CO2 laser cutting machine Focus Lens Features: Import antireflection coating fiber laser marking machine, through the high quality processing technology, stable performance Material:!! CO2 imports of zinc selenide (ZnSe) focusing lens specifications: effective focal length (EFL) Tolerance : ± 2% Dimensional tolerances Diameter: +0.000 "-0.005" thickness ± 0.010 "edge thickness variation (ETV) <= 0.002" Aperture :( polished) 90% Surface Accuracy :( diameter radial deviation / irregularity) @ 0.63μm plane side: a convex side stripes stripes /0.5: 20-10 surface quality changes with radius AR coating reflectivity / surface @ 10.6μm <= 0.20% Dimensions Diameter 20 (mm) model named Rules: FL-10.6-FDT-yy FL: 10.6 monolithic Focus Lens: laser wavelength 10.6um F: focal length, unit mm D: lens diameter in mm T: thickness, unit mm yy: Other Uses Name: Imported ZnSe Focus Lens Specifications: Φ20mm Focal Length: 50.8mm Edge thickness: 3mm laser lens wiping method: In general the laser output power, due to all the laser lens Metropolitan manufacturing process reasons or outside contamination and other factors cause the lens to a specific laser wavelength absorb large mobile phone sets fiber laser marking machine, over time so that the lens shortened life expectancy, due to the damage caused by the laser lens cases have occurred even affect the use of downtime. Lens of the laser wavelength absorption increase will cause uneven heating leads to reflection of the lens, the refractive index changes when the laser wavelength transmitted or reflected from a high absorption of the laser power distribution of the lens so that the lens center high temperature non-uniformity, edge temperature is low, This change produces a lens effect, said optically. Dongguan fiber laser marking machine price, fiber laser marking machine, laser provided by small family Dongguan Laser Equipment Co., a small family. Dongguan City, a small family Laser Equipment Co. (www.laser6000.com) strong, credible, in Dongguan, Guangdong and other welding equipment and equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead a small family of laser and you hand into the brilliant, for a better future!