New ZnSe Focal Lens for CO2 Cutting Engraver Machine Diam 19mm/20mm FL 38.1-101.6mm Dia20mm FL38.1mm1.5inch

Description: Len dia 20mm Focus length 38.1mm/1.5 anti-reflective coated focal lens for 40-100W . Focus lens is the fitting of CO2 machine which is used to focus the beam after reflection to realize engraving or cutting. This type is improved and update after collecting feedback from final users. Meniscus type lens better foucs and meticulous path of light. Can withstand high power density firm film less spot resistant to wipe and scratch. Used for processing engraving machine marking machine cutting machine etc.. Specification: Material: Znse Size: 69x69x18.6mm / 2.7x2.7x0.7inch Coating: 10.6um(AR Both Side) Diameter tolerance: +0/-0.13mm Centre Thickness Tolerance: ±0.25mm Focal Length Tolerance: = 90% Diameter Scratch/: Surface Accuracy: 入/2per1 Dia Package Includes: 1 Piece Focal Len (Packed in boxes with foamed cotton)