WO2022167594A1 - Laserdiodenanordnung, beleuchtungseinheit und laserprojektionsvorrichtung - Google Patents
Laserdiodenanordnung, beleuchtungseinheit und laserprojektionsvorrichtung Download PDFInfo
- Publication number
- WO2022167594A1 WO2022167594A1 PCT/EP2022/052737 EP2022052737W WO2022167594A1 WO 2022167594 A1 WO2022167594 A1 WO 2022167594A1 EP 2022052737 W EP2022052737 W EP 2022052737W WO 2022167594 A1 WO2022167594 A1 WO 2022167594A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- laser diode
- housing
- diodes
- laser diodes
- Prior art date
Links
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 238000009429 electrical wiring Methods 0.000 claims abstract description 6
- 230000010287 polarization Effects 0.000 claims description 47
- 230000005855 radiation Effects 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000005286 illumination Methods 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- 230000005284 excitation Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 238000001429 visible spectrum Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02253—Out-coupling of light using lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4018—Lasers electrically in series
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4087—Array arrangements, e.g. constituted by discrete laser diodes or laser bar emitting more than one wavelength
- H01S5/4093—Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4012—Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4075—Beam steering
Definitions
- the present invention relates to a laser diode arrangement, a lighting unit comprising this and a laser projection device with this lighting unit.
- LED Light Emitting Diode
- laser diode arrays are used as semiconductor light sources, which are characterized by an improved service life, good energy efficiency and high spectral stability, so that bright laser projection devices with improved color saturation can be implemented.
- Separate light source units emitting blue, green or red are provided for extensive coverage of the visible spectrum, in particular for professional laser projection devices in movie theaters, high-quality home cinemas and miniaturized projectors for smartphones .
- laser diodes emitting in the blue, green and red part of the visible spectrum differ with regard to the achievable light yield, whereby laser diodes based on InGaN semiconductors with an emission maximum in the green-yellow part of the visible spectrum have lower current densities than those emitting in blue tolerate .
- laser diodes for red light have higher thermal stabilization requirements compared to laser diodes for shorter wavelengths.
- light generating devices for laser projectors with a monochromatic light source are usually more economical. These typically use powerful blue-emitting laser diodes that feed the blue channel and are used in addition to exciting a wavelength conversion element that delivers electromagnetic radiation in the green and red ranges.
- blue laser diodes are used to excite materials that have different spectral fluorescence, for example based on phosphorus.
- a rotating component with a fluorescence coating can be used as the wavelength conversion element for sequential generation of the spectral colors. Such a color wheel is disclosed for example by DE 10 2010 003 234 A1.
- DE 11 2013 004 405 B4 describes an illumination arrangement for a laser projection device with two stationary, spatially separate wavelength conversion elements that are assigned to different spectral ranges. Simultaneous radiation emission in the green and red is possible, which is superimposed in the further beam path.
- a beam placed in the beam path between the laser diode array and the wavelength conversion elements ordered beam splitter optics uses this difference in the emission characteristics, so that radiation from the first type of laser diode is fed exclusively to the first wavelength conversion element and from the second type of laser diode exclusively to the second wavelength conversion element.
- DE 11 2013 004 405 B4 proposes a preferred embodiment of using a third separate light source, which is coupled in the beam path after the wavelength conversion elements by means of a collimation lens system.
- the optics required for guiding the beam lead to a complex and large-scale lighting arrangement.
- US 20190068936 A1 describes an illumination unit with a blue-emitting laser diode array and a wavelength conversion element for emitting fluorescent radiation.
- a polarization beam splitter is provided in the beam path emanating from the laser diode array, which directs part of the radiation onto a diffuser to create a blue channel and feeds the remaining part to the wavelength conversion element. Since the laser diode array emits linearly polarized radiation, a polarization element is provided in the beam path in front of the polarization beam splitter, which rotates the polarization direction by 90° for part of the radiation.
- the object of the invention is to specify a laser diode arrangement which makes it possible to simplify the optics for guiding the beam in lighting units of laser projection devices. Furthermore, the laser diode arrangement should be able to be better adapted to different lighting units. Also to be mentioned is an illumination unit with a wavelength conversion element and the laser diode arrangement and a laser projection device accommodating this, the optical components of which for beam guidance can be designed to be small. The object is solved by the features of claim 1 . Advantageous embodiments of the laser diode arrangement are the subject matter of the dependent claims and claims 10 and 11 relate to an illumination unit comprising this and a laser projection device.
