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1.发明公开公开(公告)号：US20240364079A1
公开(公告)日：2024-10-31
申请号：US18683035
申请日：2022-05-19
发明人： Kazuyoshi HIROSE , Koyo WATANABE , Hiroki KAMEI
CPC分类号： H01S5/18302 , H01S5/0427 , H01S5/06246 , H01S5/18305 , H01S5/222
摘要： A method for designing a phase modulation layer of a light emitting element as an iPMSEL including a light emitting portion and the phase modulation layer optically coupled to the light emitting portion includes a generation step for generating a design pattern of the phase modulation layer. The phase modulation layer includes a base layer and a plurality of different refractive index regions having different refractive indices from the base layer and distributed two-dimensionally in a plane perpendicular to a thickness direction of the phase modulation layer.
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公开(公告)号：US20240364075A1
公开(公告)日：2024-10-31
申请号：US18635157
申请日：2024-04-15
IPC分类号： H01S5/042
CPC分类号： H01S5/0427
摘要： A switchable laser driver includes one or more pre-drivers, two or more signal interrupters coupled with the pre-driver(s), and two or more drivers coupled with the signal interrupters. By selecting a signal from a pre-driver instead of from a driver, the switchable laser driver maintains its speed.
A DC-coupled laser driver for a directly modulated laser (DML) couples an inductor, the DML, and a bias current sink in series. The anode and cathode of the DML are coupled with two outputs of a current switch, and two termination circuits, each including a termination resistor in series with a capacitor.-
公开(公告)号：US12132297B2
公开(公告)日：2024-10-29
申请号：US17294446
申请日：2018-09-25
发明人： Yang Wang , Yongxiang He
IPC分类号： H01S5/00 , H01S5/0225 , H01S5/0234 , H01S5/042 , H01S5/183 , H01S5/42 , H01S5/02345
CPC分类号： H01S5/423 , H01S5/0225 , H01S5/0234 , H01S5/04256 , H01S5/18361 , H01S5/02345 , H01S5/42
摘要： The present invention discloses a VCSEL array that can function in at least two different operational modes. In one operational mode, the VCSEL array functions as a regular-patterned array; and in the other operational mode, the VCSEL array functions as an irregular-patterned array. Thus, the same VCSEL chip may be used as an illumination light source or a structural light method light source for 3D sensing, depending on the selected operational mode.
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4.发明授权公开(公告)号：US12132295B2
公开(公告)日：2024-10-29
申请号：US17120240
申请日：2020-12-13
IPC分类号： H01S5/042 , G01S7/484 , G01S17/10 , H01S5/02257 , H01S5/42
CPC分类号： H01S5/0428 , G01S7/484 , G01S17/10 , H01S5/02257 , H01S5/423
摘要： A light-emitting device is provided with a light source and a controller. The light source includes multiple light-emitting elements and multiple driving elements that are provided in correspondence with the light-emitting elements and drive the light-emitting elements to light up by going to an ON state. The controller controls a switching between a successive lighting operation that causes the light-emitting elements to light up successively and a simultaneous lighting operation that causes the light-emitting elements to light up simultaneously in parallel. The light source includes a power supply line set to a reference potential or a power supply potential, a driving signal line that is connected to the power supply line and that supplies a driving signal to the driving elements, and a lighting signal line that supplies a lighting signal for causing the light-emitting elements to light up. In the successive lighting operation, the controller sets the power supply line to the power supply potential and sets each driving element to the ON state with the driving signal and the lighting signal to cause each light-emitting element corresponding to each driving element to light up successively. In the simultaneous lighting operation, the controller sets the power supply line to the reference potential and also sets the driving elements to the ON state with the driving signal and the lighting signal to cause the light-emitting elements to light up simultaneously in parallel.
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公开(公告)号：US20240356308A1
公开(公告)日：2024-10-24
申请号：US18631172
申请日：2024-04-10
发明人： TATSURO UCHIDA , TAKAKO SUGA , TAKESHI UCHIDA
CPC分类号： H01S5/423 , H01S5/042 , H01S5/18347 , H01S5/18311
摘要： A light emitting apparatus comprises a first light emitting unit and a second light emitting unit; and a first drive wiring configured to drive the first light emitting unit and a second drive wiring configured to drive the second light emitting unit. A plurality of light emitting elements having mesa structure is arranged in the first light emitting unit and the second light emitting unit. The first drive wiring is in electrical contact with an upper surface of the mesa structure in the first light emitting unit. The first drive wiring extends above the upper surface of the mesa structure in the second light emitting unit. The upper surface of the mesa structure in the second light emitting unit and the first drive wiring are electrically insulated by an insulating film.
