Substrate: B270 /N-BK7 / H-K9L
Dimensional Tolerance: -0.1mm
Thickness Tolerance: ±0.05mm
Surface Flatness:3(1)@632.8nm
Surface Quality: 20/10
Line Width: Minimum 0.003mm
Edges: Ground , 0.3mm max. Full width bevel
Clear Aperture: 90%
Parallelism:<30”
Coating: Single Layer MgF2, Ravg<1.5%@Design Wavelength
Line/Dot/Figure: Cr or Cr2O3