Frequently Asked Questions

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

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

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

The coating used in Plano-Concave Lenses is MGF: Anti-reflection coating: MgF2, Ravg<1.75% per surface@400-700nm.

The order information for Plano-Concave Lenses includes item dimension, diameter, effective focal length, back focal length, center thickness, edge thickness, radius R1, and material. Other specifications can be customer-specified.

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