Diameter: 50.00mm +/- 0.05mm
Thickness: 0.0195″ +/- 0.0005″
Edge bevels: Visible to 0.15mm Maximum x 45 Degrees, Both Edges
Parallelism: 1.75 Arc Minutes Maximum
Transmitted Wave Front Error: Power: 1.0 Wave Maximum @ 633nm
Irregularity: 1.0 Wave Maximum @ 633nm
Power & Irregualrity Combined: 1.0 Wave Maximum
@ 633nm
Surface Quality: 60-30 per Mil-PRF-13830, Both Faces
Surface Roughness: 0.70nm Ra Maximum, Both Faces
Clear Apeture: Central 44.00 Minimum Diameter, Both Faces
Edge Chips: 0.30mm Maximum Size
Material Type / Quality: Sapphire Optical Grade
Maximum Size Inclusion Is 0.002 Inches.
The Permissible Number of Maximum Size Inclusions
Is One Per Cubic Centimeter of Sapphire.
The Sum of the Diameters of All Inclusions in Any Given Square Centimeter of Sapphire Shall Not Exceed 0.004 Inches.
Bubbles and Voids Are Classified as Inclusions.
Crystallographic Orientation: c-Plane