A laser processing apparatus includes a chuck table configured to hold a workpiece, a laser beam irradiating unit having a condenser configured to condense and apply a laser beam to the workpiece held on the chuck table, a moving unit configured to move the chuck table and a condensing point of the laser beam relative to each other, a measuring unit configured to measure a beam profile of the laser beam; and a control unit configured to control each constituent element. The measuring unit is disposed adjacent to the chuck table so as to have a light receiving surface parallel with a holding surface of the chuck table.

An adjustment method of laser light path includes the steps of: having a laser light path to penetrate through a measuring device to obtain at least two laser focal positions of the laser light path, the at least two laser focal positions forming an arc path; applying a focal position-calculating device to calculate coordinate values of the at least two laser focal positions; based on the arc path and the coordinate values of the at least two laser focal positions to apply the focal position-calculating device to calculate a target laser focal position; and, based on the target laser focal position to apply a light modulator to adjust each of the at least two laser focal positions to the target laser focal position. In addition, an adjustment device of laser light path is also provided.

Additive manufacturing systems and related methods are disclosed. In some embodiments, an additive manufacturing system includes a build surface, one or more laser energy sources configured to emit laser energy, an optical phased array operatively coupled to the one or more laser energy sources, and a Risley prism assembly comprising a plurality of wedge prisms. The optical phased array includes one or more phase shifters operatively coupled to the one or more laser energy sources and configured to control a phase of the laser energy. The optical phased array is configured to direct the laser energy towards the Risley prism assembly, and the Risley prism assembly is configured to direct the laser energy towards the build surface.

A laser calibration device for calibrating an energy beam used in additive manufacturing, the laser calibration device including a body configured to be disposed in an additive manufacturing process chamber; a cover for the body, the cover comprising a plurality of holes; a photodiode; and a coating disposed on the body and configured to optically couple the photodiode with the plurality of holes, wherein the photodiode is configured to sense one or more parameters of the energy beam for determining calibrating instructions for the energy beam.

Sensor values captured by a sensor device are determined, one or more regions of a three-dimensional component having a deviation from an intended value are determined based at least in part on build coordinates for additively manufacturing the three-dimensional component corresponding to the sensor values, and a quality of the three-dimensional component is evaluated based at least in part on the one or more regions of the three-dimensional component having a deviation from the intended value. The sensor values correspond to an electromagnetic spectrum emitted by a melt pool formed by exposing a powder bed to a beam of radiation emitted from a laser apparatus, with the beam of radiation generating the melt pool in a melt region of the powder bed.

Additive manufacturing systems may include a laser melting apparatus, a sensor device, and a visualization apparatus. A laser melting apparatus may form a three-dimensional component by exposing a powder bed to a beam of radiation based on build coordinates, with the beam of radiation providing an energy influx that generates a melt pool in a melt region of the powder bed. A sensor device may capture sensor values corresponding to the melt pool and/or the melt region. A visualization apparatus may display a representation of the three-dimensional component, with the display including the build coordinates and the sensor values in respect of a capture location thereof in the three-dimensional component. The displayed representation may be based on a display output that includes sensor values correlated with build coordinates.

A method for sensing intensity of laser light in a simultaneous laser welding system includes placing a smart part in a weld area. The smart part includes at least a laser light intensity sensor for sensing laser light directed at it. Laser light intensity is sensed by the laser light intensity sensor of the smart part which provides an output signal indicative thereof to a controller.

Sensors comprising optical sensor fibers detect a laser light output from at least a laser delivery optical fiber to provide feedback of the laser light intensity detected by the optical sensor fiber. The optical sensor fibers may be integrated within a laser delivery bundle, or may be positioned between a delivery end of the laser delivery optical fiber and a plurality of work pieces to be welded. In various aspects, the feedback provided from the optical sensor fibers is used to control the laser light intensity or to alert an operator that the laser light intensity has fallen below a predetermined parameter.

A laser device includes at least one light source; a delivery fiber that is configured to propagate of laser light emitted from the light source; and a first light detection unit and a second light detection unit configured to detect a part of light propagating in a direction opposite to a propagation direction of the laser light through the delivery fiber. The first light detection unit detects first light included in a wavelength band of visible light. The second light detection unit detects second light included in a wavelength band of near-infrared light.

A laser control device includes a processor configured to control, when a control circuit of a laser device detects occurrence of an abnormality in a laser oscillator or a laser optical system and stops laser output from the laser oscillator, the control circuit based on a result of determining whether to enable or disable re-outputting of laser light from the laser oscillator by inputting, to a classifier, input data being at least a part of environmental data and state data about the laser device in a predetermined period including a stop time of laser output. Then, the state data and the input data in the predetermined period include at least one of time-series data about a light amount of laser light and time-series data about a light amount of return light propagating in a direction opposite to a direction of the laser light in the predetermined period.