Frequently Asked Questions

A Plano-Concave Lens is made up of a plane and a concave spherical surface and has a negative focal length, making its application range very wide.

The material used for H-K9L Plano-Concave Lenses is H-K9L.

The diameter tolerance for H-K9L Plano-Concave Lenses is 0.0/-0.1mm.

The surface quality of H-K9L Plano-Concave Lenses is 40/20 (Diameter≤25.4mm), 60/40 (Diameter>25.4mm).

Yes, customers can specify other coatings for the Plano-Concave Lenses.

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