VIS AR Coated Optical BK7 Plano Concave Lens

Plano concave lens has one inward curved surface and a flat surface. 

Specifications:

Material : Optical glass
Diameter : 1mm ~ 300mm
Focal Legnth Tolerance :+/-1%
Diameter Tolerance :+0.0/-0.1mm
Thickness Tolerance :+/-0.1mm
Surface Quality :40/20
Centration :<3 arc minutes
Clear Aperture :>90%
Bevel : Protective bevel as needed
Coating :Upon your request