Abstract: A laser machining device comprises a movable stage which is controlled by a stage controller. A laser produces a beam for machining and the beam is scanned over the part using a laser scanner under control of the laser scanner. The scanner controller controls the stage controller to synchronize movements of the stage with movements of the scanner. The stage may carry the part to be machined or the scanner.

Abstract: A galvanometer drive with a rotor that is rotatable about an axis of rotation and includes a magnet, and a stator unit that surrounds the rotor and includes a coil, the rotor being supported by two bearings, at least one of which is a floating bearing, such that the rotor can perform a rotational movement relative to the stator unit about the axis of rotation. A radial movement limiting device which is adapted to limit the radial movement of the floating bearing with respect to the stator unit.

Abstract: A scanning mirror for a laser scanning system includes a central axis, a mirror body, and a mirror surface on a front face of the mirror body. A first recess group is provided and includes a plurality of first recesses formed in the mirror body and arranged on a side of and spaced from the central axis as viewed from a back of the scanning mirror. A balancing mass is accommodated by the first recess group and includes at least one balancing body seated in at least one of the first recesses for balancing the scanning mirror. Each of the first recesses includes at least one radial stop against which the balancing body rests such that the balancing body is held in the first recess at a constant distance from the central axis. A method is also provided for balancing the scanning mirror.

Abstract: A galvanometer drive particularly useful for a deflection unit includes a rotor that is rotatable about a rotational axis, the rotor formed in at least one section by a permanent magnet. A stator surrounds the permanent magnet, the stator including a coil. The permanent magnet includes at least two magnetic layers and at least one electrically insulating intermediate layer arranged between the two magnetic layers. A method for manufacturing the rotor for the galvanometer is also provided.

Abstract: The invention relates to a laser material processing system comprising a collimation optic (K) having a total collimation focal length (fK), consisting of: a beam supply (Z) for divergent beams (D); a first and second optical device (Ll, L2) having a positive or negative focal length (fl, f2), wherein the divergent beams (D) first pass through the first optical device (Ll) and subsequently pass through the second optical device (L2), and leave the second optical device (L2) in a collimated state; a third optical device (0) arranged downstream of the collimation optic (K) and having a positive focal length (fO) that focuses the beams (P) leaving the collimation optic (K) in a collimated state to a focus (F); a first and second adjusting element (Al, A2) for independently moving the first or the second optical device (LI, L2) away from one another along a beam propagation direction (R), wherein a total beam path (gs) between the beam supply (Z) and an image-side focal plane (B) of the third optical device (0) i

Abstract: The invention refers to an apparatus for laser material processing having a beam deflecting unit (16) for deflecting the laser beam, a parallel-offsetting unit (14) including at least three reflecting mirrors (26, 28, 30), wherein one reflecting mirror (26) of the at least three reflecting mirrors for the parallel-offset of the laser beam is rotatable, and a focusing device (18) for focusing the laser beam on a workpiece (20) to be processed.

Abstract: The invention relates to a laser material processing system comprising a collimation optic (K) having a total collimation focal length (fK), consisting of: a beam supply (Z) for divergent beams (D); a first and second optical device (Ll, L2) having a positive or negative focal length (fl, f2), wherein the divergent beams (D) first pass through the first optical device (Ll) and subsequently pass through the second optical device (L2), and leave the second optical device (L2) in a collimated state; a third optical device (0) arranged downstream of the collimation optic (K) and having a positive focal length (fO) that focuses the beams (P) leaving the collimation optic (K) in a collimated state to a focus (F); a first and second adjusting element (Al, A2) for independently moving the first or the second optical device (LI, L2) away from one another along a beam propagation direction (R), wherein a total beam path (gs) between the beam supply (Z) and an image-side focal plane (B) of the third optical device (0) i

Abstract: A position detector for determining the rotation angle of an element which is rotatable around an axis of rotation (A) comprises a light source (3), a detector element (18, 19, 20, 21) arranged around the axis of rotation (A) for detecting light radiation emitted by the light source (3), a beam reshaping element (7, 207) arranged between the light source (3) and the detector element (18, 19, 20, 21) such that light from the light source (3) is directed towards the detector element (18, 19, 20, 21), and a light-blocking element (5) positioned between the beam reshaping element (7, 207) and the detector element (18, 19, 20, 21) such that it can rotate around the axis of rotation (A) together with the rotatable element whereby, depending on the rotation angle, the incidence of light on different partial regions of the detector element (18, 19, 20, 21) is prevented.

Abstract: The invention refers to an apparatus for laser material processing having a beam deflecting unit (16) for deflecting the laser beam, a parallel-offsetting unit (14) including at least three reflecting mirrors (26, 28, 30), wherein one reflecting mirror (26) of the at least three reflecting mirrors for the parallel-offset of the laser beam is rotatable, and a focusing device (18) for focusing the laser beam on a workpiece (20) to be processed.