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    FIBER LASER SYSTEM CONFIGURED TO CONTROLLABY ALIGN BEAM
    42.
    发明公开
    FIBER LASER SYSTEM CONFIGURED TO CONTROLLABY ALIGN BEAM 有权
    FÜRSTEUERBARE STRAHUSRICHUNG KONFIGURIERTES FASERLASERSYSTEM

    公开(公告)号：EP2630706A4

    公开(公告)日：2017-06-21

    申请号：EP11796200

    申请日：2011-06-09

    Applicant: IPG PHOTONICS CORP

    Inventor： GAPONTSEV VALENTIN ,  FOMIN VALENTIN

    IPC: H01S3/067

    CPC classification number: H01S3/005 ,  B23K26/043 ,  B23K26/066 ,  B23K26/705 ,  G02B6/4225 ,  G02B6/4296 ,  H01S3/067

    Abstract: The present disclosure relates to a modular fiber laser system operative to controllably guide a beam which is launched from a feeding fiber into a process fiber so that the high-aperture component is coupled and guided in cladding of the process fiber, and a low-aperture component is coupled into the core of the fiber. The laser system further has a reflective element configured with light-reflecting and light-transmitting portions. The high-aperture component at least partially decouples from the cladding into the core so that the core radiates the high-aperture and low-aperture components. The high-aperture component is incident upon the light-reflecting portion and backreflected into the process fiber so that a sensor array, which is located between the feeding and process fibers, detects the reflected light. The laser system further includes an adjustment system operatively connected to the sensor array and configured to displace the fibers relative to one another to an alignment position after the sensor array detects a maximum signal of the reflected high-aperture component.

    Abstract translation: 本公开涉及一种模块化光纤激光器系统，其可操作地可控制地引导从馈送光纤发射的光束进入处理光纤，使得高光阑部件在处理光纤的包层中耦合和引导，并且低孔径 组件耦合到光纤的芯中。 激光系统还具有配置有光反射和透光部分的反射元件。 高孔径部件至少部分地从包层分离到芯部中，使得芯部辐射高孔径部件和低孔径部件。 高孔径部件入射到光反射部分并被反射到处理光纤中，使得位于馈送和处理光纤之间的传感器阵列检测反射光。 所述激光系统还包括调节系统，所述调节系统可操作地连接至所述传感器阵列并且被配置成在所述传感器阵列检测到所述反射的高孔径分量的最大信号之后将所述光纤相对于彼此移位至对准位置。

    HAND MANEUVERABLE LASER WELDING GUN
    43.
    发明公开
    HAND MANEUVERABLE LASER WELDING GUN 有权
    HANDMANÖVRIERBARELASERSCHWEISSPISTOLE

    公开(公告)号：EP2908979A4

    公开(公告)日：2016-07-27

    申请号：EP13847453

    申请日：2013-10-21

    Applicant: IPG PHOTONICS CORP ,  VOLKSWAGEN AG

    Inventor： FOMIN VALENTIN ,  STAROVOYTOV ANTON ,  ABRAMOV ANDREY ,  GAPONTSEV VALENTIN ,  FUCHS ARTJOM ,  SCHRAMM INGO ,  SCHERBAKOV EUGENE ,  MAMEROW HOLGER ,  MICHALZIK ANDREAS

    IPC: B23K26/24 ,  B23K26/00 ,  B23K26/03 ,  B23K26/082 ,  B23K26/14 ,  B23K26/142 ,  B23K26/22 ,  B23K26/70

    CPC classification number: B23K26/0096 ,  B23K26/032 ,  B23K26/082 ,  B23K26/142 ,  B23K26/1476 ,  B23K26/22 ,  B23K26/24 ,  B23K26/705

    Abstract: A hand displaceable laser welding gun is configured with an elongated support column extending along a longitudinal axis and made from lightweight material. A support plate is displaceably mounted to the column while supporting thereon an optical head axially which is provided with optics. The optics is configured to direct a laser beam along a path towards a welding zone through a protective window of the optical head. The laser welding gun further is structured with a first arm mounted to the support plate and extending along a longitudinal axis of the gun diametrically opposite to the optical head. The inner surface of the displaceable arm has an inner surface defining a tunnel which is aligned with the optical head and axially traversed by the laser beam, a first axially flowing stream of pressurized gaseous medium, and a second axially flowing stream of gaseous medium. The second stream, entering the tunnel at a pressure lower than that one of the first stream in response to a pressure gradient generated in the column, does not generate vortexes within the column. The first and second streams exit through the downstream end of the tunnel next to the welding zone. As the streams flow out, they carry out welding debris flowing within the tunnel to the optical head.

    Abstract translation: 手可移动激光焊枪配置有沿着纵向轴线延伸并由轻质材料制成的细长支撑柱。 支撑板可移动地安装到柱上，同时在其上轴向地支撑设置有光学元件的光学头。 光学器件被配置为沿着通过光学头的保护窗口的焊接区域的路径引导激光束。 激光焊枪还具有安装到支撑板并沿着与光学头直径相对的枪的纵向轴线延伸的第一臂。 可移动臂的内表面具有限定隧道的内表面，其与光学头对准并且被激光束轴向穿过，第一轴向流动的加压气体介质流和第二轴向流动的气体介质流。 响应于塔中产生的压力梯度，第二流以比第一流低的压力进入隧道，不会在塔内产生涡流。 第一和第二物流通过邻近焊接区的隧道的下游端部流出。 当流流出时，它们将在隧道内流动的焊接碎屑传送到光学头。

    MULTIMODE FIBER
    48.
    发明公开
    MULTIMODE FIBER 审中-公开
    多模光纤

    公开(公告)号：EP2478398A4

    公开(公告)日：2016-02-17

    申请号：EP10815990

    申请日：2010-09-08

    Applicant: IPG PHOTONICS CORP

    Inventor： GAPONTSEV VALENTIN ,  VYATKIN MICHAEL ,  FOMIN VALENTIN ,  PLATANOV NIKOLAI

    IPC: G02B6/036 ,  G02B6/14 ,  H01S3/067

    CPC classification number: H01S3/06729 ,  G02B6/03611 ,  G02B6/14 ,  H01S3/0672 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/094007

    Abstract: A monolithic fiber is configured with a double bottleneck-shaped multimode (MM) core capable of supporting substantially only a fundamental mode at a given wavelength and having opposite end regions, frustoconically shaped transformer regions, which run inwards from the respective end regions, and a central uniformly dimensioned region, which bridges the transformer regions. The MM core has a refractive step-index profile which is configured with a centrally positioned dip having a variable width along the length of the fiber. The width of the dip is relatively small at the end regions of the MM core so as to support only the fundamental mode with a Gaussian profile. As the dip becomes larger along the input transformer region, it gradually shapes the Gaussian profile into the ring profile of the fundamental mode, which is guided along the central region of the MM core. The dip gradually becomes smaller along the output transition region so as to shape the ring profile back into the substantially Gaussian profile of the fundamental mode radiated from the output end region of the MM core. The refractive index profile has a ring area doped with one or more rare-earth elements and configured to amplify substantially only the fundamental mode.

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