Frequently Asked Questions

A Plano-Concave Lens is made up of a plane and a concave spherical surface with 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 the lenses is 40/20 (Diameter ≤25.4mm) and 60/40 (Diameter >25.4mm).

The lenses have different anti-reflection coatings depending on the wavelength range, such as MGF, A, B, C, AB, and V. Other coatings can be customer specified.

The available dimensions and specifications for the lenses are listed in the Order Information table, and other specifications can be customer specified.

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