EP4469721A1 - Scheinwerfer für ein kraftfahrzeug - Google Patents
Scheinwerfer für ein kraftfahrzeugInfo
- Publication number
- EP4469721A1 EP4469721A1 EP23701238.0A EP23701238A EP4469721A1 EP 4469721 A1 EP4469721 A1 EP 4469721A1 EP 23701238 A EP23701238 A EP 23701238A EP 4469721 A1 EP4469721 A1 EP 4469721A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- headlight
- luminous surface
- luminous
- distribution
- 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
-
- 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
-
- 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]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- 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
Definitions
- the present invention relates to a headlight for a motor vehicle.
- Compact, pixelated light sources with small distances between the luminous surfaces already enable the realization of very compact module concepts.
- Corresponding module concepts are also referred to as SSL technology.
- the desired light distribution such as glare-free high beam (ADB)
- ADB glare-free high beam
- An example of such a light module can be found in DE 2017 105 888 A1. Only one lens is arranged there between the light-emitting diodes (LED) arranged in a matrix-like manner and the projection optics.
- the extensive omission of primary optics allows the optical system to be implemented in a significantly smaller installation space while at the same time being more efficient.
- the variety of variants can be limited, since the light distribution can be adapted to the respective homologation areas using software-based pixelation.
- the problem on which the present invention is based is the creation of a headlight of the type mentioned at the outset, which can produce a full light distribution consisting of a low beam and a high beam from a compact module.
- the headlight comprises a first luminous surface, wherein the headlight is set up so that light emanates from the first luminous surface, which serves to generate a high-beam distribution, - A second luminous surface, the headlight being set up in such a way that light emanates from the second luminous surface, which light is used to generate a portion in front of a low-beam light distribution, as well as
- a projection optics which is set up to project the light emanating from the first and from the second luminous surface into the exterior of the motor vehicle.
- a compact module can thus be implemented which can produce a full light distribution consisting of a low beam and a high beam.
- the inventive design can have the advantages of SSL technology, such as in particular a small installation space, high efficiency, fewer variants, less logistics effort, faster development times, lower development costs and synergy effects resulting from the use of identical parts for different vehicle types.
- the inventive design allows technical compatibility with currently used SSL concepts, but also with SSL
- the first luminous surface and the second luminous surface can have a distance between 0 ⁇ m and 200 ⁇ m in the plane of the luminous surfaces.
- luminous segments can be arranged in a matrix-like manner on the first luminous surface for the targeted generation of pixels of a high beam distribution.
- the adjacent luminous segments can have a distance of between 0 ⁇ m and 100 ⁇ m from one another on the first luminous surface.
- the luminous segments on the first luminous surface can be in the form of light-emitting diodes or laser diodes, in particular the first luminous surface corresponding to the active surface of a solid-state LED array.
- the solid state LED array can also be an SSL HD LED.
- the headlight is set up so that the light emanating from the first luminous surface is not only used to generate a high beam distribution, but also to generate a range portion of a low beam distribution and/or to generate a light-dark boundary of a low beam distribution .
- the second luminous surface is set up to have a luminance that changes over the surface.
- the luminance on the second luminous surface can have gradients that differ from one another in two mutually perpendicular directions. In this way, a low beam distribution or at least the portion in front of a low beam distribution can be specified on the second luminous surface and projected into the exterior of the motor vehicle by the projection optics.
- the headlight comprises a plurality of light-emitting diodes whose active areas together form the second light-emitting area.
- the second luminous area can also be formed by the active area of a solid-state LED array.
- the headlight comprises converter means or scattering means and at least one light-emitting diode, with the second luminous surface being formed by the converter means or the scattering means and with the at least one light-emitting diode illuminating the converter means or scattering means when the headlight is in operation.
- the light can be generated at a distance from the second luminous surface before taking place through the at least one light-emitting diode, the light of which is converted by the converter means or scattering means into the desired distribution on the second luminous surface.
- the headlight comprises a plurality of light guides and at least one light-emitting diode, the decoupling surfaces of the light guides together forming the second light-emitting surface.
- the light can be generated at a distance from the second luminous surface by the at least one light-emitting diode, the light from which reaches the second luminous surface through the light guide.
- the headlight comprises at least one primary lens or at least one reflector and at least one light-emitting diode, with the light exit surface of the at least one primary lens or of the at least one reflector forming the second luminous surface.
- the light can be generated at a distance from the second luminous surface by the at least one light-emitting diode, the light of which reaches the second luminous surface through the at least one primary optics or is reflected by the at least one reflector to the second luminous surface.
- the headlight it is possible for the headlight to be set up so that the light emanating from the second luminous surface is used not only to generate a portion of a low-beam light distribution in front of it, but also to generate a range portion of a low-beam light distribution and/or to generate a light-dark boundary Low beam distribution is used.
- the first luminous area is smaller than the second luminous area.
