EP4374107A1 - Beleuchtungsvorrichtung für einen Kraftfahrzeugscheinwerfer - Google Patents
Beleuchtungsvorrichtung für einen KraftfahrzeugscheinwerferInfo
- Publication number
- EP4374107A1 EP4374107A1 EP22733177.4A EP22733177A EP4374107A1 EP 4374107 A1 EP4374107 A1 EP 4374107A1 EP 22733177 A EP22733177 A EP 22733177A EP 4374107 A1 EP4374107 A1 EP 4374107A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- lighting device
- vertical plane
- illuminance
- exit surface
- 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
- F21S41/24—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
- F21S41/10—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
-
- 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
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
-
- 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
- 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
-
- 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
- F21W2102/145—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 wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam
Definitions
- the invention relates to a lighting device for a motor vehicle headlight for generating a segmented high beam distribution, the high beam distribution having a first and a second illuminance maximum, which are designed and arranged in the high beam distribution such that an intersection point HV of the horizontal line H-H and the vertical line V-V of a measuring screen for measuring a flux distribution within an isolux line for 80% of the maximum illuminance of the high beam distribution, the lighting device for this purpose comprising the following:
- an optic body comprising a base body and several fibre-guide bodies protruding from the base body for forming the fixable, segmented high-beam light distribution from the flux of flux sources, which fibre-conductor bodies each have a sprue entry surface into which flux from the flux sources can be fed, and an exit surface, from which exit surface Ficht which can be fed into the respective flint guide bodies exits, the exit surface of adjacent flint guide bodies directly adjoining one another and forming a common exit surface of the optic body, the flint guide bodies of the optic body being arranged in at least one row along a straight line,
- a projection optics downstream of the beam path of the optics body with an optical axis which projection optics is set up to image the light emerging from the common exit surface in front of the lighting device in the direction of a main emission direction, the optical axis of the projection optics intersecting the intersection point HV, and the optical axis is parallel to the main emission direction of the lighting device, a first and second virtual axis being arranged orthogonally to the main emission direction, the first and second virtual axes also being orthogonal to one another are aligned, with the first axis being arranged in a horizontal plane and the second axis in a vertical plane when the lighting device is properly installed in a motor vehicle headlight, and each light-conducting body has two lateral side surfaces and one has an upper and a lower side surface, which side surfaces extend from the entry surface in the direction of the common exit surface and delimit the light guide body at least in sections.
- the invention also relates to a motor vehicle headlight with at least one lighting device according to the invention.
- intersection point HV is arranged within an isolux line for 80% of the maximum illuminance of the high beam distribution.
- the optics body has a first and a second light emission half which, seen in a properly installed state of the lighting device in a motor vehicle, is represented by a virtual vertical plane which runs through the optics body and in which vertical plane the optical axis of the projection optics is located , are delimitable from each other, wherein the first light-emitting half is arranged on a first side of the virtual vertical plane, and wherein the second light-emitting half is arranged on a second side opposite the first side, wherein the first fiber optic element of the first light emission half, which is directly adjacent to the virtual vertical plane, contributes to the generation of the first illuminance maximum of the high beam distribution, and wherein the first fiber optic element of the second light emission half, which is directly adjacent to the virtual vertical plane, contributes to the generation of the second illuminance - Maximum of the high-beam distribution contributes, with the entry surfaces of these first fiber-optic elements each having an offset to the corresponding exit surface, so that the center of the area of the
- the light-emitting diodes can be controlled independently of one another, preferably can be switched on and off independently of one another, in particular can be dimmed independently of one another.
- the light-conducting bodies of the optics body can be arranged in precisely one row along a straight line, with the straight line preferably being orthogonal to the optical axis of the projection optics
- the object is also achieved by a motor vehicle headlight with at least one lighting device according to the invention.
- FIG. 1 shows a view from above of an exemplary lighting device, comprising an optics body with a plurality of light guide bodies into which light from light sources can be fed, and projection optics arranged downstream of the optics body for generating a segmented high beam distribution,
- FIG. 2 shows a rear view of the exemplary lighting device from FIG. 1;
- FIG. 3 shows a representation of a schematic offset of the light entry and light exit surfaces of a light guide body
- FIG. 4 shows an example of a segmented high beam distribution with two maximum illuminance levels that can be generated by the lighting device from FIG. 1 .
- FIG. 1 shows an exemplary lighting device 10 for a
- Motor vehicle headlights for generating a segmented high beam distribution FL, wherein the high-beam distribution FL has a first and a second illuminance maximum M1, M2, which are designed and arranged in the high-beam distribution FL in such a way that an intersection point HV of the horizontal line HH and the vertical line VV of a measuring screen for measuring a light distribution within an isolux line for 80% the maximum illuminance of the high beam distribution FL is arranged, which light distribution FL is shown in Fig. 4.
