| Diameter Tolerance | +0/-0.005" (+0/-0.13 mm) |
| Center Thickness Tolerance | ± 0.008" (± 0.2 mm) |
| Design Wavelength | 4.0 microns |
| Focal Length Tolerance | ± 2% |
| Surface Quality | 80/50 |
| Clear Aperture | 90% Outer Diameter |
| Wedge Angle | <3 arc min |
| Surface Irregularity | 1 wave at 633 nm |
| Coating Part Number | HD-SI-3-5 |
| Substrate Material | Silicon |
Si Plano-Convex HDAR Coated Lens
$195.00 – $225.00