CVD ZnSe Focus Lens CO2 Engraver Cutting Machine Dia. 12mm FLFL50.8mm

Description: Len dia 19mm, Focus length 63.5mm, 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. Meniscus type lens, better foucs and meticulous path of light. Can withstand high power density, firm film, resistant to wipe. Used for processing, fits for engraving machine, marking machine, cutting machine, etc. Specification: Material: Znse Coating: 10.6um?AR Both Side? Diameter tolerance: +0/-0.13mm Centre Thickness Tolerance: ±0.25mm Focal Length Tolerance: < ±2% Clear Aperture: >= 90% Diameter Scratch/Dig: 40-20 Package Includes: 1 Piece Focal Len (Packed in boxes with foamed cotton)