Square Windows
- Category： Square Windows
Material:BK7/H-K9L
Diameter Tolerance:+0.0/-0.1mm
Thickness Tolerance:±0.1mm
Surface Accuracy:λ/4@632.8 nm
Parallelism:±2″
Surface Quality:40-20
Clear Aperture:>90%
Bevelling:<0.2×45°
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