• Optimized optical configuration and smooth and efficient airflow design.• Auto focus ranges +10~-14mm, accuracy is 0.05mm.• Can be equipped with the D30 lens group, the maximum fiber input power is 6.5KW.• Maximum acceleration of focus lens drive 10m/s2, maximum speed 10m/min.• Adds an upper protective lens to the collimator, minimizing the risk of contamination of the collimator.• Drawer-type of lens mount, quick and easy access to the cover glass.• With a variety of optical interfaces, can be adapted with a variety of fiber lasers. • Collimation and focusing lenses are both water cooled. Increase air flow cooling for nozzle , effectively protect the nozzle and ceramic body and the lifetime; • 35mm clear aperture, effectively reducing stray light interference, guarantee cutting quality and service life; • 5.6KG,compact structure, reduce the mechanical requirement;