A laser beam scanner including a laser beams positioning optic, a plurality of optical fibres for delivering a plurality of laser beams and a fibre termination optic aligned to direct the laser beams from output ends of the plurality of optical fibres to the laser beams positioning optic. The laser beams positioning optic is movable relative to the fibre termination optic to scan the laser beams across a working surface.

In a an apparatus and a method for manufacturing a stereoscopic shape using a laser and a powder, the apparatus includes a chamber, a powder supplier, a table, a cotter, a first laser head, a first stage, a second laser head and a second stage. The powder supplier provides a predetermined quantity of powder. The powder is sequentially integrated to be a plurality of powder layers in the table. The cotter moves between the powder supplier and the table, and forms the powder to be a predetermined thickness. The first laser head has a first scanner and a first F theta lens, and irradiates a first laser beam to the powder layer. The first stage transfers the first laser head. The second laser head has a second scanner and a second F theta lens, and irradiates a second laser beam. The second stage transfers the second laser head.

A system for laser marking a substrate includes a multi-emitter array (16) for directing radiation onto a substrate. The multi-emitter array has a radiation guide (19) defining a number of discrete emission channels (20) with emitting ends (20a) of the emission channels (20) arranged in an array. Each emission channel (20) is coupled at its opposing end with two or more laser diodes (18a, 18b). The laser diodes (18a, 18b) are operated at a maximum operational output power (P.sub.op) sufficiently below their rated maximum power (P.sub.m) to provide acceptable levels of reliability whilst providing a combined radiation (24) emitted from each channel (20) having a power high enough to achieve increased operational speeds. The multi-emitter array (19) may comprise a number of optical fibres (26) whose emitter ends are arranged in an array. The system is particularly suited for inkless printing on substrates susceptible to colour change when irradiated.

A method of manufacturing a secondary battery is provided. According to the manufacturing method, laser light includes first peak light applied to a first irradiation position located on a cover body, second peak light applied to a second irradiation position located between the first irradiation position and a connecting surface, and third peak light applied to the connecting surface. The first peak light is higher in intensity than the second peak light and the third peak light. The third peak light is higher in intensity than the second peak light.

A method of producing a 3D article by additive manufacture is provided. The method includes the steps of: forming a meltpool in an already-existing part of the article, and moving the meltpool relative thereto; feeding a directed feedstock into the moving meltpool to deposit and fuse a layer of material on the already-existing part; and repeating the forming and moving and feeding steps to build up successive layers of material. In performance of the forming and moving step: a first energy source impinges at a first region of the already-existing part which moves with and leads the meltpool, whereby the first energy source initiates the formation of the meltpool; and a second energy source impinges at a second region on the already-existing part which moves with and follows the first region, whereby the second energy source grows the lateral width of the meltpool before the feedstock is fed therein.

A laser crystallizing apparatus includes a first light source unit configured to emit a first input light having a linearly polarized laser beam shape. A second light source unit is configured to emit a second input light having a linearly polarized laser beam shape. A polarization optical system is configured to rotate the first input light and/or the second input light at a predetermined rotation angle. An optical system is configured to convert the first input light and the second input light, which pass through the polarization optical system, into an output light. A target substrate is seated on a stage and output light is directed onto the target substrate. A monitoring unit is configured to receive the first input light or the second input light from the polarization optical system and measure a laser beam quality thereof.

An optical arrangement converts an input laser beam into a line-like output beam, which propagates along a propagation direction and which has, in a working plane, a line-like beam cross section extending along a line direction. The optical system includes: a reshaping optical unit having an input aperture, through which the input laser beam is radiated, and an elongate output aperture, elongatedly extending along an aperture longitudinal direction, the reshaping optical unit converting the input laser beam radiated through the input aperture into a beam packet exiting through the output aperture; and a homogenization optical unit which converts the beam packet into the line-like output beam, different beam segments of the beam packet being intermixed and superimposed along the line direction. The aperture longitudinal direction extends in a manner rotated about the propagation direction by a non-vanishing angle of rotation with respect to the line direction.

A laser welding method and a laser welding apparatus capable of preventing formation of blowholes and obtaining an excellent welled state are provided. An embodiment is a laser welding method for a component to be welded 40 including a third metal component 40c sandwiched between first and second metal components 40a and 40b, in which the metal components are welded to each other by scanning a laser beam in a first direction perpendicular to a direction in which the third metal component 40c is sandwiched, in which a welded part 42 is formed by applying a first laser beam 12a while scanning it in the first direction and thereby melting and then solidifying the component to be welded 40.

An additive manufacturing system includes a platform, a dispenser to dispense a plurality of layers of feed material on a top surface of the platform, a light source to generate a first light beam and a second light beam, a polygon mirror scanner, a galvo mirror scanner positioned adjacent to the polygon mirror scanner, and a controller. The controller is coupled to the light source, the polygon mirror scanner and the galvo mirror scanner, and the controller is configured to cause the light source and polygon mirror scanner to apply the first light beam to a region of the layer of feed material, and to cause the light source and galvo mirror scanner to apply the second light beam to at least a portion of the region of the layer of feed material.

A laser processing apparatus includes: a light flux separating-and-combining device configured to polarize and separate a laser light into two polarized light fluxes having polarization orthogonal to each other and emit the two light fluxes with their optical paths matching each other toward different regions of a spatial light modulator, and configured to combine the two polarized light fluxes modulated by the spatial light modulator and emit the two light fluxes toward a condenser lens; and a controller configured to control hologram patterns presented by the spatial light modulator for respective regions of the spatial light modulator irradiated with the two polarized light fluxes such that the laser light is condensed by the condenser lens at two positions different from each other in a thickness direction inside of the wafer and the same as each other in a relative movement direction of the laser light to form modified regions.