{"product_id":"laser-component-20mm-lens-2-inch-50-80mm","title":"CO2 Laser Lens 50.80mm (2 inch) Focal Length","description":"The lens is the final component that the laser beam will pass until it hits the surface of the workpiece. This lens has a focal length of 50.80mm or 2 inches. The diameter of the lens is 20mm. Make sure to get\/make the correct nozzle that has a 20mm seat for the lens.    The material of the lens is CVD ZnSe (Chemical Vapor Deposited Zinc Selenide) which has a low absorption rate and high transmittance level.      Specifications:  Design Wavelength: 10.6 um  Focal Length Tolerance: ±1%  Diameter Tolerance: +0.0 \/ -0.12 mm  Thickness Tolerance: ±0.2 mm  Surface Accuracy: \/2 per 1\" Dia@632.8nm  Surface Quality: 20-10 scratch and dig  Centration: \u0026lt;3' arc minutes  Clear aperture: \u0026gt;90%  Beveling: \u0026lt;0.2 x 45°  AR\/AR Coating: R\u0026lt;0.5% per surface @10.6um","brand":"BuildYourCNC","offers":[{"title":"CO2 Laser 50.80mm (2 inch) Focal Length Lens 20mm Diameter","offer_id":45875870040238,"sku":"592","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/76_20mmCO2Lens-300.jpg?v=1730084725","url":"https:\/\/buildyuurcnc.com\/products\/laser-component-20mm-lens-2-inch-50-80mm","provider":"BuildYourCNC","version":"1.0","type":"link"}