公开(公告)号：US11886052B2

公开(公告)日：2024-01-30

申请号：US16921531

申请日：2020-07-06

Applicant: nLIGHT, Inc.

Inventor： Dahv A. V. Kliner ,  Roger Farrow

IPC: G02F1/01 ,  G02B6/036 ,  G02B6/14 ,  B23K26/064 ,  B23K26/073 ,  G02B27/09 ,  B23K26/067 ,  B23K26/38 ,  B23K26/21 ,  B22F3/11 ,  B22F3/24 ,  B23K26/03 ,  G02B6/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B29C48/08 ,  G02B6/42 ,  B23K26/062 ,  B23K26/70 ,  B29C64/264 ,  B29C64/153 ,  H01S5/00 ,  B22F10/20 ,  B22F10/31 ,  B22F10/36 ,  G02B6/255 ,  G02B26/10 ,  G02B6/028 ,  G02F1/015 ,  B22F12/44 ,  B22F12/49 ,  G02B6/26 ,  G02B6/12

CPC classification number: G02F1/0115 ,  B22F3/1109 ,  B22F3/24 ,  B22F10/20 ,  B22F10/31 ,  B22F10/36 ,  B23K26/032 ,  B23K26/034 ,  B23K26/0342 ,  B23K26/062 ,  B23K26/064 ,  B23K26/067 ,  B23K26/073 ,  B23K26/21 ,  B23K26/342 ,  B23K26/38 ,  B23K26/704 ,  B29C48/08 ,  B29C64/153 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B6/02 ,  G02B6/021 ,  G02B6/023 ,  G02B6/02042 ,  G02B6/02347 ,  G02B6/02371 ,  G02B6/02395 ,  G02B6/036 ,  G02B6/03611 ,  G02B6/03694 ,  G02B6/14 ,  G02B6/255 ,  G02B6/4203 ,  G02B6/4206 ,  G02B27/0927 ,  G02B27/0933 ,  G02B27/0994 ,  H01S5/0085 ,  B22F12/44 ,  B22F12/49 ,  G02B6/02004 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/0365 ,  G02B6/03616 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03688 ,  G02B6/262 ,  G02B6/4296 ,  G02B26/101 ,  G02B2006/12121 ,  G02F1/0151

Abstract: 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.

公开(公告)号：US11831121B2

公开(公告)日：2023-11-28

申请号：US17788677

申请日：2021-01-28

Applicant: NLIGHT, INC.

Inventor： Juan Carlos Lugo ,  Teemu Kokki ,  Roger Farrow ,  Dahv A. V. Kliner

IPC: G02B6/255 ,  H01S3/067 ,  H01S3/00

CPC classification number: H01S3/0064 ,  H01S3/06704

Abstract: 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：US10690928B2

公开(公告)日：2020-06-23

申请号：US15904861

申请日：2018-02-26

Applicant: nLIGHT, Inc.

Inventor： Scott Karlsen ,  Robert Martinsen ,  Dahv A. V. Kliner ,  Roger Farrow

IPC: G02B27/09 ,  B33Y30/00 ,  B23K26/06 ,  B23K26/073 ,  G02B6/26 ,  G02B6/42 ,  G02F1/01 ,  G02B6/028 ,  G02B6/036 ,  G02B6/14 ,  G02B6/255 ,  G02B6/12 ,  G02F1/015 ,  G02B6/02 ,  B22F3/105

Abstract: 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：US10663767B2

公开(公告)日：2020-05-26

申请号：US15607410

申请日：2017-05-26

Applicant: nLIGHT, Inc.

Inventor： Dahv A. V. Kliner ,  Roger Farrow

IPC: G02F1/01 ,  B23K26/067 ,  B23K26/38 ,  G02B6/14 ,  B23K26/21 ,  B22F3/105 ,  B22F3/11 ,  B22F3/24 ,  B23K26/03 ,  G02B6/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/342 ,  B23K26/064 ,  B23K26/073 ,  G02B6/42 ,  G02B6/255 ,  G02B27/09 ,  G02B6/036 ,  G02B26/10 ,  G02B6/26 ,  G02B6/12 ,  G02F1/015 ,  G02B6/028

Abstract: Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery device, comprising a first length of fiber comprising a first RIP formed to enable modification of one or more beam characteristics of an optical beam by a perturbation device and a second length of fiber having a second RIP coupled to the first length of fiber, the second RIP formed to confine at least a portion of the modified beam characteristics of the optical beam within one or more confinement regions.

公开(公告)号：US10661342B2

公开(公告)日：2020-05-26

申请号：US15939090

申请日：2018-03-28

Applicant: nLIGHT, Inc.

Inventor： Joona Koponen ,  Dahv A. V. Kliner ,  Roger Farrow

IPC: B22F3/10 ,  B22F3/105 ,  G02B27/09 ,  G02F1/01 ,  B33Y30/00 ,  B23K26/073 ,  B33Y10/00 ,  B23K26/08 ,  B23K26/342 ,  B23K26/144 ,  B23K26/14 ,  B23K26/082 ,  G02B6/14 ,  B29C64/153 ,  B29C64/268 ,  G02B6/028 ,  G02B6/42 ,  G02B6/12 ,  G02F1/015 ,  G02B6/26 ,  G02B6/036

Abstract: 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：US20180180803A1

公开(公告)日：2018-06-28

申请号：US15885563

申请日：2018-01-31

Applicant: nLIGHT, Inc.

