EP4285050A1 - Dispositif d'éclairage de la route d'un véhicule automobile - Google Patents
Dispositif d'éclairage de la route d'un véhicule automobileInfo
- Publication number
- EP4285050A1 EP4285050A1 EP22702278.7A EP22702278A EP4285050A1 EP 4285050 A1 EP4285050 A1 EP 4285050A1 EP 22702278 A EP22702278 A EP 22702278A EP 4285050 A1 EP4285050 A1 EP 4285050A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lens
- focal point
- light
- collector
- motor vehicle
- 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.)
- Granted
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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/26—Elongated lenses
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
-
- 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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- 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
- F21W2102/155—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 inclined and horizontal cutoff lines
Definitions
- the invention relates to a lighting device for a motor vehicle.
- the invention relates to the technical field of lighting devices for motor vehicles and more particularly lighting devices comprising an inclined lens.
- lighting devices comprising at least one light module comprising a light source, a collector with a reflecting surface, the lighting device comprising a system lens-type projection optics, the common lens imaging the reflective surface of the collector to form a light beam having a top cut-off.
- the type of lens used is convex in a vertical plane and neutral in a horizontal plane, which implies that in the vertical plane, said lens has a line of focus whose curvature follows the curve of said lens. This line of focus is usually placed at the level of the rear edge of the collector, so that the upper cut-off of the light beam formed from the images of the reflective surface of the collector by the lens is produced by this rear edge.
- this type of lighting device has a drawback when the lens is placed at an angle relative to the light module, which may be when a particular aesthetic aspect of the lighting device is desired.
- the lighting device comprises a plurality of light modules
- some light modules are closer to the common lens than others.
- the line of focus necessarily diverges from the rear edges of the collectors of certain modules.
- the image of the reflective surface of their collector by the common lens is therefore not sharp, which results in blurring in the cut formed in the light beam from the rear edge of this collector.
- the collector is from the line of focus, the more the cut-off line of the light beam reflected by said collector is blurred, in particular in a direction opposite to the inclination of the common lens with respect to the light modules. And it is not possible to remedy this drawback by replacing the collectors to position their rear edge on the line of focus, insofar as the space behind the lighting device is generally reduced.
- the angled arrangement of the lens moves the line of focus away from a part of the rear edge of the collector, called the remote part. Consequently, a portion of the cut formed from this part far from the rear edge appears blurred, which degrades the quality of the beam.
- An object of the invention is to propose a lighting device making it possible to preserve the sharpness of the cut formed in a light beam produced by the image of the reflective surface of the collector of at least one light module from a lens, including when this lens has a strong inclination with respect to this light module.
- the subject of the invention is a device for lighting the road of a motor vehicle, comprising at least one light module, the or each light module comprising a light source capable of emitting a light beam and a collector comprising a reflective surface arranged to collect and reflect the light beam emitted by said light source; a lens associated with the light module or with each light module, arranged to project the light beam reflected by the collector of the or each light module, said lens being arranged to form on the road an image of the reflecting surface of the collector of the or each light module light module; the lens extending in a substantially horizontal direction, the substantially horizontal direction being substantially inclined with respect to the light module(s).
- the device is remarkable in that the lens has a horizontal focal point and a vertical focal point, the horizontal focal point being offset from the vertical focal point.
- focal point horizontal or vertical, will mean an object focal point of the lens.
- the road lighting device of a motor vehicle comprising a plurality of light modules arranged adjacent to each other in a horizontal direction, each light module comprising a light source capable of emitting a light beam and a collector comprising a reflecting surface arranged to collect and reflect the light beam emitted by said light source;
- the lens being a lens common to the plurality of light modules, arranged to project the light beam reflected by the collector of each light module, said common lens being arranged to form on the road an image of the reflective surface of the collector of each light module ; the common lens extending in a substantially horizontal direction substantially inclined with respect to the light modules.
- the light modules are arranged adjacent on the same line and in a substantially horizontal direction.
- each light source is arranged opposite the corresponding collector, so that the reflecting surface of said collector collects and reflects the light beam emitted by said corresponding light source.
