WO2019238260A1 - Verfahren und systemanordnung zum einstellen einer konstanten wellenlänge - Google Patents
Verfahren und systemanordnung zum einstellen einer konstanten wellenlänge Download PDFInfo
- Publication number
- WO2019238260A1 WO2019238260A1 PCT/EP2019/000106 EP2019000106W WO2019238260A1 WO 2019238260 A1 WO2019238260 A1 WO 2019238260A1 EP 2019000106 W EP2019000106 W EP 2019000106W WO 2019238260 A1 WO2019238260 A1 WO 2019238260A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- emitting diode
- wavelength
- temperature
- current value
- Prior art date
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/28—Controlling the colour of the light using temperature feedback
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
Definitions
- the present invention is directed to a method which, with little technical effort, makes it possible to set a constant wavelength in the case of a light-emitting diode in such a way that a constant color of the light-emitting diode is established for a human viewer by means of the unarmed eye. Furthermore, the present invention is directed to a correspondingly configured system arrangement and to a computer program product with control commands which execute the method or operate the system arrangement.
- WO 2017/162 323 A1 shows an efficient control arrangement and a control method which make it possible to provide particularly efficient data transmission, in particular for light-emitting diode control units.
- the publication is also directed to a corresponding protocol which causes control units to carry out the corresponding method steps.
- WO 2017/162 324 A1 shows a method and a device for bidirectional communication between a command unit and a plurality of LED control units connected to it. This makes it possible to send control commands to a plurality of series-connected LED control units at high speed or to return execution results from these control units to a command unit.
- W ⁇ 2017/153 026 A1 shows a method and a device for brightness compensation of a light-emitting diode, whereby a constant helper is always used. Liability of the light-emitting diode is achieved regardless of the temperature fluctuation.
- PWM pulse width modulation
- control circuits are known through which the light-emitting diodes are regulated to an adjustable setpoint, the setpoint being adjustable by a controller. Dimming of light emitting diodes takes place according to known methods directly by dimming the
- Control logics for regulating the current supply to the light-emitting diode are also known as a function of a temperature of the light-emitting diode.
- light-emitting diodes are used in which they should at least not be disadvantageous with regard to incandescent lamps. While light bulbs can be easily dimmed in terms of their brightness, methods are known with regard to light-emitting diodes which, for example, control these light-emitting diodes by means of a predetermined control pattern and thereby enable optical dimming. In contrast to this, however, it is often desirable for a light-emitting diode to be used, for example an increasing ambient temperature must also be made lighter. This is the case since LEDs typically have a luminous behavior which reduces the emitted luminosity as a function of an increasing temperature value.
- light-emitting diodes which are typically provided as red, green or blue-emitting light-emitting diodes, are susceptible to fluctuations in brightness or color with regard to temperature development. It is therefore disadvantageous according to the prior art that the color variations, depending on the temperature development or brightness variations, can turn out to be so strong that they can be recognized by the human eye and thus result in undesired optical effects. Such optical effects can relate to comfort functions of a vehicle, for example, and application scenarios also provide that the light emitting diodes emit a safety function. For example, light-emitting diodes are also used as optical warning signals and the disadvantage of brightness or color variations can be safety-critical.
- a method for setting a constant wavelength of a light-emitting diode comprising controlling the light-emitting diode by means of a preset current value, measuring an actually prevailing temperature of a control unit arranged in the immediate vicinity of the controlled light-emitting diode, providing an empirically determined wavelength variation of the light-emitting diode in Dependency of the temperature of the light-emitting diode and adjusting the preset current value as a function of the actually prevailing temperature and the empirically determined wavelength variation for setting the constant wavelength of the light-emitting diode.
- method steps can be carried out iteratively and / or in a different order.
- method steps can have further sub-steps.
- the control of the light-emitting diode is typically carried out iteratively and the prevailing temperature is measured iteratively at the control unit.
- an empirically determined wavelength variation is made available.
- the preset current value is adjusted in a specific cycle or within preset intervals.
- a constant wavelength of a light-emitting diode is set, since the error rate of the light-emitting diode is recognized and then the current value is set accordingly.
- the constant wavelength is an essentially constant wavelength, the reference point of the constant wavelength being the human eye.
- the wavelength is not constant, but is adjusted in such a way that it is constant with respect to the unarmed human eye.
- a constant color value for the human viewer is established by means of the constant wavelength.
- the constant wavelength is merely an essentially constant wavelength that varies slightly.
