EP3721134B1 - Projection device for a motor vehicle headlight - Google Patents
Projection device for a motor vehicle headlight Download PDFInfo
- Publication number
- EP3721134B1 EP3721134B1 EP18811492.0A EP18811492A EP3721134B1 EP 3721134 B1 EP3721134 B1 EP 3721134B1 EP 18811492 A EP18811492 A EP 18811492A EP 3721134 B1 EP3721134 B1 EP 3721134B1
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- EP
- European Patent Office
- Prior art keywords
- micro
- optics
- light
- shading
- diaphragm
- 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.)
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Images
Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
- F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
- F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention also relates to a micro-projection light module for a motor vehicle headlight, comprising at least one projection device according to the invention and at least one light source for feeding light into the projection device.
- the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising at least one micro-projection light module according to the invention.
- the document AT514967B1 shows a projection device of the type mentioned. It shows a projection device which has a number of micro entry optics and micro exit optics, with diaphragm devices being arranged between the micro entry and exit optics.
- a projection device which has a number of micro entry optics and micro exit optics, with diaphragm devices being arranged between the micro entry and exit optics.
- diaphragm devices being arranged between the micro entry and exit optics.
- the local intensity In order not to exceed the legally specified maximum values of the light intensity within a light distribution, it is necessary to design the local intensity to be correspondingly low.
- shading elements are provided in the projection lens so that the illuminance is lower at these points.
- the previous measures for darkening individual areas of the light distribution include manipulating the projection lens or the lighting device using a shading element.
- This shading element greatly darkens the area to be shaded and a consistently uniform brightness transition to areas that are not darkened could not be realized with such a shading element.
- the shaded area in the photo was previously clearly recognizable to the naked eye as a local minimum of the intensity of the light distribution and thus had a disadvantageous effect on the overall impression of the light distribution.
- Another projection device for a motor vehicle headlight is from DE102016112617 B3 known.
- An optically effective diaphragm edge is understood to be a diaphragm edge that engages in the imaging of the light distribution to limit the same.
- the wording "essentially the entire .... exiting light” means that the aim is to radiate at least the majority of the entire luminous flux exiting a micro entry optics solely into the associated micro exit optics. In particular, care must be taken to ensure that no luminous flux enters the adjacent micro exit optics in such a way that no adverse optical effects, such as scattered light, which can lead to glare, etc., result.
- the wording “wherein the micro entry optics are designed in such a way and/or the micro entry optics and the micro exit optics are arranged in such a way in relation to one another” also means that additional measures such as screens (see below) can be provided that either exclusively or preferably in addition to their actual function also have the function that the entire luminous flux is directed precisely onto the associated micro-exit optics.
- both the focal lengths and the dimensions of the micro-optics are significantly smaller than with "conventional" optics.
- the center thickness can also be reduced compared to conventional optics.
- the overall depth of the projection device can be significantly reduced compared to conventional optics.
- the luminous flux can be increased or scaled, with an upper limit with regard to the number of micro-optical systems being limited primarily by the manufacturing processes available in each case. For example, 200 to 400 micro-optical systems can be sufficient or favorable for generating a low beam function, although this is not intended to describe a limiting value, either upwards or downwards, but merely as an example number.
- it is beneficial to increase the number of similar micro-optics.
- the large number of micro-optics can be used to introduce micro-optics with different optical behavior into a projection system in order to generate or superimpose different light distributions. The large number of micro-optics also allows design options that are not available with conventional optics.
- Such a light module is also scalable, ie several light modules of the same or similar construction can be combined to form a larger overall system, eg a vehicle headlight.
- the lens typically has a diameter of between 60 mm and 90 mm.
- the individual micro-optical systems have typical dimensions of approximately 2 mm ⁇ 2 mm (in V and H) and a depth (in Z, see e.g figure 2 ) of about 6mm-10mm, resulting in a significantly smaller depth of a module according to the invention in the Z-direction compared to conventional modules.
