WO2022175028A1 - Verfahren zum betreiben eines hochauflösenden projektionsscheinwerfers und projektionsscheinwerfersystem für ein kraftfahrzeug - Google Patents
Verfahren zum betreiben eines hochauflösenden projektionsscheinwerfers und projektionsscheinwerfersystem für ein kraftfahrzeug Download PDFInfo
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- WO2022175028A1 WO2022175028A1 PCT/EP2022/051571 EP2022051571W WO2022175028A1 WO 2022175028 A1 WO2022175028 A1 WO 2022175028A1 EP 2022051571 W EP2022051571 W EP 2022051571W WO 2022175028 A1 WO2022175028 A1 WO 2022175028A1
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- Prior art keywords
- masking
- led
- light source
- projected
- graphic
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims abstract description 72
- 230000000873 masking effect Effects 0.000 claims abstract description 38
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- 238000004590 computer program Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 230000003936 working memory Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3138—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using arrays of modulated light sources
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1407—General lighting circuits comprising dimming circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/10—Protection of lighting devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3144—Cooling systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
- B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
- F21W2102/14—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2105/00—Combinations of lighting devices covered by codes F21W2102/00 – F21W2104/00
-
- 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]
- H05B45/10—Controlling the intensity of the light
- H05B45/18—Controlling the intensity of the light using temperature feedback
Definitions
- the invention relates to a method for operating a high-resolution projection headlight and a projection headlight system for a motor vehicle and a computer program and a computer program product therefor.
- High-resolution projection systems with separately controllable and actively illuminating pixel light sources represent the next step in the field of advanced lighting systems in automotive technology.
- pixel-based illuminating elements are able to display symbols, geometries and sharp as well as to project well accentuated light distribution patterns in the environment of a motor vehicle.
- HDSSL high definition solid state light source
- Actively illuminated pixels are provided with the light-emitting diodes arranged in rows and columns, each of which can have an area of the order of magnitude of, for example, 100 ⁇ m ⁇ 100 ⁇ m.
- the object of the invention is to provide an alternative method and an alternative device with which thermal defects in such HDSL chips can be avoided without the brightness contrast between a projection and an environment being impaired.
- the object is achieved by a method for operating a high-resolution projection headlight for a motor vehicle.
- the high-resolution projection headlight includes an active LED pixel matrix light source, which has an LED matrix monolithically integrated on a semiconductor chip with a large number of light-emitting diode-based pixels and a driver circuit for separately controlling each individual pixel within the LED matrix.
- an up-to-date digital image of a sequence of images from graphics data is continuously rasterized with at least one graphics object and made available for image reproduction with the projection headlight.
- a value for a thermal load on the LED pixel matrix light source is continuously determined, so that when rasterizing a current digital image, the surface areas of graphic objects to be projected are at least partially masked and modulated if the value for the thermal load exceeds a limit.
- One insight behind the method according to the invention is that a large number of simultaneously activated pixels within a contiguous area on an HDSLP chip area causes a high local temperature input.
- One idea is therefore to reduce the thermal power losses primarily in these areas on the chip of the LED matrix.
- lines of the current digital image of the graphic objects to be projected can be rasterized with a predetermined line width.
- Another idea is that the pixels activated on the chip surface for the projection of corresponding lines cause a lower power loss per chip surface than the surface areas. Especially with fine lines with a width of few pixels, there is no need to limit power or power loss for thermal protection.
- a point mask can be provided as masking, so that when the surface areas of the graphic objects to be projected are rasterized, one pixel is hidden from each two neighboring pixels of the current digital image and one pixel each corresponds to the respective graphic data of the graphic objects to be projected is rasterized.
- the masking can essentially be understood as a data set that is stored in the graphics controller and with which the graphics data for the surface areas of the graphics objects are modulated when a current digital image is rasterized. According to the further education is provided to deactivate every second pixel within a rastered area to halve the thermal power loss density in the LED matrix during image playback in the corresponding areas on the chip of the LED matrix.
- the dot mask thus provides a chessboard-like masking pattern in which every second pixel is masked out in rows and columns and deactivated during image reproduction.
- a chessboard-like masking pattern ensures a homogeneous temperature input in relation to the illuminated surface areas of the LED matrix.
- the second masking pattern can be used to provide an inverse masking to the first masking pattern.
- the temperature input is distributed even more evenly in relation to the chip surface of the LED matrix.
- the object is achieved by a projection headlight system for a motor vehicle with a graphics controller and at least one high-resolution projection headlight.