- the starting point of the invention is a laser diode arrangement with a carrier and a laser diode array arranged on it.
- the laser diode array comprises a first light group with a multiplicity of first laser diodes and a second light group with a multiplicity of second laser diodes, the first light group emitting linearly polarized electromagnetic radiation with a first polarization direction and the second light group emitting linearly polarized electromagnetic radiation with a second polarization direction and the first polarization direction and the second polarization direction are perpendicular to one another.
- the laser diode arrangement is therefore suitable for use in an illumination unit with a polarization beam splitter, which splits radiation into a blue channel and into an excitation channel for a wavelength conversion element.
- the laser diode arrangement according to the invention is designed in such a way that the power weighting between the blue channel and the excitation channel can be adapted without additional optics having to be provided for this purpose in the illumination unit receiving the radiation.
- the first lighting group comprises at least one first laser housing, which accommodates at least one first laser diode
- the second lighting group comprises at least one second laser housing, which accommodates at least one second laser diode.
- the number of first laser diodes in the laser diode array corresponds to at least twice the number of second laser diodes, with the first laser diodes and the second laser diodes having the same maximum optical output power.
- each of the first th and second laser diodes preferably refers to each of the first th and second laser diodes, it being particularly advantageous for the radiation-generating subunits of the first and second laser diodes to be of identical design.
- electrical wiring for the laser diode array is laid out on the carrier of the laser diode arrangement according to the invention in such a way that the current intensity at the first laser diodes can be adjusted continuously and independently of the current supply to the second laser diodes.
- the laser diode array with first and second laser diodes of the same power and a different number of light sources for the two directions of polarization leads to a simplification of production technology and at the same time implements the basic setting for the distribution of the radiation intensity for the blue and excitation to be illuminated channels .
- the number of first laser diodes is at most five times the number of second laser diodes.
- a first embodiment is based on uniform components for generating radiation with a different orientation on the carrier. Consequently, the first laser diode and the second laser diode are structurally identical and accordingly the first laser housing and the second laser housing are designed to match, with each case having a housing axis that specifies the polarization direction. Therefore, the first laser housing assigned to the first light group are arranged on the carrier in such a way that their housing axes are perpendicular to those of the second laser housing for the second light group, so that the polarization directions are orthogonal.
- the first laser diode and the second laser diode differ with regard to the semiconductor layer sequence or the optical structure, so that a different polarization direction of the emitted radiation tion resulting from the interior design.
- the direction of polarization can be brought about by adjusting the optics on the laser housing.
- the use of different laser diode types leads to simplified wiring for the components on the carrier that then do not have to be rotated.
- the laser housings each accommodate a laser diode.
- a protective diode per laser housing.
- a microlens for collimating the divergent laser radiation can be assigned to each laser housing for a structural unit that is easier to assemble.
- a microlens array stationary with respect to the common support, spans the laser diode array as a whole. In this way, the laser diode and its associated laser housing can be created in a simplified manner in terms of manufacturing technology.
- a laser housing holds a plurality of laser diodes, which are advantageously of identical construction.
- the associated collimation optics can in turn be connected to the individual laser diodes or integrally with the laser housing.
- electrodes are led out of the respective laser housings.
- the wiring connected to the electrodes on the carrier is designed in such a way that laser diodes from different lighting groups can be externally controlled independently of one another. If there are several laser diodes per housing, they are preferably supplied with current together. For possible designs, further subgroups of the laser diode array are formed within a light group, for example rows or columns of laser diodes on the carrier, which emit electromagnetic radiation. delivery with a matching direction of polarization.
- an illumination unit comprises the laser diode arrangement described above.
- a polarization beam splitter for the lighting unit according to the invention, is arranged in a beam path emanating from the laser diode arrangement and is designed in such a way that the polarized electromagnetic radiation emitted by the first lighting group is directed with the first polarization direction into a beam path leading to the wavelength conversion element and the radiation emitted by the second lighting group polarized electromagnetic radiation with the second polarization direction is fed into a blue channel.
- the uniformity of the temperature distribution can additionally be improved by a common heat path formed by the carrier.
- a laser projection device with an imaging system and an illumination unit according to the invention is proposed. This is characterized in particular by a compact size and a simplified optics for the lighting unit.
- Fig. 1 shows a first embodiment of the laser diode arrangement according to the invention in a plan view.
