| SKU ZX000878（Ø12.5mm） SKU ZX000901（Ø25mm） |
| Optical Specifications |
| Laser Line（nm） |
638 |
| Blocking Level（OD） |
6 |
| Cutoff（cm-1） |
50 |
| Cutoff（%） |
<0.5% |
| Pass Band Level（%） |
90 |
| Pass Band Ripple（%） |
4 (except for 1064) |
| Angle of Incidence（degrees） |
0 - 1 |
| Physical Specifications |
| Filter thickness (mm) |
12.5 + 0 / -0.1 or 25 + 0 / -0.2 |
| Clear Aperture (mm) |
12.5（8 inch）or 25 （21 inch) |
| Outer Diameter (mm) |
3.0 + / - 0.1 |
| Ring mounted |
5.0 + / - 0.1 |
| Ring Thickness (mm) |
yes |
| Scratch / Dig |
60 / 40 |
| Reliability |
| Environmental Testing |
MIL-STD-810F |
| Mechanical Durability |
MIL-C-48497A |