- the high-resolution projection headlight has an active LED pixel matrix light source, one on a semiconductor chip monolithically integrated LED matrix with a large number of light-emitting diode-based pixels and a driver circuit for separately controlling each individual pixel within the LED matrix.
- the graphics controller has a computing unit and a storage device, with graphics data for at least one graphic object to be projected and at least one masking data set being stored in the storage device.
- the arithmetic unit is designed to modulate the graphic data with the masking data record in such a way that when rasterizing a current digital image for projection with the high-resolution projection headlight, at least partial masking takes place in surface areas of the graphic objects to be projected.
- the graphics controller can also be set up to determine a thermal load on the LED pixel matrix light source.
- the graphic data can thus be modulated and the surface areas can be masked at least partially depending on the thermal load on the LED pixel matrix light source.
- the object is achieved by a computer program which, when it is run on a computing unit within a graphics controller, instructs the respective computing unit to carry out the method.
- the object is achieved by a computer program product with a program code for carrying out the method, which is stored on a medium that can be read by a computer.
- FIG. 1 shows a motor vehicle with a high-resolution projection headlight
- FIG. 2 shows an active LED pixel matrix light source of the high-resolution projection headlight
- FIG. 3 shows a roadway with a motor vehicle and a high-resolution light distribution pattern
- FIG. 4 shows a roadway with a motor vehicle and a modulated and at least partially masked light distribution pattern
- FIG. 5 shows a method sequence for rastering a digital image for image reproduction with an HD projection headlight
- FIG. 6 shows a first and second image reproduction of the HD projection headlight
- FIG. 7 shows a sequence of steps for rasterizing a current digital image.
- FIG. 1 is a motor vehicle 3 with a high definition (engl high definition,
- the HD projection headlight 1 can combine ver different light sources with associated optical elements for different light functions in a common housing.
- An ordinary passenger car (car) has a front lighting system with at least one right and one left headlight that provide at least one low beam and one high beam. Both main headlights are activated in a synchronized manner by a common headlight control unit 2 .
- At least one of the two main headlights is designed as an HD projection headlight 1, which, in addition to low beam and high beam devices, also has a high-resolution projection module with which an image 4 with one or more graphic objects, such as symbols, characters, auxiliary lines or be any other geometric structures can be projected onto a road surface in front of the motor vehicle 3.
- an HD projection headlight 1 which, in addition to low beam and high beam devices, also has a high-resolution projection module with which an image 4 with one or more graphic objects, such as symbols, characters, auxiliary lines or be any other geometric structures can be projected onto a road surface in front of the motor vehicle 3.
- the high-resolution projection module has an active LED pixel matrix light source 10, which is shown by way of example in FIG.
- the active LED pixel matrix light source 10 essentially comprises two semiconductor chips.
- a multiplicity of light-emitting diodes are monolithically integrated on a first semiconductor chip and are arranged next to one another in an m ⁇ n LED matrix 11, ie in rows and columns.
- a second semiconductor chip contains an integrated driver circuit 12 for driving each individual light-emitting diode within the LED matrix 11.
- the driver circuit 12 has a first circuit block 121 with a number of m ⁇ n transistors and forms a contact field in the metallization level above the first circuit block 121.
- the first semiconductor chip with the LED matrix 11 is arranged fixed by means of flip-chip bonding on the contact field of the second semiconductor chip.
- Each transistor of the integrated driver circuit 12 is assigned to a light-emitting diode of the LED matrix 11 in each case.
- the light-emitting diodes each represent an actively lit pixel of the LED matrix 11.
- Temperature sensors can also be provided in the first circuit block 121, with which the chip temperature of the first and second semiconductor chips connected to one another can be detected.
- Control logic is arranged in a second circuit block 122 and communicates with a graphics controller 20 via a data connection 21 .
- An image data signal can be received by the graphics controller 20, with which the individual transistors in the first circuit block are individually driven in rows and columns.
- Each associated light-emitting diode can be operated with different brightness levels using pulse width modulation (PWM).
- PWM pulse width modulation
- the active LED pixel matrix light source 10 also has a switching regulator 13 which provides a constant current source for the light emitting diodes of the LED matrix 11 .
- the power of the constant current source can be regulated by means of a further pulse width modulation (PWM).
- PWM pulse width modulation
- FIG. 1 A possible application example for the HD projection headlight 1 with the active LED pixel matrix light source 10 is shown in FIG.