- Fig. 2 shows a laser diode for the first embodiment of the laser diode arrangement according to the invention from FIG. 1 in cross section.
- Fig. 3 shows a cross section of a light source for a second embodiment of the laser diode arrangement according to the invention.
- Fig. 4 shows the arrangement of the light sources for the second embodiment of the laser diode arrangement according to the invention in a plan view.
- Fig. 5 shows the electrical wiring for the embodiment shown in FIG.
- Fig. 6 shows a laser projection device with an illumination system comprising a laser diode arrangement according to the invention.
- FIG. 1 shows a laser diode arrangement 1 according to the invention with a laser diode array 2 arranged on a common carrier 9 .
- a first lighting group 3 can be seen, which has the lights arranged in the first, third, fourth and last row first laser diodes 4.1, 4.n includes. These emit linearly polarized electromagnetic radiation with a first direction of polarization 12.
- a second lighting group 5 with the second laser diodes 6.1, .
- the first direction of polarization 12 and the second direction of polarization 13 are perpendicular to one another.
- First laser diodes 4.1, ..., 4.n and second laser diodes 6.1, ..., 6.m are used with a matching maximum optical output power, the number of first laser diodes N of the laser diode array 2 being at least twice the number of the second Laser diodes M corresponds, so that an asymmetrical radiation intensity for the emission in the two different directions of polarization 12, 13 for the same energization of the laser diodes 6.1, ..., 4.n; 6.1, ..., 6.m results. It is also advantageous if the number of first laser diodes N in the laser diode array 2 is limited to five times the number of second laser diodes M.
- a preferred embodiment of the first laser diode 4.1 arranged in a first laser housing 14 on a submount 10 is outlined in a cross-sectional view in FIG. Shown is a lateral emission of radiation and a beam deflection at a mirror 11 to form a vertical emission in the direction of the surface normal of the carrier 9.
- a microlens 8 connected to the first laser housing 14 is used to collimate the divergent laser radiation, with linearly polarized electromagnetic radiation being transmitted to the first Polarization direction 12 is released.
- the second laser housing 15 and the second laser diode 6.1, ..., 6.m accommodated therein are constructed identically for the first exemplary embodiment, with an arrangement on the carrier 9 with a rotation of the housing axis 18 being made by 90°, so that the second direction of polarization Direction 13 of the second lighting group 5 results, which is perpendicular to the first polarization direction 12.
- the electrical wiring 16 for the laser diode array 2 is created so that the current at the first laser diodes
- 6.1, ..., 6.m is continuously and independently adjustable.
- An electrode arrangement 17 is led out of the respective laser housing 14, 15 for this purpose.
- the laser diode array comprises 2 modules with multiple light sources.
- FIG. 3 shows a first laser housing 14 for accommodating the first laser diodes 4.3, . . .
- the interior of the first laser housing 14.1, 14.2 and the second laser housing 15.1 has a different structure, which is chosen such that the second polarization direction 13 is perpendicular to the first polarization direction 12.
- a microlens array 19 which is stationary in relation to the common carrier 9 and spans the laser diode array 2 as a whole is used for collimation.
- the electrode arrangement is used for separate and continuous adjustment of the energization of the two lighting groups 3, 5
- the refinement shown in FIG. 6 relates to an illumination unit 24 and its integration into a laser projection device 25.
- the illumination unit 24 comprises a polarization beam splitter 19 , a wavelength conversion element 20 and an overlay optics 21 .
- the polarization beam splitter 19 directs the radiation emanating from the laser diode arrangement 1 with the first polarization direction to a preferably rotating wavelength conversion element 20 which emits green or red fluorescence radiation 27 by means of the first fluorescence material 22 or the second fluorescence material 23 .
- the radiation component with the second polarization direction is fed into a blue channel 31 by the polarization beam splitter 19 .
- the fluorescent materials 22 , 23 are spatially separated from one another.
- a single, broadband emitting fluorescent material is used. This can be provided specifically for 3LCD systems in which not one, but three image generators (separated according to primary color) are provided and are irradiated with a continuously shining white light source.
- the beam paths of the primary colors can be separated (not shown) by wavelength-selective optics, for example dichroic mirrors.
- the fluorescence radiation 27 and the radiation from the blue channel 31 are combined in an illumination beam path 32 .
- the lighting unit 24 then transmits the radiation to an imaging system 26, which is connected to a controller 34 for projecting an image.
