EP3765781A1 - Lichtmodul für kraftfahrzeugscheinwerfer - Google Patents
Lichtmodul für kraftfahrzeugscheinwerferInfo
- Publication number
- EP3765781A1 EP3765781A1 EP19710374.0A EP19710374A EP3765781A1 EP 3765781 A1 EP3765781 A1 EP 3765781A1 EP 19710374 A EP19710374 A EP 19710374A EP 3765781 A1 EP3765781 A1 EP 3765781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- module
- optics
- semiconductor light
- light module
- 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
- 239000004065 semiconductor Substances 0.000 claims abstract description 105
- 239000012141 concentrate Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000001427 coherent effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 13
- 238000009826 distribution Methods 0.000 description 31
- 230000004907 flux Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F21S41/10—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
- F21S41/25—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
- F21S41/265—Composite lenses; Lenses with a patch-like shape
-
- 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
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- 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
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/31—Optical layout thereof
- F21S43/315—Optical layout thereof using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
-
- 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
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape 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
- F21S41/60—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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/20—Direction indicator lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/55—Daytime running lights [DRL]
Definitions
- the present application relates to a light module for a motor vehicle headlight according to the preamble of
- Such a light module is known from US 8,733,992 Bl, which shows a fog light. Such a light module is also assumed to be known per se as a dipped-beam module. From WO 2015/058227 Al a microprojectors exhibiting light module for
- JP 2017-084581 A there is a light module having a plurality of primary optics and a plurality of secondary optics
- the mirrored aperture creates a cut-off line.
- the light serving to produce a low-beam light distribution is generated by a semiconductor light source and focused by a reflector.
- the focused light is directed from the top to the front panel edge.
- An image of the diaphragm edge is made by a projection lens
- an LED Bi-functional module for generating a low beam and high beam distribution of a car headlamp is known.
- a horizontal aperture is made thin here and is additionally illuminated from below for the generation of the main beam component.
- Reflectors or catadioptric optics are used for collimating the LED light.
- a lighting device for motor vehicles is known, the at least three lighting functions such. Low beam, high beam, daytime running lights and / or position light realized.
- the dipped beam is produced analogously to the description in US Pat. No. 6,948,836 B2 and the high beam and daytime running lights are produced in a similar manner as in DE 10 2008 036 192 A1.
- the light module assumed to be known per se has a first semiconductor light source and a first primary optic, the light of the first semiconductor light source bundles in a first focal region.
- the known light module further comprises a second semiconductor light source and a second
- the known light module further has one in the first focal area and in the second focal area
- Aperture combination and a refractive secondary optics the light emanating from the focal areas of the first semiconductor light source and the second
- Semiconductor light source collects and in an apron of the
- Aligned light module and thus illuminates, for example, a lying in front of a motor vehicle roadway.
- the object of the invention is to construct a light module which is as compact as possible, with which at least one low-beam distribution can be produced and which is as simple as possible and can be produced with minimal production and / or adjustment of its optical elements is.
- Light module characterized by the above-mentioned, per se known prior art that the second focal area is different from the first focal area, and that the refractive secondary optics is in one piece, having a first sub-volume, which is in the beam path of light of the first semiconductor light source, that of emanating from the first focal area, and having a second sub-volume, in the beam path of light of the second Semiconductor light source, which emanates from the second focal region, wherein a light entry surface of the first
- Partial volume has a shape that bundles the first beam path in a horizontal direction when using the light module horizontal direction than in a vertical direction in the intended use, wherein a light exit surface of the secondary optics for both
- Partial volumes has a shape that from the
- Focal area is different, and that the secondary optics has a first sub-volume, which lies in the beam path of light of the first semiconductor light source emanating from the first focal area, and a second sub-volume, in the beam path of light of the second
- Semiconductor light source having the second primary optics and the second sub-volume.
- Abbleriumtstrahlen » result in more ways of optimizing the total of the light module generated light distributions than in just one
- Low beam light path For example, by allowing the low beams to be separately switched on and off or dimmed, different combinations may be used
- Light distributions are generated, e.g. City light or motorway light.
