公开(公告)号：US12044956B2

公开(公告)日：2024-07-23

申请号：US17268288

申请日：2019-07-26

Applicant: Sony Corporation

Inventor： Hisayoshi Motobayashi ,  Hidekazu Kawanishi ,  Yoshiro Takiguchi ,  Masahiro Murayama ,  Hiroyuki Miyahara ,  Hitoshi Domon

IPC: G03B21/20 ,  H01S5/02218 ,  H01S5/02255 ,  H01S5/02257 ,  H01S5/02315 ,  H01S5/02325 ,  H01S5/0239 ,  H01S5/024 ,  H01S5/323 ,  H01S5/40

CPC classification number: G03B21/2033 ,  G03B21/208 ,  H01S5/02218 ,  H01S5/02255 ,  H01S5/02257 ,  H01S5/02315 ,  H01S5/02325 ,  H01S5/0239 ,  H01S5/02469 ,  H01S5/32341 ,  H01S5/4031 ,  H01S5/4087

Abstract: A light-emitting device including: a package including a light-emitting element, a reflection member that reflects light outputted from the light-emitting element, and a sealed space that accommodates the light-emitting element and the reflection member; a base plate on which a plurality of the packages is mounted; and lenses opposed to the base plate with the plurality of packages interposed therebetween, the lenses being opposed to the respective packages.

公开(公告)号：US20240235153A9

公开(公告)日：2024-07-11

申请号：US18289838

申请日：2022-03-03

Applicant: CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD

Inventor： Ou ZHANG ,  Junjie FU

IPC: H01S5/042 ,  H01S5/024

CPC classification number: H01S5/042 ,  H01S5/024

Abstract: A laser diode control method and control system, and a laser device. The control method comprises: using a first driving voltage and a first duty cycle to drive a laser diode to start working; acquiring the working time of the laser diode; and when the working time of the laser diode exceeds a first time threshold, using a second driving voltage and a second duty cycle to drive the laser diode to work, wherein the second driving voltage is lower than the first driving voltage, and/or the second duty cycle is smaller than the first duty cycle, such that the power consumption in the working process of the laser diode can be effectively reduced, and an excessive high temperature of the laser diode during normal operation can be prevented.

公开(公告)号：US12009636B2

公开(公告)日：2024-06-11

申请号：US18164285

申请日：2023-02-03

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Junji Yoshida ,  Hirokazu Itoh ,  Satoshi Irino ,  Yuichiro Irie ,  Taketsugu Sawamura

IPC: H01S5/00 ,  H01S3/067 ,  H01S5/02251 ,  H01S5/02253 ,  H01S5/10 ,  H01S5/20 ,  H01S5/22 ,  H01S5/227 ,  H01S5/32 ,  H01S5/34 ,  H01S5/343 ,  B82Y20/00 ,  H01S3/04 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/30 ,  H01S5/024 ,  H01S5/028 ,  H01S5/14

CPC classification number: H01S5/3216 ,  H01S3/0675 ,  H01S3/06754 ,  H01S5/02251 ,  H01S5/02253 ,  H01S5/1064 ,  H01S5/2018 ,  H01S5/2077 ,  H01S5/2205 ,  H01S5/2206 ,  H01S5/227 ,  H01S5/3213 ,  H01S5/34 ,  H01S5/3406 ,  H01S5/34306 ,  H01S5/3434 ,  B82Y20/00 ,  H01S3/04 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/09415 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/024 ,  H01S5/0287 ,  H01S5/1039 ,  H01S5/146 ,  H01S5/2222 ,  H01S2301/03 ,  H01S2301/166

Abstract: An optical semiconductor device outputting a predetermined wavelength of laser light includes a quantum well active layer positioned between a p-type cladding layer and an n-type cladding layer in thickness direction. The optical semiconductor device includes a separate confinement heterostructure layer positioned between the quantum well active layer and the n-type cladding layer. The optical semiconductor device further includes an electric-field-distribution-control layer positioned between the separate confinement heterostructure layer and the n-type cladding layer and configured by at least two semiconductor layers having band gap energy greater than band gap energy of a barrier layer constituting the quantum well active layer. The optical semiconductor device is applied to a ridge-stripe type laser.