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Projection Apparatus (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280013638.1A CN116888841A (zh) | 2021-02-05 | 2022-02-04 | 激光二极管装置、照明单元和激光投影设备 |
JP2023544085A JP2024505832A (ja) | 2021-02-05 | 2022-02-04 | レーザダイオードアセンブリ、照明ユニットおよびレーザ投影装置 |
US18/262,794 US20240097407A1 (en) | 2021-02-05 | 2022-02-04 | Laser diode assembly, lighting unit and laser projection device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021102799.3 | 2021-02-05 | ||
DE102021102799.3A DE102021102799A1 (de) | 2021-02-05 | 2021-02-05 | Laserdiodenanordnung, beleuchtungseinheit und laserprojektionsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022167594A1 true WO2022167594A1 (de) | 2022-08-11 |
Family
ID=80625177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/052737 WO2022167594A1 (de) | 2021-02-05 | 2022-02-04 | Laserdiodenanordnung, beleuchtungseinheit und laserprojektionsvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240097407A1 (de) |
JP (1) | JP2024505832A (de) |
CN (1) | CN116888841A (de) |
DE (1) | DE102021102799A1 (de) |
WO (1) | WO2022167594A1 (de) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0722706A (ja) * | 1993-06-23 | 1995-01-24 | Sony Corp | 発光装置及びその視覚方法及びその駆動方法 |
JPH08181391A (ja) * | 1994-10-24 | 1996-07-12 | Nec Corp | 面発光レーザ及び面発光レーザアレイ及び光情報処理装置 |
DE102010003234A1 (de) | 2009-03-27 | 2011-09-29 | Casio Computer Co., Ltd. | Lichtquelleneinheit mit einer Laserlichtquelle und Projektor |
EP3028353A1 (de) * | 2013-08-02 | 2016-06-08 | Koninklijke Philips N.V. | Laservorrichtung mit einstellbarer polarisation |
US20190068936A1 (en) | 2017-08-31 | 2019-02-28 | Seiko Epson Corporation | Wavelength conversion element, light source device, and projector |
US20200301265A1 (en) | 2019-03-20 | 2020-09-24 | Hisense Laser Display Co., Ltd. | Laser projection apparatus |
DE112013004405B4 (de) | 2012-09-10 | 2020-10-08 | Mitsubishi Electric Corporation | Lichtquellenvorrichtung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10109977B2 (en) | 2015-07-28 | 2018-10-23 | Mitsubishi Electric Corporation | Laser light source device |
WO2020134220A1 (zh) | 2018-12-24 | 2020-07-02 | 青岛海信激光显示股份有限公司 | 激光器组件、激光光源和激光投影设备 |
-
2021
- 2021-02-05 DE DE102021102799.3A patent/DE102021102799A1/de active Pending
-
2022
- 2022-02-04 WO PCT/EP2022/052737 patent/WO2022167594A1/de active Application Filing
- 2022-02-04 US US18/262,794 patent/US20240097407A1/en active Pending
- 2022-02-04 CN CN202280013638.1A patent/CN116888841A/zh active Pending
- 2022-02-04 JP JP2023544085A patent/JP2024505832A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0722706A (ja) * | 1993-06-23 | 1995-01-24 | Sony Corp | 発光装置及びその視覚方法及びその駆動方法 |
JPH08181391A (ja) * | 1994-10-24 | 1996-07-12 | Nec Corp | 面発光レーザ及び面発光レーザアレイ及び光情報処理装置 |
DE102010003234A1 (de) | 2009-03-27 | 2011-09-29 | Casio Computer Co., Ltd. | Lichtquelleneinheit mit einer Laserlichtquelle und Projektor |
DE112013004405B4 (de) | 2012-09-10 | 2020-10-08 | Mitsubishi Electric Corporation | Lichtquellenvorrichtung |
EP3028353A1 (de) * | 2013-08-02 | 2016-06-08 | Koninklijke Philips N.V. | Laservorrichtung mit einstellbarer polarisation |
US20190068936A1 (en) | 2017-08-31 | 2019-02-28 | Seiko Epson Corporation | Wavelength conversion element, light source device, and projector |
US20200301265A1 (en) | 2019-03-20 | 2020-09-24 | Hisense Laser Display Co., Ltd. | Laser projection apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN116888841A (zh) | 2023-10-13 |
DE102021102799A1 (de) | 2022-08-11 |
JP2024505832A (ja) | 2024-02-08 |
US20240097407A1 (en) | 2024-03-21 |
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