System and method for laser processing transparent material through passive zoom

Abstract

The invention discloses a system and a method for laser processing a transparent material through passive zoom. The system comprises a laser source, a laser source support stand column, a galvanometerscanning head, a scanning lens, an upper computer, a motor, an electronic control lifting platform, a platform bottom plate, a motion control card and a galvanometer control card. The method comprises the following steps: (1) the upper computer controls the electronic control lifting platform to run; (2) the upper computer controls an X / Y axis of the galvanometer scanning head to move; (3) a laser beam emitted by the laser source swings through the X / Y direction of the galvanometer scanning head; and (4) the laser beam is focused on the transparent material through the scanning lens so as toprocess the material. The system provided by the invention is simple in light path structure and less in optical element, so that the cost is greatly reduced; and according to the method, a focus point of the laser beam is passively zoomed, and the transparent material is processed layer by layer from bottom to top, so that the processing efficiency and a processing effect are improved, and the thickness range of the material to be process is enlarged.

Description

technical field [0001] The invention relates to a laser processing system and method, in particular to a passive zoom laser processing system and method for transparent materials such as glass, quartz and sapphire. Background technique [0002] When using lasers to process transparent materials such as glass, quartz, and sapphire, the existing methods usually use automatic zooming to achieve laser three-dimensional cutting and drilling, which mainly includes the following steps: (1) The laser emits a laser beam, and the laser beam enters the laser cutting head , after being reflected by the first variable curvature reflector and the second variable curvature reflector, it is then focused on the workpiece surface through the lens group; (2) adjust the air pressure of the cylinder in the first variable curvature reflector and the second variable curvature reflector , so that the deformation curvature of the two mirrors is changed, and then the automatic adjustment of the focal...

AI Technical Summary

Problems solved by technology

[0003] However, the existing laser processing method using automatic zoom has the problems of complex optical path, many optical devices, high probability of device damage, easily limited processing thickness, and high cost in its technical device system.

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