公开(公告)号：US20240332902A1

公开(公告)日：2024-10-03

申请号：US18577709

申请日：2022-06-10

Applicant: Kazuhiro HARASAKA ,  Naoto JIKUTANI

Inventor： Kazuhiro HARASAKA ,  Naoto JIKUTANI

IPC: H01S5/183 ,  H01S5/00 ,  H01S5/042 ,  H01S5/062

CPC classification number: H01S5/18311 ,  H01S5/0014 ,  H01S5/04256 ,  H01S5/06216 ,  H01S5/18327

Abstract: A surface emitting includes: an active layer; multiple reflectors facing each other with the active layer therebetween; and an electrode pair coupled to a power supply device and configured to inject current into the active layer. The surface emitting laser has: a current injection period in which the current is injected by the power supply device to oscillate no laser beam; and a current decrease period after the current injection period, in which a current value of the current injected into the active layer is lower than a current value of the current injected during the current injection period, to oscillate a laser beam.

公开(公告)号：US12066632B2

公开(公告)日：2024-08-20

申请号：US18116735

申请日：2023-03-02

Applicant: KYOCERA SLD Laser, Inc.

Inventor： Paul Rudy ,  James W. Raring ,  Eric Goutain ,  Hua Huang

IPC: G02B27/01 ,  G02B6/00 ,  G02B27/42 ,  H01S5/00 ,  H01S5/02212 ,  H01S5/02325 ,  H01S5/32 ,  H01S5/343 ,  H01S5/40 ,  H01S5/02216 ,  H01S5/10 ,  H01S5/20 ,  H01S5/22 ,  H01S5/30

CPC classification number: G02B27/0172 ,  G02B6/00 ,  G02B27/017 ,  H01S5/320275 ,  H01S5/4093 ,  G02B2027/0178 ,  G02B27/4205 ,  G02B27/4272 ,  H01S5/0014 ,  H01S5/02212 ,  H01S5/02216 ,  H01S5/02325 ,  H01S5/1039 ,  H01S5/2009 ,  H01S5/2201 ,  H01S5/3063 ,  H01S5/32025 ,  H01S5/34333 ,  H01S5/4012

Abstract: The present invention is directed to wearable display technologies. More specifically, various embodiments of the present invention provide wearable augmented reality glasses incorporating projection display systems where one or more laser diodes are used as light source for illustrating images with optical delivery to the eye using transparent waveguides. In one set of embodiments, the present invention provides wearable augmented reality glasses incorporating projector systems that utilize transparent waveguides and blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides wearable augmented reality glasses incorporating projection systems having digital lighting processing engines illuminated by blue and/or green laser devices with optical delivery to the eye using transparent waveguides. In one embodiment, the present invention provides wearable augmented reality glasses incorporating a 3D display system with optical delivery to the eye using transparent waveguides. There are other embodiments as well.

公开(公告)号：US12040587B2

公开(公告)日：2024-07-16

申请号：US17265283

申请日：2019-12-17

Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.

Inventor： Mitsuyoshi Miyata

IPC: H01S3/04 ,  H01S5/02208 ,  H01S5/02218 ,  H01S5/023 ,  H01S5/02345 ,  H01S5/0239 ,  H01S5/024 ,  H01S5/06 ,  H01S5/0687 ,  H01S5/00

CPC classification number: H01S5/02208 ,  H01S5/02218 ,  H01S5/023 ,  H01S5/02345 ,  H01S5/0239 ,  H01S5/02415 ,  H01S5/0612 ,  H01S5/0687 ,  H01S5/0014

Abstract: An optical semiconductor device includes a chassis that has an external wall, a feedthrough that penetrates the external wall of the chassis and has a projection portion projecting toward outside of the chassis from the external wall, a connection terminal that is electrically connected to a component mounted in the chassis and is on the projection portion of the feedthrough, a first temperature detector that is on an external face of the external wall of the chassis and detects a temperature of the chassis, and a flexible substrate of which an end is connected to the connection terminal and of which a portion spaced from the end is connected to the first temperature detector, wherein the first temperature detector is between the external wall and the flexible substrate.

