NEW Edmund Optics 89-569 Germanium AR Coated Precision Window 50mm Dia 2mm Thick

NEW Edmund Optics 89-569 Germanium AR Coated Precision Window 50mm Dia 2mm Thick

Brand: Edmund Optics Stock Number: 89569 Substrate Material: Optical Grade Germanium (Ge) Anti-Reflection Coating: Both Sides Coated (S1 and S2) Coating Range: BBAR Coated for 3.0 to 5.0 microns (3-5 um) Reflectance: Average reflectance less than 3 percent across specified range Window Diameter: 50.00 mm (+0.0/-0.1 mm tolerance) Window Thickness: 2.00 mm (+/-0.10 mm tolerance) Clear Aperture: 45.00 mm (90 percent of overall diameter) Surface Quality: 60-40 Scratch-Dig Parallelism: Within 1 arcminute