- City light is characterized by a
- motorway light is characterized by a comparatively narrow light distribution and a comparatively large range.
- the light module is a one-piece
- Partial volume has a shape that bundles the first beam path in a direction normal use of the light module horizontal direction than in a vertical direction in the intended use, the light propagating in the associated first beam path is concentrated in a comparatively narrow range in the horizontal direction, so that there is one
- Partial volume is designed so that the second sub-volume as a whole, the light of the second semiconductor light source in the horizontal direction less concentrated than in
- a preferred embodiment is characterized in that the light exit surface of the secondary optics is a generally cylindrical-convex light exit surface, wherein the axis of the cylinder transversely to the
- Main emission of the light module extends.
- the light module has a combination of a low beam module and a high beam module.
- the light module is adapted to at least two Abblertztstrahlenlandais and
- a further preferred embodiment is characterized in that the two Abbleriumtstrahlen réelle adjacent to each other between the two high-beam beam paths. It is also preferable that the secondary optics for each
- High beam path has a separate light entrance surface.
- Abbleriumtstrahlengang is produced with the following elements: two low beam semiconductor light sources, two catadioptric primary optics for focusing the light of the low beam semiconductor light sources, one in the
- mirrored aperture combination having a step, and with a projection lens, which is a partial volume of refractive secondary optics.
- Abbleriumtstrahlengang is produced with the following elements: two low beam semiconductor light sources, two catadioptric primary optics for focusing the light of the low beam semiconductor light sources, one in the
- the light entry surface of the further subvolume is a concave free-form surface.
- a further preferred embodiment is characterized in that low-beam and high-beam primary optics are catadioptric primary optics.
- the light module is a
- Signal light module for example, a daytime running light and / or a position light and / or a flashing light module has.
- Front optic combination of transparent plastic are.
- the signal light attachment optics is a Fresnel lens.
- Figure 1 is a plan view of an embodiment of a Kraftmenahinwerfers
- Figure 2 is a side view of the motor vehicle headlight of Figure 1;
- Figure 3 is an oblique view of an embodiment
- Figure 4 is an oblique view of a heat sink with a
- Figure 5 is an oblique view of components of the
- Figure 6 is an oblique view of the components of
- Light module of Figure 5 together with other components of a light module
- FIG. 7 shows a plan view of components of the light module of FIG. 6
- Figure 8 is an oblique view of a refractive
- Figure 9 is a plan view of components of a
- Figure 10 is a plan view of components of a
- inventive light module with a second Abblertztstrahlengang
- Figure 11 is a plan view of components of a
- Figure 12 is a plan view of components of a
- Figure 13 is a plan view of components of a
- inventive light module with a signal light beam path
- Figure 14 is a side view of components ernes
- Figure 15 is an oblique view of components of a
- Figure 1 shows a plan view of a motor vehicle headlight 10 with a horizontal
- FIG. 2 shows the headlight from FIG. 1 in a lateral section.
- Inside the housing 12 an embodiment of a light module 16 according to the invention is arranged.
- the light module 16 has a first one
- the light module 16 further has a second semiconductor light source 26 and a second primary optics 28, the light 30 of the second
- Semiconductor light source 26 in a second focal region 32 bundles.
- Aperture combination 34 projects into the first focal region 24 and into the second focal region 32.
- Luminous flux downstream of the diaphragm 34 arranged refractive secondary optics 36 collects from the
- Semiconductor light source and the second semiconductor light source directs this light in an apron of the light module 16 and the motor vehicle headlight 10, for example, to illuminate a roadway.
- the second focal region 32 is different from the first focal region 24. Both focal areas 24, 32 are preferably adjacent to each other, where they may overlap. The spatial dimensions of both focal areas 24, 32 can be identical.
- the refractive secondary optics 36 is a one-piece cohesively coherent solid and has a first sub-volume 36.6, which lies in the beam path of light 22 of the first semiconductor light source 18, which emanates from the first focal region 24. This beam path is a first Abblertztstrahlengang.
