During the scanning process, the divergent lens in the device is dynamically positioned precisely on the optical axis relative to the focusing lens through motor drive. This step changes the total focal length of the system and works synchronously with the scanning deflecting mirror data, thus extending the two-dimensional scanning to the three-dimensional scanning system. This device can replace expensive flat mirrors in two-dimensional scanning applications and complete three-dimensional beam deflection scanning systems.
The scanning speed of high-speed scanning galvanometer is usually above 3000 mm/s, but a better high speed galvo scanner can scan tens of thousands of times per second. Furthermore, when using ordinary lenses to produce small graphics or fonts, deformation is easily to occur, and the scanning speed must be reduced to ensure the effect.
The larger the focal length of the field lens, the larger the focused spot is. Under the same overlap rate of the spot, the distance of the filling lines can be increased to improve the marking efficiency. The larger the field lens of the scanning galvanometer, the lower the power density, so the distance between the filling lines needs to be increased to ensure sufficient energy for the marking.
Due to different filling types being affected by different delays, reducing delays unrelated to filling types can also improve marking efficiency. Bow-shaped and loop-shaped fillings are mainly affected by corner delays and can reduce delay of light on, delay of light off and delay of end. Bidirectional and unidirectional fillings are mainly affected by the delay of the light on and off and can reduce the delay of the corner and end. However, it should be noted that the influence of delay on large graphics and fonts is small and the delay can be appropriately reduced. Because small details of graphics and fonts are greatly affected by delay, the delay can be appropriately increased.
Checking "uniformly distributed filling lines". For marking bold graphics and fonts, "able to outline" and "not able to walk on the edge" can be removed. When marking by the galvano scanner, dividing filling for a large range of graphics can effectively reduce jump time and improve the efficiency of scanning galvanometer marking.
Laser scanning galvanometer welding is a highly efficient and precise welding method that transmits high-efficiency energy laser beams through galvanometer scanning manipulation methods. That is, the laser radiation source heats the surface of the product workpiece, and according to adjusting the main parameters such as the total width of the single laser pulse, the output power of the maximum value, and the repetition frequency of the laser, the surface heat energy of the laser energy is changed to diffuse inward and outward according to thermal conduction, thereby melting the workpiece to produce a special molten pool. Due to its unique advantages, it has been successfully applied to precision welding of micro and small parts.