| Diameter Tolerance | +0/-0.005" (+0/-0.13 mm) |
| Center Thickness Tolerance | ± 0.008" (± 0.2 mm) |
| Design Wavelength | 10.6 microns |
| Focal Length Tolerance | ± 2% |
| Surface Quality | 60/40 |
| Clear Aperture | 90% Outer Diameter |
| Wedge Angle | <3 arc min |
| Surface Irregularity | 1/20 wave at 10.6 microns |
| Coating Part Number | BBAR-ZNSE-8-12 |
ZnSe Positive Meniscus AR Coated Lens
$340.00 – $625.00