公开(公告)号：US20210296857A1

公开(公告)日：2021-09-23

申请号：US16916976

申请日：2020-06-30

Applicant: Lumentum Operations LLC

Inventor： Hao HUANG ,  Mikhail DOLGANOV ,  Lijun ZHU

IPC: H01S5/0625 ,  H01S5/183 ,  H01S5/026

Abstract: An optical device may drive a compensation section of a multi-section optical load to emit a compensation optical pulse by providing, for a first time interval, a compensation electrical pulse to the compensation section. The optical device may drive a main section of the multi-section optical load to emit a main optical pulse by generating, for a second time interval, a main electrical pulse, wherein at least a portion of the first time interval overlaps with the second time interval. The optical device may emit a combined optical pulse, wherein the combined optical pulse includes the compensation optical pulse and the main optical pulse, and wherein the combined optical pulse has a shorter rise time than the main optical pulse.

公开(公告)号：US20210082859A1

公开(公告)日：2021-03-18

申请号：US16815659

申请日：2020-03-11

Applicant: Lumentum Operations LLC

Inventor： Zhengwei SHI ,  Lijun ZHU ,  Jihua DU

IPC: H01L23/00 ,  B29C35/08

Abstract: A die attachment material may include an ultra-violet (UV) curable resin and silver particles to attach a chip to a submount, where the silver particles are positioned within the UV curable resin. A method may include heating the die attachment material to obtain the UV curable resin on sintered silver particles, where at least a portion of the die attachment material is position between a chip and a submount. The method may further include irradiating, with UV light, the UV curable resin to obtain a polymer on the sintered silver particles. The polymer may form a layer on the sintered silver particles.

公开(公告)号：US20240241388A1

公开(公告)日：2024-07-18

申请号：US18185845

申请日：2023-03-17

Applicant: Lumentum Operations LLC

Inventor： James CHEN ,  Michael MILLER ,  Lijun ZHU ,  Vincent V. WONG ,  Russell Latham ,  Benjamin KESLER

IPC: G02B27/09 ,  G01B11/25 ,  G02B27/00 ,  G02B27/30 ,  G02B27/42

CPC classification number: G02B27/0955 ,  G01B11/254 ,  G02B27/0025 ,  G02B27/0916 ,  G02B27/30 ,  G02B27/4233

Abstract: In some implementations, a dot projector optic may include a collimating lens; a fisheye lens; and a dot aberration correction element disposed between the collimating lens and the fisheye lens. An input to the fisheye lens, from the dot aberration correction element, may be associated with a first field of view angle. An output from the fisheye lens may be associated with a second field of view angle that is larger than the first field of view angle.

公开(公告)号：US20240195152A1

公开(公告)日：2024-06-13

申请号：US18194143

申请日：2023-03-31

Applicant: Lumentum Operations LLC

Inventor： Wei SHI ,  Joseph LEIGH ,  Suhit Ranjan DAS ,  Huanlin ZHU ,  Raman SRINIVASAN ,  Gianluca BACCHIN ,  Yuefa LI ,  Jacob U. LOPEZ RUVALCABA ,  Lijun ZHU ,  Qianhuan YU

IPC: H01S5/42 ,  H01S5/0234 ,  H01S5/0237

CPC classification number: H01S5/423 ,  H01S5/0234 ,  H01S5/0237

Abstract: In some implementations, an emitter assembly includes a vertical cavity surface emitting laser (VCSEL) chip including a plurality of VCSELs. The emitter assembly may include a plurality of conductive pillars electrically connected to the VCSEL chip, and a conductive pillar, of the plurality of conductive pillars, may have a solder cap at an end of the conductive pillar. The emitter assembly may include a pin extending into the solder cap.

公开(公告)号：US20230299555A1

公开(公告)日：2023-09-21

申请号：US17660108

申请日：2022-04-21

Applicant: Lumentum Operations LLC

Inventor： Mikhail DOLGANOV ,  Lijun ZHU

IPC: H01S5/042 ,  H01S5/42 ,  G01S7/484 ,  G01S7/481 ,  H03K17/687

CPC classification number: H01S5/0428 ,  H01S5/423 ,  G01S7/484 ,  G01S7/4815 ,  H03K17/6871

Abstract: In some implementations, a controller may cause a first switch of a driver circuit to transition from an open state to a closed state to charge an inductive element of the driver circuit. The controller may cause the first switch to transition from the closed state to the open state to discharge the inductive element. The controller may cause a second switch of the driver circuit to transition from an open state to a closed state to select a capacitive element to be charged by discharging the inductive element. The controller may cause a third switch of the driver circuit to transition from an open state to a closed state to discharge the selected capacitive element to provide an electrical pulse to an optical emitter, of an array of optical emitters of the driver circuit, that is connected to the selected capacitive element.

