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Laser Beam Controls

In Cartesian control, laser beam is fixed and the object moves in XY coordinates. In hybrid control, the material moves in Y direction and laser beam in X direction (flying optic system). In Galvanometer control, a pair of live mirrors is placed before focusing lens. These mirrors are attached to small, yet quick analog or digital electric motors (galvos). By altering the angle of the mirrors using galvos, the beam is guided within a limited area, through an F-theta lens onto the material. An advantage of Galvanometer control is high speed. By attaching a third mirror, curved or highly stepped objects can be marked to achieve 3D ability. 

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