- a light-emitting diode can be in the form of a red, green, blue or white luminous or emitting light-emitting diode. It is known to combine these different individual light-emitting diodes into light-emitting diode units, so that, for example, three or four individual light-emitting diodes form one light-emitting diode unit due to the design.
- further technical devices are to be provided which, for example, control the individual light-emitting diodes in such a way that a wavelength or a brightness is obtained.
- the proposed control units are used for this purpose, which indirectly apply a certain current intensity to the light-emitting diodes or carry out a pulse width modulation.
- the brightness or luminosity of each individual light-emitting diode is set by means of pulse width modulation and then the wavelength is set on the basis of the current value.
- the proposed current value is therefore the current value by means of which the light-emitting diode is controlled. This does not prevent that at least temporarily no current is provided as part of the pulse width modulation.
- This provision of current takes place as part of the activation of the light-emitting diode by means of a preset current value.
- This method step also takes place in accordance with the prior art, with the disadvantage that the constant preset current value leads to a wavelength variation, which is apparent to the viewer because the color of the light-emitting diode changes. This takes place due to the changing temperature conditions within the LED.
- the preset current value is typically stored in a memory unit of the light-emitting diode unit or is provided by the control unit.
- an actually prevailing temperature of a control unit arranged in the immediate vicinity of the activated light-emitting diode is measured.
- the temperature does not have to be measured directly on the light-emitting diode, but that the control unit can be used for this.
- the proposed method takes this distance into account in one aspect and varies the current value accordingly.
- control unit Since the control unit is arranged in the immediate vicinity of the light-emitting diode, a conclusion regarding the temperature of the light-emitting diode can be drawn at runtime.
- An immittable proximity is to be interpreted in such a way that the proximity is essentially unmittable, such that only one layer, for example as will be described later, is arranged between the measuring sensor and the control unit. This means that it can be interpreted as “unmittable” in such a way that no other active components are installed. Consequently, only passive components, such as connection layers or heat-conducting layers, are arranged between the light-emitting diode and the control unit.
- the feature in the "immediate" vicinity is optional in that no further active, heat-generating units are arranged between the light-emitting diode and the control unit.
- the method step can thus also be carried out in such a way that an actually prevailing temperature is measured by a control unit arranged in the vicinity of the controlled light-emitting diode. In particular, distances that are less than one millimeter are also understood to be immediate.
- An empirically determined wavelength variation of the light-emitting diode is then provided as a function of the temperature of the light-emitting diode.
- the empirically determined wavelength variation indicates the extent to which the wavelength of the light-emitting diode changes as the temperature rises and falls. This is also referred to as the error rate of the light emitting diode and specifies a technical value that corresponds to a delta of the value of the wavelength that arises when the temperature of the light emitting diode rises or falls. This empirical value can be stored in a data memory.
- the preset current value is adjusted.
- the method thus branches iteratively back into a first method step, which provides for driving the light-emitting diode.
- the light emitting diode will controlled in such a way that the constant wavelength or the substantially constant wavelength of the light-emitting diode is established.
- the wavelength variation is compensated for via the temperature, and the current value is set in such a way that the color value of the light-emitting diode is always constant.
- the actually prevailing temperature is measured at the control unit and not at the light-emitting diode, and that the empirically determined wavelength variation provided relates to a temperature of the light-emitting diode. It is therefore advantageous to include a compensation factor here, which takes into account that measurements are not actually being made directly on the light-emitting diode, but rather on the control unit arranged. Consequently, it is possible according to the invention to propose an alternative design and also to operate the method accordingly.
- the light-emitting diode is actually driven on the basis of this adapted current value. This ensures over time or the temperature development that the light emitting diode emits a constant wavelength.
- the method is carried out in each case for a red, blue, green or white-emitting light-emitting diode.
- This has the advantage that not only the colors can be set by means of the proposed method, but rather the luminosity can also be adapted by means of a white-emitting light-emitting diode, so that no separate method has to be used for brightness compensation.
- the brightness of the light-emitting diode can also be controlled with little technical effort.
- the method is carried out iteratively in such a way that the adjustment of the preset current value takes place essentially every 2 seconds.
- the preset current value specifies a current pulse of pulse width modulation. This has the advantage that the preset current value can be switched on and off as part of the pulse width modulation, so that the brightness can also be varied. Thus, as part of the control of the light-emitting diode by means of a preset current value, no current can be temporarily applied and the pulse width modulation can thereby be implemented.
- the adjustment of the preset current value is carried out by means of a stored error function.
- a function is empirical It can be determined which multiplies or adds the inverse of the error with respect to the wavelength to the current intensity, so that the error which arises, that is to say the deviation in the wavelength, is canceled or compensated for.