- Motor vehicle 3 is driving in the right lane of a roadway.
- a high-resolution image 4 or a light distribution pattern is projected onto the road with the HD projection headlight 1 at a specific distance in front of the motor vehicle 3 .
- the image 4 contains a rectangular structure that is projected onto a road ahead of the motor vehicle 3 .
- the width, ie in the direction transverse to the roadway, of this rectangular structure projected as image 4 essentially corresponds to the width of motor vehicle 3 better assess an upcoming lane.
- Such an assistance function can be particularly helpful in narrow lanes, which can occur, for example, at road construction sites. Looking at the active LED pixel matrix light source 10 outlined in FIG.
- the chip with the LED matrix 11 has a large coherent luminous area, so that there is a high power density within the corresponding chip area. This results in a high thermal density within the luminous area in the center of the chip. There is a risk of thermal damage to the active LED pixel matrix light source 10, particularly if such an image is reproduced over a longer period of time.
- the prior art it is therefore provided to monitor the temperatures within the active LED pixel matrix light source 10 by sensors. If a temperature limit is exceeded, the power of the constant current source for supplying electrical energy to the light ions within the LED matrix 11 can be regulated down by means of the PWM. With the reduction in the electrical power supply, the thermal power loss within the LED matrix 11 is also reduced, so that the active LED pixel matrix light source 10 is protected from thermal damage. Unfortunately, when the power supply is turned down, the brightness of all the luminous pixels of the LED matrix 11 is also dimmed down, so that the Bind 4 projected onto the road appears darker overall and has less contrast with the surroundings.
- one goal is not to reduce the electrical supply power for the entire semiconductor chip with the LED matrix 11 and thus for all pixels equally, but rather to specifically reduce the thermal power loss density in critical areas on the chip area with the LED - Reduce Matrix 11.
- the contour of the rectangular structure can and should be projected onto the asphalt with full illuminance, while the inner surface area projected as image 4 is reduced in brightness as soon as a limit value of a chip temperature is reached, for example.
- the active LED pixel matrix light source 10 outlined in FIG. 4, it becomes clear that a closed line with activated pixels lights up in the edge area of the rectangular structure to be projected.
- a chessboard-like pattern with luminous and non-luminous light-emitting diodes of the LED matrix 11 can be seen in the area of the projecting structure.
- One idea behind this is to reduce the number of pixels of the LED matrix 11 that are simultaneously illuminated in a coherent surface area, see above that averaged over the surface area and over time, less power loss and waste heat is entered into the semiconductor chips of the active LED pixel matrix light source 10 .
- the pixels that represent an outer line of the structure to be projected are not reduced in their luminosity.
- the image 4 projected onto the road has an unchanged high contrast to the unlit outer environment, while the heat loss power density in the LED matrix 11 can be reduced by almost half.
- graphics controller 20 receives current graphics data with at least one graphics object or loads it from a data memory.
- the graphic object or objects can be present as pixel and/or vector graphic data.
- the graphic controller 20 checks whether a thermal load limit has been reached for the active LED pixel matrix light source 10 or will be achieved.
- the thermal load limit of the active LED pixel matrix light source 10 can be determined in various ways. On the one hand, temperature data from the control logic of the second circuit block 122 could be received via the data connection 21 and compared with a temperature limit value stored in the graphics controller 20 . Alternatively, a thermal load can be calculated from a history of rasterized digital images that have been rasterized within a defined time interval before a current digital image and reproduced with the HD projection headlight 1 . I.e. a thermal power loss entered into the active LED pixel matrix light source 10 could be estimated via the number and duration of the luminous pixels.
- a current digital image is rasterized from the current pixels and/or vector graphics data, which for image reproduction is adapted to the resolution of the LED Matrix 11 is adapted and can be transmitted as an image signal via the data connection 21 to the control logic of the active LED pixel matrix light source 10 of the HD projection headlight 1 .
- the pixel and/or vector graphics data are used graphic objects present are processed according to a sequence of steps 130 .
- FIG. 7 explains the sequence of steps 130 as an example.
- Current graphic data representing a symbol 50 to be projected in front of motor vehicle 3 are stored in a working memory of graphic controller 20 .
- the symbol 50 is split into polylines 51 and surface areas 52.
- the lines 51 of the symbol 50 are rasterized in a second partial step 132 with a line width 62 determined beforehand for the resolution of the LED matrix 11 .
- the surface areas 52 of the symbol 50 for the resolution of the LED matrix 11 are rasterized.