公开(公告)号：US12007483B2

公开(公告)日：2024-06-11

申请号：US17081431

申请日：2020-10-27

Applicant: FARO Technologies, Inc.

Inventor： Jacob J. Mertz ,  Jun Li ,  Michael Ferrara ,  Robert E. Bridges

IPC: G01S17/42 ,  G01B11/00 ,  G01C15/00 ,  G01S7/481 ,  G01S7/497 ,  G01S17/36 ,  G01S17/66 ,  G02B6/32 ,  G02F1/095 ,  H01S5/024 ,  H01S5/042 ,  H01S5/062 ,  H01S5/068

CPC classification number: G01S17/42 ,  G01B11/002 ,  G01C15/002 ,  G01S7/4814 ,  G01S7/4818 ,  G01S7/497 ,  G01S17/36 ,  G01S17/66 ,  G02B6/32 ,  G02F1/0955 ,  G02F2203/21 ,  H01S5/02415 ,  H01S5/0427 ,  H01S5/062 ,  H01S5/068

Abstract: A coordinate measuring device is provided having a light source that emits a beam of light. A distance meter measures a distance to a target. A first locator camera assembly includes a first camera and first lights. A second locator camera assembly includes a second camera and second lights. The processor matches retroreflectors in a first image of the first camera and a second image of the second camera based on a shape-and-context matching of retroreflector spots in the first and second image and on an area-context-matching of background objects in the first and second image. The retroreflector spots in the first image produced by illumination of the retroreflectors by the first lights, the retroreflector spots in the second image produced by illumination of the retroreflectors by the second lights. The processor provides a third image that includes both the background objects and markers indicating the matched retroreflectors.

公开(公告)号：US20240170913A1

公开(公告)日：2024-05-23

申请号：US17990221

申请日：2022-11-18

Applicant: HIGH POWER OPTO. INC.

Inventor： Chih-Sung CHANG ,  Wei-Yu YEN ,  Wayne JAN ,  Tau-Jin WU

IPC: H01S5/024 ,  H01S5/0236 ,  H01S5/028 ,  H01S5/183

CPC classification number: H01S5/02469 ,  H01S5/0236 ,  H01S5/02476 ,  H01S5/028 ,  H01S5/18308 ,  H01S5/18375

Abstract: A surface light emitting element with high heat dissipation and uniform light emission includes a metal reflective layer, a first metal conductive layer, an omnidirectional reflecting current isolation layer, a first-type semiconductor current spreading layer, a light emitting diode layer, a second-type semiconductor current spreading layer and a second metal conductive layer. The metal reflective layer includes at least one surrounding wall structure. The omnidirectional reflecting current isolation layer is arranged on the metal reflective layer and entirely covers the two sides of the at least one surrounding wall structure to form at least one cylindrical channel. The light emitting diode layer is located in the at least one cylindrical channel.

公开(公告)号：US20240146033A1

公开(公告)日：2024-05-02

申请号：US18279953

申请日：2022-02-10

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yuma HATANO ,  Takashi SEKINE ,  Yuki MURAMATSU ,  Yoshinori TAMAOKI

IPC: H01S5/40 ,  H01S5/02255 ,  H01S5/024 ,  H01S5/042

CPC classification number: H01S5/4012 ,  H01S5/02255 ,  H01S5/02469 ,  H01S5/04256

Abstract: A laser device includes a support, a first heat sink, a plurality of laser light sources attached to the support, and a plurality of electrodes bridged between the plurality of laser light sources and the first heat sink. Each of the plurality of laser light sources is movable with respect to the support. Each of the plurality of electrodes is electrically connected to one of the plurality of laser light sources at a first connection portion, and is thermally connected to the first heat sink at a second connection portion. In each of the plurality of electrodes, an extension part between the first connection portion and the second connection portion has flexibility, and a length of the extension part is larger than a linear distance between the first connection portion and the second connection portion.

