| Diameter Tolerance | +0/-0.005" (+0/-0.13 mm) |
| Center Thickness Tolerance | ± 0.008" (± 0.2 mm) |
| Design Wavelength | 5.0 microns |
| Focal Length Tolerance | ± 2% |
| Surface Quality | 60/40 |
| Clear Aperture | 90% Central Diameter |
| Wedge Angle | <3 arc min |
| Surface Irregularity | 1/2 wave at 633 nm |
CaF2 Plano-Concave Lens
$115.00 – $595.00