3D Dynamic Focusing Lens Assembly
The 3D dynamic focusing system is a core technology of laser precision machining. By dynamically adjusting the position of the laser focus in three-dimensional space, it realizes high-precision machining of large-format and irregular curved surfaces. The dynamic focusing scan head is specially designed for laser scanning with a small spot, large working range and high flexibility. During scanning, the diverging lens in the device is driven by a motor relative to the focusing lens to achieve dynamic and precise positioning on the optical axis. This process changes the total focal length of the system and works synchronously with the scanning deflection mirror, so 2D scanning can be extended into a 3D scanning system. The device can replace the expensive flat-field objective in 2D scanning applications, and can also realize a 3D beam deflection scanning system. It is suitable for CO2, YAG and fiber lasers. It has been maturely applied in multiple industries, with the most notable feature being speed, which improves the efficiency of processing enterprises. The 3D dynamic focusing system consists of three major modules: optics, mechanics, and control, and its core optical components are particularly important. The optical components include the following lenses and mirrors. Dynamic focusing lens assembly: includes a movable lens and a DOE corresponding parabolic mirror, responsible for dynamic focal length adjustment. Scanning galvanometer: the XY-axis galvanometer controls the deflection of the laser plane and cooperates with Z-axis focusing to achieve 3D positioning.
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