公开(公告)号：US11972992B2

公开(公告)日：2024-04-30

申请号：US17281608

申请日：2019-07-17

Applicant: KYOCERA Corporation

Inventor： Takafumi Yamaguchi ,  Toshifumi Higashi ,  Youji Furukubo

IPC: H01S5/023 ,  H01L23/13 ,  H01S5/022 ,  H01S5/02208 ,  H01S5/024

CPC classification number: H01L23/13 ,  H01S5/022 ,  H01S5/02208 ,  H01S5/023 ,  H01S5/02469

Abstract: A substrate for mounting an electronic component according to an aspect of an embodiment includes a base that is a plate-shaped body, where a first surface of the base is sloped relative to a second surface that is opposed to the first surface, and when the base is bisected into a lower part and a higher part in a slope direction thereof, a thermal conductivity of the lower part is higher than a thermal conductivity of the higher part.

公开(公告)号：US11949204B2

公开(公告)日：2024-04-02

申请号：US18109998

申请日：2023-02-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Bryan Lochman ,  Matthew Sauter ,  Michael Denninger ,  Bien Chann ,  Keita Inoue ,  John Roethle

IPC: H01S3/04 ,  F28F21/08 ,  H01S5/024 ,  H05K7/20

CPC classification number: H01S3/0405 ,  F28F21/084 ,  H05K7/2049 ,  H05K7/20509 ,  H01S5/024

Abstract: In various embodiments, laser devices feature means, such as fasteners, for attaching a laser package to a cooling plate, which allow motion of the laser package in response to thermal cycles resulting from operation of a beam emitter therewithin. Embodiments of the invention additionally or instead include laser devices featuring segmented barrier layers for electrically isolating the laser package from the cooling plate.

公开(公告)号：US20240106203A1

公开(公告)日：2024-03-28

申请号：US18078819

申请日：2022-12-09

Applicant: Apple Inc.

Inventor： Chin Han Lin ,  Yazan Z. Alnahhas ,  Fei Tan

IPC: H01S5/42 ,  H01S5/024 ,  H01S5/125 ,  H01S5/183

CPC classification number: H01S5/423 ,  H01S5/024 ,  H01S5/125 ,  H01S5/183

Abstract: Embodiments of the disclosure relate to an optoelectronic device having an epitaxial stack, an array of laser emitters, and a thermal sensor. The epitaxial stack includes a set of epitaxial layers. The array of laser emitters is formed in the set of epitaxial layers. The thermal sensor is coupled to the epitaxial stack at a location adjacent to a laser emitter of the array of laser emitters. The optoelectronic device further includes a controller configured to receive an output of the thermal sensor and determine a temperature at a junction between an active region and an inactive region in the laser emitter by in-situ measurements.

公开(公告)号：US11929593B2

公开(公告)日：2024-03-12

申请号：US17374975

申请日：2021-07-13

Applicant: NATIONAL TSING HUA UNIVERSITY

Inventor： Yen-Chieh Huang

IPC: H01S5/04 ,  H01S3/091 ,  H01S5/024 ,  H01S5/40

CPC classification number: H01S5/4025 ,  H01S3/091 ,  H01S5/02423 ,  H01S5/041

Abstract: A high-efficiency laser pumping device is provided, wherein a dielectric with or without a tapered aperture is used to accept, guide, and concentrate a pump light toward a laser gain material. Preferably, the dielectric is also a heat insulator between the pump-light source and the laser gain material. The pump-light source includes an array of light-emitting diodes, or an array of laser diodes, or an array of mixed light-emitting-diodes and laser diodes. Preferably, the input and output faces of the dielectric are optically coated with dielectric layers to maximize the pump brightness toward the laser gain material. A high-efficiency laser-pumping system with active cooling apparatus is further provided, wherein a plural number of the optical-guiding and thermal-insulation dielectrics are arranged to receive the pump lights from a plural number of pump-light sources, configured to concentrate all the pump light toward a laser gain material.