- FIG. 1 shows a schematic plan view of the luminous surfaces of a first embodiment of a headlight according to the invention
- FIG. 2 shows a detail according to arrow II in FIG. 1 ;
- FIG. 3 shows a schematic side view of the embodiment according to FIG. 1 ;
- FIG. 4 shows a diagram to clarify the design options for the second luminous surface of a headlight according to the invention
- FIG. 5 shows a schematic side view of a second embodiment of a headlight according to the invention.
- FIG. 6 shows a schematic side view of a third embodiment of a headlight according to the invention.
- Fig. 7 shows a detail according to arrow VII in Fig. 6;
- FIG. 8 shows a schematic plan view of the second luminous surface of an embodiment of a headlight according to the invention.
- Fig. 9 shows the luminance along the arrow IX in Fig. 8.
- Fig. 10 shows the luminance along the arrow X in Fig. 8.
- the embodiments of a headlight according to the invention that are partially shown in the figures each comprise a first luminous surface 1, a second luminous surface 2 (see FIG. 1) and projection optics 3, which are only indicated schematically in FIG. 3.
- the luminous surfaces 1, 2 are arranged in a plane 4 , which corresponds to the imaging plane of the projection optics 3.
- the first luminous surface 1 and the second luminous surface 2 can have a distance 5 from one another in the plane 4 of between 0 ⁇ m and 200 ⁇ m (see FIG. 2).
- the first luminous surface 1 is smaller than the second luminous surface 2 .
- the first luminous surface 1 is divided into luminous segments 6 in the manner of a matrix.
- adjacent luminous segments 6 on the first luminous surface 4 are at a distance from one another of between 0 ⁇ m and 100 ⁇ m.
- the first luminous area 1 corresponds to the active area of a solid-state LED array 7 (see FIG. 5).
- the solid-state LED array 7 forming the first luminous surface 1 can be controlled in such a way that a luminance distribution is produced on the first luminous surface 1, which is projected onto the exterior of the motor vehicle using the projection optics 3 to produce a high beam distribution.
- the light emanating from the first luminous surface 1 can serve not only to generate a high beam distribution, but also to generate a range portion of a low beam distribution and/or to generate a light-dark boundary of a low beam distribution.
- the second luminous surface 2 can also be divided into luminous segments in the manner of a matrix (not shown).
- the second luminous area 2 can also correspond to the active area of a solid-state LED array 8 .
- Fig. 5 illustrates an embodiment in which both the first luminous surface 1 and the second luminous surface 2 are each formed by the active surface of a solid-state LED array 7, 8, the are arranged on a common heat sink 9 and in particular are also arranged on a common printed circuit board, not shown.
- the solid-state LED array 8 forming the second luminous surface 2 can be controlled in such a way that a luminance distribution is produced on the first luminous surface 2, which is projected into the exterior of the motor vehicle using the projection optics 3 at least in the forefield of a low-beam light distribution.
- the light emanating from the second luminous surface 2 can be used not only to generate a portion of a low beam distribution in front, but also to generate a range portion of a low beam distribution and/or to generate a light-dark boundary of a low beam distribution.
- a luminance distribution can be generated on the second luminous surface 2, and when it is projected into the exterior of the motor vehicle, a portion 10 in front of a low-beam light distribution is produced.
- a luminance distribution can be generated on the second luminous surface 2 in the case shown in the center of FIG.
- a luminance distribution can be generated on the second luminous surface 2 in the case shown on the right in Fig. 4, which, when projected onto the exterior of the motor vehicle, produces a combination 12 of a portion of the front area with a light-dark boundary and with a range portion of a low beam distribution and thus a complete Low beam distribution is created.
- the second luminous surface 2 can also be designed as a non-segmented luminous surface which, during operation, has a luminance profile that corresponds to the low beam distribution to be generated.
- Fig. 9 and Fig. 10 show the luminance curves 13, 14 in two mutually perpendicular directions x, y, which correspond to the arrows IX, X in Fig. 8 correspond. It is found that the luminance on the second luminous surface 2 has gradients that are different from one another in two mutually perpendicular directions.
- the second luminous surface 2 designed as a surface with a corresponding luminance profile can be formed by an array of light-emitting diodes.
- the headlight comprises converter means 15 or scattering means and at least one light-emitting diode 16, with the second luminous surface 2 being formed by the converter means 15 or the scattering means, and with the at least one light-emitting diode 16 being the converter means or scattering means when the headlight is in operation illuminated (see Fig. 6).
- the at least one light-emitting diode 16 is spaced apart from the converter means 15 or scattering means.
- the solid-state LED array 7 forming the first luminous surface 1 and the at least one light-emitting diode 16 serving to illuminate the converter means 15 or scattering means can be arranged on the same heat sink 9 .
- the solid-state LED array 7 is arranged on a first circuit board 17 (see FIG. 7) and the at least one light-emitting diode 16 is arranged on a second circuit board, which is different from the first and is not shown is offset to the left of the first circuit board 17.