- isolux lines indicate the distribution of the corresponding illuminance on a visible surface, with points of the same illuminance being connected to one another by curves, namely the isolux lines.
- the lighting device 10 comprises a plurality of light sources 50 and an optic body 100, comprising a base body 110 and a plurality of light guide bodies 200 protruding from the base body 110 for forming the definable, segmented high beam distribution FL from the light from the light sources 50, which light guide bodies 200 each have a light entry surface 210 , into which light can be fed from the light sources 50, and have an exit surface 220, from which exit surface 220 exits light that can be fed into the respective light guide bodies 200, the exit surface 220 of adjacent light guide bodies 200 directly adjoining one another and forming a common exit surface 220a of the optic body 100, wherein the light-guiding bodies 200 of the optics body 100 are arranged in exactly one row along a straight line G, which straight line G is orthogonal to the optical axis A of the projection optics.
- a light source 50 is assigned to an entry surface 210 of a light guide body 200 in each case.
- the plurality of light sources 50 are embodied here as light-emitting diodes, the light-emitting diodes being controllable independently of one another, preferably being able to be switched on and off independently of one another, in particular being dimmable independently of one another.
- the entrance surfaces 210 of the light-guiding bodies 200 are arranged in a common vertical plane (seen when the lighting device 10 is properly installed in a motor vehicle), which vertical plane is arranged orthogonally to the main emission direction X.
- the illumination device 10 comprises projection optics 300 arranged downstream of the beam path of the optics body 100, which projection optics 300 can comprise, for example, one or more projection lenses, with an optical axis A, which projection optics 300 is set up so that light emerging from the common exit surface 200a is directed in front of the illumination device 10 in the direction a main emission direction X, with the optical axis A of the projection optics 300 intersecting the point of intersection HV, and with the optical axis A being parallel to the main emission direction X of the illumination device 10 .
- projection optics 300 can comprise, for example, one or more projection lenses, with an optical axis A, which projection optics 300 is set up so that light emerging from the common exit surface 200a is directed in front of the illumination device 10 in the direction a main emission direction X, with the optical axis A of the projection optics 300 intersecting the point of intersection HV, and with the optical axis A being parallel to the main emission direction X of the illumination device 10 .
- a first and second virtual axis y, z are arranged orthogonally to the main emission direction X, with the first and second virtual axes y, z also being aligned orthogonally to one another, with the first axis y in a horizontal plane and the second axis y are arranged in a vertical plane.
- each fiber-optic element 200 has two lateral side surfaces 230a, 230b as well as an upper and a lower side surface 240a, 240b, as seen in a properly installed state of the lighting device 10 in a motor vehicle, which side surfaces 230a, 230b, 240a, 240b extend away from the entry surface 210 extend in the direction of the common exit surface 220a and delimit the light guide body 200 at least in sections.
- the optical body 100 has a first and a second light emission half LI, L2, which seen in a properly installed state of the lighting device 10 in a motor vehicle by a virtual vertical plane VE, which passes through the axis of the Main emission direction X and the second axis z is determined and runs through the optic body 100 and in which vertical plane VE the optical axis A of the projection optics 300 is located, can be distinguished from one another.
- each light emission half LI, L2 has the same number of light guide bodies 200.
- the first light-emitting half LI is arranged on a first side S1 of the virtual vertical plane VE, and the second light-emitting half L2 is arranged on a second side S2 opposite the first side S1.
- the first fiber optic element 200a of the first light emission half LI which is immediately adjacent to the virtual vertical plane VE, is involved in generating the first maximum illuminance Ml of the high beam distribution FL, with the first fiber optic element 200b of the second light emission half L2, which is immediately adjacent to the virtual vertical plane VE is involved in generating the second illuminance maximum M2 of the high beam distribution FL.
- the entry surfaces 210 of these first fiber-optic elements 200a, 200b each have an offset, in particular a parallel offset, to the corresponding exit surface 220, so that the surface center point FM2 of the entry surface 210 has a horizontal offset H-off, directed away from the virtual vertical plane VE, along the first axis y, which runs orthogonally to the virtual vertical plane VE, and has a downward vertical offset V-off along the second axis z to the surface center point FM1 of the associated exit surface 220. This is clearly shown in particular in FIG. 3 .
- the lateral side surface 230a of these first fiber-optic elements 200a, 200b which faces away from the virtual vertical plane VE, is convex and, in combination with the offset of the entrance surfaces 210, is set up to direct light from the corresponding light source 50 in the direction of the optical axis A in order to to increase the illuminance between the first and the second illuminance maximum Ml, M2 in the high beam distribution FL, so that the intersection point HV of a measuring screen is arranged within the isolux line for 80% of the maximum illuminance of the high beam distribution FL.
- lateral side surface 230b of these first light-conducting bodies 200a, 200b which is directed toward the virtual vertical plane VE, is concave.
- the upper side surface 240a of these first fiber-optic elements 200a, 200b is curved, preferably concave.
