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Material UV Fused silica Diameter (mm) include tol /- 40 0.2/-0.0 Thickness (mm) include tol /- 2 /-0.1 Edge finish (Ground or cut?) Ground Chamfer (i.e 0.3x0.3@45擄) Or landwidth size 0.2x0.2 @45擄 Flatness side 1 (Lambda@ 280nm) <2 lambda Flatness side 2 (Lambda@ 280nm) <2 lambda Clear aperture (% or dia mm) 90% CA Wedge angle (or parallelism) <5 arc minutes Operating wavelength ?? Scratch/Dig <60-40 Coating description (side 1) Uncoated Coating description (side 2) Uncoated

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