EP4003785A1 - Procede de contrôle d'un dispositif lumineux apte a emettre deux faisceaux lumineux pixelises de resolutions differentes - Google Patents
Procede de contrôle d'un dispositif lumineux apte a emettre deux faisceaux lumineux pixelises de resolutions differentesInfo
- Publication number
- EP4003785A1 EP4003785A1 EP20743678.3A EP20743678A EP4003785A1 EP 4003785 A1 EP4003785 A1 EP 4003785A1 EP 20743678 A EP20743678 A EP 20743678A EP 4003785 A1 EP4003785 A1 EP 4003785A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pixel
- light beam
- target object
- pixelated
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
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- 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
-
- 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
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
-
- 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
-
- 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
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/269—Analysis of motion using gradient-based methods
-
- 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
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/05—Special features for controlling or switching of the light beam
- B60Q2300/054—Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity
-
- 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
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/05—Special features for controlling or switching of the light beam
- B60Q2300/056—Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
-
- 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
- F21W2102/16—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 blurred cut-off lines
Definitions
- the invention relates to the field of automotive lighting. More specifically, the invention relates to the field of automotive lighting by means of two pixelated beams of different resolutions.
- This type of module allows the host vehicle to perform, for example, anti-glare road-type lighting functions, in which certain pixels of the high beam are switched off or attenuated to form a dark zone at the level of a target object that should not be dazzle, such as a tracked or passed target vehicle.
- the pixelated light beam emitted by this type of module is generally emitted in a restricted and dedicated emission zone. Indeed, the cost of this type of module is particularly high, and would become prohibitive if the high-resolution pixelated light beam were to be emitted on the entire road.
- the resolution requirements in areas other than the high-resolution beam are reduced. For example, for crossed or tracked target vehicles that are close to the host vehicle, a coarser resolution than that of the high resolution pixelated beam is sufficient.
- a hybrid light device comprising light modules capable of respectively emitting high-resolution and low-resolution beams in adjacent emission zones and together performing a function of anti-glare road type.
- the problem arises of the perception by the driver of the host vehicle of the transition from a dark zone at the target object level not to be dazzled by the pixelated beam at high resolution. solution to the low resolution pixelated beam, and vice versa.
- a target object moves from the high-resolution beam area to the low-resolution beam area
- there is a sudden extinction of one or more pixels of the low-resolution beam while the dark area formed in the high resolution beam is always present.
- This sudden extinction to form a dark zone much larger in size than that already present in the high-resolution beam can generate discomfort for the driver of the host vehicle, and therefore represents a problem for his safety.
- the aim of the invention is thus to solve this problem by proposing a method for controlling a hybrid lighting device which does not generate little or no discomfort for the driver of the host vehicle during the transition of a target object from the high resolution beam area to the low resolution beam area, and vice versa.
- the invention relates to a method for controlling a light device of a motor vehicle comprising at least first and second light modules arranged to respectively emit first and second pixelated light beams in first and second predetermined emission zones associated with them, the resolution of the first pixelated light beam being greater than the resolution of the second pixelated light beam and the first and second predetermined emission zones being adjacent, the method comprising the following steps:
- the pixel or pixels of the light beam of lower resolution have already been attenuated, or even off, or on the contrary, enhanced, or even re-lit. Consequently, the eye of the driver of the host vehicle has already been accustomed, and the transition during the switching on or off of this or these pixels of the lower resolution light beam is carried out smoothly, without causing any interference. discomfort for the driver.
- the first and second pixelated beams are emitted simul
- the light intensity of each of the pixels of each pixelated beam is selectively controllable, for example as a function of information received from a sensor of the host vehicle.
- the extinction of a pixel corresponds to controlling its luminous intensity to a zero value
- the attenuation of a pixel corresponds to a decrease in its luminous intensity to a non-zero value lower than its current value
- the re-ignition of a pixel corresponds to the control of its luminous intensity at a predetermined maximum value
- the enhancement of a pixel corresponds to an increase of its luminous intensity to a value less than said maximum value and greater than its current value.
- resolution of a pixelated light beam is understood to mean the number of pixels
- the pixelized beam thus being composed of a plurality of pixels arranged in a plurality of lines and / or columns, and this resolution being in particular a function of the dimensions of each pixel and of the dimension of the emission zone associated with this beam.
