N-BK7 bi-concave lenses are low cost and work well in visible and NIR application. They are used in machine vision, microscopy and industrial applications. We have AR coatings for N-BK7 bi-concave lenses, such as MgF2, VIS AR coating and VIS-NIR coatings.

Production capabilities:
Lens shape: Concave-concave
Substrate: N-BK7, H-ZF1, H-ZF13, UV grade fused silica
Diameter available: 3mm to 700mm
Tolerance: +/-0.01mm
Thickness tolerance: +/-0.02mm
Surface quality: 20-10
Centering: 3 arc min
Bevel: protective bevel
Coating: Single layer anti-reflection coating or broadband multi-layer AR coating.
RoHS certified

Trade terms: FOB Nanjing

Payment: T/T