Ống Kính Máy Cắt Laser Cvd Znse Co2 Đường Kính 25mm D20X3 mm Chiwanji1

Description: Lens dia. 20mm, 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: = 90% Diameter Package Includes: 1 Piece Focal Len