BK7 Windows

Specifications
Material BK7 Grade A optical glass Dimension Tolerance +0.0/-0.2mm Thickness Tolerance ±0.2mm Clear Aperture >90% Parallelism Standard: 1 arc minute High Precision: 10 arc seconds Surface Quality Standard: 60/40 High Precision: 20/10 Wavefront Distortion Standard: λ@633nm per 25mm High Precision: λ/10@633nm per 25mm Chamfer Protected <0.5mmx45deg Coating Uncoated, available
Standard High PrecisioN Part No. ø(mm) T(mm) Part No. ø(mm) T(mm) WIN1010 10.0 3.0 WIN1110 10.0 6.0 WIN1012 12.7 3.0 WIN1112 12.7 6.0 WIN1015 15.0 3.0 WIN1115 15.0 6.0 WIN1020 20.0 3.0 WIN1120 20.0 6.0 WIN1025 25.4 3.0 WIN1125 25.4 6.35 WIN1030 30.0 3.0 WIN1130 30.0 6.35 WIN1050 50.8 6.35 WIN1150 50.8 10.0