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6.发明授权公开(公告)号：US12126142B2
公开(公告)日：2024-10-22
申请号：US17292975
申请日：2019-10-25
发明人： Takashi Tange , Kunihiko Tasai , Kota Tokuda
CPC分类号： H01S5/34333 , H01S5/04252 , H01S5/22
摘要： A nitride semiconductor laser device of one embodiment of the present disclosure includes a single-crystal substrate, a base layer, a sheet-shaped structure, a light emitting layer, and a resonator mirror. The single-crystal substrate extends in one direction. The base layer is provided on the single-crystal substrate and includes a nitride semiconductor. The sheet-shaped structure is provided on the base layer to stand in a direction perpendicular to the base layer. The sheet-shaped structure has an area of a side surface that is greater than an area of an upper surface. The side surface extends in a longitudinal direction of the single-crystal substrate. The sheet-shaped structure includes a nitride semiconductor. The light emitting layer is provided at least on the side surface of the sheet-shaped structure. The light emitting layer includes a nitride semiconductor. The resonator mirror is provided by a pair of end surfaces of the sheet-shaped structure that oppose each other in the longitudinal direction.
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公开(公告)号：US12126137B2
公开(公告)日：2024-10-22
申请号：US17975219
申请日：2022-10-27
申请人： Sony Corporation
发明人： Susumu Sato , Tatsushi Hamaguchi , Shoichiro Izumi , Noriyuki Futagawa , Masamichi Ito , Jugo Mitomo , Hiroshi Nakajima
CPC分类号： H01S5/18388 , H01S5/183 , H01S5/18327 , H01S5/18361 , H01S5/18369 , H01S5/18375 , H01S5/18377 , H01S5/34333 , H01S5/0425 , H01S5/04253 , H01S2304/02 , H01S2304/04
摘要： A light-emitting element includes: a laminated structure body 20 which is formed from a GaN-based compound semiconductor and in which a first compound semiconductor layer 21 including a first surface 21a and a second surface 21b that is opposed to the first surface 21a, an active layer 23 that faces the second surface 21b of the first compound semiconductor layer 21, and a second compound semiconductor layer 22 including a first surface 22a that faces the active layer 23 and a second surface 22b that is opposed to the first surface 22a are laminated; a first light reflection layer 41 that is provided on the first surface 21a side of the first compound semiconductor layer 21; and a second light reflection layer 42 that is provided on the second surface 22b side of the second compound semiconductor layer 22. The first light reflection layer 41 includes a concave mirror portion 43, and the second light reflection layer 42 has a flat shape.
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8.发明公开公开(公告)号：US20240348014A1
公开(公告)日：2024-10-17
申请号：US18336546
申请日：2023-06-16
发明人： Chien-Yao LU , Albert YUEN , Shibajyoti GHOSH DASTIDER , Yeyu ZHU
CPC分类号： H01S5/18311 , H01S5/042 , H01S5/18322 , H01S5/18347
摘要： A vertical-cavity surface-emitting laser (VCSEL) device includes a first distributed Bragg reflector (DBR) minor; a second DBR minor arranged on the first DBR mirror; an active layer arranged between the first DBR mirror and the second DBR mirror; and an oxidation layer arranged between the active layer and the second DBR mirror. The oxidation layer comprises an oxide aperture formed through the oxidation layer. A plurality of segmented oxidation trenches are arranged around an area in which the oxide aperture is formed and extend into the stacked structure to expose the oxidation layer for oxidation that forms the oxide aperture. A plurality of plating islands are spatially separated from each other. Each plating island vertically extends into a respective segmented oxidation trench of the plurality of segmented oxidation trenches and seals the respective segmented oxidation trench in order to prevent further oxidation of the oxidation layer.
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公开(公告)号：US20240348008A1
公开(公告)日：2024-10-17
申请号：US18335937
申请日：2023-06-15
IPC分类号： H01S5/042 , H01S5/02315 , H01S5/0234 , H01S5/183 , H01S5/42 , H05K1/02
CPC分类号： H01S5/04256 , H01S5/02315 , H01S5/0234 , H01S5/18305 , H01S5/423 , H05K1/0218
摘要： In some implementations, a vertical cavity surface emitting laser (VCSEL) device includes a substrate and a plurality of VCSELs on the substrate. The VCSEL device may include an anode layer on the substrate and electrically connected to the plurality of VCSELs. The VCSEL device may include a cathode electrode over at least a portion of one or more VCSELs, of the plurality of VCSELs, and electrically connected to the one or more VCSELs. The VCSEL device may include a ground layer electrically isolated from the at least one anode layer and the cathode electrode by one or more isolation layers, wherein the ground layer is on the anode layer and the cathode electrode, between the anode layer and the cathode electrode, or underneath the anode layer.
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公开(公告)号：US20240348006A1
公开(公告)日：2024-10-17
申请号：US18753137
申请日：2024-06-25
发明人： John Parker , Molly Piels , Hanxing Shi
CPC分类号： H01S5/026 , G02B6/4266 , H01S5/0085 , H01S5/12 , H01S5/042
摘要： A symmetric distributed feedback (DFB) laser that is integrated in a silicon based photonic integrated circuit can output light from both sides of the symmetric DFB laser onto waveguides. The light in the waveguides can be phase adjusted and combined using an optical coupler. The symmetric DFB laser can generate light and symmetrically output light onto different lanes of a multi-lane transmitter.
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