| Products -> Lens -> Achromatic Lens |
| Material | Optical Glasses |
| Design Wavelength | 480, 546.1, 643.8nm |
| Dimension Tolerance | +0/-0.2mm |
| Thickness Tolerance | ±0.2mm |
| Surface Quality | 60/40 scratch and dig |
| Power(fringe@633nm) | 3 |
| Irregularity(fringe@633nm) | 0.5 |
| Centration | <3 arc minutes |
| Focal Length Tolerance | ±2% |
| Clear Aperture | >90% |
| Chamfer | Protective <0.5mmx45deg |
| Coating | Single layer MgF2 coating @550nm |
 |
 |
Positive |
Negative |
| Part
No. |
f(mm) |
Diameter(mm) |
Tc(mm) |
fb(mm) |
Material |
| DBT9001 |
25.0 |
12.7 |
5.6 |
22.25 |
K9+ZF2 |
| DBT9002 |
30.0 |
12.7 |
5.3 |
27.36 |
K9+ZF2 |
| DBT9003 |
40.0 |
12.7 |
4.7 |
37.78 |
K9+ZF2 |
| DBT9004 |
50.0 |
12.7 |
4.4 |
48.00 |
K9+ZF2 |
| DBT9005 |
60.0 |
12.7 |
4.1 |
58.13 |
K9+ZF2 |
| DBT9006 |
75.0 |
12.7 |
3.9 |
73.23 |
K9+ZF2 |
| DBT9007 |
50.0 |
25.4 |
9.8 |
44.52 |
ZBaF52+ZF4 |
| DBT9008 |
75.0 |
25.4 |
8.5 |
70.39 |
K9+ZF2 |
| DBT9009 |
100.0 |
25.4 |
6.5 |
97.05 |
K9+ZF2 |
| DBT9010 |
125.0 |
25.4 |
6.1 |
120.90 |
K9+ZF2 |
| DBT9011 |
150.0 |
25.4 |
5.8 |
146.10 |
K9+ZF2 |
| Part
No. |
f(mm) |
Diameter(mm) |
Tc(mm) |
fb(mm) |
Material |
| DBT9101 |
-25.0 |
12.7 |
5.67 |
-27.5 |
K9+F4 |
| DBT9102 |
-40.0 |
12.7 |
5.34 |
-42.5 |
K9+F4 |
| DBT9103 |
-50.0 |
25.4 |
7.22 |
-53.3 |
K9+F4 |