Optical Crystal Bk7 Spherical Glass Lens Specifications
Plano Concave Lenses
Material---fused silica , BK7
FL tolerance--±0.5%
Dimension tolerance--±0.05mm
Thickness tolerance---±0.05mm
Edge Thk.Variable(ETV)---≤0.02mm
Clear Aperture--≥95%
S/D---80/50~20/10
Flatness---lambda/4@632.8nm
Centrality---≤3′
Dimension---φ3.00~50.80mm(convex,concave,prism)
Manufacturer of Optical Crystal Bk7 Spherical Glass Lens