公开(公告)号：US20240162682A1

公开(公告)日：2024-05-16

申请号：US17987821

申请日：2022-11-15

Applicant: Zhigang Zhou ,  Kevin Boyd ,  Guang-Hua Duan ,  Min Huang ,  Zhenming Xie ,  Rihao Li ,  Qiang Liu ,  Huixian Wen ,  Jianguo Wang

Inventor： Zhigang Zhou ,  Kevin Boyd ,  Guang-Hua Duan ,  Min Huang ,  Zhenming Xie ,  Rihao Li ,  Qiang Liu ,  Huixian Wen ,  Jianguo Wang

IPC: H01S5/14 ,  H01S5/00 ,  H01S5/02253 ,  H01S5/0234 ,  H01S5/06 ,  H04B10/50

CPC classification number: H01S5/141 ,  H01S5/0014 ,  H01S5/0064 ,  H01S5/02253 ,  H01S5/0234 ,  H01S5/0612 ,  H04B10/503

Abstract: An external cavity tunable laser includes a gain median module to generate a broadband optical spectrum covering a predetermined wavelength range; a collimate lens turning a diverging beam into a collimated beam; a pair of etalons to tune frequency; an actuator to adjust an external cavity optical pathlength; a bandpass filter to block one or more frequencies outside the predetermined wavelength range; a beam splitter to split a percentage of the beam to a photodetector; a reflection mirror for feedback to gain median waveguide; an isolator for preventing reflecting light back to the external cavity; and a hermetically sealed housing less than 0.15 cubic centimeters.

公开(公告)号：US11984696B2

公开(公告)日：2024-05-14

申请号：US16990544

申请日：2020-08-11

Applicant: Fujitsu Optical Components Limited

Inventor： Kazumasa Takabayashi ,  Suguru Akiyama

IPC: H01S5/00 ,  H01S5/042 ,  H01S5/10

CPC classification number: H01S5/0014 ,  H01S5/04256 ,  H01S5/101

Abstract: An optical amplifier includes an optical amplifier chip that includes a pair of semiconductor optical amplifiers (SOAs), a U-shaped waveguide connecting the pair of SOAS, and two electrodes that respectively correspond to the pair of SOAS and are separated from each other, and a base substrate that includes a common metal wiring connecting the two electrodes, and on which the optical amplifier chip is mounted.

公开(公告)号：US20240128713A1

公开(公告)日：2024-04-18

申请号：US18397545

申请日：2023-12-27

Applicant: iReach Corporation

Inventor： Hsiu-Ju YANG ,  Shou-Lung CHEN ,  Hsin-Chan CHUNG

IPC: H01S5/042 ,  H01L33/48 ,  H01L33/54 ,  H01L33/62 ,  H01S5/00 ,  H01S5/02257

CPC classification number: H01S5/042 ,  H01L33/486 ,  H01L33/54 ,  H01L33/62 ,  H01S5/0014 ,  H01S5/02257 ,  H01L33/58 ,  H01L2933/005

Abstract: A package structure includes: a substrate includes a first surface; a semiconductor chip disposed on the first surface; a support disposed on the first surface and surrounding the semiconductor chip comprises an electrical conducting member and penetrating the support; and an optical component disposed on the support and electrically connected to the substrate by the electrical conducting member.

公开(公告)号：US11960094B2

公开(公告)日：2024-04-16

申请号：US18150982

申请日：2023-01-06

Applicant: GOOGLE LLC

Inventor： Stuart James Myron Nicholson ,  Timothy Paul Bodiya

IPC: G02B27/01 ,  F21V8/00 ,  G02B6/00 ,  G02C11/00 ,  G02B26/08 ,  G02B26/10 ,  G02C5/22 ,  H01S5/00

CPC classification number: G02B27/0172 ,  G02B6/0023 ,  G02B6/005 ,  G02C11/10 ,  G02B26/0816 ,  G02B26/10 ,  G02B2027/0123 ,  G02B2027/014 ,  G02B2027/0178 ,  G02C5/22 ,  H01S5/0014

Abstract: A wearable heads-up display includes a power source, laser sources, and a lightguide. A photodetector is positioned to detect an intensity of a test light emitted at a perimeter of the lightguide from an optical path within the lightguide. A laser safety circuit provides a control to reduce or shut off a supply of electrical power from the power source to the laser sources in response to an output signal from the photodetector indicating that the detected intensity is below a threshold.

