A method for the laser reinforced direct bonding of two optical components having a respective bonding surface and a reinforced optical assembly made thereby are provided. The method includes a first step of assembling the two optical components by direct bonding of their respective bonding surface together, thereby defining a direct-bonded interface therebetween. The method further includes a second step of reinforcing the direct-bonded interface with a weld seam including at least one substantially continuous reinforcing weld line forming a closed shape enclosing a sealed direct-bonded region. Each weld line is inscribed by focusing ultrashort laser pulses at the direct-bonding interface so as to generate non-linear optical phenomena inducing a localized junction between the two optical components. Advantageously, embodiments of the present invention provide reinforced optical assemblies exhibiting hermetic and mechanically resistant bonds over a large area as well as negligible alteration of their optical transmission properties.

A device and a method for performing and monitoring a plastic laser transmission welding process includes a processing beam source for emitting a processing radiation into a joining zone between two joining members so that a weld seam is formed, a measuring beam source for irradiating a measuring zone with a measuring radiation, a detection unit for detecting the measuring radiation reflected by an interface between the weld seam and its surroundings in the joining members, and an evaluation unit connected to the detection unit for determining the depth position of the interface in the joining members from the detected reflected measuring radiation.

A process for room temperature substrate bonding employs a first substrate substantially transparent to a laser wavelength is selected. A second substrate for mating at an interface with the first substrate is then selected. A transmissivity change at the interface is created and the first and second substrates are mated at the interface. The first substrate is then irradiated with a laser of the transparency wavelength substantially focused at the interface and a localized high temperature at the interface from energy supplied by the laser is created. The first and second substrates immediately adjacent the interface are softened with diffusion across the interface to fuse the substrates.

A reaction plate includes a welded plastics planar laminate consisting of an aperture plate and a film, the aperture plate having at least one planar surface and a plurality of apertures in the planar surface of the apertured plate and the film being attached to the planar surface of the apertured plate around the or each aperture by welding. The welding is preferably laser or transmission welding. A method of forming such reaction plates using diode laser welding. An apparatus is provided for handling such reaction plates including performing polymerase chain reactions (PCRs) or primer extensions therewith.

A method for producing a resin part includes: preparing an intermediate body comprising a first member and a second member, the first member containing a resin; and welding the first member with the second member by performing scanning of the intermediate body with a first laser beam and a second laser beam. In the welding of the first member with the second member, the scanning with the first laser beam and the second laser beam is performed in a state in which a center of a second spot is located on a rear side in a direction of the scanning with the first laser beam and the second laser beam as compared to a center of a first spot while at least a part of the first spot and at least a part of the second spot overlap with each other.

A formed article obtained by performing laser welding on a transmitting resin member and an absorbing resin member, includes: a bonded part where the transmitting resin member and the absorbing resin member are bonded to each other by the laser welding, in which a molten pool is observed at the bonded part in a cross section that includes a normal to the transmitting resin member or the absorbing resin member and is orthogonal to a scanning direction of a laser beam, an area of the molten pool is 0.210 mm.sup.2 or more and 1.00 mm.sup.2 or less, the transmitting resin member and the absorbing resin member are each molded from a resin composition, the resin composition contains a thermoplastic resin, the thermoplastic resin contains at least a polyamide-based resin (A1), and a glass transition point temperature of the resin composition is 85 C. or higher.

Methods, apparatuses, devices, and substrates are described. Multiple layers of a substrate may be bonded using a laser beam that is rotating about an axis and while the substrate is laterally translated with respect to the laser beam. Further, a direction of the laser beam may be modified such that the laser beam is incident on a surface of a layer of the substrate at an acute angle with respect to the surface. In such cases, the respective layers of the substrate may be bonded by irradiating the surface with the rotating laser beam, thereby resulting in spiral-shaped bonding lines between the layers. The layers may be bonded when one of the layers is coupled with an element (e.g., a blocking element), and the acute angle of the laser beam may enable irradiation an area that is below the element while leaving the element unaffected by the laser beam.

A method for manufacturing an acoustic panel includes the assembly of at least one acoustic component with an acoustic skin, the acoustic component including a plurality of hollow acoustic elements having a shape progressively tapering between a base and an apex, the bases of the hollow acoustic elements being connected to one another by connecting edges, wherein the connecting edges of the acoustic component are made of a transparent thermoplastic material and wherein the acoustic skin is made of an opaque thermoplastic material, and the connecting edges are attached to the acoustic skin by laser welding.

An operation member is provided and includes a first resin member having a plate shape and formed of a material that transmits laser light; and a second resin member having a tubular shape and formed of a material that absorbs the laser light. The first resin member and the second resin member are laser-welded in an opening included in the second resin member. The second resin member includes a bonding projection provided to project from an inner circumferential surface of the opening toward an inner diameter side of the second resin member. An outer circumferential portion of the first resin member is placed over the bonding projection of the second resin member. The outer circumferential portion of the first resin member is laser-welded to the bonding projection of the second resin member.

A first aspect of the present disclosure relates to a method of manufacturing an electrode. The method includes a laminating step of laminating a thermoplastic resin material on a peripheral edge portion of a metal foil, a first welding step of irradiating a first region among a plurality of regions obtained by dividing a region on the resin material in a direction intersecting with a circumferential direction of the resin material with laser light to melt the resin material and welding the metal foil and the resin material to each other, and a second welding step of irradiating a second region different from the first region among the regions with the laser light after the first welding step to melt the resin material and welding the metal foil and the resin material to each other.