- the secondary optics 36 further has a second sub-volume 36.7, which lies in the beam path of light 30 of the second semiconductor light source 26, which starts from the second focal area 32. This beam path is a second Abblertztstrahlengang.
- a light entry surface of the first sub-volume 36. 6 has a shape that corresponds to the first
- Semiconductor light source 26 when used in the vertical direction bundles more concentrated than in the horizontal direction.
- the light entry surface of the second subvolume 36.7 is designed so that the second subvolume 36.7 collectively bundles the light of the second semiconductor light source 26 in the horizontal direction less than in FIG.
- FIG. 3 shows an advantageous exemplary embodiment of a light module 16 according to the invention which is capable of producing a plurality of different light distributions.
- a Heatsink 38 which has a plurality of cooling fins in the illustrated embodiment.
- the heat sink 38 is
- the light module 16 has a signal light component, of which in the figure 1 a scattering structures having, transparent lens 42 can be seen.
- the light module 16 has a combination of a
- Low beam module and a high beam module from which combination in the figure 1, the refractive secondary optics 36 is visible.
- Other components of the signal light component and the combination of a low beam module and a high beam module are obscured by opaque covers 44 in FIG.
- Headlamp range control attached to the support frame 40 of the light module 16.
- a rotation axis 50 of a headlight range control is defined.
- an actuator not shown, which pivots the boom 46 and thus the whole light module 16 in the plane perpendicular to the axis of rotation 50.
- FIG. 4 shows the heat sink 38 from FIG. 3 together with a printed circuit board 52 fastened thereto.
- the printed circuit board 52 has first low-beam semiconductor light sources 18.1, 18.2 for a first low-beam light beam, second low-beam light Semiconductor light sources 26.1, 26.2 for a second
- the semiconductor light sources preferably have a
- Abbleriumtstrahlengangs are compared to the low beam semiconductor light sources 26.1, 26.2 of the second
- Low-beam semiconductor light sources and the high-beam semiconductor light sources are arranged side by side, wherein the low-beam semiconductor light sources 18.1, 18.2, 26.1, 26.2 are arranged centrally and the high-beam semiconductor light sources 54.1, 54.2 of the first
- Low beam semiconductor light sources 26.1, 26.2 of the second Abbleriumtstrahlengangs are arranged.
- the high beam semiconductor light sources are all at a first height
- the low beam semiconductor light sources are all at a second level.
- the second altitude is above the first altitude.
- the semiconductor light source 58 for the signal light is arranged centrally above the low-beam semiconductor light sources and the high-beam semiconductor light sources.
- a plug 60 is disposed below the semiconductor light sources, which serves as an interface for supplying power to the mounted on the board 52 semiconductor light sources and for driving the
- Semiconductor light sources by a light controller is used.
- FIG. 5 shows the subject matter of FIG. 4 after assembly of a front attachment combination 62
- Attachment optics combination 62 consists of an attachment optics 64 for the signal light semiconductor light source and in each case a primary optics 20.1, 20.2, 28.1, 28.2 for each
- the attachment optics 64 is disposed in front of the signal light semiconductor light source 58.
- Each primary optics is arranged in front of a respective low-beam semiconductor light source and in each case a high-beam semiconductor light source.
- the attachment optic combination 62 is preferably one
- Signal light attachment optics 64 is shown in the
- Embodiment a Fresnel lens.
- the low beam and high beam primary optics 20.1, 20.2, 28.1, 28.2 64.1, 64.2, 66.1, 66.2 are catadioptric primary optics in the illustrated embodiment. They are preferably together with the signal light attachment optics 64 components of the one-piece cohesively related
- Front optic combination 62 made of transparent plastic.
- FIG. 6 shows the subject matter of FIGS. 3 to 5 together with a diaphragm combination 68 which structured lens 42 for the signal light, the secondary optics 36 and a secondary optics holder 37, which is used to attach the secondary optics 36 on the remaining light module and beyond also exerts no optical function.
