VIS AR Coated Optical BK7 Plano Concave Lens 

Plano concave lens has one inward curved surface and a flat surface.  Specifications: Material : Optical glass N-BK7 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 Realpoo Optics is a professional manufacturer of optical glass lenses, such as achromatic lens, cylindrical lens, fresnel lens, diffraction grating etc. The optics can be offered with coating or without coating. Welcome to send your inquiry.