- the vertical resolution of the first pixelated beam namely the number of lines composing this first pixelated beam, is greater than the vertical resolution of the second pixelated beam, their horizontal resolutions, namely the number of columns which compose them, possibly being identical. or different.
- adjacent emission zones two emission zones juxtaposed to each other so that at least one pixel of one of the pixelated beams located at the edge of the associated emission zone is in contact with at least one pixel of the other pixelated beam located at the edge of the associated emission zone.
- said first pixel of the second pixelated beam is a pixel located at the edge of the second emission zone and in contact with at least one pixel of the first pixelated beam located at the edge of the first emission zone.
- the step of detecting the target object comprises determining the position of the target object, and possibly its speed.
- the dark area is centered at the position of the target object.
- the step of gradually modifying said at least a first pixel can be performed as a function of the evolution of said position, and possibly of said speed.
- the method comprises an additional step, at the end of
- the step of progressive modification of removing said dark zone in the pixelated light beam associated with said given zone and of forming a dark zone in the pixelated light beam associated with the other zone, by extinction or attenuation of at least one pixel of this pixelated light beam, located at the level of the target object.
- the invention thus encompasses two types of transitions of the target object, namely a transition of the target object from the first emission zone to the second emission zone and a transition of the target object from the second zone to the first zone.
- the first emission zone is the given zone
- the progressive modification of said at least a first pixel of the second beam is carried out by progressive attenuation of the light intensity of this pixel before the target object reaches the second emission zone, in particular at this first pixel.
- this first pixel is extinguished or attenuated sufficiently to form a dark zone in the second pixelized light beam, and the pixels of the first pixelated beam forming said dark zone in the first pixelated light beam can be re-lit or enhanced.
- the second emission zone is the given zone
- the progressive modification of said at least a first pixel of the second beam is carried out by gradually increasing the light intensity of this pixel before the target object reaches the first emission zone, in particular to the right of this first pixel.
- this first pixel is re-lit or enhanced sufficiently to remove said dark zone in the second pixelated light beam, and one or more pixels of the first pixelated beam can be turned off or dimmed to form a dark area in the first pixelated beam.
- Attenuation mask is meant a table comprising a plurality of cells arranged in a plurality of rows and / or columns.
- This attenuation mask is virtually superimposed on the pixelated beams, for example by being centered on the position of the target object, so as to be able to modify the light intensity of said at least one first pixel of the second light beam as a function of the position of said attenuation mask when it moves concomitantly with the target object.
- the attenuation mask can be located at the level of the first pixelated beam only, at the level of the second pixelized beam only or so multaneously at the level of the two pixelized beams.
- said first pixel comprises two lateral edges, namely a first and a second edge according to the direction of displacement of the target object, and therefore of the attenuation mask.
- the expression cell of the attenuation mask adjacent to a pixel is thus understood to mean, for example, a cell which is in contact with the first edge of the first pixel in this direction of displacement.
- the attenuation mask moves concomitantly with the target object, several cells can be successively adjacent to the first pixel when moving the attenuation mask, so that for each new cell adjacent to the first pixel, the intensity is modified light of the first pixel in order to implement the progressive modification of this light intensity.
- the values of the cells of the attenuation mask define an attenuation gradient.
- said first pixel is modified according to the value of said cell adjacent to this first pixel.
- the value of each cell can define an attenuation coefficient, the light intensity of the first pixel being changed to take the value of its maximum intensity multiplied by the attenuation coefficient of the cell adjacent to the first pixel.
- the gradient defined by the cell values may be a symmetrical horizontal gradient, the minimum of which is located at the level of the center of the attenuation mask. This type of gradient helps ensure a smooth transition, whether it is a transition from the first emission zone to the second emission zone or vice versa.
- the gradient can be an asymmetric horizontal gradient, the minimum of which is located at an edge of the attenuation mask. Indeed, one may wish to soften only a single type of transition, for example from the first emission zone to the second emission zone.
- the horizontal dimension of the attenuation mask is greater than or equal to the width of the target object.
