Co2 laser lens:
Material:CVD/PVD ZnSe
D18mm,F.L 50.8mm,E.T 2 mm
Surface quality:20-10
Application:laser cutting, engraving..

laser infrared lens specifications:

 

Focal Length Tolerance: ±1%Diameter Tolerance:+0.00/-0.01mmThickness Tolerance: ±0.1mmSurface Accuracy: λ/2 at 632.8nmSurface Quality: 20-10Cent ration :< 3'Clear Aperture : >90%Beveling :< 0.2×45°Coating: AR/AR 10.6um 

Parameter for laser lens

 

BL18.0-2.0-2.0	18.0	50.8	2.0	CVD/PVD  ZnSe
BL18.0-2.5-2.0	18.0	63.5	2.0	CVD/PVD  ZnSe
BL18.0-3.0-2.0	18.0	76.2	2.0	CVD/PVD  ZnSe
BL18.0-4.0-2.0	18.0	101.6	2.0	CVD/PVD  ZnSe
BL19.05-1.5-2.0	19.05	38.1	2.0	CVD/PVD  ZnSe
BL19.05-2.0-2.0	19.05	50.8	2.0	CVD/PVD  ZnSe
BL19.05-2.5-2.0	19.05	63.5	2.0	CVD/PVD  ZnSe

 

 

The following are wooden cases for packing  laser lens pictures