Abstract: A method for cleaning a molding insert for injection-molding of single-use ophthalmic lens molds comprises the steps of providing an insert holder and a molding surface of the molding insert faces away from the insert holder. A dry ice nozzle comprises an inlet for the supply of dry ice, a nozzle channel comprising a longitudinally extending diverging inner wall portion terminating in an outlet opening of the nozzle channel, and a nozzle housing with a circumferentially running distal end wall. The nozzle housing further comprises a housing wall portion extending away from the distal end wall to define an exhaust channel. The method further comprises positioning the dry ice nozzle on the insert holder, supplying dry ice particles to the nozzle inlet to generate a jet of dry ice particles impinging on the molding surface of the molding insert, and removing exhaust gases.

Abstract: An electromechanical brake for braking a motor vehicle. The electromechanical brake includes an electric motor having a shaft via which a brake piston can be axially moved for braking. A disk is arranged on the shaft and has a plurality of recesses arranged in the circumferential direction. In addition, the electromechanical brake includes a magnetic actuator which axially moves a pin so that one end of the pin interacts with the recesses of the disk and blocks a movement of the shaft in a brake release direction, whereby the pin can be held in a bistable manner. The magnetic actuator and a control unit, for controlling the electric motor and the magnetic actuator, are arranged in the axial direction relative to the electric motor, and the pin is movable parallel to the shaft.

Abstract: A device for processing a workpiece using a laser beam of a laser includes a retarder plate and a focusing device. The retarder plate is configured to apply a first location-dependent phase retardation to a first part of the laser beam having a first input polarization, and to apply a second location-dependent phase retardation to a second part of the laser beam having a second input polarization. The focusing device is configured to focus the laser beam in at least one focus zone. A beam form of the laser beam in the focus zone is determined by the first location-dependent phase retardation and the second location-dependent phase retardation. The at least one focus zone at least partially overlaps with the workpiece. The workpiece is subjected to laser radiation in the at least one focus zone and is thus processed.

Abstract: An apparatus for laser machining a workpiece includes a first beam shaping device comprising a beam splitting element for splitting a first input beam into a plurality of component beams, and a focusing optical unit configured to image the component beams into at least one focal zone. The first input beam is split by the beam splitting element by phase imposition on the first input beam. The component beams are focused into different partial regions of the at least one focal zone for forming the at least one focal zone. The at least one focal zone is introduced into the material at a work angle with respect to an outer side of the workpiece for the laser machining of the workpiece. Material modifications associated with a change of a refractive index of the material are produced in the material by exposing the material to the at least one focal zone.

Abstract: A method for separating a workpiece having a transparent material includes providing ultrashort laser pulses using an ultrashort pulse laser, introducing material modifications into the transparent material of the workpiece along a separation line using the laser pulses, and separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. The material modifications are Type I and/or Type II modifications associated with a change in a refractive index of the material of the workpiece. The material modifications penetrate two sides of the workpiece that are located in intersecting planes. Separating the material of the workpiece produces a chamfer and/or a bevel. A length of a hypotenuse of the chamfer and/or bevel is between 50 ?m and 500 ?m.

Abstract: A method for joining an optical crystal to a substrate includes radiating a pulsed laser beam through the optical crystal or through the substrate onto a surface of an intermediate layer between the optical crystal and the substrate, and forming a fusion zone in the intermediate layer between the optical crystal and the substrate by the radiation of the pulsed laser beam, thereby integrally joining the optical crystal and the substrate.

Abstract: A method for joining two joining partners includes applying a coating to at least one of the two joining partners so as to be arranged between the two joining partners before joining and joining the at least two joining partners to one another using ultrashort laser pulses of a laser beam of an ultrashort pulse laser. At least one joining partner is substantially transparent to the ultrashort laser pulses of the ultrashort pulse laser, and the coating comprises physical properties similar to at least one joining partner and/or a chemical constituent similar to at least one joining partner.

Abstract: A method for hardening a transparent material includes the steps of introducing a material modification to the transparent material using a laser beam of ultrashort laser pulses of an ultrashort pulse laser so as to harden at least a portion of the transparent material.

Abstract: A method for producing a light deflection structure includes the steps of: a) producing a first plurality of interaction regions, in which at least one laser beam interacts with the substrate material along a first path with a spatial overlap of the interaction regions, b) producing a second plurality of interaction regions with a spatial overlap of the interaction regions along a second path offset with respect and with a spatial overlap with the first path, c) optionally producing a further plurality of interaction regions with a spatial overlap of the further interaction regions along a further path offset with respect to and with a spatial overlap with the path used immediately before, and d) optionally carrying out step c) multiple times. The method also includes producing type II modifications of the substrate material, and changing at least one process parameter from one beam path to another beam path.

Abstract: A method is for processing at least one workpiece. The method includes applying a pulsed laser beam to a process zone of the at least one workpiece. The energy coupled into the process zone by the laser beam is temporally modulated.

Abstract: The present disclosure provides methods, devices, and systems for the butt welding of two, e.g., planar, workpieces, by at least one pulsed laser beam, e.g. an ultrashort pulse (“USP”) laser beam, which is focused into the workpiece material to locally melt the two workpieces in the region of their joining surface. The laser focus of the laser beam focused into the workpiece material is moved transversely with respect to the beam direction of the laser beam to produce in the region of the joining surface a weld seam extending transversely with respect to the beam direction of the laser beam.

Abstract: Methods and devices for laser welding of mutually overlapping workpieces by pulsed laser beams, for example, Ultrashort-pulsed (USP) laser beams, are provided. In one aspect, a method includes directing a pulsed laser beam through one workpiece onto the other workpiece and moving the pulsed laser beam in a feed direction relative to the two workpieces to produce a weld seam between the two workpieces bearing against one another. A deflection back and forth of the pulsed laser beam directed transversely or parallel to the feed direction is superposed on the pulsed laser beam moved in the feed direction.