A method for joining at least two components of a fuel cell, especially for joining two single plates of a fuel cell to make a bipolar plate, comprises: providing a first component of the fuel cell and providing at least one second component of the fuel cell; and directing a pulsed laser beam of a laser apparatus onto a rotating mirrored polygon wheel, by which the laser beam forms a joint line consisting of a plurality of overlapping pointlike and/or line-shaped joining locations on the components. A device for carrying out the method is also provided.

A laser irradiation apparatus includes: a laser module configured to emit a laser beam; a first optical system configured to scan the laser beam emitted from the laser module along a first direction; an optical element configured to refract the laser beam emitted from the first optical system; and a substrate supporter on which a base substrate to which the laser beam refracted through the optical element reaches is arranged.

An apparatus for manufacturing a display device includes: a stage unit; and a suction unit located above the stage unit, wherein the suction unit includes: a main body including an outer box with top and bottom openings and an inner cup disposed in the outer box; a first air blower disposed above the main body and including a first main pipe extending in a first direction and a second air blower including a second main pipe extending in a second direction intersecting the first direction; a lower plate coupled to a lower end of the outer box and including a through hole; and a suction inlet defined by an inner end of the lower plate defining the through hole and a lower end of the inner cup, wherein the suction inlet is opened downward.

A pattern formation apparatus is configured to irradiate each of a plurality of base materials being conveyed, with laser such that one of a light path length and a beam size at a position of the plurality of base materials is approximately constant, to form a pattern on a surface of each of the plurality of base materials.

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.

A processing device for processing a material with a focused blasting medium, having at least a blasting medium source for generating the blasting medium and a conveying device for the material, or additionally a deflecting means for deflecting the blasting medium emitted by the blasting medium source toward the material; wherein the conveying device is arranged opposite the blasting medium source or the deflecting means in such a way that the material, at least with a region to be processed by the blasting medium, can be processed by the conveying device on a circular path opposite the blasting medium source or the deflecting means, so that the material, when the blasting medium source or the deflecting means is moved, can be processed along the circular path with a constant focus position of the blasting medium. A method for processing a material with a focused blasting medium in a processing device.

The technology disclosed relates to high utilization of donor material in a writing process using Laser-Induced Forward Transfer. Specifically, the technology relates to reusing, or recycling, unused donor material by recoating target substrates with donor material after a writing process is performed with the target substrate. Further, the technology relates to target substrates including a pattern of discrete separated dots to be individually ejected from the target substrate using LIFT.

A pattern forming apparatus for forming a pattern by emitting a scanning light onto a plurality of base materials conveyed in a predetermined conveying direction, includes a plurality of emitting units including a first emitting unit and a second emitting unit. The first emitting unit includes a first light source unit to emit a first laser light; a first conveying direction light scanning unit to scan the first laser light in the predetermined conveying direction; a first intersecting direction light scanning unit to scan a scanning light, scanned by the first conveying direction light scanning unit, in an intersecting direction that intersects the predetermined conveying direction. Further, there is a first light emitting unit to emit a first scanning light, scanned by the first intersecting direction light scanning unit, onto a base material among the plurality of base materials.

The present invention is related to a heating device for heating an object material using a laser beam, the heating device comprising a stage on which the object material is placed; a laser module for generating and outputting a laser beam; an optical module for controlling a path of the laser beam; a polygon mirror rotating around an axis of rotation and having a plurality of reflecting surfaces which reflect the laser beam; and a beam guide module for controlling an incidence range within which the laser beam reflected by the polygon mirror is incident on the object material, and an indirect heating method using a laser beam in a heating device.

The present disclosure describes three-dimensional (3D) printing apparatuses, processes, software, and systems for producing high quality 3D objects. Described herein are printing apparatuses that facilitate control of water vapor concentration during one or more printing operations.