Hi,Welcome to our website!
Lens PRODUCTS >> Lens
Plano-Concave Lens
Plano-concave, a collimated light beam passing through the lens is spread, then we called it as a negative or diverging lens. The beam after passing through the lens, appears to emanate from a particular point on the axis in front of the lens. The distance from this point to the lens is the focal length. The reason we called negative based on the comparison between the plano-convex positive lens. PHYO OPTICS supply plano-concave lens in material of N-BK7,Fused Silica,CaF2,SF11,H-BaK4,H-BaK7,etc, also coating as requested.

SpecificationCommercialHigh Precision
MaterialAs Required Schott,CDGM.etc.As required Schott, CDGM,etc.
Diameter Tolerance+0.00/-0.20mm+0.00/-0.05mm
Focual Length ToleranceTypical +/-5%@633nmTypical +/-2% @633nm
CentrationTypical <3arcminTypical <3arcmin
Surface Flatness@632.8nmL/4L/8
Surface Quality80-5040-20
CoatingAs required, with paint, Protection coating, high precision
 * Glued lens like Archromatic, triplet are still available
Copyright © 2016-2019 phyoptics.com All Rights Reserved.