F-theta Lens

About

The ability to switch to a larger or smaller marking field isn't a pricey add-on. From F63 to F420, giving you more options to achieve perfect engraving results on your materials. When choosing F-theta lenses, the following factors are often considered: 1. The wavelength of F-theta lenses match machines: 10.6μm —— CO2; 1064nm——fiber; 355nm——UV 2. Working Area Consider the size of the workpiece and choose the appropriate working area; The larger working area, the larger focal length of F-theta lenses, the larger focusing spot, and the wider marking line. 3. Focal length The shorter focal length, the smaller focal depth, the deeper marking depth, and the higher requirements for flatness of workpiece; With the larger focal length, the larger focal depth , and the shallower marking depth, you need to choose a high-power machine. 4. Entrance Beam The entrance beam diameter of common machines is 12mm. Under the same focal length, a smaller entrance beam will have a better engraving effect 5. Thread Choose the suitable thread for machine installation, the common mounting thread is M85, M55, and M35.