- horizontal dimension is meant the number of columns making up the attenuation mask. This feature helps ensure that the gradual change in the first pixel will take place before the target object reaches the other area.
- the width of the target object can be a measured width, for example, when the target object is a target motor vehicle, by detecting the position of the headlights of this target vehicle and by determining the distance separating these two. spotlights.
- the width of the target object can be a predetermined value.
- the vertical resolution of the attenuation mask is substantially identical to that of the second pixelated beam.
- the number of lines and the vertical dimension of each of the lines of the attenuation mask correspond respectively to the number of lines and the vertical dimension of each of the pixel lines of the second pixelated beam.
- the dark zone when it is
- the unsharp mask may comprise a plurality of cells whose dimensions correspond to the dimensions of the pixels of the first pixelated light beam, and whose values define for example a radial gradient, the minimum of which is located at the center of the mask arranged at the level the position of the target object. This unsharp mask makes it possible in particular to attenuate the movement of the dark zone within the first pixelized light beam when the target object is moving.
- the horizontal resolution of the attenuation mask is determined as a function of the number of values adopted by the pixels of the dark zone of the first pixelized light beam.
- the radial gradient of the unsharp mask can define a given number of light intensity values that can be adopted by the pixels of the first pixelated light beam. If applicable, the number of columns of the attenuation mask can be greater than or equal to twice this number of values.
- the horizontal dimension of the columns of the attenuation mask can correspond to the horizontal dimension of the pixels of the first pixelized light beam. This ensures that the transition from the dark zone from the first zone to the second emission zone will be consistent with the transition from the dark zone within the first emission zone alone.
- the method comprises the following step, when said given area is the second predetermined area: progressive modification of at least a second pixel of the second pixelized light beam when the target object moves from the first pixel to said second pixel and before the target object reaches the second pixel.
- progressive modification of at least a second pixel of the second pixelized light beam when the target object moves from the first pixel to said second pixel and before the target object reaches the second pixel.
- the step of progressive modification comprises a step of predicting a displacement trajectory of the target object from the given zone to the other emission zone and a step of modifying the first pixel as a function of said predicted trajectory. If necessary, the modification of the intensity of the first pixel can be carried out according to a curve, for example a ramp, determined in particular according to the speed of movement of the target object along the predicted path.
- the first pixelated light beam is a light beam comprising a plurality of pixels, for example 500 pixels of dimensions between 0.05 ° and 0.2 °, distributed according to a plurality of rows and columns, for example 20 rows and 25 columns
- the second pixelated light beam is a light beam comprising a plurality of pixels, for example 10 pixels with dimensions greater than 1 °, distributed along a single line.
- each light module comprises a plurality of light sources and an optical device arranged to together emit a pixelated light beam, as well as a controller which selectively controls each of the light sources of the light module so that this light source emits an elementary light beam forming one of the pixels of the pixelated light beam.
- light source is understood to mean any light source possibly associated with an electro-optical element, capable of being activated and selectively controlled to emit an elementary light beam whose light intensity is controllable. It may in particular be a light-emitting semiconductor chip, a light-emitting element of a monolithic pixelated light-emitting diode, a portion of a light-converting element that can be excited by a light source. or even a light source associated with a liquid crystal or a micro-mirror.
- the subject of the invention is also a computer program comprising program code which is designed to implement the method according to the invention.
- the subject of the invention is also a data medium on which the computer program according to the invention is recorded.
- FIG.l schematically and partially shows a light device for implementing a method according to one embodiment of the invention
- FIG.2 schematically shows a projection on a screen of the beams
- FIG.3 shows a method of controlling the lighting device of [Fig. 1] according to one embodiment of the invention
- FIG.6 schematically shows a projection on a screen of the beams
- FIG.7 schematically shows a projection on a screen of the beams
- a right lighting device 1 of a host motor vehicle comprising three light modules 2, 3 and 4.
- the light module 2 comprises a light source 21 associated with a lens 22 to emit a light beam of the LB crossing type.
- the light module 3 comprises a pixelized light source 31 associated with a lens 32 for emitting a first pixelized light beam HD and the light module 4 comprises a matrix of LEDs 41 associated with a lens 42 for emitting a second pixelized beam LD.
