公开(公告)号：US11979002B2

公开(公告)日：2024-05-07

申请号：US17093111

申请日：2020-11-09

申请人： nLIGHT, Inc.

发明人： Zhigang Chen ,  Manoj Kanskar ,  Shuang Li ,  Jim Zhang ,  Mark DeFranza ,  David Martin Hemenway ,  Eric Martin ,  Jay Small

IPC分类号： H01S5/40 ,  G02B6/42 ,  H01S5/02251

CPC分类号： H01S5/4075 ,  G02B6/4296 ,  H01S5/02251

摘要： Apparatus include a first laser diode situated to emit a beam from an exit facet along an optical axis, the beam as emitted having perpendicular fast and slow axes perpendicular to the optical axis, a first fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the first laser diode, a second laser diode situated to emit a beam from an exit facet of the second laser diode along an optical axis parallel to the optical axis of the first laser diode and with a slow axis in a common plane with the slow axis of the first laser diode, and a second fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet of the second laser diode and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the second laser diode.

公开(公告)号：US20240128707A1

公开(公告)日：2024-04-18

申请号：US18544304

申请日：2023-12-18

申请人： Liturex (Guangzhou) Co. Ltd.

发明人： Yunpeng Song

IPC分类号： H01S5/00 ,  G01S7/481 ,  G02B26/08 ,  H01S5/40

CPC分类号： H01S5/0071 ,  G01S7/4815 ,  G02B26/0833 ,  H01S5/4012 ,  H01S5/4075 ,  G02B19/0057

摘要： In one embodiment, described herein is an apparatus for projecting linear illumination fanned out along the slow axis of a laser source array. In addition to the laser source array, the apparatus can include a number of fast axis collimators (FACs) to collimate the laser beams from the laser source array along the fast axis, a cylinder lens array for converting the collimated laser beams to parallel laser beams, and a prism array pair for reducing the pitch of the parallel laser beams. The system further includes a first cylinder lens for focusing the laser beams from the prism array pair onto a MEMS mirror, which redirects the laser beams as a linear laser beam towards a predetermined direction.

公开(公告)号：US20240097407A1

公开(公告)日：2024-03-21

申请号：US18262794

申请日：2022-02-04

申请人： ams-OSRAM International GmbH

发明人： Tilman Rügheimer

IPC分类号： H01S5/40 ,  H01S5/02253

CPC分类号： H01S5/4093 ,  H01S5/02253 ,  H01S5/4012 ,  H01S5/4018 ,  H01S5/4075

摘要： The invention relates to a laser diode arrangement for a laser projection device, comprising a carrier; a laser diode array arranged on the carrier, comprising a first light group having a plurality of first laser diodes and a second light group having a plurality of second laser diodes, said first light emitting group emitting polarized electromagnetic radiation having a first polarization direction and said second light emitting group emitting polarized electromagnetic radiation having a second polarization direction, said first polarization direction and said second polarization direction being perpendicular to each other, the invention being characterized in that said first light emitting group comprises at least one first laser housing accommodating at least one first laser diode and said second light emitting group comprises at least one second laser housing accommodating at least one second laser diode; and the number of first laser diodes of the laser diode array is at least twice the number of second laser diodes, the first laser diodes and the second laser diodes having a corresponding maximum optical output power; and an electrical wiring for the laser diode array is applied on the carrier such that the current intensity at the first laser diodes is adjustable continuously and independently of the energization of the second laser diodes.

公开(公告)号：US20240030677A1

公开(公告)日：2024-01-25

申请号：US18355572

申请日：2023-07-20

申请人： OSRAM OLED GmbH

发明人： Jörg Erich Sorg ,  Frank Singer ,  Christoph Koller

IPC分类号： H01S5/02255 ,  H01S5/00 ,  H01S5/02234 ,  H01S5/02216 ,  H01S5/028 ,  H01S5/40 ,  H01S5/185

CPC分类号： H01S5/02255 ,  H01S5/0087 ,  H01S5/02234 ,  H01S5/02216 ,  H01S5/028 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4075 ,  H01S5/185

摘要： The invention relates to a semiconductor laser including a carrier, an edge-emitting laser diode which is arranged on the carrier and which has an active zone for generating laser radiation and a facet with a radiation exit area, an optical element which covers the facet, a connecting material which is arranged between the optical element and the facet, a molded body which covers the laser diode and the optical element at least in places, wherein the optical element is at least partially transparent to the laser radiation emitted by the laser diode during operation, and the optical element is designed to change the main propagation direction of the laser radiation entering the optical element during operation.