- the error function thus determines a value by which the preset current value has to be adjusted so that the output wavelength is created again.
- the error function provides a compensation value which compensates for the wavelength variation of the light-emitting diode.
- the compensation value is present as a compensation factor and / or compensation sum.
- This has the advantage that a compensation value can be multiplied and / or added up, whereby a combination of both options is also proposed according to the invention.
- the current value can thus be adjusted at any time in such a way that the desired constant wavelength is set or the error in the deviation of the wavelength is compensated for.
- the error function determines the temperature of the light-emitting diode as a function of the actually prevailing temperature of the control unit.
- the temperature value does not have to be taken directly from the light-emitting diode, but rather, according to the invention, the temperature of the control unit is measured and then the temperature of the light-emitting diode is inferred.
- an alternative design can be accomplished and empirical values can be consulted which indicate at which temperature of the control unit which values of the temperature at the light-emitting diode prevail.
- conclusions can be drawn about the wavelength based on the temperature, which in turn allows the current value to be adjusted in such a way that the desired wavelength is in turn set. This is the case because, for technical reasons, the wavelength varies with the prevailing temperature.
- the adjustment of the preset current value takes place when an actual wavelength deviates from the target wavelength by more than a threshold value.
- a threshold value can be defined which corresponds, for example, to the accuracy of the unarmed human eye. If this threshold value is undershot or exceeded, the current value is adjusted and the underlying hardware components can be designed particularly efficiently. This is the case because not every deviation has to be compensated for immediately, but rather the threshold value can be chosen to be so large that the variation is not visible to the human eye.
- the threshold value can also take into account the underlying hardware, which in turn can be designed efficiently.
- the empirically determined wavelength variation specifies a characteristic curve of the light-emitting diode.
- the characteristic curve describes characteristics of the light-emitting diode, and thus a wavelength variation depending on the temperature can also be provided, which is then corrected according to the invention.
- the immediate vicinity is less than 1 mm. This has the advantage that the underlying unit is chosen to be so small that it can actually be said to be in close proximity, but according to the invention it was found that larger deviations are difficult to calculate. A proximity of less than 1 mm typically does not lead to a large falsification with regard to the temperature, and the temperature of the control unit can be the basis of the method according to the invention instead of the temperature of the light-emitting diode.
- the immediate proximity is set by means of a thickness of an adhesive layer, a silicone layer, a polymer layer, a heat-conducting layer, an aluminum layer and / or a copper layer.
- An air gap or casting resins can also be used for this purpose.
- control unit is provided as a controller, a controller chip, a logic circuit, a logic gate or a microcontroller.
- the light-emitting diode can be controlled by means of a pulse-width modulation by means of a corresponding control unit, and in particular the light-emitting diode is controlled according to the invention by means of a preset current value, which can be regulated, for example, by the control unit.
- a system arrangement for setting a constant wavelength of a light-emitting diode comprising a control unit set up to control the light-emitting diode by means of a preset current value, at least one measuring sensor set up to measure an actually prevailing temperature of the control unit arranged in the immediate vicinity of the controlled light-emitting diode , an interface unit set up to provide an empirically determined wavelength variation of the light-emitting diode as a function of the temperature of the light-emitting diode, and a compensation interface set up to adapt the preset current value as a function of the actually prevailing temperature and the empirically determined wavelength variation to set the constant wavelength of the light-emitting diode.
- the object is also achieved by a computer program product with control commands which execute the proposed method or operate the proposed system arrangement.
- the method is set up to operate the proposed system arrangement and the system arrangement is set up to execute the proposed method.
- the method thus comprises method steps which can be functionally simulated on the basis of the structural features of the system arrangement.
- the system arrangement includes functional components that create a function in accordance with the proposed method steps.
- the computer program product serves both to carry out the method steps and to operate the system arrangement.
- FIG. 5 shows a schematic flow diagram of the proposed method for setting a constant wavelength according to the present invention.
- 1 shows a diagram on the left-hand side, the temperature of the light-emitting diode being marked on the x-axis and the resulting wavelength on the y-axis which is emitted by the light-emitting diode.
- a constant wavelength is typically required, but this disadvantageously varies with temperature.
- the wavelength increases with increasing temperature, which leads to the viewer perceiving a color variation, which is so is not desired.
- An analogous example is shown on the right for a specific value. The object of the present invention is to compensate for this variation in the wavelength.
- 2 shows in the left diagram a current which is plotted on the x-axis and a wavelength which is plotted on the y-axis.
- the wavelength varies depending on the current provided, and as a result the wavelength decreases with increasing current.