- the pixelated light source 31 is a pixelated mono-lithic light-emitting diode, each of the light-emitting elements of which forms a light source that can be activated and selectively controlled by an integrated controller to emit an elementary light beam whose light intensity is controllable and thus forming one of the pixels of the pixelated HD light beam.
- the light device 1 comprises a controller 5 arranged to control the light source 21, the integrated controller of the pixelated light source 31 and the LEDs of the matrix of LEDs 41 so as to selectively control the switching on, switching off and changing.
- the first pixelized light beam HD is emitted in a first emission zone ZHD and comprises 88 pixels HDi, j of dimensions 0.2 °, distributed over 8 columns and 11 rows.
- the second pixelated light beam LD is emitted in a second emission zone ZLD and comprises 4 pixels LDi of dimensions 1 °, distributed over a single line.
- the resolution of the first pixelized beam HD and in particular its vertical resolution, is therefore greater than the resolution of the second pixelized beam LD.
- the first transmission area ZHD is adjacent to the second transmission area ZLD.
- the pixels HD 1.1 to HD 1.11 of the first pixelized HD light beam located at the edge of the first emission zone ZHD and on the side of the second emission zone ZLD are juxtaposed and in contact with the first pixel LDI of the second pixelated light beam LD located at the edge of the second emission zone ZLD and on the side of the first ZHD emission zone.
- the emission zones ZED and ZHD extend above an upper cut-off line of the passing-type beam LB so as to cover a road scene on which a target motor vehicle C. is traveling.
- the ZHD emission thus extends over a central portion of the road scene while the second ZED zone extends over a lateral portion of the road scene.
- the embodiment described in [Fig. 2] does not mention a pixelized light beam on the other side of the first pixelated beam HD but one could provide such a beam symmetrical to the second pixelized beam LD without departing from the scope of the present invention.
- FIG.3 a method of controlling the lighting device 1 according to one embodiment of the invention, implementing an anti-glare road type lighting function, and whose different steps will now be described in conjunction with [Figs. 4] to [Fig. 7] which represent the pixelated HD and LD light beams projected onto a screen, during these different stages.
- the control method comprises a first step El of detecting the presence of the target vehicle C and of determining the position of the target object C on the road.
- This step E1 can for example be implemented by one or more sensors of the host vehicle, such as for example a camera and / or a radar and / or a lidar, associated with the computer 6 of the host vehicle implementing algorithms image or signal processing.
- the computer 6 informs the controller 5 of the presence of the target object C and provides it with its position.
- the method comprises a second step E2 of forming a dark zone ZS in one and / or the other of the pixelated beams HD and LD as a function of said position of the target object C.
- the target object C is located in the first emission zone ZHD associated with the first pixelated beam HD.
- the controller 5 will thus firstly define a blur mask MF comprising 20 cells distributed in 4 columns and 5 rows and whose dimensions correspond to the pixels HDi, j of the first pixelated beam HD and whose values define a radial gradient whose minimum is located in the center of the MF mask.
- An example of an MF unsharp mask is shown in [fig.8].
- the radial gradient of this example of an MF blur mask defines 4 values likely to be adopted by the pixels HDi, j of the first pixelated beam, namely 0%, 25%, 50%, 75% of an intensity value maximum that these pixels can adopt, the values of 0% being located in the center of the mask and the values of 75% being located on the corners of the mask. These values have been represented in [Fig. 8] by different distributions of dotted lines.
- the controller 5 will in a second step apply the blur mask MD to the HD pixels jj of the first pixelated beam HD by centering the blur mask MD on the position of the target object C.
- Each pixel concerned HD thus goes there be turned off or dimmed, so that its light intensity corresponds to the value of the cell of the corresponding blur mask MF, the other non-relevant HD pixels y being kept on, so as to form the dark zone ZS. All LD pixels are also kept on.
- the beam resulting from the combination of the HD and LD beams therefore illuminates the road in front of the host vehicle as much as possible, without dazzling the driver of the target vehicle C.
