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Fused Silica Windows

Attribute                  Specification
Material                   Fused Silica
Typical Diameter (Φmm)    8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0,50.8
Typical Thickness (mm)     1.0, 2.0, 3.0, 4.0,6.35
Diameter Tolerance (mm)    +0.0/-0.2 (General), +0.0/-0.1 (High Precision)
Thickness Tolerance (mm)   ±0.2 (General), ±0.05 (High Precision)
Clear Aperture             >80% (Small Size), >90% (Large Size)
Parallelism                3 min. (General), 3 sec. (High Precision)
Surface Quality            60/40 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm)  λ/4(General), λ/10 (High Precision)
Bevel (face width x 45°)  <0.25mm
Coating                    Uncoated, AR, HR, PR Coating, etc.