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