- the invention it is thus possible to produce light functions whose cutoff formed by the image of the reflective surface of the collector or of each collector is clear. Therefore it is possible to use a lens with a strong inclination in relation to the light modules, making it possible to adapt to the aesthetics of the vehicle automobile comprising the lighting device.
- the lens comprises a first transverse end and a second transverse end, opposite the first transverse end in the substantially horizontal direction, and the first transverse end is located closer to the collector(s) of the light module(s) than the second transverse end, in the direction of the optical axis of the lighting device.
- the first transverse end is intended to be located on the exterior side of the vehicle on which the lighting device is intended to be mounted
- the second transverse end is intended to be located on the interior side of the vehicle on which the lighting device is intended to be mounted.
- the collector of the or each light module has a rear edge and the vertical focal point of the lens is located near the rear edge of the or one of the collectors so that the image of this collector formed by the common lens has an upper cut formed by the rear edge of this collector.
- focal point located in the vicinity of the rear edge of a collector means a focal point located at a distance from said rear edge which is less than 10 mm.
- the lighting device comprises a plurality of light modules.
- Said plurality of light modules comprises two so-called end light modules, each located at one end of said plurality of light modules in said substantially horizontal direction, the distance between the rear edges of the collectors of said end light modules being less than a predetermined threshold.
- predetermined threshold is meant in particular a distance of less than 50 mm. It is in fact advantageous for the light modules to be sufficiently close to each other to guarantee that the image of the reflecting surface of each collector formed by the common lens is sharp, including for the light modules whose rear edge of the collector is distant from the vertical focal point.
- the device comprises at least one light module, in particular a single light module, extending between the end light modules.
- the plurality of light modules is formed by the two end light modules.
- the device comprises a single light module.
- the lighting device herein may be an overall lighting module which comprises at least one light module and which is intended to be mounted in a motor vehicle headlamp.
- the horizontal focal point of the lens is located upstream of the lens.
- the horizontal focal point of the lens is therefore located upstream of the lens relative to the optical path of the or each light beam reflected by the reflective surface of the or each collector in the direction of the lens.
- the lens has, in a horizontal section, a biconvex profile.
- the lens has, in a vertical section, a biconvex profile.
- the horizontal focal point of the common lens is located behind the collector or collectors.
- the rear of the collector(s) is defined relative to the overall direction of projection of the light beam(s).
- the overall direction of projection corresponds to the direction of the optical path of the light beam or beams.
- the common lens is arranged to project the or each light beam reflected by the or each collector in an overall direction of projection, and the horizontal focal point of the lens is aligned with the vertical focal point in this overall direction of 'emission.
- the alignment of the vertical focal point and of the horizontal focal point, in particular with an optical axis of the device, makes it possible to ensure a horizontal spreading of the light beam below the cut-off of this light beam, while maintaining a sharp cut-off.
- the horizontal focal point of the lens is located behind the collector(s) and the vertical focal point.
- the rear of the collector(s) and the rear of the vertical focal point are defined relative to the overall direction of projection of the light beam(s). According to this characteristic, it is possible to spread the projected beam horizontally, and thus to obtain a cut which is clean including in directions opposite to the inclination of the lens, even in the case of a strong inclination of this lens.
- the horizontal focal point of the lens is located downstream of the lens.
- the downstream of the lens is defined with respect to the optical path traveled by the light beam or beams between the or each collector and the lens.
- the lens has, in a horizontal section, a biconcave profile.
- the lens has, in a vertical section, a biconvex profile.
- the overall light beam projected by the lens from the light beam(s) reflected by the collector of the or each of the light modules forms a light beam of the regulatory crossing type.
- FIG. 1 schematically and partially represents a top view of the lighting device according to one embodiment of the invention.
- FIG. 2 schematically and partially represents a top view of the lighting device according to another embodiment of the invention.
- FIG. 3 schematically and partially represents a sectional view of the lighting device according to one embodiment of the invention.
- FIG. 4 schematically and partially represents a sectional view of the lighting device according to another embodiment of the invention.
- FIG. 1 a lighting device 30 of a motor vehicle according to one embodiment of the invention. This lighting device 30 will be described in connection with [FIG. 3] showing a sectional view of said embodiment.
- the lighting device 30 comprises, for example, two light modules 30.1, 30.2 and, at its front face, an optical lens 31 of projection.
