公开(公告)号：US20180180896A1

公开(公告)日：2018-06-28

申请号：US15904861

申请日：2018-02-26

申请人： nLIGHT, Inc.

发明人： Scott KARLSEN ,  Robert MARTINSEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： G02B27/09 ,  G02F1/01 ,  B23K26/06 ,  B23K26/073 ,  G02B6/028 ,  G02B6/036 ,  G02B6/14 ,  G02B6/255 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B27/0994 ,  B22F2003/1056 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/073 ,  B33Y30/00 ,  G02B6/02076 ,  G02B6/02147 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/14 ,  G02B6/255 ,  G02B6/262 ,  G02B6/4206 ,  G02B6/4296 ,  G02B27/0927 ,  G02B27/0933 ,  G02B2006/12121 ,  G02F1/0115 ,  G02F2001/0151

摘要： An apparatus for heat deposition in additive manufacturing may include: a first optical beam source configured to generate a first optical beam; a second optical beam source configured to generate a second optical beam; and/or an optical system. The optical system may be configured to move the generated first optical beam over a target area. The optical system may be further configured to move the generated second optical beam over the target area so that a path of the second optical beam moving over the target area is dithered about a path of the first optical beam moving over the target area.The optical system may be configured to focus the generated first optical beam at a plane of a target area. The optical system may be further configured to focus the generated second optical beam at the plane of the target area.

公开(公告)号：US20180180813A1

公开(公告)日：2018-06-28

申请号：US15883480

申请日：2018-01-30

申请人： nLIGHT, Inc.

发明人： Ken GROSS ,  Brian VICTOR ,  Robert MARTINSEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： G02B6/26 ,  B23K26/70 ,  B23K26/073 ,  B23K26/062 ,  B29C64/153 ,  B29C64/264

CPC分类号： G02B6/262 ,  B23K26/062 ,  B23K26/073 ,  B23K26/704 ,  B29C64/153 ,  B29C64/264 ,  G02B6/02042 ,  G02B6/023 ,  G02B6/036 ,  G02B6/03694

摘要： A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first RIP may differ from the second RIP.

公开(公告)号：US20230359051A1

公开(公告)日：2023-11-09

申请号：US17777248

申请日：2020-11-19

申请人： NLIGHT, INC

发明人： Jay SMALL ,  Shuang LI ,  Dahv A.V. KLINER

IPC分类号： G02B27/09 ,  G02B6/028 ,  G02B6/42 ,  C03B37/027

CPC分类号： G02B27/0994 ,  C03B37/02745 ,  G02B6/0286 ,  G02B6/4206 ,  C03B2203/26

摘要： Angularly homogenizing gradient index optical fiber having a refractive index profile that is non-quadratic to a degree sufficient to enhance precession of light as it is propagated through the fiber. Deviation from the quadratic may be limited to avoid profoundly changing the radial boundary within the fiber. Beam asymmetry, for example, associated with small aperture sources launched into a fiber off axis, may be made more symmetric as the beam is propagated through the homogenizing gradient index optical fiber. A refractive index profile may be manufactured to avoid a pure quadratic profile, or a fiber having a refractive index profile that is quadratic in only some orientations about the fiber axis may be twisted during draw to induce a refractive index profile path that enhances propagation precession.

公开(公告)号：US20180281108A1

公开(公告)日：2018-10-04

申请号：US15939234

申请日：2018-03-28

申请人： nLIGHT, Inc.

发明人： Brian VICTOR ,  Christopher RIVERA ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： B23K26/073 ,  H01S3/067 ,  B23K26/06 ,  G02F1/01 ,  G02B6/26 ,  G02B27/09 ,  G02B6/028 ,  G02B6/42 ,  G02B6/255 ,  G02B6/036 ,  B23K26/21

摘要： An optical beam delivery device includes: a first length of fiber having a first refractive index profile (RIP) to enable modification of one or more beam characteristics of an optical beam having a first beam shape; an a second length of fiber having at least one beam-shaping confinement region and situated to receive the optical beam from the first length of fiber, wherein the at least one beam shape-modifying confinement region has a quadrilateral cross-section.

公开(公告)号：US20180214980A1

公开(公告)日：2018-08-02

申请号：US15938925

申请日：2018-03-28

申请人： nLIGHT, Inc.

发明人： Ken GROSS ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： B23K26/06 ,  G02B27/09 ,  G02B6/028 ,  G02B6/036

CPC分类号： B23K26/0648 ,  B23K26/064 ,  B23K26/0643 ,  B23K26/067 ,  B23K26/073 ,  G02B6/0281 ,  G02B6/03616 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/0365 ,  G02B6/03688 ,  G02B6/14 ,  G02B6/262 ,  G02B6/4296 ,  G02B27/0927 ,  G02B27/0955 ,  G02B27/0972 ,  G02B27/0994

摘要： An optical beam delivery device. The device comprises a first length of fiber comprising a first RIP formed to enable the adjusting of one or more beam characteristics of an optical beam by a perturbation device. The optical beam delivery device further comprises a second length of fiber having a proximal end for receiving the optical beam from the first length of fiber and a distal end. The proximal end is coupled to the first length of fiber. The second length of fiber comprises a second RIP formed to confine at least a portion of the optical beam within one or more confinement regions. A beam modification structure is disposed at, or a distance from, the distal end of the second length of fiber. The beam modification structure is configured to modify at least one property of the optical beam chosen from beam divergence properties, beam spatial properties and beam directional characteristics.

