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: 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 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: Position detector for determining the rotation angle position of a rotatably supported object, comprising a light source for producing a light beam, a diffraction grating, a mirror which is connected with the object in a co-rotating manner in such a way that the light beam is reflected therefrom onto the diffraction grating and passes over the diffraction grating during a rotation of the mirror, thereby producing diffraction light, an interference device which is configured such as to be able to bring different diffraction orders of the diffraction light to interference, thereby producing an interference pattern, a light detector by means of which a brightness course, caused by the passing over of the diffraction grating with the reflected light beam, of the interference pattern can be detected, and an evaluation unit by which the rotation angle position of the object can be determined based on the brightness course.

Abstract: Position detector for determining the rotation angle position of a rotatably supported object, comprising a light source for producing a light beam, a diffraction grating, a mirror which is connected with the object in a co-rotating manner in such a way that the light beam is reflected therefrom onto the diffraction grating and passes over the diffraction grating during a rotation of the mirror, thereby producing diffraction light, an interference device which is configured such as to be able to bring different diffraction orders of the diffraction light to interference, thereby producing an interference pattern, a light detector by means of which a brightness course, caused by the passing over of the diffraction grating with the reflected light beam, of the interference pattern can be detected, and an evaluation unit by which the rotation angle position of the object can be determined based on the brightness course.