- controller 5 will also define a mask
- the MA attenuation mask comprises 44 cells distributed in as many lines as the second pixelated beam LD comprises, in this case one single row of the same dimensions as those of the rows of the second pixelated beam LD, and in as many columns as the number of values defined by the gradient of the unsharp mask, in this case four columns of the same size as those of the columns of the first beam pixelated HD.
- the values of the cells of the MA attenuation mask define an asymmetric horizontal gradient whose minimum is located at an edge of the MA mask.
- the controller 5 will modify the value of at least the first pixel LD, of the second pixelized beam LD as a function of the position of this attenuation mask MA vis -to the second ZLD emission zone. Indeed, the attenuation mask MA is centered on the position of the target vehicle C and moves concomitantly with it.
- the first pixel LD will thus be modified by the controller 5 when a cell of the attenuation mask MA is adjacent to this first pixel LD ,.
- the attenuation mask MA is distant from the first pixel LD1. There is therefore no need to modify the intensity of this first pixel LD1.
- the target vehicle C has moved on the road scene to approach the host vehicle and pass it.
- the ML unsharp mask has also moved to stay centered on the position of target vehicle C, so that the dark area ZS remains level with target vehicle C so as not to glare.
- the target vehicle C did not reach the second emission zone ZLD.
- a cell C1 of the attenuation mask MA is now adjacent to the first pixel LDI of the second pixelated beam LD.
- the controller 5 will thus modify the light intensity of the first pixel LDI so that this light intensity corresponds to the value of the cell C1. There is thus an attenuation of the first pixel LDI before the target vehicle C has reached the second zone d 'ZLD broadcast.
- the target vehicle C has again moved on the road scene towards the host vehicle, without however reaching the second emission zone ZLD.
- the unsharp mask MF has thus moved to follow the position of the target vehicle, and has reached the edge of the first zone of emission ZHD.
- a smaller number of pixels of the first pixelized beam HD were thus affected by the mask MF to define the dark zone ZS.
- a second cell C2 of the attenuation mask MA is now adjacent to the first pixel LDI of the second pixelated beam LD, which implies that the controller 5 will again modify the light intensity of this first pixel LDI according to the value of this second cell C2. Due to the horizontal gradient defined by the attenuation mask MA, the attenuation of the first pixel LDI is greater, despite the target vehicle C still not having reached the second emission ZLD.
- the target vehicle C has moved and reached the second emission zone ZLD.
- the first pixel LDI thus sees its light intensity again attenuated by the controller 5 according to the value of cell C3 of the attenuation mask MA which is adjacent to it, while the number of pixels HDi, j which are extinguished or attenuated to form the zone dark ZS in the first HD pixelated light beam continues to decrease.
- cell C1 of the attenuation mask MA is now adjacent to the second pixel LD2 of the second pixelated beam LD, so that the controller 5 also attenuates the light intensity of this second pixel according to the value of cell C1.
- the pixel LD thus undergoes a progressive attenuation of its light intensity during the transition of the target vehicle C from the first emission zone ZHD to the second emission zone ZLD.
- This transition will be concluded in a step E5, not shown, by removing the dark zone ZS in the first pixelated beam HD, all of the HD pixels, j being on and by complete extinction of the pixel LD, of the second beam pixelated LD to form a dark zone in this second pixelated beam at the level of the target vehicle C.
- the second pixel LD 2 will see its light intensity progressively attenuated to prepare the transition of the target vehicle C from the first pixel LD, to the second pixel LD 2 .
- the invention cannot be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and to any technically effective combination of these means.
- other modes of achieving a progressive transition can be envisaged, for example implementing a prediction of the trajectory of the target vehicle and a progressive modification of the intensity of the first pixel of the second pixelized light beam as a function of said predicted trajectory. .
