Specifications

1 High Precision
2 Competitive Price
3 Quick Delivery
4 Custom Size Available
5 Good service

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