Double Convex Lenses

biconvex lens

Double convex lenses(also called bi-convex lenses) are spherical optical glass lenses used in image relay applications or for imaging objects. Double convex lenses have positive focal length, along with two convex surfaces with the same radius of curvature.

Glass material: N-BK7,Fused Silica,CaF2,ZnSe and etc
Effective Focal Length Tolerance: ± 1%
Surface Quality:60-40/40-20 (scratch-dig)
Diameter Tolerance: +0.0, -0.2mm
Clear Aperture:> 90% of Diameter
Centering Tolerance: ≤3 arc min
Coating:Uncoated / Single layer MgF2 /Broadband AR

N-BK7 Double Convex Spherical Glass Lenses (Uncoated)
Item numberDiameter(mm)Focal length(mm)Radius of curvature(mm)Centre thickness(mm)Edge thickness(mm)
BCX16.012.09.92.31.5
BCX29.02020.12.81.8
BCX3122525.23.41.8
BCX425.425.424.59.01.9
BCX550.86059.314.43.0
N-BK7 Double Convex Lenses (with 350 - 700 nm AR Coating)
Item numberDiameter(mm)Focal length(mm)Radius of curvature(mm)Centre thickness(mm)Edge thickness(mm)
BCX16.012.012.02.31.5
BCX29.020.020.12.81.8
BCX312.75051.12.61.8
BCX425.425.424.59.01.9
BCX550.860.059.314.43.0