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1908777A FR3099541B1 (fr) | 2019-07-31 | 2019-07-31 | Procede de contrôle d’un dispositif lumineux apte a emettre deux faisceaux lumineux pixelises de resolutions differentes |
| PCT/EP2020/070491 WO2021018657A1 (fr) | 2019-07-31 | 2020-07-20 | Procede de contrôle d'un dispositif lumineux apte a emettre deux faisceaux lumineux pixelises de resolutions differentes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4003785A1 true EP4003785A1 (fr) | 2022-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20743678.3A Pending EP4003785A1 (fr) | 2019-07-31 | 2020-07-20 | Procede de contrôle d'un dispositif lumineux apte a emettre deux faisceaux lumineux pixelises de resolutions differentes |
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| US (1) | US20220412530A1 (fr) |
| EP (1) | EP4003785A1 (fr) |
| JP (1) | JP7229423B2 (fr) |
| CN (1) | CN114466767B (fr) |
| FR (1) | FR3099541B1 (fr) |
| WO (1) | WO2021018657A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3103256B1 (fr) * | 2019-11-14 | 2021-10-15 | Renault Sas | Système de commande d’au moins un projecteur d’un véhicule automobile. |
| FR3119221A1 (fr) * | 2021-01-22 | 2022-07-29 | Valeo Vision | Système d’éclairage de véhicule automobile muni d’un module lumineux apte à émettre un faisceau lumineux pixélisé |
| US20240116428A1 (en) * | 2021-02-15 | 2024-04-11 | Koito Manufacturing Co., Ltd. | Vehicle headlight |
| US12409775B2 (en) * | 2021-07-16 | 2025-09-09 | Koito Manufacturing Co., Ltd. | Vehicle headlamp having a lamp unit with a matrix of light emitting units emitting a plurality of irradiation spots and a boundary determination unit and control unit controlling the boundary illuminance |
| AU2022348601A1 (en) * | 2021-09-17 | 2024-04-18 | Brown & Watson International Pty Ltd | Adaptive driving light system |
| WO2023176460A1 (fr) * | 2022-03-15 | 2023-09-21 | 株式会社小糸製作所 | Dispositif de commande de distribution de lumière, système d'unité d'éclairage de véhicule et procédé de commande de distribution de lumière |
| DE102024114237A1 (de) * | 2024-05-22 | 2025-11-27 | HELLA GmbH & Co. KGaA | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
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| US7195379B2 (en) * | 2005-01-03 | 2007-03-27 | Ford Global Technologies, Llc | Anti-blinding system for a vehicle |
| DE102008013603B4 (de) * | 2008-03-11 | 2017-06-22 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für eine Beleuchtungseinrichtung |
| DE102009015824B4 (de) * | 2008-04-02 | 2022-03-24 | Denso Corporation | Blendfreibereich-Kartenprodukt und dieses verwendende System zur Bestimmung, ob eine Person geblendet wird |
| EP2786898A4 (fr) * | 2011-12-01 | 2015-11-11 | Toyota Motor Co Ltd | Système de commande de distribution de lumière pour véhicule |
| US9108566B2 (en) * | 2013-03-14 | 2015-08-18 | Federal-Mogul Corporation | Multi-pattern headlamp assembly and system |
| JP6264909B2 (ja) * | 2014-01-31 | 2018-01-24 | 株式会社デンソー | 前照灯制御装置及び前照灯 |
| US10066799B2 (en) * | 2014-06-26 | 2018-09-04 | Texas Instruments Incorporated | Pixelated projection for automotive headlamp |
| JP5955356B2 (ja) * | 2014-08-01 | 2016-07-20 | 株式会社豊田中央研究所 | 照明装置 |
| DE102014113478A1 (de) * | 2014-09-18 | 2016-03-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Beleuchtungsvorrichtung eines Kraftfahrzeugs und Verfahren zum Betreiben einer Beleuchtungsvorrichtung |
