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公开(公告)号：US20140353293A1
公开(公告)日：2014-12-04
申请号：US14461550
申请日：2014-08-18
发明人： Martin Huonker
CPC分类号： B23K26/128 , B23K26/037 , B23K26/127 , B23K26/20
摘要： A laser processing device for processing workpieces such as by welding includes a laser processing head and a workpiece clamping claw defining an opening through which the laser beam is focused on the workpiece. Each of the laser processing head and the clamping claw have respective shielding portions and movable relative to each other to selectively form a light-tight housing about a portion of the beam extending between the laser head and the clamping claw.
摘要翻译： 用于通过焊接来处理工件的激光加工装置包括激光加工头和限定了激光束聚焦在工件上的开口的工件夹紧爪。 激光加工头和夹爪中的每一个具有相应的屏蔽部分并且可相对于彼此移动，以便围绕在激光头和夹紧爪之间延伸的梁的一部分选择性地形成不透光的壳体。
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122.发明申请Method of Determining a Focal Point or Beam Profile of a Laser Beam in a Working Field 审中-公开确定工作场中激光束的焦点或光束轮廓的方法公开(公告)号：US20140027421A1
公开(公告)日：2014-01-30
申请号：US14040896
申请日：2013-09-30
发明人： Thomas Notheis
CPC分类号： B23K26/08 , B23K26/046 , B23K26/082 , G01J1/4257
摘要： In a method for determining the focal point or the beam profile of a laser beam, which can be deflected in the x and y directions by a scanner optic or an x-y-movement unit and can be displaced in the z direction by a focusing optic or a z-movement unit, at a plurality of measurement points in the two-dimensional working field or three-dimensional working space of the laser beam. An aperture diaphragm, followed by a detector, is arranged at each measurement point. At each measurement point, for x-y-focal point or beam profile measurements, the laser beam is moved by the scanner optic or the x-y-movement unit in an x-y-grid over the measurement aperture in the aperture diaphragm, and, at each grid point, the laser power is measured by the detector, the scanner axis of the scanner optic or the x-y-movement unit being stationary. For z-focal point measurements, the laser beam is displaced by the focusing optic or the z-movement unit in the z direction within the measurement aperture in the aperture diaphragm. The laser power is measured by the detector at each grid point. The focal point and/or the beam profile of the laser beam is then determined at each measurement point from the measurement values.
摘要翻译： 在用于确定激光束的焦点或光束轮廓的方法中，其可以通过扫描器光学元件或xy移动单元在x和y方向上被偏转，并且可以通过聚焦光学元件在z方向上移位， z运动单元，在激光束的二维工作区域或三维工作空间中的多个测量点处。 在每个测量点设置孔径光阑，其次是检测器。 在每个测量点，对于xy焦点或光束轮廓测量，激光束被扫描器光学元件或xy移动单元移动到孔径光阑中的测量孔径上的xy网格中，并且在每个网格点 激光功率由检测器测量，扫描仪光学元件的扫描器轴线或xy运动单元处于静止状态。 对于z焦点测量，激光束在孔径光阑的测量孔内在z方向上被聚焦光学元件或z-移动单元移位。 激光功率由检测器在每个栅格点测量。 然后在每个测量点从测量值确定激光束的焦点和/或光束轮廓。
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公开(公告)号：US20240295696A1
公开(公告)日：2024-09-05
申请号：US18661760
申请日：2024-05-13
申请人： TRUMPF Laser GmbH
CPC分类号： G02B6/14 , H01S3/06754 , H01S3/094
摘要： A mode field adapter for adapting a mode field of an input fibre to a mode field of an output fibre includes a mode field adapter fibre. The mode field adapter fibre includes a mode field adaptation section for adapting a mode field diameter of the mode field of the input fibre to the mode field of the output fibre. The mode field adapter fibre has a length between 5 mm and 150 mm. The mode field adaptation section has a length between 5 mm and 150 mm. The mode field adapter fibre is configured to transfer light from the input fibre in a polarization maintaining manner into the output fibre.
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公开(公告)号：US12066610B2
公开(公告)日：2024-08-20
申请号：US17149754
申请日：2021-01-15
申请人： TRUMPF Laser GmbH
发明人： Martin Huonker
IPC分类号： G02B19/00 , B23K26/06 , B23K26/073 , B23K26/282 , B23K37/053
CPC分类号： G02B19/0028 , B23K26/0643 , B23K26/0734 , B23K26/282 , B23K37/053
摘要： A ring focus optics for machining rotationally symmetrical or nearly rotationally symmetrical workpieces by an annular laser beam includes a conical mirror configured to deflect the annular laser beam radially inward or outward onto a circumference of at least one workpiece, a rotational axis of which is aligned collinear to an optical axis of the ring focus optics. The ring focus optics further includes a holding/centering device surrounded by the annular laser beam and fastened on the housing of the ring focus optics. The holding/centering device is configured to axially fix the at least one workpiece and/or to radially center the at least one workpiece with respect to the optical axis.
