ZnSe Lenses

The ZnSe lenses for laser cutting and marking are made of high-quality material with the lowest absorption values. Combined with an anti-reflex coating, PLEIGER optics allow the focusing of a high-power CO2 laser with excellent precision. For the highest laser outputs above 4 kW, we offer a low-absorbing AR/AR coating, which minimizes the “thermal lensing”.

Lenses for laser cutting:

_Spare parts for most laser machines
_Standard AR (A < 0.20 %)
_Low-Absorption AR (A < 0.15 %)
Reference Guide | Download

Material:

_Transmission range 0,5 – 22 µm
_Refractive index @ 10,6 µm 2,4028
_Refractive index inhomogeneity @ 10,6 µm 3 x 10-6
_Thermo-optic coefficient @ 10,6 µm 611 x 10-6 K-1
_Absorption coefficient @ 10,6 µm 5,0 x 10-4 cm-1
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