A laser irradiation apparatus includes: a laser generation apparatus configured to generate first laser light for performing heat treatment of an object to be processed; a measurement-laser emission unit configured to emit linearly-polarized second laser light toward an irradiation area on the object to be processed to which the first laser light is applied; a first polarizing plate configured to let, of the whole reflected light of the second laser light reflected by the object to be processed, a part of the reflected light that has a first polarization direction pass therethrough; and a measurement-laser detection unit configured to detect the reflected light that has passed through the first polarizing plate.

A directed energy deposition nozzle assembly including (1) a nozzle configured to dispense material for directed energy deposition, wherein the material comprises one or more of metallic powder, ceramic powder, and glass powder, and wherein (a) the nozzle has an orifice through which the material exits the nozzle, wherein the nozzle comprises an inner body and an outer body that is peripherally disposed around the inner body, and wherein the orifice is defined by a gap between the inner body and the outer body, or (b) the nozzle comprises a plurality of orifices through which the material exits the nozzle, and (2) a vibrator configured to apply a vibration to the nozzle.

A laser processing machine including: a laser source that emits a laser beam; a polarization rotator unit; a beam rotator unit; a lens; and a controller, which apply the laser beam to a workpiece, the polarization rotator unit includes a wave plate and first actuator that rotates the wave plate, the beam rotator unit includes an optical system that adjusts an irradiation angle of the laser beam to the workpiece by making an incident laser beam eccentric to output and making the laser beam incident on the lens at a position eccentric from a central axis, a second actuator rotates the optical system, the lens condenses the laser beam on the workpiece, the controller controls a rotational speed ratio between the first actuator and the second actuator, and adjusts a polarized state of the laser beam by controlling the rotational speed ratio.

An additive manufacturing system may include a powder delivery device configured to direct a powder stream toward a build surface of a component, and a powder flow monitoring system. The powder delivery device defines a longitudinal axis oriented toward the build surface. The powder flow monitoring system includes an illumination device configured to illuminate at least some powder the powder stream between the powder delivery device and the build surface; and an imaging device configured to image the illuminated powder at an image plane that intersects the longitudinal axis. The illumination device and the imaging device may be registered to the powder delivery device in a plane substantially orthogonal to the longitudinal axis.

The present disclosure relates to a beam analysis device for determining a light beam state, e.g., determining the focal position of a light beam, where the device has a partial beam imaging device having at least one first selection device for forming a first partial beam from a first partial aperture region of the first measurement beam, and an imaging device for imaging the first partial beam for generating a first beam spot onto a detector unit having a spatially-resolving detector. The beam analysis device also can have an evaluation unit for processing the signals of the detector unit, for determining a lateral position (a.sub.1) of the first beam spot, and for determining changes in the lateral position (a.sub.1, a.sub.1′) of the first beam spot over time. An optical system for focal position control with a laser optics and with a beam analysis device. Additionally, the disclosure relates to a corresponding beam analysis method and methods for focal position control of a laser optics and for focal position tracking of a laser optics.

In some aspects, methods for measuring a level of usage of one or more replaceable consumable components within a material processing system can include detecting a type of consumable component in use within a processing device of the material processing system; determining, using a computing system, if the type of consumable component in use is a specific type of consumable component; and determining, using the computing system, a usage ratio of the specific type of consumable component used relative to other types of consumable components used within the processing device during a cumulative time period of use of the material processing system.

A connection structure of laminate cells is provided. Each of the laminate cells includes a pouch including a laminate film, an electrode assembly enclosed in the pouch, and a plate-shaped terminal connected internally of the pouch to the electrode assembly and extending out of the pouch along one side edge of the pouch. The plate-shaped terminal includes a bent tip. The pouches are stacked on each other, the bent tips of the plate-shaped terminals are overlapped with each other, and the bent tips are intermittently joined together in an overlapped portion where the bent tips are overlapped with each other.

A method is described for decontaminating room air by means of a tabletop apparatus (10) (or with dedicated stand) for the processing of metal costume jewelry/goldsmiths or dental prostheses through a LASER beam, wherein a source of UV and/or UV-C radiation irradiates a forced flow (F) of ambient air before it comes out of a casing of the apparatus.

A processing machine for processing a workpiece with a processing beam includes a nozzle changer and a protective enclosure. The nozzle change is for mounting nozzles on or demounting nozzles from a processing head of the processing machine. The nozzle changer has multiple nozzle holders for holding nozzles. The protective enclosure is configured to close off a working space for the processing of the workpiece with the processing beam from a working space surrounding area. The nozzle changer is movable between a nozzle changing position within the protective enclosure and a setup position outside the protective enclosure.

Described are a method and laser plotter for processing a job for cutting, engraving, marking and/or lettering a flat workpiece having at least one housing with a processing chamber formed for positioning a workpiece. The chamber has at least one irradiation source in the form of a laser and a control unit for controlling the sledge, which may be operated via a belt drive and has a focusing unit arranged movably thereon. Between the sledge and a processing surface of the processing chamber, an extraction bar is arranged for extracting the exhaust gases or vapors, respectively, produced by a laser beam during the processing of the workpiece. One or more extraction openings of the extraction bar are arranged or aligned, respectively, parallel to the processing surface for generating a horizontal extraction flow.