Plano Concave Lenses

A plano concave lens has a plane and a concave surface, with a negative focal length, and it can diverge light beams. It is often used for beam expansion, projection, and enlarging the focal length of optical systems.

Material: CaF2, MgF2, quartz, K9, etc.

Design wavelength：587.6nm

Central Thickness Tolerance: ± 0.1mm

Dimensional Tolerance: ± 0.1mm

Focal Length Tolerance: ± 1%

Surface Quality: 60/40

Surface Accuracy: λ/10~2λ