Cloudray Laser Mirror Si Reflective Lens CO2 Laser Lens Si Gold Plated Mirror 20mm Co2 Laser Mirror for CO2 Laser Engraving Cutting Machine, Dia 20mm 3PCS

Product description <img alt="CO2 Laser Mirrors Si Material for CO2 Laser Engraver Cutter" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/29c357d3-0090-4a0c-91bf-e982531bab4b.__CR0,0,970,600_PT0_SX970_V1___.jpg"/> Technical Parameter Material Gold-coated Silicon Mirror Wavelength 10.6um Diameter 19.05/20/25/30/38.1mm(Optional) Thickness 2/3/5mm Power 30-300W (Max) Diameter Tolerance +0/-0.13 mm Thickness Tolerance ±0.25 mm FL Tolerance < ±2% Centration < 3 arc minutes Clear Aperture > 90% Surface Figure < λ/2 per 1 inch diameter Surface Quality 40-20 scratch and dig AR/AR coating R < 0.5% per surface <img alt="CO2 Laser Mirrors Si Material for CO2 Laser Engraver Cutter" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/8a2fbdbf-c88c-4861-b288-a43deda1c8cc.__CR0,0,970,600_PT0_SX970_V1___.jpg"/> Cloudray Test Process <img alt="mirror" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/5f325a0c-6bb4-403b-b367-98f49e321d8a.__CR0,0,220,220_PT0_SX220_V1___.jpg"> Surface Quality Test <img alt="mo morror" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/a4620cb1-3b21-49c5-8f16-de70ce300520.__CR0,0,220,220_PT0_SX220_V1___.jpg"> Surface Roughness Measurement <img alt="mo morror" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/bb9216ad-2441-4094-9015-ac3263788464.__CR0,0,220,220_PT0_SX220_V1___.jpg"> Optical Profiling <img alt="mo morror" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/0b5d02ed-4910-44ad-9c74-5f0842116606.__CR0,0,220,220_PT0_SX220_V1___.jpg"> Centering Tolerance Test Cleaning instructions <img alt="CO2 Laser Mirrors mo Material for CO2 Laser Engraver Cutter" src="https://m.media-amazon.com/images/S