The present disclosure relates to a system for performing an Additive Manufacturing (AM) fabrication process on a powdered material, deposited as a powder bed and forming a substrate. The system makes use of a laser for generating a laser beam, and an optical subsystem. The optical subsystem is configured to receive the laser beam and to generate an optical signal comprised of electromagnetic radiation sufficient to melt or sinter the powdered material. The optical subsystem uses a digitally controlled mask configured to pattern the optical signal as needed to melt select portions of a layer of the powdered material to form a layer of a 3D part. A power supply and at least one processor are also included for generating a plurality of different power density levels selectable based on a specific material composition, absorptivity and diameter of the powder particles, and a known thickness of the powder bed. The powdered material is used to form the 3D part in a sequential layer-by-layer process.

The present disclosure relates to a system for performing an Additive Manufacturing (AM) fabrication process on a powdered material, deposited as a powder bed and forming a substrate. The system makes use of a laser for generating a laser beam, and an optical subsystem. The optical subsystem is configured to receive the laser beam and to generate an optical signal comprised of electromagnetic radiation sufficient to melt or sinter the powdered material. The optical subsystem uses a digitally controlled mask configured to pattern the optical signal as needed to melt select portions of a layer of the powdered material to form a layer of a 3D part. A power supply and at least one processor are also included for generating a plurality of different power density levels selectable based on a specific material composition, absorptivity and diameter of the powder particles, and a known thickness of the powder bed. The powdered material is used to form the 3D part in a sequential layer-by-layer process.

There is provided a laser light irradiating device that includes a spatial light modulator configured to modulate laser light output from a laser light source according to a phase pattern and emit the modulated laser light, an objective lens configured to converge the laser light emitted from the spatial light modulator onto the object, a focusing lens arranged between the spatial light modulator and the objective lens in an optical path of the laser light and configured to focus the laser light, and a slit member arranged at a focal position on a rear side of the focusing lens in the optical path of the laser light and configured to block a part of the laser light.

A method including emitting a laser beam toward a transparent workpiece such that portions of the laser beam pass through openings of a beam shaping structure and form corresponding laser beam focal lines across the transparent workpiece. The laser beam focal lines forming a plurality of defects in the transparent workpiece disposed along a contour line. The method further including separating the transparent workpiece along the contour line to provide a first workpiece section and a second workpiece section and a cut edge surface on each of the first and second workpiece sections, each cut edge including a defect region and an unaffected region. The defect region having a higher surface roughness than the unaffected region and a minimum distance of the unaffected region to the first major surface being about 20% or less of a thickness between the first major surface and the second major surface.

The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components. The second beam component has a higher power level and a shorter duration than the first beam component. A mask creates a 2D optical pattern in which only select portions of the second beam components can irradiate the powder particles. The first beam component heats the powder particles close to a melting point, where the particles experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer before the surface tension forces can act on and distort the particles, enabling the particles and the interface layer are able to bond together.

The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components. The second beam component has a higher power level and a shorter duration than the first beam component. A mask creates a 2D optical pattern in which only select portions of the second beam components can irradiate the powder particles. The first beam component heats the powder particles close to a melting point, where the particles experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer before the surface tension forces can act on and distort the particles, enabling the particles and the interface layer are able to bond together.

Method for manufacturing a spray partition pierced with a network of holes through which a fluid product passes under pressure so as to be broken into fine droplets, the process comprising the following steps: a) providing a laser source (S) able to produce a laser beam (F), b) forming the laser beam (F) into an array of parallel partial laser beams (Fp), c) directing the array of parallel partial laser beams (Fp) so as to strike a membrane (P0), d) letting the array of parallel partial laser beams (Fp) strike the membrane (P0) with a view to piercing a network of holes into it (O1), so as to obtain a spray partition pierced with a network of holes,
characterised in that the entirety of the holes of the spray partition are pierced, consecutively, by a plurality of arrays of partial laser beams.

Method for manufacturing a spray partition pierced with a network of holes through which a fluid product passes under pressure so as to be broken into fine droplets, the process comprising the following steps: a) providing a laser source (S) able to produce a laser beam (F), b) forming the laser beam (F) into an array of parallel partial laser beams (Fp), c) directing the array of parallel partial laser beams (Fp) so as to strike a membrane (P0), d) letting the array of parallel partial laser beams (Fp) strike the membrane (P0) with a view to piercing a network of holes into it (O1), so as to obtain a spray partition pierced with a network of holes,
characterised in that the entirety of the holes of the spray partition are pierced, consecutively, by a plurality of arrays of partial laser beams.

A laser processing apparatus includes: an electro-optical element; a laser irradiation unit that irradiates the electro-optical element with laser; a pair of electrodes provided on both sides of the electro-optical element so as to sandwich the electro-optical element therebetween; a cushioning material having conductivity provided between the pair of electrodes and the electro-optical element; a shield material that is provided on an incident side of the electro-optical element, in an irradiation direction of the laser intersecting a direction in which a voltage applied by the pair of electrodes is applied, and prevents incidence of the laser onto the cushioning material; and a cooling unit that cools the shield material. The cooling unit includes a cooling block and a pipe connected to the cooling block.

A laser processing apparatus includes: an electro-optical element; a laser irradiation unit that irradiates the electro-optical element with laser; a pair of electrodes provided on both sides of the electro-optical element so as to sandwich the electro-optical element therebetween; a cushioning material having conductivity provided between the pair of electrodes and the electro-optical element; a shield material that is provided on an incident side of the electro-optical element, in an irradiation direction of the laser intersecting a direction in which a voltage applied by the pair of electrodes is applied, and prevents incidence of the laser onto the cushioning material; and a cooling unit that cools the shield material. The cooling unit includes a cooling block and a pipe connected to the cooling block.