A method of forming an object from a material includes directing a first beam of light toward a first target location of the material to define a first portion of the object. The method also includes, after directing the first beam of light toward the first target location, determining an optical correction to be applied by an optical system. The optical correction is based on an atmospheric change in an atmospheric distortion region proximate the first target location due, at least in part, to interaction of the first beam of light and the material. The method further includes directing a second beam of light toward a second target location of the material to define a second portion of the object. The second beam of light is directed through at least a portion of the atmospheric distortion region while the optical correction is applied.

A marking device, a medium, a container, and a marking method. The marking device includes a first marker including a first optical system having a first focal point, the first marker being configured to concentrate a first light onto a first area of a non-planar portion of a medium to perform marking on the first area, the non-planar portion including a plurality of areas including the first area and a second area, and a second marker including a second optical system having a second focal point. The second marker is configured to concentrate a second light onto the second area to perform the marking on the second area, and the second focal point of the second optical system is different from the first focal point of the first optical system in a direction parallel to a central axis of the first optical system.

A laser processing apparatus includes a process laser light source, a first optical system, a pulse laser light source, a second optical system, and an optical detection portion. The process laser light source generates a process laser beam having a continuous energy density during a certain period of time. The first optical system directs the process laser beam to a surface of a workpiece. The pulse laser light source generates a pulse laser beam having an energy density with a peak value that is higher than the energy density of the process laser beam. The second optical system directs the pulse laser beam to a process portion of the workpiece. The optical detection portion detects plasma light produced at the process portion of the workpiece.

Disclosed herein is a film cutting system for dividing and forming a film sheet having a predetermined unit width and unit length from a raw film by laser cutting of the raw film. The film cutting system includes: a supply unit configured to intermittently supply the raw film by a predetermined unit supply length in a length direction of the raw film; a first laser unit including first and second laser nozzles each configured to radiate a laser beam onto the raw film, and a first head driver configured to convey the first laser nozzle and the second laser nozzle in a width direction of the raw film perpendicular to the length direction in a reciprocating manner; and a second laser unit including a laser nozzle disposed spaced apart from the first laser unit by the unit length in the length direction and configured to radiate a laser beam onto the raw film, and a second head driver configured to convey the laser nozzle in the width direction in a reciprocating manner, wherein, when the raw film is supplied by the supply unit, the first head driver dispose the first laser nozzle and the second laser nozzle so as to be spaced apart from each other by the unit width, and each of the first laser nozzle and the second laser nozzle radiates, in the length direction, the laser beam onto the raw film supplied by the supply unit to slit the raw film, and wherein, when the slitting of the raw film is completed, the supply unit stops supplying the raw film; the first head driver conveys one of the first laser nozzle and the second laser nozzle in the width direction; the second head driver conveys the laser nozzle in the width direction; and the one of the first laser nozzle and the second laser nozzle and the laser nozzle respectively radiate the laser beam onto the raw film in the width direction to cut the raw film to divide and form the film sheet from the raw film.

A branching element configured to branch a second laser light into a plurality of beams of branch light along a machining feed direction, and a second condenser lens configured to focus the plurality of beams of branch light branched by a branching element onto a street to be machined are provided, and a time period τ is expressed as τ=L/V, where L is a branch distance, which corresponds to spacing between adjacent leading and trailing spots for each of branch lights focused on the street by the second condenser lens, V is a machining speed, which corresponds to a speed of relative movement, and τ is the time period taken until the trailing spot overlaps a machining position of the leading spot, and τ>τ1 is satisfied, where τ1 is a threshold value of the time period when deterioration of the machining quality of the second groove occurs.

A described method includes engraving, marking and/or inscribing a workpiece using a laser plotter. In a housing of the laser plotter, one, preferably more, in particular two laser sources in the form of lasers have an effect preferably alternating on the workpiece to be processed. The workpiece is laid in a defined manner on a processing table and a laser beam emitted from the beam source is transmitted to at least one focusing unit via deflection elements and the laser beam is diverted toward the workpiece and focused for processing. A sequence control adapted to the quality of the engraving is determined and/or carried out by a control unit and the focusing unit on the carriage is controlled corresponding to the defined parameters of the sequence control.

It is configured such that, for performing variable engravement for each formed object on a coil material to be fed to a press machine for molding a part of a can, a formed object with an engravement can be molded at a high productivity. A laser engraving device is a device for performing laser engraving on a coil material to be fed to a press machine for molding a part of a can, and includes a feeding mechanism for deeding a coil material at a predetermined speed, a laser head for irradiating the coil material fed at the predetermined speed with a laser beam, and performing engravement for each formed object, and a data communication unit for switching engraving data of the laser head. The data communication unit collectively switches a plurality of engraving data to be subjected to engravement on a plurality of formed objects, and the laser head continuously performs engravement of the plurality of engraving data on predetermined positions of the coil material.

An additive manufacturing system includes a plurality of laser devices, a plurality of first scanning devices, and an optical system. The optical system includes an optical detector and a second scanning device. The plurality of laser devices are each configured to generate a laser beam. The plurality of first scanning devices is each configured to selectively direct the laser beam from a laser device of the plurality of laser devices across a powder bed. The laser beam generates a melt pool in the powder bed. The optical detector is configured to detect electromagnetic radiation generated by the melt pool. The second scanning device is configured to direct electromagnetic radiation generated by the melt pool to the optical detector. The optical system is configured to detect a position of the laser beams in the melt pool.

A laser calibration device includes a scanning surface, an optical detector for scanning a calibration substrate arranged on the scanning surface, and a processing unit. The optical detector is movable with respect to the scanning surface with not more than two, preferably not more than one, degree of freedom. The processing unit is configured for: generating pattern generation executable instructions to generate a calibration pattern on a calibration substrate by one or more laser processing devices of a laser processing apparatus; detecting a calibration pattern generated based on such pattern generation executable instructions; and based on a detected calibration pattern and on the corresponding pattern generation executable instructions, generating calibration executable instructions for calibrating the one or more laser processing devices of said laser processing apparatus.

In various embodiments, laser emissions are steered into different regions of an optical fiber, and/or into different optical fibers, in a temporal pattern such that an output has different spatial output profiles. The temporal pattern has a frequency sufficient such that a workpiece is processed by an effective output shape combining the different spatial output profiles.