公开(公告)号：US20230112690A1

公开(公告)日：2023-04-13

申请号：US17643322

申请日：2021-12-08

Applicant: Lumentum Operations LLC

Inventor： Mikhail DOLGANOV ,  Lijun ZHU ,  Hao HUANG

IPC: G01S7/4865 ,  G01S17/10 ,  G01S7/484

Abstract: A driver circuit may include an inductive element and a first circuit path connected to the inductive element, the first circuit path including an optical emitter and a capacitive element in series with the optical emitter. The driver circuit may include a second circuit path connected to the inductive element, the second circuit path including a voltage divider element to produce an output signal and a signal output to provide the output signal to a time-to-digital converter. The driver circuit may include a switch having an open state and a closed state. The switch in the closed state may cause current to charge the inductive element. The switch transitioning from the closed state to the open state may cause the inductive element to discharge current to provide an electrical pulse through the first circuit path to the optical emitter and through the second circuit path to the signal output.

公开(公告)号：US20230046942A1

公开(公告)日：2023-02-16

申请号：US17449164

申请日：2021-09-28

Applicant: Lumentum Operations LLC

Inventor： Mikhail DOLGANOV ,  Lijun ZHU ,  Hao HUANG

IPC: H04B10/564 ,  H04B10/50

Abstract: A shutdown circuit may include a filter, for receiving a laser trigger signal for a laser emitter, that is configured to output a filtered signal. The shutdown circuit may include a logic gate configured to receive the filtered signal and at least one of a first signal based on a signal from a photodiode or a second signal based on a signal from a conductive path. The shutdown circuit may include a flip-flop configured to receive an output of the logic gate and to output an enablement signal that is based on the output of the logic gate, and a driver circuit for a switch configured to control current flow to the laser emitter. The driver circuit may be configured to receive the enablement signal and the laser trigger signal and to output the laser trigger signal based on whether the enablement signal is a first or a second voltage.

公开(公告)号：US20230021526A1

公开(公告)日：2023-01-26

申请号：US17643712

申请日：2021-12-10

Applicant: Lumentum Operations LLC

Inventor： Mikhail DOLGANOV ,  Lijun ZHU

IPC: G01S7/4865 ,  G01S17/08

Abstract: A driver circuit may include an array of optical emitters arranged in one or more rows and one or more columns. The array of optical emitters includes an optical emitter associated with a row and a column. The driver circuit may include a capacitive element connected to the row, a voltage booster element connected to the capacitive element, where the voltage booster element includes an inductive element, and a first switch having an open state and a closed state. The first switch in the closed state is to cause charging of the inductive element, and in the open state is to cause discharging of the inductive element to charge the capacitive element. The driver circuit may include a second switch having an open state and a closed state. The second switch in the closed state is to cause discharging of the capacitive element through the row and the column.

公开(公告)号：US20220407289A1

公开(公告)日：2022-12-22

申请号：US17447780

申请日：2021-09-15

Applicant: Lumentum Operations LLC

Inventor： Wei SHI ,  Hao HUANG ,  Lijun ZHU ,  Siu Kwan CHEUNG ,  Kevin WANG ,  John Michael MILLER

IPC: H01S5/026 ,  H01S5/0225 ,  H01S5/0233

Abstract: An optical assembly includes a substrate; an optical subassembly that is disposed on a region of a surface of the substrate; a housing that is disposed on another region of the surface of the substrate; a first optical element that is disposed on a first support component of the housing; and a second optical element that is disposed on a second support component of the housing. The optical subassembly includes an integrated circuit (IC) driver chip; a redistribution layer (RDL) structure that is disposed on a surface of the IC driver chip, wherein the RDL structure includes a cavity; and a vertical cavity surface emitting laser (VCSEL) device disposed on a region of the surface of the RDL structure that is within the cavity of the RDL structure.

公开(公告)号：US20220299604A1

公开(公告)日：2022-09-22

申请号：US17304074

申请日：2021-06-14

Applicant: Lumentum Operations LLC

Inventor： Mikhail DOLGANOV ,  Lijun ZHU ,  Hao HUANG ,  Sean BURNS

IPC: G01S7/484 ,  G01S17/10 ,  H01S5/042

Abstract: In some implementations, a driver circuit may include a source to provide an electrical input and an array of optical emitters arranged in one or more rows and one or more columns. The array of optical emitters may include an optical emitter associated with a row of the one or more rows and a column of the one or more columns. The driver circuit may include a first switch having an open state and a closed state and a capacitive element connected to the row. The first switch in the closed state may cause charging of the capacitive element. The driver circuit may include a second switch having an open state and a closed state. The second switch in the closed state may select the column, and may cause discharging of the capacitive element through the row and the column to provide an electrical pulse to the optical emitter.