| Material: | K9 (BK7), Optical sapphireglass, fused silica, JGS1, |
|---|---|
| Diameter: | +/-0.005mm |
| Tolerance: | +/-0.005mm |
| Sphericity: | 3(0.5) |
| Surface Quality: | 40/20 |
| Coating: | with or without |
| Material | K9 (BK7), Optical sapphireglass, fused silica, JGS1, ZnSe, Zns, Ge, Caf2, b270, LaF52, Schott glass |
| Diameter | 1~150mm, 1mm, 2mm, 3mm… |
| Dia. Tolerance | +/-0.002mm |
| Roundness | 0.003-0.005 |
| Surface Accuracy | <2λ |
| Irregularity | λ/2 @632.8nm |
| Surface Quality | <40/20 scratch/dig |
| Clear Aperture | >92% |
| Focal length tolerance | +/-1% (+/-5% for 400 series) |
| Centration | 3 arc min or better |
| Coating | Upon customer request |
