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T WG71050 E4 Ø1" ZnSe Broadband Precision Window, AR Coated: 2 13 µm material_cerium oxide 72 mm Parallelism ≤5 arcsec 72 mm Parallelism ≤5 arcsec <1 arcmin ≤5 arcsec <3 arcmin ≤5 arcsec ≤5 arcsec Surface Flatnessa ≤λ 10 over CA ≤λ 10 over CA ≤λ 10 over CA ≤λ 10 over CA Transmitted Wavefront Errora λ 4 λ 4 Surface Quality 20 10 Scratch Dig 20 10 Scratch Dig 20 10 Scratch Dig 40 20 Scratch Dig 20 10 Scratch Dig 20 10 Scratch Dig AR Coating Range 400 1100 nm ( AB Coating) Reflectance over AR Coating Rangeb Ravg < 1 Six 10 100Base T TX and Two 100Base FX
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