- the lens 31 is formed from a single piece common to the plurality of light modules 30.1, 30.2, making it possible to project the light beams emitted by the plurality of light sources onto the road.
- Lens 31 is also called common lens 31.
- the light modules 30.1, 30.2 are arranged adjacent on the same line and in a substantially horizontal direction, here, so as to form a row of light modules.
- Each of the light modules 30.1, 30.2 comprises at least one light source 30.10, 30.20 and a collector, respectively 30.11, 30.21 comprising a reflecting surface arranged to collect and reflect the light rays emitted by said at least one light source 30.10, 30.20.
- the lens 31 extends in a substantially horizontal direction substantially inclined with respect to the light modules 30.1, 30.2, and in particular with respect to the line on which these light modules are arranged. It can thus be seen that the light module 30.1 is closer to the lens 31 than the module 30.2.
- the lens 31 comprises a first transverse end 31a and a second transverse end 31b, opposite the first transverse end 31a in the substantially horizontal direction, and the first transverse end 31a is located closer to the collectors 30.11, 30.21 light modules 30.1, 30.2 as the second transverse end 31b, in the direction of the optical axis of the lighting device 30.
- Each collector 30.11, 30.21 is arranged so that it collects the light beam emitted by the light source 30.10, 30.20 and reflects it towards the lens 31.
- the collector
- each light module 30.1, 30.2 has a rear edge so that the image of each collector 30.11, 30.21 formed by the common lens 31 has a cut, here higher formed by the rear edge of each said collector 30.11, 30.21 .
- the common lens 31 is arranged to project the light beams emitted by each light source 30.10, 30.20 and reflected by the collectors 30.11, 30.21 in an overall direction of projection.
- the lens 31 of this embodiment has in a horizontal section, a profile biconvex and in a vertical section, a biconvex profile.
- Lens 31 has a vertical focal point 31.1 and a horizontal focal point 31.2.
- the vertical focal point 31.1 of the common lens 31 is located close to the rear edge of the collector 30.11, and in particular at a distance from the rear edge of this collector 30.11 of less than 10 mm.
- the horizontal focal point 31.2 of the common lens 31 is located behind the collectors 30.11, 30.21, and in particular behind the vertical focal point 31.1.
- the horizontal focal point 31.2 is aligned with the vertical focal point 31.1 and with an optical axis of the device 30. Thanks to this arrangement, the upper cut-off of the image of the reflective surface of the collector 30.11 formed by the lens 31 is sharp.
- the two light modules 30.1, 30.2 are arranged in the lighting device 30 in a substantially horizontal direction, so that the distance between their rear edges is less than a predetermined threshold, for example 50 mm. All of the rear edges of the collectors 30.11, 30.21 together define the cut-off of the light beam formed by the device 30, the lens 31 horizontally spreading each of the beams coming from these collectors so that these beams form together, in a homogeneous manner, said light beam .
- FIG. 2 There is shown in [Fig. 2] a lighting device 30 of a motor vehicle according to another embodiment of the invention. This lighting device 30 will be described in connection with [FIG. 4] showing a sectional view of said other embodiment.
- the lighting device 30, the light sources 30.1, 30.2 and the collectors 30.11, 30.21 have the same characteristics and the same arrangement as in the previous embodiment.
- the lens 31 of this embodiment has in a horizontal section, a biconcave profile and in a vertical section, a biconvex profile.
- Lens 31 has a vertical focal point 31.1 and a horizontal focal point 31.2.
- the vertical focal point 31.1 of the common lens 31 is located near the rear edge of one of the collectors 30.1, 30.2.
- the horizontal focal point 31.2 is located downstream of the common lens 31 relative to the path traveled by the light beams between the collector 30.11, 30.21 and the common lens 31 Horizontal focal point 31.2 is aligned with vertical focal point 31.1.
- the invention makes it possible to achieve the objectives it has set itself, namely to propose a lighting device making it possible to preserve the sharpness of the cut formed in a light beam produced by the images of the reflecting surfaces the image of the reflecting surface of the collector of at least one light module from a lens, including when this lens has a strong inclination with respect to this light module.
