High quality Optical lens(biconcave lens) nikon lens af 55-300mm vr smartphone camera lens

Usage: Photoelectric switch/control monitor/auto car/ projector/medical  instruments,etc.
Shape: plano-convex/ biconvex/ concave-convex/ biconcave/ glue mirror lens
Material: BK7,BK9 optical grade glass
Diameter：φ3mm +0.00/-0.05mm Min
Thickness: 1.0mm +0.05/-0.05mmm Min
Surface Finish: 60/40
Other specifications can be customized