- the light module or the projection device according to the invention can have a small overall depth and can basically be freely shaped, i.e. it is possible, for example, to design a first light module for generating a first partial light distribution separately from a second light module for a second partial light distribution and this relatively freely, i.e. vertically and/or or to be arranged horizontally and/or offset in depth, so that design specifications can also be implemented more easily.
- a further advantage of a light module or a projection device according to the invention is that the exact positioning of the light source(s) in relation to the projection device is no longer necessary. Exact positioning is less critical insofar as the distance between the illumination unit and the microlens array does not have to be exact.
- the real light sources are, for example, almost punctiform light sources such as light-emitting diodes, whose light is collimated by collimators such as Compound Parabolic Concentrators (CPC) or TIR lenses (Total Inner Reflection).
- the projection device or the light module can also contain additional micro-optical systems, with the help of which other types of light distributions than a low beam distribution are generated.
- a specific type of light distribution is understood to mean a light distribution generated in accordance with relevant standards, for example light distribution in accordance with the standards of the UN/ECE regulations in the states of the European Union, in particular regulations 123 and 48, or relevant standards in the other countries or regions .
- the term "roadway” is only used below for simplified representation, because of course it depends on the local conditions whether the photograph is actually on the roadway or also extends beyond it.
- the light image is projected onto a vertical surface in accordance with the relevant standards, for example in accordance with regulations number 123 and 48 of the United Nations Economic Commission for Europe (UN/ECE) "Uniform conditions for the approval of adaptive front lighting systems (AFS) for motor vehicles” and “Uniform conditions for the approval of vehicles with regard to the installation of lighting and light signal devices", the Federal Motor Vehicle Safety Standard FMVSS No.
- the first group it is also possible for the first group to have shading elements.
- the independent claim of the present invention does not state that the first group must be free of shading elements, but rather that the second group has at least a second variant of the aperture device that differs from the first variant, for example by providing a different type of shading element .
- the first group can also be free of shading elements.
- each low-beam micro-optics system that has a diaphragm device of the second variant to have exactly one shading element that protrudes along a section of the profile of the diaphragm edge.
- the shading element preferably extends in the vertical direction in order to shade the point "50L" of the light distribution. It is of course also possible to provide further shading elements which do not protrude from the edge of the screen. A corresponding darkening of the 50L point can be created, for example, by choosing a suitable number and dimensioning of low-beam micro-optics with shading elements according to the second variant.
- the expression "protruding from the aperture edge” is understood to mean that the aperture edge is still recognizable as such as an aperture edge for a low beam distribution.
- the longitudinal extent of the screen edge which is composed of straight screen edge sections that are horizontally or inclined, is thus interrupted by the protruding shading element.
- the diaphragm edge is no longer recognizable in the area of a completely opaque shading element, since this is due to the presence of the protruding shading element in this area is no longer visible as an edge.
- the aperture edge continues (optically visible) before and after the shading element.
- each low-beam micro-optics which has a diaphragm device of the second variant, has exactly one shading element that is spaced apart from the diaphragm edge and is completely surrounded by a light-transmitting area of the diaphragm device.
- These shading elements can be arranged in such a way that they cause shading within segment 10 of a low beam distribution.
- a correspondingly homogeneous and uniform darkening within the segment 10 can be created, for example, by choosing a suitable number and dimensioning of anti-glare micro-optics with these shading elements.
- the at least one diaphragm device is connected to a light-transmissive carrier, which is coated on its surface with an at least partially opaque material to form a predeterminable light distribution.
- the at least partially opaque layer can be applied, for example, by means of a lithographic process.
- a further screen device could also be provided on the other side of the carrier, e.g. to avoid scattered light.
- At least individual shading elements of the screen device of the second variant are partially translucent.
- the light transmission of individual shading elements can also vary.
- At least individual shading elements of the screen device of the second variant are completely opaque.
- the design of the overall shading can be varied by suitably selecting the number and design of the shading elements.
- individual shading elements of the screen device of the second variant to limit the luminosity of the light distribution in a 50L measuring point are provided.
