Major Diameter: 66.29mm +/- 0.25mm
Minor Diameter: 59.94mm +/- 0.10mm
Overall Thickness: 4.00mm +/- 0.10mm
Major Diameter Thickness: 1.46mm +/- 0.10mm
Edge Bevels: 0.25mm Maximum x 45 Degrees, 3 Edges
Parallelism: 5 Arc Minutes Maximum
Concentricity: Diameters Within 0.25mm T.I.R
Radius @ Intersection of Diameters: 0.10mm Maximum
Surface Accuracy: 10 Waves Per Inch Maximum, Both Faces
Surface Quality: 60-40 Per Mil-PRF-13830, Both Faces
Material Type / Quality: Sapphire, Optical Grade
Crystallographic Orientation: c-Plane
Coating: Anti-Reflective Coated for < 1.0% Reflectance
From 1300nm to 1800nm With a Normal Incidence
Angle, Applied to the Major Diameter Face Only
Note: Coating Must Be Acid Resistant