20mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus Optionable
Q-BAIHE
20mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus 1.5\"" 2\"" 2.5\"" 3\"" 4\"" 5\"" Optionable\n\n \nSpecification: \nZnSe material is a polycrystalline material transparent yellow crystalline particle size of about 70\u03BCm, tr...ansparency range 0.5-15\u03BCm. \nBy the chemical vapor deposition (CVD) method for the synthesis of non-existent impurities absorption, scattering loss is very low. \nBecause of 10.6\u03BCm wavelength of light absorption is very small , thus becoming the selected material in production of high -power CO2 laser optics system.\nIt is commonly used in various optical system.\nZnSe material has highly thermal-shock ressistant, making it the best optical material in high-power CO2 laser system .\nIts hardness grade is just 2/3 of the ZnS multispectral, the material is relatively soft and easy to produce scratches, also has great refractive rate, so it is necessary plating on the surface with high hardness antireflection coating to prot:
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