| JP6453669B2 (ja) * | 2015-02-27 | 2019-01-16 | トヨタ自動車株式会社 | 車両用前照灯制御装置 |
| JP6565127B2 (ja) * | 2015-05-19 | 2019-08-28 | スタンレー電気株式会社 | 車両用灯具 |
| FR3040936B1 (fr) * | 2015-09-15 | 2018-08-24 | Valeo Vision | Dispositif d’eclairage pour vehicules automobiles |
| AT517811B1 (de) * | 2015-10-07 | 2017-11-15 | Zkw Group Gmbh | Verfahren zur Steuerung einer adaptiven Lichtfunktion sowie Kraftfahrzeugscheinwerfer |
| DE102015225105B4 (de) * | 2015-12-14 | 2025-10-23 | Automotive Lighting Reutlingen Gmbh | Scheinwerfer für ein Kraftfahrzeug und Verfahren zum Betreiben eines Scheinwerfers für ein Kraftfahrzeug |
| KR101968661B1 (ko) * | 2015-12-29 | 2019-04-12 | 에스엘 주식회사 | 차량용 램프 및 상기 차량용 램프를 제어하는 방법 |
| KR101830662B1 (ko) * | 2016-07-06 | 2018-02-21 | 엘지전자 주식회사 | 차량용 램프 및 그것의 제어방법 |
| KR101830663B1 (ko) * | 2016-07-06 | 2018-02-21 | 엘지전자 주식회사 | 차량용 램프 및 그것의 제어방법 |
| FR3055980B1 (fr) * | 2016-09-15 | 2019-06-28 | Valeo Vision | Systeme optique pour faisceau lumineux pixelise |
| WO2018091970A1 (fr) * | 2016-11-16 | 2018-05-24 | Innoviz Technologies Ltd. | Systèmes et procédés de détection et localisation par la lumière (lidar) |
| KR101970249B1 (ko) * | 2017-05-29 | 2019-04-18 | 엘지전자 주식회사 | 차량용 램프 및 차량 |
| EP3636490B1 (fr) * | 2017-06-09 | 2023-05-24 | Koito Manufacturing Co., Ltd. | Lampe de véhicule, ainsi que dispositif et procédé de commande associés |
| KR101938669B1 (ko) * | 2017-06-22 | 2019-01-15 | 엘지전자 주식회사 | 차량용 램프 및 그것의 제어방법 |
| FR3069045B1 (fr) * | 2017-07-13 | 2019-10-04 | Valeo Vision | Dispositif d'eclairage projetant deux matrices de pixels lumineux decalees verticalement |
| JP6985082B2 (ja) * | 2017-09-25 | 2021-12-22 | スタンレー電気株式会社 | 車両用前照灯制御装置 |
| FR3072531B1 (fr) * | 2017-10-13 | 2021-01-29 | Valeo Vision | Procede et systeme ajustant selectivement des pixels, dans un module optique, pour rattraper des defauts geometriques dus aux tolerances de fabrication |
| US10232763B1 (en) * | 2017-11-27 | 2019-03-19 | Atieva, Inc. | Solid state adaptive headlight |
| FR3086611B1 (fr) * | 2018-10-02 | 2021-04-16 | Valeo Vision | Procede de commande d'un dispositif d'eclairage pour l'emission d'un faisceau d'eclairage de la route non eblouissant |
| JP7115390B2 (ja) * | 2019-03-28 | 2022-08-09 | 株式会社デンソー | 測距装置 |
| FR3096433B1 (fr) * | 2019-05-20 | 2021-05-21 | Valeo Vision | Procédé de contrôle d’un dispositif lumineux pour l'émission d’un faisceau lumineux pixelisé |
| JP7449472B2 (ja) * | 2020-07-01 | 2024-03-14 | マツダ株式会社 | ヘッドライト制御システム |
| US11781723B2 (en) * | 2021-08-17 | 2023-10-10 | Texas Instruments Incorporated | Adaptive light source with spatial light modulator |
-
2019
- 2019-07-31 FR FR1908777A patent/FR3099541B1/fr active Active
-
2020
- 2020-07-20 JP JP2022506204A patent/JP7229423B2/ja active Active
- 2020-07-20 CN CN202080066808.3A patent/CN114466767B/zh active Active
- 2020-07-20 US US17/630,293 patent/US20220412530A1/en not_active Abandoned
- 2020-07-20 EP EP20743678.3A patent/EP4003785A1/fr active Pending
- 2020-07-20 WO PCT/EP2020/070491 patent/WO2021018657A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022542984A (ja) | 2022-10-07 |
| CN114466767A (zh) | 2022-05-10 |
| WO2021018657A1 (fr) | 2021-02-04 |
| FR3099541A1 (fr) | 2021-02-05 |
| FR3099541B1 (fr) | 2024-09-20 |
| US20220412530A1 (en) | 2022-12-29 |
| CN114466767B (zh) | 2025-03-21 |
| JP7229423B2 (ja) | 2023-02-27 |
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