Substrate: H-K9L / N-BK7 /JGS1 or other material
Dimensional Tolerance: ±0.1mm
Thickness Tolerance: ±0.05mm
Surface Flatness:PV-0.5@632.8nm
Surface Quality: 40/20
Edges: Ground , 0.3mm max. Full width bevel
Clear Aperture: >85%
Beam Deviation: <30arcsec
Coating: Rabs<0.5%@Design Wavelength on transmission surfaces
Rabs>95%@Design Wavelength on reflect surfaces
Reflect Surfaces: Black Painted