公开(公告)号：US20180214950A1

公开(公告)日：2018-08-02

申请号：US15936780

申请日：2018-03-27

申请人： nLIGHT, Inc.

发明人： Scott KARLSEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： B22F3/105 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/03 ,  B23K26/06 ,  B23K26/073 ,  B23K26/08 ,  B23K26/342 ,  B23K26/60 ,  H01S5/00 ,  G02B27/30 ,  H01S5/022

CPC分类号： B22F3/1055 ,  B22F2003/1057 ,  B22F2999/00 ,  B23K26/034 ,  B23K26/0604 ,  B23K26/0622 ,  B23K26/0626 ,  B23K26/0648 ,  B23K26/073 ,  B23K26/08 ,  B23K26/082 ,  B23K26/0876 ,  B23K26/342 ,  B23K26/60 ,  B29C64/153 ,  B29C64/268 ,  B33Y30/00 ,  B33Y50/02 ,  G02B27/0927 ,  G02B27/0961 ,  G02B27/30 ,  H01S5/0085 ,  H01S5/02284 ,  B22F2203/11

摘要： An apparatus for temperature control in additive manufacturing may include: an optical beam source configured to generate one or more optical beams; a homogenizer configured to flatten an irradiance profile of the generated one or more optical beams; and/or an optical system configured to form the generated one or more optical beams so as to match a portion of a shape of a powder bed. The apparatus may include optical beam sources configured to generate two or more optical beams; and/or an optical system configured to form the generated two or more optical beams to match the portion of the shape of the powder bed. The apparatus, using the formed one or more optical beams with the flattened irradiance profile or using the formed two or more optical beams, may be configured to pre-heat the powder bed prior to fusing and/or to post-heat the fused powder bed.

公开(公告)号：US20230036091A1

公开(公告)日：2023-02-02

申请号：US17788677

申请日：2021-01-28

申请人： NLIGHT, INC.

发明人： Juan Carlos LUGO ,  Teemu KOKKI ,  Roger FARROW ,  Dahv A.V. KLINER

IPC分类号： H01S3/00 ,  H01S3/067

摘要： Some embodiments may include a fiber laser including two or more input fibers and an output fiber to deliver a beam to a workpiece, the fiber laser comprising. The fiber laser may include a combiner having ends and a length, wherein the combiner is arranged to release, from its length, a portion of back-reflected light received from the output fiber at an output end of the ends from the combiner, the combiner including: a capillary tube to enclose part of the two or more input fibers at an input end of the ends of the combiner, the capillary tube having ends and a length located between the ends of the capillary tube; and a cladding light stripper (CLS) defined by part of the length of the capillary tube, wherein the CLS provides the release of the portion of the back-reflected light. Other embodiments may be disclosed and/or claimed.

公开(公告)号：US20220404648A1

公开(公告)日：2022-12-22

申请号：US17854933

申请日：2022-06-30

申请人： NLIGHT, INC.

发明人： Ken GROSS ,  Brian VICTOR ,  Robert J. MARTINSEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： G02F1/01 ,  B23K26/067 ,  B23K26/38 ,  G02B6/14 ,  B23K26/21 ,  B22F3/11 ,  B22F3/24 ,  B23K26/03 ,  G02B6/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B29C48/08 ,  G02B6/036 ,  G02B6/42 ,  B23K26/062 ,  B23K26/70 ,  B29C64/264 ,  B29C64/153 ,  H01S5/00 ,  B22F12/00 ,  B23K26/064 ,  B23K26/073 ,  G02B6/255 ,  G02B27/09

摘要： A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first RIP may differ from the second RIP.

公开(公告)号：US20180214951A1

公开(公告)日：2018-08-02

申请号：US15939090

申请日：2018-03-28

申请人： nLIGHT, Inc.

发明人： Joona KOPONEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： B22F3/105 ,  G02B27/09 ,  G02F1/01 ,  G02B6/028 ,  G02B6/26 ,  G02B6/42 ,  B23K26/073

摘要： Additive manufacturing systems and methods for fabricating an article are provided. The additive manufacturing system may include a substrate and a layering device configured to fabricate a first layer of the article on the substrate. The layering device may include an optical beam source configured to generate an optical beam and a variable beam characteristics (VBC) fiber operably coupled with the optical beam source and configured to modify one or more beam characteristics, such as a wavelength, of the optical beam.

公开(公告)号：US20180188544A1

公开(公告)日：2018-07-05

申请号：US15906728

申请日：2018-02-27

申请人： nLIGHT, Inc.

发明人： Ken GROSS ,  Scott KARLSEN ,  Dahv A.V. KLINER ,  Roger FARROW

IPC分类号： G02B27/09 ,  H01S3/067 ,  B23K26/00 ,  G02B6/028 ,  G02B6/036 ,  G02B6/255 ,  H01S3/00 ,  B23K26/073 ,  B23K26/06

摘要： Disclosed herein are methods, apparatus, and systems for perturbing a laser beam propagating within a first length of fiber to adjust one or more beam characteristics of the laser beam in the first length of fiber or a second length of fiber or a combination thereof, coupling the perturbed laser beam into a second length of fiber and maintaining at least a portion of one or more adjusted beam characteristics within a second length of fiber having.