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公开(公告)号：US20200292765A1
公开(公告)日：2020-09-17
申请号：US16817357
申请日：2020-03-12
Applicant: NLIGHT, INC.
Abstract: Some embodiments may include a method of generating assessment data in a system including a galvanometric scanning system (GSS) having a laser device to generate a laser beam and an X-Y scan head module to position the laser beam on a work piece. The method may include selecting a dimension based on a desired accuracy for validation (and/or a characteristic of an imaging system in embodiments that utilize an imaging system). The method may include commanding the GSS to draw a mark based on a polygon or ellipse of the selected dimension around a predetermined target point associated with the work piece to generate assessment data, and following operation of the GSS based on said commanding, validating a calibration of the GSS using the assessment data (or an image thereof in embodiments that utilize an imaging system). Other embodiments may be disclosed and/or claimed.
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公开(公告)号：US10730785B2
公开(公告)日：2020-08-04
申请号：US15938959
申请日：2018-03-28
Applicant: nLIGHT, Inc.
Inventor： Aaron Brown , Aaron Ludwig Hodges , Dahv A. V. Kliner
Abstract: Fiber bending mechanisms vary beam characteristics by deflecting or bending one or more fibers, by urging portions of one or more fibers toward a fiber shaping surface having a selectable curvature, or by selecting a fiber length that is to be urged toward the fiber shaping surface. In some examples, a fiber is secured to a flexible plate to conform to a variable curvature of the flexible plate. In other examples, a variable length of a fiber is pulled or pushed toward a fiber shaping surface, and the length of the fiber or a curvature of the flexible plate provide modification of fiber beam characteristics.
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公开(公告)号：US10682726B2
公开(公告)日：2020-06-16
申请号：US15938925
申请日：2018-03-28
Applicant: nLIGHT, Inc.
Inventor： Ken Gross , Dahv A. V. Kliner , Roger Farrow
IPC: B23K26/06 , G02B27/09 , B23K26/067 , B23K26/073 , B23K26/064 , G02B6/14 , G02B6/036 , G02B6/028 , G02B6/42 , G02B6/26
Abstract: 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.
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公开(公告)号：US10673199B2
公开(公告)日：2020-06-02
申请号：US15924090
申请日：2018-03-16
Applicant: NLIGHT, INC.
Inventor： Dahv A. V. Kliner
IPC: H01S3/13 , H01S3/067 , H01S3/11 , H01S3/0941 , H01S3/115 , H01S3/094 , G02B6/02 , G02F1/35 , H01S3/121 , G02B6/28 , G02B6/255 , G02B6/028 , G02B6/26 , H01S3/102 , H01S3/106
Abstract: Methods, apparatus, and systems for active saturable absorbance of an optical beam. An active saturable absorber 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 active saturable absorber may further comprise an optical detector to sense a characteristic of the optical beam, such as power. The active saturable absorber may further comprise a perturbation device to modulate, through action upon the one or more lengths of fiber, a transmittance of the beam through a fiber confinement region from a lower transmittance level to a higher transmittance level based on an indication of the characteristic sensed while the transmittance level is low.
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公开(公告)号：US10663768B2
公开(公告)日：2020-05-26
申请号：US15939138
申请日：2018-03-28
Applicant: nLIGHT, Inc.
Inventor： Robert J. Martinsen , Dahv A. V. Kliner , Roger L. Farrow
IPC: G02F1/01 , B23K26/064 , B23K26/067 , G02B27/09 , G02B6/14 , G02B6/12 , G02B6/036 , G02B6/26 , G02B6/42 , G02B6/028
Abstract: An optical beam delivery device is configured to generate, from an optical beam, selectable intensity profiles. The device has a first length of fiber having a first refractive index profile (RIP), and a second length of fiber having second RIP that is different from the first RIP. The second length of fiber includes coaxial confinement regions arranged to confine at least a portion of an adjusted optical beam. The confined portion corresponds to an intensity distribution of different intensity distributions. The intensity distribution is established by a corresponding state of different states of perturbation that is applied to the device such that the confined portion is configured to provide, at an output of the second length of fiber, a selected intensity profile of the selectable intensity profiles.
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Patent Agency Ranking
公开(公告)号：US10661391B2
公开(公告)日：2020-05-26
申请号：US15882292
申请日：2018-01-29
Applicant: nLIGHT, Inc.
