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Fused silica Windows



AttributeCommercialHigh Precision
MaterialBK7 grade A Optical glass
Diameter ToleranceΦ2.0mm to Φ800mm
Thickness Tolerancethinest 0.5mm
Diameter Tolerance+0.0, -0.2mm+0.0, -0.1mm
Thickness Tolerance±0.1mm±0.01mm
Parallelism<1 arc minute

<10 arc seconds

Surface Quality40/20 scratch and dig10/5 scratch and dig
Surface Flatnessλ/2 @ 632.8nmλ/6 @ 632.8nm
Protective Bevel0.1-0.5mm × 45°0.05-0.2mm × 45°

Note: All sizes and coatings are available upon request.
TENSUN OPTICS Standard Size: D25.4*6.35mm, D50.8*9.525mm