Neutral Density Filter-Absorptive | |
Material | Absorptive Glass |
Diameter Tolerance | +0.0/-0.2mm |
Clear Aperture | >90% |
Surface Quality | 80/50 scratch and dig |
Flatness | <2λ@632.8nm |
Parallelism | <5 arc min |
Chamfer | Protective<0.5mm×45° |
OD Tolerance | OD±10% |