- a characteristic curve development is also shown on the right-hand side, the wavelength being plotted on the y-axis and the current on the x-axis.
- FIG. 3 shows an aspect of the present invention, namely that it can be determined at which temperature which wavelength prevails and for this purpose it can also be calculated how a corresponding error function should be designed. For example, 20 ° C and 110 ° C are taken into account.
- a corresponding diagram is shown on the right, which in turn plots the current value provided on the x-axis and the wavelength on the y-axis.
- these two diagrams are now combined according to FIG. 3, and the rising wavelength on the left-hand side as a function of the temperature is eliminated with the falling wavelength on the right-hand side as a function of the current value provided.
- the two diagrams are therefore combined with one another, and the current value increases as the temperature rises.
- the wavelength increases with the temperature, which is compensated according to the invention in such a way that the error function increases the set current value in such a way that the wavelength on the left is reduced in accordance with the increase on the right.
- FIG. 4 shows the proposed system arrangement, a temperature sensor being arranged at the top left, which measures the temperature at the control unit or in the immediate vicinity of the light-emitting diode and then transmits the measured value in an analog manner to an analog-to-digital converter.
- This component then provides the digital measured value to the error function component.
- a so-called one-time programmable module is arranged on the left-hand side, that is to say a non-volatile memory, also referred to as OTP for short.
- the error function component then sends the value to be set to a digital-to-analog converter, which then addresses the light-emitting diode.
- FIG. 5 shows, in a schematic flow diagram, the proposed method for setting a constant wavelength of a light-emitting diode, comprising driving 100 of the light-emitting diode by means of a preset current value, measuring 101 an actually prevailing temperature of a temperature in the immediate vicinity of the driven 100 light-emitting diode.
- control unit providing 102 an empirically determined wavelength variation of the light-emitting diode as a function of the temperature of the light-emitting diode and adjusting 103 the preset current value as a function of the actually prevailing temperature and the empirically determined wavelength variation for setting 104 the constant wavelength of the light-emitting diode.
- At least one sensor is provided for measuring the temperature value at at least one measuring location.
- Several measurement locations are suitable for this, for example a measurement location on exactly one light-emitting diode, a measurement location on each light-emitting diode, a measurement location on a microcontroller that is connected to a light-emitting diode, or a measurement location in the immediate vicinity of a light-emitting diode.
- the proposed method is used in the case of a plurality of connected light-emitting diodes. It is possible that, for example, several light emitting diodes are connected in series. If this plurality of light emitting diodes is installed in an automobile, different temperatures may prevail at different locations.
- the light-emitting diodes can not only heat themselves, but that temperature can be emitted by adjacent components. It is thus possible according to the invention to take this into account and to determine a temperature value at several measuring locations.
- An immediate environment describes an environment which allows a conclusion to be drawn about the temperature of the light-emitting diode.
- this temperature need not be able to be determined directly on the light-emitting diode, but a temperature sensor can be spaced from the light-emitting diode in such a way that a temperature input from neighboring components is negligible. In particular, this means that there must be no physical contact in the sense of touching the temperature sensor and the light-emitting diode.
- the light-emitting diode is present as a triplet of three light-emitting diode units, and the light-emitting diode units each emit a different color.
- Individual LEDs are also possible according to the invention. This has the advantage that colored LEDs can be used. In particular, it is possible according to the invention to continue to use conventional LEDs and only to control the current regulator of precisely these LEDs in such a way that the advantage according to the invention is achieved. Furthermore, the proposed method has the advantage that the brightness compensation can take place independently of the color setting of the light-emitting diode.
- a light-emitting diode unit is present as a semiconductor component or as any light-emitting component. Sending out different colors, or light in different wavelengths, serves to set a predetermined color value.
- a memory module provides a plurality of temperature values, each of which is assigned a current value.
- This has the advantage that a multiplicity of temperature values can be taken into account and the temperature values can be predetermined with respect to the current values in such a way that the same brightness value of the light-emitting diode is always set.
- the number of current value / temperature value pairs can be determined in a preparatory process step.
- the memory module or the storage of the current values is to be interpreted in such a way that any type of memory module or storage is possible.
- the memory module thus does not have to be set up so dynamically that it describes during a runtime, that is to say while the current controller is being driven. must be cash. Rather, storage only requires the introduction of the corresponding information in some way into a hardware module. It may also be necessary not to provide a single memory module, but to provide additional components for this purpose, which make it possible to provide the current value.
- a light-emitting diode is to be understood as a device which can also have further LED chips.