- the diaphragm combination 68 serves as a diaphragm for the
- Aperture combination 68 is shown in the
- the specular diaphragm surface protrudes into the low-beam light path. It is the
- Aperture 68 arranged so that their the
- Secondary optics 36 facing diaphragm edge is illuminated by all low-beam semiconductor light sources.
- the specular diaphragm surface closes with light rays incident from the primary optics of the low beam, which impinge on the specular diaphragm surface, preferably at an acute angle, ie an angle which is smaller than 90 °.
- the light module 16 when used properly, the light module 16 is horizontally aligned or has only an inclination angle to the horizontal, which is smaller than 30 °. Due to the specular aperture surface incident light is reflected back into the Abbleriumtstrahlengang, which contributes to a good optical efficiency of the light module.
- the optical efficiency is the proportion of the light generated by the low beam semiconductor light sources, which is ultimately used to generate the
- the diaphragm combination 68 has a first diaphragm half 68.1 and a second diaphragm half 68.2.
- the first diaphragm half 68.1 has a step 68.3.
- the step 68.3 consists of three partial surfaces, which adjoin each other in pairs and of which the two outer
- Partial surfaces are arranged offset from each other in a proper use of the light module in the vertical direction.
- the step is arranged such that a surface normal of the inner partial surface lying between the two outer partial surfaces transversely to the
- Main emission direction 70 of the light module is located.
- Aperture edge limited side of the diaphragm combination 68 projects into the focal areas 24, 32 (see FIG. 1)
- the stage 68.3 is arranged so that it protrudes into the beam path of the first Abblertztstrahlengangs. This stage 68.3 is used to generate a step in the cut-off of an asymmetric low-beam distribution.
- the stage (68.3) having the first (Abblertztstrahlengang) is a Abblertztstrahlengang, which focuses the light strong.
- the other low-beam light path is the second
- Abbleriumtstrahlengang the light less concentrated and rather spread wide.
- the projecting in this second Abblertztstrahlengang second diaphragm half preferably has no step.
- an embodiment in the form of a one-piece diaphragm combination 68 is preferred. Furthermore, it is also possible in principle that the Iris combination 68 along the
- the diaphragm can also extend in the vertical direction from the optically effective diaphragm edge.
- the optically effective diaphragm edge which is the bright-dark limit of the low beam distribution in the apron of the
- Light module is then an upper edge of the aperture.
- FIG. 6 shows in particular a preferred one
- Secondary optics 36 as generally cylindrical-convex
- Light module 16 extends.
- the main emission direction 70 falls when the intended use of the
- refractive secondary optics 36 not. An exception applies at best for the left and right end of the
- FIG. 7 shows parts of the light module 16 in a plan view.
- the light emerging from the left pair of primary optics 20.1, 20.2 of the associated semiconductor light sources extends in a first low-beam light path
- the light emerging from the left-hand third pair of primary optics 28.1, 28.2 of the associated semiconductor light sources extends in FIG a second Abbleriumtstrahlengang.
- To the left of the two Abblertztstrahlen réellen runs a first high-beam beam path
- to the right of the two Abblertztstrahlen »n runs a second
- FIG. 7 also shows that the light entry surfaces of the refractive secondary optics 36 are arranged in a plane in which the cylinder axis 71 and the main emission direction 70 of FIG
- Light modules 16 are different shapes.
- the secondary optics has a separate for each Abbleriumtstrahlengang and each high-beam beam path
- the light entrance surface 36.2 is a light entrance surface of the first
- the light entry surface 36.3 is a light entrance surface of the first
- the light entrance surface 36.4 is a light entrance surface of the second Abblertztstrahlengangs and limits
- Partial volume (36.7) of refractive secondary optics The light entry surface 36.5 is a light entrance surface of the second high beam path.
- the individual light entry surfaces are in the same order
- FIG. 8 shows the secondary optics from FIG. 7 with a view of the four light entry surfaces 36.2, 36.3, 36.4, 36.5 of the four beam paths.
