Numerous embodiments are disclosed. In one, a laser-processing apparatus includes a positioner arranged within a beam path along which a beam of laser energy is propagatable. A controller may be used to control an operation of the positioner to deflect the beam path within first and second primary angular ranges, and to deflect the beam path to a plurality of angles within each of the first and second primary angular ranges. In another, an integrated beam dump system includes a frame; and a pickoff mirror and beam dump coupled to the frame. In still another, a wavefront correction optic includes a mirror having a reflective surface having a shape characterized by a particular ratio of fringe Zernike terms Z4 and Z9. Many more embodiments are disclosed.

A laser crystallization device includes a laser oscillator, a stage, and a reflection unit. The stage is configured to support a substrate with a target film disposed on the substrate. The laser oscillator is configured to irradiate an incident laser beam on the target film. The stage is configured to move the substrate such that the incident laser beam scans the target film. The incident laser beam is reflected from the target film to generate a reflected laser beam. The reflection unit includes at least two reflection mirrors positioned at a path of the reflected laser beam. The reflection unit is configured to re-irradiate the reflected laser beam on the target film two or more times through a plurality of paths that are different from a path of the incident laser beam.

A laser welding apparatus includes a laser head for irradiating laser beams transferred through a plurality of transferring optical fibers to a processing target connected thereto via a connector, wherein the laser head includes an optical fiber block having an accommodating space for accommodating the plurality of transferring optical fibers to be arranged along a first direction, and an optical system disposed in front of the optical fiber block and irradiating the laser beams transferred through the plurality of transferring optical fibers to the processing target.

A laser processing head is presented. The laser processing head includes a laser entry module for introducing a laser beam; a collimating module for collimating the laser beam; a scanning module for deflecting the laser beam; a focusing module for focusing the laser beam; and at least one diaphragm for increasing a scan field of the laser beam. The diaphragm comprises a diaphragm body and an opening, and is configured to limit a cross-sectional area of the laser beam by the diaphragm body. The at least one diaphragm is positioned optically downstream of the laser entry module and optically upstream of the focusing module. A laser processing system including the laser processing head is also presented. Furthermore, a method for increasing a scan field of the laser beam is also provided.

Disclosed is a manufacturing method of a welded pipe, which includes: bending a stainless steel strip while conveying the stainless steel strip in one direction to thereby form a pipe; and welding a butting part of the formed pipe.

The present disclosure relates to an apparatus for modifying a curvature of a thin plate optic using controlled heat and densification of portions of the optic. In one embodiment the system has a support structure for supporting the optic about a perimeter thereof, a laser configured to generate a beam having a predetermined energy, and the beam being directed at one surface of the optic. The beam heats and densifies portions of the optic to create a force on the optic. The force induces a stress produces a controlled deformation of the optic. The controlled deformation at least one of modifies a curvature of, or corrects a defect in, the optic.

An apparatus and a method for powder bed fusion additive manufacturing involve a multiple-chamber design achieving a high efficiency and throughput. The multiple-chamber design features concurrent printing of one or more print jobs inside one or more build chambers, side removals of printed objects from build chambers allowing quick exchanges of powdered materials, and capabilities of elevated process temperature controls of build chambers and post processing heat treatments of printed objects. The multiple-chamber design also includes a height-adjustable optical assembly in combination with a fixed build platform method suitable for large and heavy printed objects. A side removal mechanism of the build chambers of the apparatus improves handling and efficiency for printing large and heavy objects. Use of a wide range of sensors in the apparatus and by the method allows various feedback to improve quality, manufacturing throughput, and energy efficiency.

Optical device (1) comprising a carrier (4), an optical element (2) and a radiation sink (3), wherein the optical element (2) is mounted on the carrier (4), the optical element (2) is movably attached to the carrier (4), the carrier (4) has a recess (7), wherein the optical device (1) is arranged to interact with electromagnetic radiation (9), dividing the electromagnetic radiation (9) in a first portion (91) and a second portion (92), the optical element is arranged to deflect the first portion in a definable direction, and the second portion (92) is incident into the recess (7) and impinges onto the radiation sink (3).

A laser processing method for processing a wafer using a laser processing apparatus, where the laser processing apparatus includes a holding unit, a laser oscillator for emitting a pulsed laser beam, a polygon mirror for dispersing the pulsed laser beam emitted from the laser oscillator, a condenser for condensing the pulsed laser beam dispersed by the polygon mirror and applying the condensed pulsed laser beam to the workpiece and dispersed region adjuster for controlling a dispersed region of the pulsed laser beam, where the laser processing method includes steps of holding the workpiece on the holding unit and processing the workpiece held by the holding unit by applying the pulsed laser beam, where during processing, the dispersed region adjuster controls the dispersed region of the pulsed laser beam by causing the pulsed laser beam to follow a direction in which the mirror facets of the polygon mirror are rotated.

An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved structure formation, part creation and manipulation, use of multiple additive manufacturing systems, and high throughput manufacturing methods suitable for automated or semi-automated factories are also disclosed.