Inventor： Aaron Brown , Brian Victor , Robert Martinsen , Dahv A. V. Kliner , Roger Farrow
IPC: B23K26/34 , B23K26/342 , H01S3/105 , H01S3/23 , B22F3/105 , B22F3/24 , B33Y10/00 , B23K26/082 , B23K26/046 , B23K26/06 , B23K26/073 , H01S3/067 , B23K26/144 , G02B6/255 , B22F3/11 , H01S3/00 , G02B6/26 , B33Y80/00 , H01S3/16 , B23K103/00 , G02B6/02 , H01S3/106
Abstract: A method of making a porous three-dimensional object. The method comprises: a) positioning a first layer of particles on a build plate; b) heating the first layer of particles sufficiently to fuse the particles together to form a first build layer having a first porosity; c) exposing the first build layer to a laser beam to form one or more pores, the exposed first build layer having a first modified porosity, the laser beam being emitted from an optical fiber; d) adjusting one or more beam characteristics of the laser beam prior to or during the exposing of the first build layer, the adjusting of the laser beam occurring prior to the laser beam being emitted from the optical fiber; e) positioning an additional layer of particles on the exposed first build layer; f) heating the additional layer of particles sufficiently to fuse the particles together to form a second build layer having a second porosity; g) exposing the second build layer to the laser beam to form one or more pores, the exposed second build layer having a second modified porosity, the laser beam being emitted from the optical fiber; h) adjusting one or more beam characteristics of the laser beam after fusing the particles to form the second build layer and prior to or during the exposing of the second build layer, the adjusting of the laser beam occurring prior to the laser beam being emitted from the optical fiber, and i) repeating e), f), optionally g) and optionally h) to form a three-dimensional object.
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公开(公告)号：US20200161515A1
公开(公告)日：2020-05-21
申请号：US16192696
申请日：2018-11-15
Applicant: nLIGHT, Inc.
Inventor： David Martin Hemenway
Abstract: A high-power laser diode assembly uses a greater number of emitters in a laser diode package or uses larger, wider laser diode emitters to produce higher-power laser output. Each assembly design option includes a meniscus slow axis collimator lens having a light entrance surface imparting strong negative lens surface power to diverge an incident beam outwards and a light exit surface imparting even stronger positive lens surface power to collimate the rapidly diverging beam. In one example, a 5 mm focal length meniscus collimator lens, as compared to a standard 12 mm focal length collimator lens, can reduce by 7 mm the physical path from the collimator lens to the laser diode. In another example, a 15 mm focal length meniscus collimator lens with the same back focal length as that of a standard 12 mm collimator facilitates increasing chip-on-submount width from 200 μm to 250 μm.
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公开(公告)号：US20200147719A1
公开(公告)日：2020-05-14
申请号：US16745242
申请日：2020-01-16
Applicant: nLIGHT, Inc.
Inventor： Scott R. Karlsen , Robert J. Martinsen
IPC: B23K26/03
Abstract: A scanned optical beam is divided so as to form a set of scanned subbeams. To compensate for scan errors, a portion of at least one subbeam is detected and a scan error estimated based on the detected portion. A beam scanner is controlled according to the estimated error so as to adjust a propagation direction of some or all of the set of scanned subbeams. The scanned subbeams with adjusted propagation directions are received by an f-theta lens and directed to a work piece. In typical examples, the portion of the at least one subbeam that is detected is obtained from the set of scanned subbeams prior to incidence of the scanned subbeams to the f-theta lens.
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公开(公告)号：US10651355B1
公开(公告)日：2020-05-12
申请号：US16192696
申请日：2018-11-15
Applicant: nLIGHT, Inc.
Inventor： David Martin Hemenway
Abstract: A high-power laser diode assembly uses a greater number of emitters in a laser diode package or uses larger, wider laser diode emitters to produce higher-power laser output. Each assembly design option includes a meniscus slow axis collimator lens having a light entrance surface imparting strong negative lens surface power to diverge an incident beam outwards and a light exit surface imparting even stronger positive lens surface power to collimate the rapidly diverging beam. In one example, a 5 mm focal length meniscus collimator lens, as compared to a standard 12 mm focal length collimator lens, can reduce by 7 mm the physical path from the collimator lens to the laser diode. In another example, a 15 mm focal length meniscus collimator lens with the same back focal length as that of a standard 12 mm collimator facilitates increasing chip-on-submount width from 200 μm to 250 μm.
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公开(公告)号：US10574020B2
公开(公告)日：2020-02-25
申请号：US15842441
申请日：2017-12-14
Applicant: NLIGHT, INC.
Inventor： Aaron Ludwig Hodges , Mitchell Ryan Reynolds
Abstract: A packaged fiber laser may include a wound fiber laser spiral including a metal ribbon having ends, surfaces, and edges; a fiber laser on a first one of the surfaces of the metal ribbon; and a metal sheet coupled to a first one of the edges of the metal ribbon or a second one of the surfaces of the metal ribbon. Packaging for a fiber laser may include a cooling plate coupled to a second one of the edges of the metal ribbon or the second surface of the metal ribbon, the cooling plate including: a casing including a cover, a bottom, and an outer sidewall; flow channels formed inside the casing, the flow channels defined by inner sidewalls of the cooling plate, wherein the cover is coupled to a top of the inner sidewalls to enclose the flow channel; and an inlet to deliver coolant to the flow channels.
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