公开(公告)号：US11749959B2

公开(公告)日：2023-09-05

申请号：US17261300

申请日：2019-07-15

申请人： OSRAM OLED GmbH

发明人： Jörg Erich Sorg ,  Frank Singer ,  Christoph Koller

IPC分类号： H01S5/02255 ,  H01S5/00 ,  H01S5/02234 ,  H01S5/028 ,  H01S5/40 ,  H01S5/02216 ,  H01S5/185

CPC分类号： H01S5/02255 ,  H01S5/0087 ,  H01S5/028 ,  H01S5/02216 ,  H01S5/02234 ,  H01S5/185 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4075

摘要： The invention relates to a semiconductor laser including a carrier, an edge-emitting laser diode which is arranged on the carrier and which has an active zone for generating laser radiation and a facet with a radiation exit area, an optical element which covers the facet, a connecting material which is arranged between the optical element and the facet, a molded body which covers the laser diode and the optical element at least in places, wherein the optical element is at least partially transparent to the laser radiation emitted by the laser diode during operation, and the optical element is designed to change the main propagation direction of the laser radiation entering the optical element during operation.

公开(公告)号：US11658453B2

公开(公告)日：2023-05-23

申请号：US17103470

申请日：2020-11-24

申请人： Ronald LaComb ,  Kevin LaComb

发明人： Ronald LaComb ,  Kevin LaComb

IPC分类号： H01S3/083 ,  H01S3/06 ,  H01S3/067 ,  H01S3/0941 ,  H01S5/40 ,  H01S5/10 ,  H01S5/02255 ,  H01S5/042 ,  H01S5/22 ,  H01S5/12 ,  H01S5/20 ,  H01S5/42 ,  H01S5/185

CPC分类号： H01S3/083 ,  H01S3/0627 ,  H01S3/0675 ,  H01S3/0941 ,  H01S5/1075 ,  H01S5/4056 ,  H01S5/02255 ,  H01S5/04254 ,  H01S5/04256 ,  H01S5/12 ,  H01S5/185 ,  H01S5/204 ,  H01S5/2219 ,  H01S5/4075 ,  H01S5/42

摘要： The present disclosure relates to a three-dimensional cylindrical cavity-type laser system capable of supporting circumferential radial emission. A cylindrical ring waveguide provides optical confinement in the radial and axial dimensions thereby supporting a plurality of radial modes, one of a plurality of axial modes and a plurality of degenerate azimuthal modes. These modes constitute a set of traveling wave modes which propagate around the cylindrical ring waveguide possessing various degrees of optical confinement as quantified by their respective Q-factors. Index tailoring is used to tailor the radial refractive index profile and geometry of the waveguide to support radial modes possessing Q-factors capable of producing efficient radial emission, while gain tailoring is used to define a gain confining region which offsets modal gain factors of the modal constituency to favor a preferred set of modes supporting efficient radial emission out of the total modal constituency supported by the resonator. Under appropriate pump actuation the selected modes produce circumferential laser radiation with the output surface comprising of the entire outer perimeter of the cylindrical ring waveguide. The design is applicable toward both micro-resonators and resonators much larger than the optical wavelength, enabling high output powers and scalability. The circumferential radial laser emission can be concentrated by positioning the cylindrical ring laser inside a three-dimensional conical mirror thereby forming a laser ring of light propagating in the axial dimension away from the surface of the laser, which can be subsequently collimated for focused using conventional optics.

公开(公告)号：US20190252850A1

公开(公告)日：2019-08-15

申请号：US16314782

申请日：2017-06-30

申请人： Cobolt AB

发明人： Gunnar ELGCRONA ,  Magnus RÅDMARK ,  Håkan KARLSSON

IPC分类号： H01S5/022 ,  H01S5/40 ,  H01S5/00 ,  G02B27/10

CPC分类号： H01S5/02252 ,  G02B19/0057 ,  G02B23/00 ,  G02B27/1006 ,  G02B27/1073 ,  H01S3/2375 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/4012 ,  H01S5/4075 ,  H01S5/4087

摘要： A multi-wavelength laser module including a base plate, a plurality of radiation sources mounted on the base plate, at least one telescope including a first lens and a second lens wherein the second lens is arranged at a distance from the first lens along a radiation beam path, thereby creating a telescopic effect. A beam angle correction plate is arranged between the first lens and the second lens in the radiation beam path, the beam angle correction plate being angled in relation to the radiation beam path so as to parallel shift the radiation beam inside the telescope and thereby adjust the pointing direction of the radiation beam after passage of the telescope. Further, a method for assembling a multi-wavelength laser system provided with telescopes with such beam angle correction plate.

