Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications Specifiction of our cylinderical lens as follow: * Material BK7 or other optical materials * Dimension Tolerance +0.0~-0.1mm * Center Thickness +/-0.1mm * Focal Length Tolerance+/-1% * Surface Quality:20/10 * Surface Figure /2 at 633nm on plano side * Clear Aperture >90% * Chamfer 0.25mm at 45 degree typical * Coating Optional.