- the distance 18 between the edge of the heat sink 9 and the solid-state LED array 7 forming the first luminous surface 1 is not greater than 200 ⁇ m (see FIG. 7).
- the at least one light-emitting diode 16 should also be placed close to the step 19 formed in the heat sink 9 (see FIG. 6).
- the second luminous surface 2 designed as a surface with a corresponding luminance profile can alternatively also be formed by the decoupling surfaces of a plurality of light guides (not shown), into which the light of the at least one light-emitting diode 16 is coupled.
- the second luminous surface 2 designed as a surface with a corresponding luminance profile, can alternatively also be formed by light exit surfaces of at least one primary optics (not shown) or at least one reflector (not shown), with the light from the at least one light-emitting diode 16 passing through the at least one primary optics to the second luminous surface 2 or from the at least one reflector is reflected to the second luminous surface 2.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022101792.3A DE102022101792A1 (de) | 2022-01-26 | 2022-01-26 | Scheinwerfer für ein Kraftfahrzeug |
| PCT/EP2023/050272 WO2023143890A1 (de) | 2022-01-26 | 2023-01-09 | Scheinwerfer für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4469721A1 true EP4469721A1 (de) | 2024-12-04 |
Family
ID=85036193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23701238.0A Pending EP4469721A1 (de) | 2022-01-26 | 2023-01-09 | Scheinwerfer für ein kraftfahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12449104B2 (de) |
| EP (1) | EP4469721A1 (de) |
| CN (1) | CN118632999A (de) |
| DE (1) | DE102022101792A1 (de) |
| WO (1) | WO2023143890A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021117875A1 (de) * | 2021-07-12 | 2023-01-12 | HELLA GmbH & Co. KGaA | Scheinwerfer für ein Fahrzeug |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008036193B4 (de) | 2008-08-02 | 2020-03-12 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung für ein Kraftfahrzeug |
| DE102010041096B4 (de) * | 2010-09-21 | 2024-05-08 | Osram Gmbh | Leuchtvorrichtung |
| DE102010056313C5 (de) | 2010-12-27 | 2017-03-16 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung eines Kraftfahrzeugs |
| DE202011103805U1 (de) * | 2011-04-27 | 2011-11-30 | Automotive Lighting Reutlingen Gmbh | Lichtmodul eines Kraftfahrzeugs zur Erzeugung einer Grundverteilung für eine Fernlicht-Lichtverteilung |
| EP3056803B1 (de) * | 2011-09-01 | 2018-06-06 | Koito Manufacturing Co., Ltd. | Automobilscheinwerfervorrichtung |
| DE102014226650B4 (de) | 2014-12-19 | 2023-05-25 | Osram Gmbh | Leuchte |
| DE102015104514A1 (de) | 2015-03-25 | 2016-09-29 | Hella Kgaa Hueck & Co. | Beleuchtungsvorrichtung für Fahrzeuge |
| DE102015224745B4 (de) * | 2015-12-09 | 2017-11-16 | Automotive Lighting Reutlingen Gmbh | Kraftfahrzeugscheinwerfer mit einer Grundlichtbaugruppe und einer Fernlichtbaugruppe |
| DE102016109132A1 (de) | 2016-05-18 | 2017-11-23 | Hella Kgaa Hueck & Co. | Scheinwerfer, insbesondere Scheinwerfer eines Kraftfahrzeugs |
| DE102016125887A1 (de) * | 2016-12-29 | 2018-07-05 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für Kraftfahrzeugscheinwerfer |
| DE102017105888A1 (de) | 2017-03-20 | 2018-09-20 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für einen Kraftfahrzeugscheinwerfer und Scheinwerfer mit einem solchen Lichtmodul |
| CN209026719U (zh) * | 2018-10-25 | 2019-06-25 | 华域视觉科技(上海)有限公司 | 一种双排矩阵式照明模组 |
| US11629831B2 (en) * | 2019-01-29 | 2023-04-18 | Hasco Vision Technology Co., Ltd. | Vehicle lamp illumination module, vehicle lamp and vehicle |
-
2022
- 2022-01-26 DE DE102022101792.3A patent/DE102022101792A1/de active Pending
-
2023
- 2023-01-09 WO PCT/EP2023/050272 patent/WO2023143890A1/de not_active Ceased
- 2023-01-09 EP EP23701238.0A patent/EP4469721A1/de active Pending
- 2023-01-09 CN CN202380018882.1A patent/CN118632999A/zh active Pending
-
2024
- 2024-07-26 US US18/784,922 patent/US12449104B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022101792A1 (de) | 2023-07-27 |
| US12449104B2 (en) | 2025-10-21 |
| US20240384848A1 (en) | 2024-11-21 |
| CN118632999A (zh) | 2024-09-10 |
| WO2023143890A1 (de) | 2023-08-03 |
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Owner name: HELLA GMBH & CO. KGAA |