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Specifications Material: BK7, Grade A fine annealed
Diameter Tolerance: +0 /- 0.10mm
Thickness Tolerance: +/- 0.10mm
Surface flatness: Lambda/4
Surface quality: 60 - 40 scratch and dig
Coating: Aluminized with MgF2 protection layer
Reflectivity: R > 50% @ 120 - 200nm, R > 70% @ 200 - 850nm
Angle of incidence 45°
