm) |
0.2 |
0.2 |
0.3 |
| Surface Defect (mm) |
0.5 |
0.5 |
0.5 |
| Edge Damaaged (mm) |
0.3 |
0.3 |
0.5 |
| Mimimum Width of Top Platform (mm) |
1.0 |
1.0 |
1.0 |
| Minimum Height of Bottom (mm) |
1.0 |
1.0 |
1.5 |
The specification of Rough Preprocessing
| Diameter (mm) |
<20 |
21-30 |
31-50 |
51-70 |
| Diameter Tolerance (mm) |
+0.2 |
+0.2 |
+0.2 |
+0.25 |
| Thickness Tolerance (mm) |
±0.1 |
±0.1 |
±0.1 |
±0.1 |
| Edge Thickness Tolerance (mm) |
<0.1 |
<0.1 |
<0.12 |
<0.15 |
| Surface Sefect (mm) |
<0.2 |
<0.2 |
<0.2 |
<0.20 |
