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 for H-K9L Plano-Concave Lenses is H-K9L.

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

The coating used for H-K9L Plano-Concave Lenses is MGF: Anti-reflection coating: MgF2, Ravg<1.75% per surface@400-700nm, Anti-reflection coating: Ravg<0.5% per surface@370-675nm, B: Anti-reflection coating: Ravg<0.5% per surface@650-1050nm, C: Anti-reflection coating: Ravg<0.5% per surface@1050-1620nm, AB: Anti-reflection coating: Ravg<1.25% per surface@400-1000nm, V: Anti-reflection coating: R<0.25% per surface (532nm, 808nm, 1064nm, etc.).

The dimensions available for Plano-Concave Lenses are listed in the Order Information table. Other specifications can be customer specified.

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