- the refractive secondary optics 36 is a one-piece component. The shape of the two
- Abbleriumtstrahlengangs are in the said plane in which the cylinder axis 71 and the main emission direction 70 of the light module 16 are convex, while the shape of the light entry surface 36.4 of the sub-volume of
- Abbleriumtstrahlengangs in the said plane is concave.
- a low-beam light distribution is generated by superimposing light propagating in at least two low beam light paths, wherein a first low beam beam path is an imaging subvolume of a refractive beam
- the number of low-beam or high-beam beam paths can be increased by complementing beam paths horizontally or by superimposing beam paths on top of each other.
- the one-piece implementation of the secondary optics has the advantage over a separate realization of a light entry lens combination and a cylindrical lens that exact positioning of such a lens combination with the cylindrical lens, be it by means of precisely produced mountings or adjustment, is eliminated.
- FIG. 9 shows a plan view of the beam paths of the two low-beam light paths 72 and 74 in the example shown.
- a first Abblertztstrahlengang 72 is produced with the following elements: Two low-beam semiconductor light sources 18.1, 18.2, two catadioptric primary optics 20.1, 20.2 for focusing the light of the Abblertzt- semiconductor light sources 18.1, 18.2, one in the
- refractive secondary optics 36 is.
- the light exit surface 36.1 has the described cylindrical shape and thus bundles the light in horizontal planes less strongly than in the vertical planes.
- the second low beam light path 74 is produced with the following elements: two low beam semiconductor light sources 26.1, 26.2, two catadioptric primary optics 28.1, 28.2 for focusing the light of the low beam
- the light entry surface 36.4 of this further subvolume 36.7 is preferably a concave one
- the light exit surface 36.1 has the described cylindrical shape and thus bundles the light in horizontal planes less strongly than in the vertical planes.
- the light entry surface 36.4 is thus designed so that the associated further subvolume 36.7 of the refractive secondary optics 36 bundles the light in the horizontal plane less than in the vertical plane.
- this further partial volume 36.7 acts as a diverging lens, while in the vertical plane it acts as a converging lens with the same pixel as the subvolume 36.6 of the first low-beam light path 72.
- 28.1, 28.2 are designed to reflect the light of the Bundle and redirect semiconductor light sources, so that outgoing light from these primary optics
- Semiconductor light sources falls obliquely from above on the front diaphragm edge and is focused in the vicinity of the diaphragm edge, ie in a focal region of the primary optics. In this way arises in the plane of
- Aperture edge a light module-internal light distribution with a light-dark boundary.
- the exact shape of this cut-off line is determined by the shape of the diaphragm edge
- This half-aperture 68.1 is in the first
- Abbleriumtstrahlengang 72 The other diaphragm half 68.2 of the diaphragm combination 68 is located in the second
- Abbleriumtstrahlengang 74 and has no stage. In this way, the second Abblertztstrahlengang 74 generates a straight, horizontally extending external cut-off.
- the refractive secondary optics 36 is designed to image the internal light distribution generated in the plane of the diaphragm edge with step 68.3 onto the road. Since the light entry surface 36.3 of the partial volume 36.6 of the refractive secondary optics 36, which belongs to the first low beam light path 72, concentrates horizontally more strongly than vertically and the light exit surface thereof Partial volume vertically bundles the light vertically than
- Abblertztstrahlengang 74 is the associated
- the light rays emerging from the refractive secondary optics 36 in the second low-beam light path 74 have a horizontally wider directional distribution than those in the second light beam first low-beam light path 72 from the
- Forming the free-form surface serving as the light-entry surface 36. 4 can be the distribution of the light and the
- Width of the light distribution can be controlled.