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公开(公告)号：US20240165749A1
公开(公告)日：2024-05-23
申请号：US18429488
申请日：2024-02-01
申请人： TRUMPF Laser GmbH
CPC分类号： B23K37/006 , B23K26/707
摘要： A laser installation includes a laser, a laser machining unit, and a safety controller. The laser is configured to provide laser light to the laser machining unit. A laser power of the laser light is variable. The safety controller is communicatively connected to the laser and the laser machining unit. The laser and/or the laser machining unit is configured to transmit at least one parameter value relating to the laser power to the safety controller. The safety controller is configured to compare the at least one parameter value with a limit value, and turn off the laser or block the laser light upon determining that the at least one parameter value exceeds the limit value.
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126.发明公开公开(公告)号：US20240154377A1
公开(公告)日：2024-05-09
申请号：US18408631
申请日：2024-01-10
申请人： TRUMPF Laser GmbH
发明人： Andreas Enzmann
CPC分类号： H01S3/0057 , G02B26/04 , H01S3/0014
摘要： A pulse modification apparatus for dispersive stretching or compression of laser pulses includes at least one dispersive optical element for angle separation and combination of spectral components of laser pulses, an actuator for setting a dispersion of the pulse modification device by influencing the spectral components of the laser pulses, at least one passive sensor having an output variable dependent on at least one ambient parameter, and a passive converter for converting a change of the output variable of the at least one passive sensor into a manipulated variable change of the actuator in order to compensate for an alteration of the dispersion of the pulse modification apparatus resulted from an alteration of the at least one ambient parameter.
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公开(公告)号：US20240142785A1
公开(公告)日：2024-05-02
申请号：US18409855
申请日：2024-01-11
CPC分类号： G02B27/0916 , G02B27/0972 , G02B27/286
摘要： A device for beam shaping of a laser beam includes a prism, a polarization rotator, and a thin-film polarizer. The prism is configured to split an incident laser beam into a first beam half and a second beam half. The first beam half is input coupled into the prism. The first beam half enters the prism at a first incidence side arranged at the Brewster angle vis-à-vis the incident laser beam. The first beam half input coupled into the prism is output coupled from the prism at an exit side of the prism at the Brewster angle. The thin-film polarizer is traversed by the first beam half output coupled from the prism. The polarization rotator rotates a polarization of the second beam half. The second beam half is reflected by the thin-film polarizer. The thin-film polarizer superimposes the first beam half and the second beam half.
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公开(公告)号：US11951564B2
公开(公告)日：2024-04-09
申请号：US17292500
申请日：2019-11-06
IPC分类号： G01B9/02 , B23K26/03 , B23K26/044 , B23K26/046 , B23K26/082 , B23K26/242 , G01B9/02091 , G01B11/00 , G01B21/04
CPC分类号： B23K26/082 , B23K26/032 , B23K26/044 , B23K26/046 , B23K26/242 , G01B9/02091 , G01B11/002 , G01B21/045
摘要： A method determines translational and/or rotational deviations between the measurement coordinate system of a measurement mirror scanner and the processing coordinate system of a processing mirror scanner. A measurement beam reflected at a workpiece returns on a path of an incident measurement beam and is captured by a spatially resolving measurement sensor to ascertain spatially resolving information of the workpiece. The reflected measurement beam, in a sensor image of the measurement sensor, is imaged onto a previously known image position. This is accomplished by ascertaining a focal position deviation of the processing beam by scanning with the processing beam, evaluating a laser power detected at grid points, fixing the processing mirror scanner, capturing spatially resolving height information of the pinhole diaphragm by the measurement sensor, and determining a translational deviation between the processing and measurement coordinate systems based on the deviation.
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公开(公告)号：US11796720B2
公开(公告)日：2023-10-24
申请号：US17149763
申请日：2021-01-15
申请人： TRUMPF Laser GmbH
发明人： Christoph Tillkorn , Daniel Flamm , Florian Jansen , Torsten Beck , Hans-Juergen Otto , Julian Hellstern , Andreas Heimes , Maike Prossotowicz
CPC分类号： G02B3/0037 , G02B3/04 , G02B27/123 , G02B27/30
摘要： An apparatus for combining a plurality of coherent laser beams includes at least N−1 phase setting devices configured to set a respective phase (δφn) of a respective one of the plurality of coherent laser beams, and a beam combination device configured to combine the plurality of coherent laser beams to form at least one combined laser beam. The beam combination device includes a microlens arrangement having at least two microlens arrays configured to form the at least one combined laser beam.
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130.发明公开公开(公告)号：US20230335968A1
公开(公告)日：2023-10-19
申请号：US18337053
申请日：2023-06-19
申请人： TRUMPF Laser GmbH
发明人： Florian Graf , Aleksander Budnicki
CPC分类号： H01S3/06791 , H01S3/0675 , H01S3/08013
摘要： A passively mode-coupled fiber oscillator includes a bidirectional loop, a unidirectional loop, and a 3×3 coupler. The bidirectional loop and the unidirectional loop are coupled to each other by the 3×3 coupler. The bidirectional loop includes a first amplifying fiber. The fiber oscillator has overall a normal dispersion.
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