CO2 laser focus lens TM-20F Diameter: 20mm Surface Accuracy: Lambda/2 at 63.5nm Surface Quality: 60-40 Cent ration :< 3'

CO2 laser focus lens TM-20FDiameter: 20mmSurface Accuracy: Lambda/2 at 63.5nm Surface Quality: 60-40 Cent ration :< 3'

used for CO2 laser machine engraving and cutting.

high durable CO2 laser focus lens with diameter 20mm