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Specifications Material: BK7, Grade A fine annealed
Dimension Tolerance: +/- 0.10mm
Radius: +/- 1%
Surface roughness RMS (nm) < 1.00 nm
Optical face: super finished
Coating: Al + protection layer (MgF2) transparent to UV
Reflectivity: R > 50% @ 120 - 200nm, R > 70% @ 200 - 850nm
Angle of incidence 45°