- the invention proposes a lighting device for a motor vehicle comprising a common lens having a horizontal focal point and a vertical focal point offset with respect to each other.
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2100871A FR3119439B1 (fr) | 2021-01-29 | 2021-01-29 | Dispositif d’éclairage de la route d’un véhicule automobile |
| PCT/EP2022/052105 WO2022162178A1 (fr) | 2021-01-29 | 2022-01-28 | Dispositif d'éclairage de la route d'un véhicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4285050A1 true EP4285050A1 (fr) | 2023-12-06 |
| EP4285050B1 EP4285050B1 (fr) | 2026-05-20 |
Family
ID=74871671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22702278.7A Active EP4285050B1 (fr) | 2021-01-29 | 2022-01-28 | Dispositif d'éclairage de la route d'un véhicule automobile |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240318799A1 (fr) |
| EP (1) | EP4285050B1 (fr) |
| CN (1) | CN116802431A (fr) |
| FR (1) | FR3119439B1 (fr) |
| WO (1) | WO2022162178A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3138500B1 (fr) * | 2022-07-28 | 2024-10-18 | Valeo Vision | Unité lumineuse d’un module lumineux d’un véhicule |
| FR3139375B1 (fr) * | 2022-09-06 | 2024-10-04 | Valeo Vision | Module d’éclairage route avec source lumineuse dirigée vers le haut |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2904091B1 (fr) * | 2006-07-21 | 2009-03-06 | Valeo Vision Sa | Module optique pour projecteur de vehicule automobile |
| FR2910592B1 (fr) * | 2006-12-20 | 2012-07-20 | Valeo Vision | Module de projecteur lumineux de vehicule automobile pour un faisceau a coupure |
| FR2995661B1 (fr) * | 2012-09-17 | 2018-11-02 | Valeo Vision | Module d'eclairage pour vehicule automobile |
| JP6146040B2 (ja) * | 2013-02-15 | 2017-06-14 | スタンレー電気株式会社 | 車両用前照灯 |
| FR3002303B1 (fr) * | 2013-02-21 | 2015-03-20 | Valeo Vision | Unite d'eclairage et/ou de signalisation notamment de vehicule automobile |
| JP6311440B2 (ja) * | 2014-05-12 | 2018-04-18 | 市光工業株式会社 | 車両用前照灯 |
| JP6556530B2 (ja) * | 2015-07-02 | 2019-08-07 | 株式会社小糸製作所 | 車両用灯具 |
| JP2019079702A (ja) * | 2017-10-25 | 2019-05-23 | 株式会社小糸製作所 | 車両用前照灯 |
| US11313528B2 (en) * | 2017-12-29 | 2022-04-26 | Sl Corporation | Optical system for vehicle and vehicle lamp using the same |
| EP3550203B1 (fr) * | 2018-04-04 | 2022-12-21 | ZKW Group GmbH | Module d'éclairage pour un dispositif d'éclairage de véhicule automobile en flèche |
| FR3084728B1 (fr) * | 2018-07-31 | 2021-03-19 | Valeo Vision | Module lumineux imageant la surface eclairee d'un collecteur |
| CN109058915B (zh) * | 2018-10-18 | 2021-06-01 | 常熟理工学院 | Led光源远近光一体车灯模组 |
| KR102694059B1 (ko) * | 2019-09-20 | 2024-08-09 | 현대모비스 주식회사 | 헤드램프의 광학모듈 |
-
2021
- 2021-01-29 FR FR2100871A patent/FR3119439B1/fr active Active
-
2022
- 2022-01-28 WO PCT/EP2022/052105 patent/WO2022162178A1/fr not_active Ceased
- 2022-01-28 US US18/262,506 patent/US20240318799A1/en active Pending
- 2022-01-28 CN CN202280012261.8A patent/CN116802431A/zh active Pending
- 2022-01-28 EP EP22702278.7A patent/EP4285050B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3119439B1 (fr) | 2023-02-10 |
| FR3119439A1 (fr) | 2022-08-05 |
| WO2022162178A1 (fr) | 2022-08-04 |
| US20240318799A1 (en) | 2024-09-26 |
| CN116802431A (zh) | 2023-09-22 |
| EP4285050B1 (fr) | 2026-05-20 |
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