公开(公告)号：US20240063605A1

公开(公告)日：2024-02-22

申请号：US18268026

申请日：2021-12-28

Applicant: Nanyang Technological University

Inventor： Donguk NAM ,  Youngmin KIM ,  Yongduck JUNG ,  Daniel BURT ,  Hyo Jun JOO

IPC: H01S5/10 ,  H01S5/125 ,  H01S5/32 ,  H01S5/026

CPC classification number: H01S5/1017 ,  H01S5/125 ,  H01S5/3201 ,  H01S5/3223 ,  H01S5/0261 ,  H01S5/0014

Abstract: According to embodiments of the present invention, an optical device is provided. The optical device includes a substrate, a semiconductor layer on the substrate, the semiconductor layer having an initial tensile strain and including a monolithic crossbeam structure defined therein, and an optical cavity optically coupled to the monolithic crossbeam structure, wherein the monolithic crossbeam structure has a first beam and a second beam arranged at least substantially orthogonal to each other and intersecting each other at an intersection region, the intersection region being subjected to a tensile strain that is increased relative to the initial tensile strain. According to further embodiments of the present invention, a method of forming an optical device and a method of controlling an optical device are also provided.

公开(公告)号：US11862937B1

公开(公告)日：2024-01-02

申请号：US17094662

申请日：2020-11-10

Applicant: Soraa Laser Diode, Inc.

Inventor： James W. Raring

IPC: H01S5/22 ,  B82Y20/00 ,  H01S5/02 ,  H01S5/20 ,  H01S5/32 ,  H01S5/343 ,  H01S5/028 ,  H01S5/10 ,  H01S5/00 ,  H01S5/40

CPC classification number: H01S5/2201 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/0287 ,  H01S5/1085 ,  H01S5/2009 ,  H01S5/2031 ,  H01S5/3213 ,  H01S5/320275 ,  H01S5/34333 ,  H01S5/0014 ,  H01S5/028 ,  H01S5/3202 ,  H01S5/32025 ,  H01S5/4025

Abstract: Optical devices having a structured active region configured for selected wavelengths of light emissions are disclosed.

公开(公告)号：US11749969B1

公开(公告)日：2023-09-05

申请号：US17843702

申请日：2022-06-17

Applicant: KYOCERA SLD Laser, Inc.

Inventor： James W. Raring ,  You-Da Lin ,  Christiane Elsass

IPC: H01S5/343 ,  H01S5/32 ,  H01L33/08 ,  H01S5/20 ,  H01S5/34 ,  H01S5/22 ,  H01S5/028 ,  H01L33/16 ,  H01S5/00 ,  H01S5/042 ,  H01L21/027 ,  H01L21/04 ,  H01L21/28 ,  H01L21/302 ,  H01L21/311 ,  H01L21/461 ,  H01L21/469 ,  H01L21/48 ,  H10N30/082

CPC classification number: H01S5/34333 ,  H01L33/08 ,  H01S5/028 ,  H01S5/0287 ,  H01S5/2009 ,  H01S5/2201 ,  H01S5/2214 ,  H01S5/3216 ,  H01S5/320275 ,  H01S5/3401 ,  H01L21/0274 ,  H01L21/042 ,  H01L21/28123 ,  H01L21/302 ,  H01L21/311 ,  H01L21/461 ,  H01L21/469 ,  H01L21/4828 ,  H01L33/16 ,  H01S5/0014 ,  H01S5/04252 ,  H01S5/22 ,  H01S5/3214 ,  H10N30/082

Abstract: An optical device includes a gallium and nitrogen containing substrate comprising a surface region configured in a (20-2-1) orientation, a (30-3-1) orientation, or a (30-31) orientation, within +/−10 degrees toward c-plane and/or a-plane from the orientation. Optical devices having quantum well regions overly the surface region are also disclosed.