公开(公告)号：US20180278008A1

公开(公告)日：2018-09-27

申请号：US15937584

申请日：2018-03-27

申请人： David Martin Hemenway ,  David C. Dawson ,  Wolfram Urbanek

发明人： David Martin Hemenway ,  David C. Dawson ,  Wolfram Urbanek

IPC分类号： H01S3/0941 ,  H01S5/40 ,  H01S5/022 ,  H01S3/067 ,  H01S5/00 ,  H01S5/024

CPC分类号： H01S3/0941 ,  G02B6/4206 ,  H01S3/06704 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02248 ,  H01S5/02288 ,  H01S5/02469 ,  H01S5/4012 ,  H01S5/4025 ,  H01S5/4031 ,  H01S5/4075

摘要： A laser diode assembly, comprising a plurality of laser diodes each configured to emit respective ones of a plurality of laser beams along parallel and nonoverlapping optical axes and a first beam offset plate (BOP) configured to receive a first of the laser beams on a first input surface, the first laser beam having a first input optical axis, the first BOP configured to transmit a first output laser beam that has a first vertical offset from the first input optical axis.

公开(公告)号：US09898074B2

公开(公告)日：2018-02-20

申请号：US15473653

申请日：2017-03-30

申请人： APPLE INC.

发明人： Alexander Shpunt ,  Raviv Erlich

IPC分类号： G01C3/08 ,  G06F3/01 ,  G01S17/89 ,  G01S7/481 ,  G01S7/486 ,  G01S17/42

CPC分类号： G06F3/011 ,  B23P19/04 ,  G01J1/0411 ,  G01J1/44 ,  G01J2001/4466 ,  G01S7/4812 ,  G01S7/4817 ,  G01S7/4865 ,  G01S7/4868 ,  G01S17/10 ,  G01S17/42 ,  G01S17/89 ,  G02B27/0961 ,  G06T15/00 ,  H01S3/0071 ,  H01S5/02248 ,  H01S5/02288 ,  H01S5/02296 ,  H01S5/4012 ,  H01S5/4075 ,  H01S5/423 ,  Y10T29/49002

摘要： Mapping apparatus includes a transmitter, which emits a beam comprising pulses of light, and a scanner, which is configured to scan the beam, within a predefined scan range, over a scene. A receiver receives the light reflected from the scene and to generate an output indicative of a time of flight of the pulses to and from points in the scene. A processor is coupled to control the scanner so as to cause the beam to scan over a selected window within the scan range and to process the output of the receiver so as to generate a 3D map of a part of the scene that is within the selected window.

公开(公告)号：US09882351B2

公开(公告)日：2018-01-30

申请号：US15505836

申请日：2015-08-21

申请人： The University Court of the University of Glasgow

发明人： Richard James Edward Taylor ,  David T. D. Childs ,  Richard Hogg

IPC分类号： H01S5/00 ,  H01S5/10 ,  H01S5/343 ,  H01S5/20 ,  H01S5/042 ,  H01S5/024 ,  H01S5/187 ,  H01S5/42 ,  H01S5/40 ,  H01S5/026 ,  H01S5/183 ,  H01S5/18

CPC分类号： H01S5/105 ,  H01S5/02453 ,  H01S5/026 ,  H01S5/042 ,  H01S5/0608 ,  H01S5/0612 ,  H01S5/0614 ,  H01S5/1021 ,  H01S5/1028 ,  H01S5/1032 ,  H01S5/18 ,  H01S5/18319 ,  H01S5/1833 ,  H01S5/187 ,  H01S5/2018 ,  H01S5/2031 ,  H01S5/34353 ,  H01S5/3436 ,  H01S5/34366 ,  H01S5/4012 ,  H01S5/4075 ,  H01S5/42 ,  H01S5/423

摘要： A laser structure comprising a first photonic crystal surface emitting laser (PCSEL), a second PCSEL, and a coupling region that extends between the first PCSEL and the second PCSEL along a longitudinal axis and that is electrically controllable so as to be capable of coherently coupling the first PCSEL to the second PCSEL. Each PCSEL include an active layer, a photonic crystal, and a two-dimensional periodic array distributed in an array plane parallel to the longitudinal axis within the photonic crystal where the two-dimensional periodic array is formed of regions having a refractive index that is different to the surrounding photonic crystal.