- the lower side surface 240b of these first fiber-optic elements 200a, 200b is curved, preferably convex.
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)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21186669.4A EP4123217A1 (de) | 2021-07-20 | 2021-07-20 | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer |
| PCT/EP2022/066693 WO2023001462A1 (de) | 2021-07-20 | 2022-06-20 | Beleuchtungsvorrichtung für einen Kraftfahrzeugscheinwerfer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4374107A1 true EP4374107A1 (de) | 2024-05-29 |
| EP4374107B1 EP4374107B1 (de) | 2025-05-07 |
Family
ID=76999707
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21186669.4A Withdrawn EP4123217A1 (de) | 2021-07-20 | 2021-07-20 | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer |
| EP22733177.4A Active EP4374107B1 (de) | 2021-07-20 | 2022-06-20 | Beleuchtungsvorrichtung für kfz-scheinwerfer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21186669.4A Withdrawn EP4123217A1 (de) | 2021-07-20 | 2021-07-20 | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12253228B2 (de) |
| EP (2) | EP4123217A1 (de) |
| JP (1) | JP7738737B2 (de) |
| KR (1) | KR20240014515A (de) |
| CN (1) | CN117813465A (de) |
| WO (1) | WO2023001462A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006044640A1 (de) * | 2006-09-19 | 2008-03-27 | Schefenacker Vision Systems Germany Gmbh | Leuchteinheit zur Fern- und Abblendlichterzeugung |
| US20090016074A1 (en) * | 2007-07-09 | 2009-01-15 | Magna International Inc. | Semiconductor light engine using glass light pipes |
| JP5636756B2 (ja) * | 2010-06-17 | 2014-12-10 | スタンレー電気株式会社 | 車両用灯具ユニット |
| DE102012213845B4 (de) * | 2012-08-03 | 2015-05-28 | Automotive Lighting Reutlingen Gmbh | Lichtleitelement und Lichtmodul |
| FR3033621B1 (fr) * | 2015-03-13 | 2017-04-21 | Valeo Iluminacion Sa | Dispositif lumineux a guides optiques |
| AT517523B1 (de) * | 2015-07-28 | 2017-09-15 | Zkw Group Gmbh | Leuchteinrichtung für einen KFZ-Scheinwerfer |
| US10816156B2 (en) * | 2017-02-14 | 2020-10-27 | Everlight Electronics Co., Ltd. | Light guiding element, light guiding device, and lighting module |
| DE102017107781A1 (de) * | 2017-04-11 | 2018-10-11 | Automotive Lighting Reutlingen Gmbh | Primäroptikeinheit für ein Lichtmodul |
| DE102017212095A1 (de) * | 2017-07-14 | 2019-01-17 | Osram Gmbh | Beleuchtungsvorrichtung mit geneigten schrägen lichtleitern für ein fahrzeug, scheinwerfer sowie fahrzeug |
| FR3085463B1 (fr) * | 2018-08-31 | 2022-03-25 | Valeo Vision | Module lumineux de vehicule automobile comprenant une pluralite de guides de lumiere |
| CN216143678U (zh) * | 2018-10-02 | 2022-03-29 | 亮锐控股有限公司 | Led照明设备、用于车辆的汽车前照灯 |
| FR3087875B1 (fr) | 2018-10-25 | 2021-07-30 | Valeo Vision | Module lumineux pour dispositif d'eclairage de vehicule |
| CN209688723U (zh) * | 2019-03-19 | 2019-11-26 | 常州星宇车灯股份有限公司 | Led光源车灯远近光一体模组和具有其的车辆 |
| EP4162194B1 (de) * | 2020-06-03 | 2025-09-10 | HELLA GmbH & Co. KGaA | Kfz-scheinwerfer |
-
2021
- 2021-07-20 EP EP21186669.4A patent/EP4123217A1/de not_active Withdrawn
-
2022
- 2022-06-20 WO PCT/EP2022/066693 patent/WO2023001462A1/de not_active Ceased
- 2022-06-20 EP EP22733177.4A patent/EP4374107B1/de active Active
- 2022-06-20 KR KR1020237045153A patent/KR20240014515A/ko not_active Ceased
- 2022-06-20 JP JP2024503705A patent/JP7738737B2/ja active Active
- 2022-06-20 US US18/578,548 patent/US12253228B2/en active Active
- 2022-06-20 CN CN202280050287.1A patent/CN117813465A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240318798A1 (en) | 2024-09-26 |
| EP4123217A1 (de) | 2023-01-25 |
| US12253228B2 (en) | 2025-03-18 |
| JP7738737B2 (ja) | 2025-09-12 |
| KR20240014515A (ko) | 2024-02-01 |
| CN117813465A (zh) | 2024-04-02 |
| EP4374107B1 (de) | 2025-05-07 |
| WO2023001462A1 (de) | 2023-01-26 |
| JP2024525913A (ja) | 2024-07-12 |
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