- FIG. 10 shows a plan view of the second one
- Abbleriumtstrahlengang 74 It can be seen that due to the weaker focusing in the horizontal plane of the light cone on the cylindrical light exit surface 36.1 of the refractive secondary optics is wider than at the associated light entry surface. As FIG. 9 shows, the width of the first one is
- the second Abblertztstrahlengang 74 is shown in the
- Abbleriumtstrahlengang 72 and the adjacent second high beam path By virtue of this position between two adjacent beam paths, a broad region of the light exit surface 36. 1 of the refractive secondary optics 36 can be used for the production of the widely distributed beam path
- Light module 16 are kept small.
- Figure 11 shows a plan view of the
- Each high-beam beam path consists of the following elements: two high-beam semiconductor light sources, two primary optics for focusing the light of the two high-beam semiconductor light sources, a projection lens which is a sub-volume of refractive secondary optics.
- Each light entry surface of a high-beam beam path consists of the following elements: two high-beam semiconductor light sources, two primary optics for focusing the light of the two high-beam semiconductor light sources, a projection lens which is a sub-volume of refractive secondary optics.
- Partial volume concentrates the light more in the horizontal plane than in the vertical plane.
- Light exit surface concentrates the light more strongly in the vertical plane than in the horizontal plane.
- Figure 12 shows a plan view of the two
- the focal lengths The primary optics of the low beam and the high beam are the same size in the described embodiment.
- the focal point of the primary optics for the Abbleriumtstrahlen réelle lies approximately on the front edge of the diaphragm combination 68, the focal point of the primary optics for the high-beam beam paths is approximately in the same plane.
- the focal lengths can also be designed differently, which makes the system very flexible in design.
- the total magnification of the optical system for the high-beam beam paths 76, 78 can be designed differently than for the Abblertztstrahlen réelle 72, 74. This can be advantageous because of low beam and
- FIG. 13 shows a plan view of one
- Signal light beam path 80 The light of the signal light semiconductor light source 58 is focused by the Fresnel lens 64 and the structured lens 42nd
- Prismatic structures on the structured lens 42 further focus the light and distribute it in the desired angular range of a signal light or position light distribution.
- the fact that each prism illuminates approximately the same angular range advantageously produces a bright and uniform
- FIG. 14 shows the beam paths 72, 74, 76, 78, 80 of all the light functions of the light module 16 in a side view
- FIG. 15 shows the beam paths 72, 74, 76, 78, 80 of all functions in an oblique view.
- the low beam semiconductor light sources are separately switchable and / or dimmable.
- different light distributions can be generated, for example, a broad city light by a large luminous flux of the second Abblertztstrahlengangs not so large luminous flux of the first Abblertztstrahlengangs or a motorway light through a large luminous flux of the first Abblertztstrahlengangs not so large
- High-beam light paths which have a vertical edge in the intermediate image plane of the high-beam path, external beam distribution can be generated with vertical light-dark boundaries.
- different high-beam beam paths can illuminate different angular ranges, and so an electronically controllable partial high-beam light can be realized (so-called "matrix beam”).
- the number of low-beam or high-beam beam paths can be increased by complementing beam paths horizontally or by superimposing beam paths on top of each other.
- the refractive secondary optics In the first case, the refractive secondary optics must simply be extended horizontally. In the second case one needs an additional refractive secondary optics per
- the signal light beam path can alternatively or additionally be used as a beam path for a flashing light. It is advantageous to use yellow glowing semiconductor light sources, in particular if the beam path is to be used in parallel for signal light. However, it is also possible to use white light-emitting semiconductor light sources and the attachment optics and / or the
- High-beam beam paths can also be used for the daytime running light function. For this purpose, they are strongly dimmed and switched on together with the Tagfahr (signal) light source, whereby both the surface of the structured lens and the associated surface of refractive secondary optics are illuminated.
- the light module is rotatably mounted about a vertical axis and via a suitable actuator
- Light module can be used as cornering light module.
- the semiconductor light sources are preferably light emitting diodes.
- a laser light source in conjunction with a phosphor plate illuminated by the laser and thereby excited can also be used as the light source. This applies to a subset of the light sources as well as to all
- Light sources of the light module This may possibly the
- the light module has no components serving to generate a signal light light distribution.
