A laser machining apparatus for machining a workpiece placed and fixed on a table by moving the irradiation position of a laser beam on the workpiece while irradiating the workpiece is provided with: a laser oscillator; a laser irradiation head that emits the laser beam from the laser oscillator toward the workpiece and that is provided with a galvano-scanner for moving a laser beam irradiation position on the surface of the workpiece in two directions; a parallel manipulator that changes the orientation of the laser irradiation head; a slide member that supports the parallel manipulator; and linear feed shaft device that moves the slide member in at least two orthogonal directions relatively to the table.

A method for marking, at the outlet of a forming machine using a laser beam, a marking area on hot glass containers comprises determining the longitudinal and transverse positions of the marking area of each container by positioning a first optical axis of a first light sensor and a second optical axis of a second light sensor in a non-parallel manner to each other, in a detection plane parallel to the conveying plane of the containers, detecting the instant of intersection or disengagement, by a container, of the first optical axis and the instant of intersection or disengagement, by a container, of the second optical axis, and calculating said transverse and longitudinal positions from these instants and in consideration of a known or constant speed of translation of the containers. The method can determine the marking instant for each container running past the laser apparatus.

A method for marking, at the outlet of a forming machine using a laser beam, a marking area on hot glass containers comprises determining the longitudinal and transverse positions of the marking area of each container by positioning a first optical axis of a first light sensor and a second optical axis of a second light sensor in a non-parallel manner to each other, in a detection plane parallel to the conveying plane of the containers, detecting the instant of intersection or disengagement, by a container, of the first optical axis and the instant of intersection or disengagement, by a container, of the second optical axis, and calculating said transverse and longitudinal positions from these instants and in consideration of a known or constant speed of translation of the containers. The method can determine the marking instant for each container running past the laser apparatus.

A device is provided for setting a focus position (z) of a laser beam in a laser machining system. The device comprises a computing unit configured to calculate a time-dependent value z.sub.t of the focus position (z), wherein the computing unit calculates the time-dependent value z.sub.t of the focus position (z) based on a first parameter and a second parameter, wherein the first parameter indicates a magnitude A of a laser-power dependent focus shift per power unit and the second parameter indicates a time constant τ of a change in focus position due to a thermal lens by a factor of 1/e, and a control unit configured to use a mechanism for setting the focus position (z) to set the focus position (z) of the laser beam based on the time-dependent value z.sub.t of the focus position (z).

A device is provided for setting a focus position (z) of a laser beam in a laser machining system. The device comprises a computing unit configured to calculate a time-dependent value z.sub.t of the focus position (z), wherein the computing unit calculates the time-dependent value z.sub.t of the focus position (z) based on a first parameter and a second parameter, wherein the first parameter indicates a magnitude A of a laser-power dependent focus shift per power unit and the second parameter indicates a time constant τ of a change in focus position due to a thermal lens by a factor of 1/e, and a control unit configured to use a mechanism for setting the focus position (z) to set the focus position (z) of the laser beam based on the time-dependent value z.sub.t of the focus position (z).

An additive manufacturing device utilizing an electron beam and laser integrated scanning comprises: a vacuum generating chamber (1); a worktable means having a forming region at least provided in the vacuum generating chamber (1); a powder supply means configured to supply a powder to the forming region; an electron-beam emission focusing and scanning means (6) and an laser-beam emission focusing and scanning means (7) configured in such a manner that a scanning range of the electron-beam emission focusing and scanning means (6) and a scanning range of the laser-beam emission focusing and scanning means (7) cover at least a part of the forming region; and a controller configured to control the electron-beam emission focusing and scanning means (6) and the laser-beam emission focusing and scanning means (7) to perform a powder integrated-scanning and forming treatment on the forming region.

An additive manufacturing device utilizing an electron beam and laser integrated scanning comprises: a vacuum generating chamber (1); a worktable means having a forming region at least provided in the vacuum generating chamber (1); a powder supply means configured to supply a powder to the forming region; an electron-beam emission focusing and scanning means (6) and an laser-beam emission focusing and scanning means (7) configured in such a manner that a scanning range of the electron-beam emission focusing and scanning means (6) and a scanning range of the laser-beam emission focusing and scanning means (7) cover at least a part of the forming region; and a controller configured to control the electron-beam emission focusing and scanning means (6) and the laser-beam emission focusing and scanning means (7) to perform a powder integrated-scanning and forming treatment on the forming region.

A laser processing device including a laser light source that outputs laser light, a measurement light source that outputs measurement light, a converging unit that converges the laser light toward an object to be processed to form a first converging point and converges the measurement light toward the object to be processed to form a second converging point, a measurement part for measuring displacement of an entrance surface according to reflected light of the measurement light on the entrance surface of the laser light and the measurement light in the object to be processed, and an adjustment unit that adjusts a position of the first converging point in a direction intersecting the entrance surface according to a measurement result of the displacement of the entrance surface.

A laser processing device including a laser light source that outputs laser light, a measurement light source that outputs measurement light, a converging unit that converges the laser light toward an object to be processed to form a first converging point and converges the measurement light toward the object to be processed to form a second converging point, a measurement part for measuring displacement of an entrance surface according to reflected light of the measurement light on the entrance surface of the laser light and the measurement light in the object to be processed, and an adjustment unit that adjusts a position of the first converging point in a direction intersecting the entrance surface according to a measurement result of the displacement of the entrance surface.

A device for determining a focal position of a laser beam, in particular a processing laser beam in a laser processing head, has an optical decoupling element for decoupling a partial beam from a beam path of the laser beam, a detector for detecting at least one beam parameter of the partial beam, and at least one optical element with an adjustable focal length, which is arranged in a region of the beam path of the partial beam between the optical decoupling element and the detector. Also disclosed is a laser processing head which includes a device of this type, as well as a method for determining a focal position of a laser beam.