Inventor： Brian Victor ,  Robert Martinsen ,  Lynn Sheehan ,  Dahv A.V. Kliner ,  Roger Farrow

IPC: G02B6/036 ,  G02B6/02 ,  G02B6/42 ,  B29C47/00

CPC classification number: G02B6/03611 ,  B23K26/032 ,  B23K26/034 ,  B23K26/0342 ,  B23K26/21 ,  B23K26/342 ,  B29C48/08 ,  G02B6/021 ,  G02B6/02347 ,  G02B6/02371 ,  G02B6/02395 ,  G02B6/0288 ,  G02B6/03616 ,  G02B6/262 ,  G02B6/4203

Abstract: A method for forming an article includes providing a material having a first material property; forming a melt pool by exposing the material to an optical beam having at least one beam characteristic, wherein the melt pool has at least one melt pool property determinative of a second material property of the material; and modifying the at least one beam characteristic in response to a change in the melt pool property.

公开(公告)号：US20180161873A1

公开(公告)日：2018-06-14

申请号：US15882870

申请日：2018-01-29

Applicant: nLIGHT, Inc.

Inventor： Aaron Brown ,  Keith Kennedy ,  David Dawson ,  Robert Martinsen ,  Roger Farrow ,  Dahv A. V. Kliner

IPC: B22F3/105 ,  G03F7/00

CPC classification number: B22F3/1055 ,  B22F2998/10 ,  B22F2999/00 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00 ,  G03F7/0037 ,  B22F2003/248 ,  B22F2207/11 ,  B22F2203/11

Abstract: A method of making a three-dimensional object. The method comprises: a) positioning a layer of particles over a build plate; b) exposing the layer of particles to a first laser beam having a first set of beam characteristics, thereby heating the layer sufficiently to fuse at least a portion of the particles together to form a build layer; c) exposing a first region of one of i) the layer of particles or ii) the build layer to a second laser beam having a second set of beam characteristics to provide a first temperature profile for the first region; and d) exposing a second region of one of i) the layer of particles or ii) the build layer to a third laser beam having a third set of beam characteristics to provide a second temperature profile for the second region, the second temperature profile being different than the first temperature profile, wherein both the first region and the second region are in the layer of particles or both the first region and the second region are in the build layer.

公开(公告)号：US20230275389A1

公开(公告)日：2023-08-31

申请号：US18016050

申请日：2021-07-14

Applicant: nLIGHT, INC.

Inventor： Christopher Luetjen ,  Roger Farrow

IPC: H01S3/067

CPC classification number: H01S3/06729

Abstract: Optical fiber structures for generating a single mode, saddle shaped output beam include first and second lengths of fiber. The first length of fiber has a first input end configured to receive a single mode gaussian beam. The second length of fiber has a second input end coupled to an output end of the first length of fiber. The second length of fiber includes a centrally located anti-guiding core and an annular guiding region coaxially encompassing the centrally located anti-guiding core.

公开(公告)号：US10673197B2

公开(公告)日：2020-06-02

申请号：US15924096

申请日：2018-03-16

Applicant: NLIGHT, INC.

Inventor： Dahv A. V. Kliner ,  Roger Farrow

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/115 ,  H01S3/11 ,  H01S3/0941 ,  H01S3/121 ,  G02B6/02 ,  G02B6/26 ,  G02B6/255 ,  G02B6/028 ,  G02B6/28 ,  H01S3/106 ,  H01S3/102

Abstract: Methods, apparatus, and systems for modulation of a laser beam. An optical modulator may comprise an optical input to receive an optical beam, and one or more lengths of fiber between the optical input and an optical output. At least one of the lengths of fiber comprises a confinement region that is optically coupled to the output. The optical modulator may further comprise a perturbation device to modulate, through action upon the one or more lengths of fiber, a transmittance of the beam through the confinement region from a first transmittance level at a first time instance to a second transmittance level at a second time instance. The optical modulator may further comprise a controller input coupled to the perturbation device, wherein the perturbation device is to act upon the one or more lengths of fiber in response to a control signal received through the controller input.

公开(公告)号：US10663742B2

公开(公告)日：2020-05-26

申请号：US15906728

申请日：2018-02-27

Applicant: nLIGHT, Inc.

Inventor： Ken Gross ,  Scott Karlsen ,  Dahv A. V. Kliner ,  Roger Farrow

IPC: G02B27/09 ,  H01S3/067 ,  G02B6/028 ,  B23K26/06 ,  G02B6/255 ,  B23K26/073 ,  G02B6/036 ,  B23K26/57 ,  B23K26/064 ,  B23K26/062 ,  G02B6/14 ,  B23K26/38 ,  H01S3/00 ,  G02B6/26

Abstract: 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.