- the light-emitting diodes according to the invention in turn consist of further light-emitting diode units or semiconductor chips.
- the known red, green and blue light-emitting diode units can be used, which are set with regard to the so-called RGB color space.
- These individual light-emitting diode units are combined in a light-emitting diode housing in such a way that their light is combined to a predetermined color value. For example, it is possible to set a mixing ratio in such a way that the LED emits a total of white light.
- any desired colored light can also be set by suitable control of the individual components. In this way, for example, color transitions can also be generated.
- the so-called multi-LED components can be used, for example.
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Semiconductor Lasers (AREA)
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Abstract
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Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19720362.3A EP3707967B1 (de) | 2018-06-15 | 2019-04-01 | Verfahren und systemanordnung zum einstellen einer konstanten wellenlänge |
US15/733,601 US11304278B2 (en) | 2018-06-15 | 2019-04-01 | Method and system configuration for setting a constant wavelength |
KR1020207018393A KR102429621B1 (ko) | 2018-06-15 | 2019-04-01 | 일정한 파장을 설정하기 위한 방법 및 시스템 배열 |
CN201980012713.0A CN111788867B (zh) | 2018-06-15 | 2019-04-01 | 设定恒定波长的方法和系统装置 |
CA3086002A CA3086002C (en) | 2018-06-15 | 2019-04-01 | Method and system arrangement for setting a constant wavelength |
SG11202008550SA SG11202008550SA (en) | 2018-06-15 | 2019-04-01 | Method and system configuration for setting a constant wavelength |
ES19720362T ES2946591T3 (es) | 2018-06-15 | 2019-04-01 | Procedimiento y disposición de sistema para ajustar una longitud de onda constante |
EP23154753.0A EP4199651A1 (de) | 2018-06-15 | 2019-04-01 | VERFAHREN UND SYSTEMANORDNUNG ZUM EINSTELLEN EINER KONSTANTEN 
WELLENLÄNGE |
JP2020534455A JP7148169B2 (ja) | 2018-06-15 | 2019-04-01 | 一定の波長を設定するための方法およびシステム構成 |
JP2022085221A JP7224076B2 (ja) | 2018-06-15 | 2022-05-25 | 一定の波長を設定するための方法およびシステム構成 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018004826.9 | 2018-06-15 | ||
DE102018004826.9A DE102018004826A1 (de) | 2018-06-15 | 2018-06-15 | Verfahren und Systemanordnung zum Einstellen einer konstanten Wellenlänge |
Publications (1)
Publication Number | Publication Date |
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WO2019238260A1 true WO2019238260A1 (de) | 2019-12-19 |
Family
ID=66334342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2019/000106 WO2019238260A1 (de) | 2018-06-15 | 2019-04-01 | Verfahren und systemanordnung zum einstellen einer konstanten wellenlänge |
Country Status (10)
Country | Link |
---|---|
US (1) | US11304278B2 (de) |
EP (2) | EP3707967B1 (de) |
JP (2) | JP7148169B2 (de) |
KR (1) | KR102429621B1 (de) |
CN (1) | CN111788867B (de) |
CA (1) | CA3086002C (de) |
DE (1) | DE102018004826A1 (de) |
ES (1) | ES2946591T3 (de) |
SG (1) | SG11202008550SA (de) |
WO (1) | WO2019238260A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11304278B2 (en) | 2018-06-15 | 2022-04-12 | Inova Semiconductors Gmbh | Method and system configuration for setting a constant wavelength |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020132948A1 (de) | 2020-12-10 | 2022-06-15 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches modul und verfahren zur herstellung eines optoelektronischen moduls |
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DE102018004826A1 (de) | 2019-12-19 |
EP4199651A1 (de) | 2023-06-21 |
CA3086002A1 (en) | 2019-12-19 |
KR102429621B1 (ko) | 2022-08-04 |
CN111788867A (zh) | 2020-10-16 |
SG11202008550SA (en) | 2020-10-29 |
CA3086002C (en) | 2023-09-26 |
ES2946591T3 (es) | 2023-07-21 |
US20210368601A1 (en) | 2021-11-25 |
JP2022105677A (ja) | 2022-07-14 |
US11304278B2 (en) | 2022-04-12 |
JP7148169B2 (ja) | 2022-10-05 |
JP2021520025A (ja) | 2021-08-12 |
KR20200090882A (ko) | 2020-07-29 |
EP3707967A1 (de) | 2020-09-16 |
EP3707967B1 (de) | 2023-04-26 |
CN111788867B (zh) | 2023-05-30 |
JP7224076B2 (ja) | 2023-02-17 |
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