- the 50L measurement point is at an angle 3.43* to the left (L) and 0.86° down (D).
- a measuring point without a special designation is at 0.86D 3.5L.
- the shaded area could include a horizontal and vertical angle of (1° or 2°) to 5° and could be circular, for example.
- the size of at least one shading element of a screen device of the second variant differs from the size of at least one shading element of a further screen device of the second variant.
- size is understood to mean the area over which the respective shading element extends. Either the shape can be scaled. As an alternative to this, it is also possible for the shapes of the shading elements to differ from one another, i.e. to represent different geometric figures.
- segment 10 means a line at elevation -4° (-4D) between 4.5°L and 2R°.
- the width can therefore be a maximum of 10°, for example, and the height can be between 1° and 3°, for example.
- This shading element can thus be in the form of a floating bar, with the dimensions of the individual shading elements being able to vary in order to produce a homogeneous transition.
- the production of these shading elements using lithographic processes is particularly advantageous.
- the carrier of the at least one screen device consists of glass.
- the entry optics and the exit optics are firmly connected to at least one carrier of the diaphragm device arranged between the entry optics and the exit optics.
- the fixed connection of the entrance optics and the exit optics with the at least one carrier is in each case designed as a transparent adhesive connection.
- the total number of low-beam micro-optics includes a third group of low-beam micro-optics with aperture devices of a third variant by the aperture device of the third variant *
- a light-shading area of the panel device that extends up to the panel edge, at least one at least partially translucent window is formed for the formation of a light distribution above the light-dark boundary.
- This area above the light-dark boundary is thus illuminated so that traffic signs, for example, can be seen more easily.
- This light function is often referred to as "sign light", the intensity of the illumination in this area being able to be determined by the design of the translucent window and by the number of low-beam micro-optics of the third variant.
- a combination of the low beam micro-optics of the third variant with those of the first or second variant is also possible.
- different low-beam micro-optics have (eg at least two) differently designed aperture devices or (eg at least two) shading elements of different sizes, with the photometric area shaded by the shading elements at least partially overlapping.
- This can apply to the shading elements of the first, the second and/or the third variant or group.
- the shaded photometric area of the smaller shading element is completely included in the shaded photometric area of the next larger shading element or the shading elements can be designed in such a way that this effect occurs.
- the invention also relates to a micro-projection light module for a motor vehicle headlight, comprising at least one projection device according to the invention and at least one light source for feeding light into the projection device.
- An LED light source is preferably assigned to each low-beam micro-optic.
- the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising at least one micro-projection light module according to the invention.
- the invention relates to a vehicle, in particular a motor vehicle, with at least one vehicle headlight according to the invention.
- figure 1 shows an exemplary image of a section of a low beam distribution according to the prior art.
- the brightness within the light distribution is illustrated by isolines that illustrate areas of the same illuminance.
- the illuminance reaches a maximum just below the cut-off line and decreases towards the outside.
- the course of the light-dark boundary is clearly recognizable.
- Measuring point 50L lies within this area and is correspondingly darkened, with the darkening in the light image being inhomogeneous and thus clearly recognizable, as can be seen from the strong gradient of the illuminance in the area of measuring point 50L.
- FIG 2 shows a schematic representation of an exemplary projection device 1 in a micro-projection light module 6, the projection device 1--as discussed below--equipped with an embodiment of diaphragm devices according to the invention can be.
- a projection device 1 according to the invention equipped in this way is suitable for use in a motor vehicle headlight, with the projection device 1 for imaging light being assigned to at least one light source 2 assigned to the projection device 1 (however, each micro entry optics 3a is preferably assigned an individually controllable light source, particularly preferably an LED ), is set up in an area in front of a motor vehicle in the form of at least one light distribution, namely a low beam light distribution and/or a front light distribution.
- the light emitted by the light source 2 can be directed to entry optics 3 via a collimator 7, for example.
