The present invention belongs to the technical field of high-efficiency, high-precision and high-performance laser bending of metal sheets, and relates to a line-shape spot laser bending method for metal sheets. The present invention uses a multimode laser scanning mirror or a single piezoelectric deformable mirror to convert laser Gaussian distributed point spots to uniformly distributed line-shape spot, and meanwhile, loads the spots in a bending line area and bends metal sheets so that the temperature field in the bending line of the metal sheet is distributed uniformly to achieve the purposes of reducing warpage deformation, enhancing bending angle consistency and increasing the bending efficiency.

A laser beam irradiation apparatus including a laser source configured to emit light; a collimator configured to collimate the emitted light; a scanner configured to adjust the collimated light to change an irradiation direction thereof; a first lens part configured to focus the adjusted light to irradiate a laser beam on a sealing part; a camera configured to receive visible light passing through the scanner; a heat sensing part configured to receive infrared (IR) light passing through the scanner; and a control part configured to control a moving direction and an intensity of the laser beam.

A laser beam irradiation apparatus including a laser source configured to emit light; a collimator configured to collimate the emitted light; a scanner configured to adjust the collimated light to change an irradiation direction thereof; a first lens part configured to focus the adjusted light to irradiate a laser beam on a sealing part; a camera configured to receive visible light passing through the scanner; a heat sensing part configured to receive infrared (IR) light passing through the scanner; and a control part configured to control a moving direction and an intensity of the laser beam.

An article includes a substrate and a structure of additive manufacturing material of predetermined thickness attached to the substrate, the structure of additive manufacturing material formed by providing a metal alloy powder, forming an initial layer having a preselected thickness and a preselected shape including at least one aperture, with the metal alloy powder, sequentially forming an additional layer with the metal alloy powder over the initial layer, each of additional layers having an additional preselected thickness and an additional preselected shape including an aperture corresponding to the aperture in the initial layer, and joining each of the additional layers to the initial layer or any previously joined additional layers, forming a structure having a predetermined thickness and shape, and an aperture having a predetermined profile. The article includes a passageway through the structure including the aperture and a corresponding metering hole.

An article includes a substrate and a structure of additive manufacturing material of predetermined thickness attached to the substrate, the structure of additive manufacturing material formed by providing a metal alloy powder, forming an initial layer having a preselected thickness and a preselected shape including at least one aperture, with the metal alloy powder, sequentially forming an additional layer with the metal alloy powder over the initial layer, each of additional layers having an additional preselected thickness and an additional preselected shape including an aperture corresponding to the aperture in the initial layer, and joining each of the additional layers to the initial layer or any previously joined additional layers, forming a structure having a predetermined thickness and shape, and an aperture having a predetermined profile. The article includes a passageway through the structure including the aperture and a corresponding metering hole.

Methods and apparatus for extending the lifetime of optical components are disclosed. A beam of laser energy directed along a beam path that intersects a scan lens, through which it can be transmitted. The beam path can be deflected within a scan region of the scan lens to process a workpiece with the laser energy transmitted by the scan lens. The scan region can be shifted to a different location within the scan lens, e.g., to delay or avoid accumulation of laser-induced damage within the scan lens, while processing a workpiece.

A laser machining device includes a reflective plate disposed perpendicular to the optical axis of emitting light and having a constant reflectance to the emitting light; a return light measurement unit which measures intensity distribution of return light reflected off the reflective plate and returning to the external optical system via a beam splitter; a storage unit which stores the return light intensity distribution in a normal state as reference data; a preprocessing unit which performs processing of identifying at least one of an optical axis shift, a beam diameter anomaly, a mode anomaly, a ghost, contamination of a protective window, and a focus shift due to thermal lens effect on the basis of comparison between measurement data of the return light intensity distribution and the reference data, before laser machining; and a warning unit which warns of an anomaly in the external optical system in accordance with the preprocessing unit.

Disclosed herein is a laser apparatus including: a laser oscillator configured to generate a laser beam; a plurality of mirror mount assemblies each arranged in one of predetermined reference transmission steps, each of the mirror mount assemblies including: a mount-side reflective mirror configured to reflect and transmit the laser beam; and an aligner configured to change alignment of the mount-side reflective mirror to adjust a machining optical path through which the laser beam transmitted by the mount-side reflective mirror travels; a laser nozzle assembly including a laser nozzle configured to radiate the laser beam transmitted from the mirror mount assembly located in the last step of the reference transmission steps onto an object to be processed; a database configured to store big data constructed to include optical path adjustment data indicating a pattern of selective adjustment of the machining optical path by the mount-side reflective mirror linked with the aligner according to a driving method of the aligner; and a controller configured to correct, when distortion occurs in the machining optical path, the distortion of the machining optical path by selectively driving the aligner provided in each of at least one mirror mount assembly among the mirror mount assemblies based on the big data using a driving method according to a pattern of the distortion of the machining optical path.

A deposition method is provided wherein a donor substrate (10) is arranged opposite a target substrate (20), the donor substrate having a surface (12) facing the target substrate that is provided with a viscous donor material (14). An optical beam (30) is directed via the donor substrate to the donor material so as to release the donor material and to therewith transfer the donor material as a jet towards the target substrate. In the method provided herein an input signal (D.sub.S) is received that specifies a shape to be assumed by the jet with which the donor material is to be transferred and an energy profile of the optical beam is accordingly controlled. Additionally or alternatively the energy profile of the optical beam may be controlled in accordance with a pattern according to which the donor material is to be deposited on the target substrate. Likewise a corresponding deposition apparatus is provided.

In a method for controlling an irradiation system for use in an apparatus for producing a three-dimensional work piece, a first and a second irradiation area as well as an overlap area arranged between the first and the second irradiation area are defined on a surface of a carrier adapted to receive layers of a raw material powder to be irradiated with electromagnetic or particle radiation emitted by the irradiation system. A first irradiation unit of the irradiation system is assigned to the first irradiation area and the overlap area, and a second irradiation unit of the irradiation system is assigned to the second irradiation area and the overlap area. At least one of the first irradiation area, the second irradiation area and the overlap area is defined in dependence on a geometry of the three-dimensional work piece to be produced.