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1032 条记录 (耗时 0.03 秒)

    Weakening Device and Method for Weakening Packaging Materials
    53.
    发明申请
    Weakening Device and Method for Weakening Packaging Materials 审中-公开

    公开(公告)号：US20190321919A1

    公开(公告)日：2019-10-24

    申请号：US16464846

    申请日：2017-10-19

    申请人： SIG Technology AG

    发明人： Daniel Cappel ,  Gerhard Rempel ,  Jörg Steinfels

    IPC分类号： B23K26/364 ,  B23K26/03 ,  B23K26/067 ,  B23K26/082 ,  B23K26/08 ,  B23K26/14 ,  B23K26/16 ,  B23K26/402 ,  B31B50/25

    摘要： Described is a weakening device for weakening packaging materials having at least one laser unit comprising a laser having a laser beam and at least one transport device for transport of the packaging material relative to the laser unit. The laser unit has at least one focusing optics for focusing the laser beam on the packaging material transported relative to the laser. In order to be able to inscribe both straight lines of weakness and shapes included from lines, it is provided that the laser unit has at least one scanner for adjusting the laser beam at least in one direction transversely to the transport direction for inscribing predetermined shapes into the packaging material transported past the laser, and that a beam switch is provided in the path of the laser beam for transmitting the beam to the focusing optics in a liner position or to the scanner.

    ADJUSTABLE BEAM CHARACTERISTICS
    56.
    发明申请
    ADJUSTABLE BEAM CHARACTERISTICS 审中-公开

    公开(公告)号：US20190258091A1

    公开(公告)日：2019-08-22

    申请号：US16402147

    申请日：2019-05-02

    申请人： nLIGHT, Inc.

    发明人： Dahv A.V. Kliner ,  Roger Farrow

    IPC分类号： G02F1/01 ,  B22F3/105 ,  G02B27/09 ,  B22F3/11 ,  B22F3/24 ,  B23K26/03 ,  B23K26/064 ,  B23K26/067 ,  B23K26/073 ,  B23K26/21 ,  B23K26/342 ,  B23K26/38 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B6/02 ,  G02B6/14 ,  G02B6/42 ,  G02B6/255

    摘要： Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery system, comprising an optical fiber including a first length of fiber comprising a first RIP formed to enable, at least in part, modification of one or more beam characteristics of an optical beam by a perturbation assembly arranged to modify the one or more beam characteristics, the perturbation assembly coupled to the first length of fiber or integral with the first length of fiber, or a combination thereof and a second length of fiber coupled to the first length of fiber and having a second RIP formed to preserve at least a portion of the one or more beam characteristics of the optical beam modified by the perturbation assembly within one or more first confinement regions. The optical beam delivery system may include an optical system coupled to the second length of fiber including one or more free-space optics configured to receive and transmit an optical beam comprising the modified one or more beam characteristics.

    LASER MACHINING DEVICE WARNING OF ANOMALY IN EXTERNAL OPTICAL SYSTEM BEFORE LASER MACHINING
    57.
    发明申请
    LASER MACHINING DEVICE WARNING OF ANOMALY IN EXTERNAL OPTICAL SYSTEM BEFORE LASER MACHINING 审中-公开

    公开(公告)号：US20190160599A1

    公开(公告)日：2019-05-30

    申请号：US16191615

    申请日：2018-11-15

    申请人： FANUC CORPORATION

    发明人： Takashi Izumi

    IPC分类号： B23K26/70 ,  B23K26/06 ,  B23K26/067 ,  B23K26/60

    摘要： A laser machining device includes a reflective plate disposed perpendicular to the optical axis of emitting light and having a constant reflectance to the emitting light; a return light measurement unit which measures intensity distribution of return light reflected off the reflective plate and returning to the external optical system via a beam splitter; a storage unit which stores the return light intensity distribution in a normal state as reference data; a preprocessing unit which performs processing of identifying at least one of an optical axis shift, a beam diameter anomaly, a mode anomaly, a ghost, contamination of a protective window, and a focus shift due to thermal lens effect on the basis of comparison between measurement data of the return light intensity distribution and the reference data, before laser machining; and a warning unit which warns of an anomaly in the external optical system in accordance with the preprocessing unit.

    SENSOR SYSTEM FOR DIRECTLY CALIBRATING HIGH POWER DENSITY LASERS USED IN DIRECT METAL LASER MELTING
    60.
    发明申请
    SENSOR SYSTEM FOR DIRECTLY CALIBRATING HIGH POWER DENSITY LASERS USED IN DIRECT METAL LASER MELTING 审中-公开

    公开(公告)号：US20190015933A1

    公开(公告)日：2019-01-17

    申请号：US16032184

    申请日：2018-07-11

    申请人： 3D Systems, Inc.

    发明人： Sam Coeck

    IPC分类号： B23K26/354 ,  B23K26/04 ,  B23K26/70 ,  B23K26/064 ,  B23K26/067 ,  B23K26/06

    摘要： A three dimensional printing system includes a laser system, a beam splitter, a pinhole, a sensor, and a controller. The laser system emits a light beam of varying diameter carrying at least 100 watts of optical power along an optical path. The laser has an imaging plane along the optical path which can be coincident or close to a focal plane at which the beam has a minimum diameter. The beam splitter is positioned along the optical path to receive the beam and to transmit most of the optical power and to reflect remaining optical power. The pinhole is positioned along the optical path at the imaging plane to receive the reflected beam having a minimal diameter. The controller is configured to analyze a signal from the sensor to determine intensity and distribution parameters for the light beam.