- a dot mask 60 is provided for this purpose, which is kept as a data record in the graphics controller 20 and with which every second pixel can be masked in a chessboard-like structure according to the resolution of the LED matrix 11 .
- the surface areas 52 are modulated with the point mask 60 so that each of the masked pixels is deactivated and thus only every second pixel in the rastered surface areas 54 is active.
- an inverse dot mask 61 is provided by the graphics controller 20, so that it is possible to alternately switch between the dot mask 60 and the inverse dot mask 61 for rasterizing a sequence of images.
- the rastered polylines 53 and the rastered surface areas 54 are superimposed in a last partial step 134 to form a rastered digital image 55 .
- the rastered digital image 55 can be transmitted as an image signal via the data connection 21 to the control logic of the active LED pixel matrix light source 10 of the HD projection headlight 1 .
- FIG. 6a shows an image reproduction with the HD projection headlight 1 using the method described above.
- the thermal losses in the active LED pixel matrix light source 10 only the surface areas of a symbol are reduced in brightness by about half the pixels in an image sequence alternating in time and location.
- the lines of the symbol shine with maximum brightness, so that a maximum contrast to the environment is achieved.
- FIG. 6b shows an image reproduction of the symbol when the power of the constant current source for supplying all pixels of an LED matrix is regulated down.
- the contrast to the surroundings is comparatively significantly reduced.
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- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280015789.0A CN116868564A (zh) | 2021-02-18 | 2022-01-25 | 用于运行高分辨率的投影前照灯的方法和用于机动车的投影前照灯系统 |
US18/264,674 US20240034222A1 (en) | 2021-02-18 | 2022-01-25 | Method for operating a high-resolution projection headlight, and projection headlight for a motor vehicle |
EP22701391.9A EP4295572A1 (de) | 2021-02-18 | 2022-01-25 | Verfahren zum betreiben eines hochauflösenden projektionsscheinwerfers und projektionsscheinwerfersystem für ein kraftfahrzeug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021201550.6 | 2021-02-18 | ||
DE102021201550.6A DE102021201550A1 (de) | 2021-02-18 | 2021-02-18 | Verfahren zum Betreiben eines hochauflösenden Projektionsscheinwerfers und Projektionsscheinwerfersystem für ein Kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
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WO2022175028A1 true WO2022175028A1 (de) | 2022-08-25 |
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ID=80122297
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Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/051571 WO2022175028A1 (de) | 2021-02-18 | 2022-01-25 | Verfahren zum betreiben eines hochauflösenden projektionsscheinwerfers und projektionsscheinwerfersystem für ein kraftfahrzeug |
Country Status (5)
Country | Link |
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US (1) | US20240034222A1 (de) |
EP (1) | EP4295572A1 (de) |
CN (1) | CN116868564A (de) |
DE (1) | DE102021201550A1 (de) |
WO (1) | WO2022175028A1 (de) |
Cited By (1)
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WO2023187125A1 (fr) * | 2022-03-31 | 2023-10-05 | Valeo Vision | Procede de pilotage d'un dispositif lumineux |
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- 2022-01-25 CN CN202280015789.0A patent/CN116868564A/zh active Pending
- 2022-01-25 EP EP22701391.9A patent/EP4295572A1/de active Pending
- 2022-01-25 US US18/264,674 patent/US20240034222A1/en active Pending
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WO2018050593A1 (fr) * | 2016-09-15 | 2018-03-22 | Valeo Vision | Dispositif lumineux de véhicule automobile comportant une source lumineuse pixélisée et procédé de projection d'un faisceau lumineux pixélisé par ledit dispositif lumineux de véhicule automobile |
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WO2020260718A1 (fr) * | 2019-06-28 | 2020-12-30 | Valeo Vision | Dispositif et procede de controle d'un ensemble de sources lumineuses pour ensemble lumineux de vehicule automobile |
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WO2023187125A1 (fr) * | 2022-03-31 | 2023-10-05 | Valeo Vision | Procede de pilotage d'un dispositif lumineux |
FR3134168A1 (fr) * | 2022-03-31 | 2023-10-06 | Valeo Vision | Procede de pilotage d’un dispositif lumineux |
Also Published As
Publication number | Publication date |
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EP4295572A1 (de) | 2023-12-27 |
DE102021201550A1 (de) | 2022-08-18 |
US20240034222A1 (en) | 2024-02-01 |
CN116868564A (zh) | 2023-10-10 |
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