- the light module in this case is a bi-function light module with which
- the catadioptric primary optics can be realized in whole or in part as well as concave mirror reflectors which, for example, are metallically mirror-coated and delimit an air-filled reflection volume.
- the board plane is approximately horizontal and arranged thereon
- Semiconductor light sources upwards, preferably vertically upwards, into which reflectors radiate to their light in
- the catadioptric primary optics can also be replaced in whole or in part by lenses or lens systems. Next, it is also possible the catadioptric
- Primary optics can be completely or partially through
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- General Engineering & Computer Science (AREA)
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- 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 |
---|---|---|---|
DE102018105720.2A DE102018105720B4 (de) | 2018-03-13 | 2018-03-13 | Lichtmodul für Kraftfahrzeugscheinwerfer |
PCT/EP2019/055723 WO2019175018A1 (de) | 2018-03-13 | 2019-03-07 | Lichtmodul für kraftfahrzeugscheinwerfer |
Publications (2)
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EP3765781A1 true EP3765781A1 (de) | 2021-01-20 |
EP3765781B1 EP3765781B1 (de) | 2022-08-03 |
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Application Number | Title | Priority Date | Filing Date |
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EP19710374.0A Active EP3765781B1 (de) | 2018-03-13 | 2019-03-07 | Lichtmodul für kraftfahrzeugscheinwerfer |
Country Status (3)
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EP (1) | EP3765781B1 (de) |
DE (1) | DE102018105720B4 (de) |
WO (1) | WO2019175018A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102020117785A1 (de) | 2020-07-06 | 2022-01-13 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Kraftfahrzeugscheinwerfer mit einem Leuchtmittel mit viereckiger Lichtaustrittsfläche |
FR3138498A1 (fr) * | 2022-07-28 | 2024-02-02 | Valeo Vision | Module d’éclairage et de signalisation lumineux |
FR3138495A1 (fr) * | 2022-07-28 | 2024-02-02 | Valeo Vision | Bloc optique d’un module d’éclairage et de signalisation lumineuse |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4080780B2 (ja) | 2002-04-23 | 2008-04-23 | 株式会社小糸製作所 | 光源ユニット |
ATE386234T1 (de) | 2005-12-14 | 2008-03-15 | Tyc Brother Ind Co Ltd | Projektions-beleuchtungseinrichtung |
DE102008036192B4 (de) | 2008-08-02 | 2012-05-03 | Automotive Lighting Reutlingen Gmbh | Kraftfahrzeugbeleuchtungseinrichtung |
DE102010023177A1 (de) | 2010-06-09 | 2011-12-15 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für eine Beleuchtungseinrichtung eines Kraftfahrzeugs |
US8733992B2 (en) | 2012-10-01 | 2014-05-27 | Osram Sylvania, Inc. | LED low profile linear front fog module |
AT514967B1 (de) | 2013-10-25 | 2015-08-15 | Zizala Lichtsysteme Gmbh | Mikroprojektions-Lichtmodul für einen Kraftfahrzeugscheinwerfer |
DE102014226650B4 (de) | 2014-12-19 | 2023-05-25 | Osram Gmbh | Leuchte |
JP6595881B2 (ja) | 2015-10-27 | 2019-10-23 | スタンレー電気株式会社 | 拡散配光光学系及び車両用灯具 |
DE102016125887A1 (de) * | 2016-12-29 | 2018-07-05 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für Kraftfahrzeugscheinwerfer |
-
2018
- 2018-03-13 DE DE102018105720.2A patent/DE102018105720B4/de not_active Expired - Fee Related
-
2019
- 2019-03-07 EP EP19710374.0A patent/EP3765781B1/de active Active
- 2019-03-07 WO PCT/EP2019/055723 patent/WO2019175018A1/de unknown
Also Published As
Publication number | Publication date |
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DE102018105720A1 (de) | 2019-09-19 |
WO2019175018A1 (de) | 2019-09-19 |
DE102018105720B4 (de) | 2019-10-24 |
EP3765781B1 (de) | 2022-08-03 |
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