Plano-Convex Lens, Duralens, 2.0 in., 5.0 in. FL, 7.9 mm Edge, Mitsubishi

The 62728-117 plano-convex focusing lens for CO2 lasers is 2.0 inch diameter with a 5.0 inch focal length. This ZnSe lens has a 7.9 mm edge thickness for OEM compatibility with Mitsubishi®.Zinc Selenide's low absorption coefficient makes it a perfect candidate for focusing applications using high power CO2 lasers. The DURALENS™ AR coating used for these CO₂ laser lenses is designed specifically for 10.6 micron wavelength. The high quality coating increases the amount of energy going through the lens and decrease the absoption to <0.20%. When cutting steel and other thick materials, a Plano-Convex lens provides a greater width of the cut enabling the laser's Oxygen assist to enter and ease the cutting process. In addition, Plano-Convex lenses give a greater depth of field needed to maintain a taperless edge when cutting thicker materials. This kind of lens is more popular in American and Japanese machinery.