- the projection device 1 comprises entry optics 3, which have a total number of micro entry optics 3a, which are preferably arranged in an array, exit optics 4, which have a total number of micro exit optics 4a, which are preferably arranged in an array, each Micro entry optics 3a is assigned exactly one micro exit optics 4a.
- the micro entry optics 3a are designed in such a way and/or the micro entry optics 3a and the micro exit optics 4a are arranged relative to one another in such a way that essentially the entire light exiting from a micro entry optics 3a only enters the associated micro exit optics 4a, and wherein the light preformed by the micro entry optics 3a is imaged by the micro exit optics 4a in a region in front of the motor vehicle as at least one light distribution.
- Each micro entry optics 3a is designed in such a way that the micro entry optics 3a focuses the light passing through it into at least one micro entry optics focal point, with the micro entry optics focal point between the micro entry optics 3a and the associated micro exit optics 4a is located, with at least one diaphragm device 8a (see Fig figure 3 ) is arranged, wherein in each case a low-beam micro-optic is formed at least by the micro-entry optics 3a, the associated micro-exit optics 4a and the at least one diaphragm device 8a lying in between.
- the at least one aperture device 8a is set up to limit the light distribution imaged by the respective micro exit optics 4a in such a way that the light distribution emitted by the micro exit optics 4a forms a proportion of the low beam distribution, with the aperture device 8a having at least one optically effective aperture edge K that maps the course of a light-dark boundary of the low beam distribution (see figures 4a , 5a and 6a ) having.
- FIGs 3 (a) to (d) show a schematic representation of individual steps of a method for producing a projection device 1 according to the invention for a motor vehicle headlight, wherein the projection device 1 is set up to image light from at least one light source 2 assigned to the projection device 1 in an area in front of a motor vehicle in the form of at least one light distribution.
- figure 3 (a) shows a carrier 5 with a first flat side 5a, on which in figure 3 (b) a first screen device 8a is applied, for example by screen printing or metal vapor deposition, the carrier 5 being at least partially made of glass.
- figure 3 (c) shows the next step b) of the method, namely the attachment of an entrance optics 3, which has a number of micro entrance optics 3a, which are preferably arranged in an array, on the first flat side 5a of the carrier 5, the entrance optics 3 being the first Aperture device 8a is at least partially covered and arranged in such a way that light can at least partially enter the carrier 5 via the entrance optics 3 through the first aperture device 8a, and the entrance optics 3 are fastened to the first flat side 5a of the carrier 5 by means of a light-transmissive adhesive.
- figure 3 (d) shows a state in which the entrance optics 3 is already firmly connected to the carrier 5.
- a second screen device can be applied—for example to avoid scattered light—on a second flat side 5b of the carrier 5 opposite the first flat side 5a.
- the exit optics 4 can then be located on the opposite flat side of the carrier 5 .
- FIG 4a shows an exemplary configuration of diaphragm devices 8a′ lying side by side according to the prior art and FIG Figure 4b a light distribution generated thereby. This shows that point 50L is not darkened.
- Figure 5a shows a schematic representation of an embodiment according to the invention of diaphragm devices 8a' and 8a" lying next to one another, with the diaphragm devices 8a" having shading elements A50L, which are arranged to darken the area around the measuring point 50L, with the shading elements A50L of individual diaphragm devices 8a" being used to generate as homogeneous a Brightness transition can be designed differently.
- Figure 5b shows a light distribution by means of a projection device 1 comprising aperture devices according to FIG Figure 5a was generated. A comparison with the light distribution according to 1 makes particularly clear that the light distribution according to Figure 5a Although a darkening is also achieved in the measuring point 50L, the transition to the environment is significantly more homogeneous.
- FIG. 6a a further schematic representation of an embodiment according to the invention of screen devices 8a' and 8a" lying next to one another.
- Individual light-shading elements ASegm10 are now provided therein, which are spaced apart from the screen edge K and which are completely surrounded by a light-transmitting area of the screen device 8a".
- These shading elements ASegm10 can be provided in the second variant of the screen devices 8a" alone or in combination with the shading elements A50L.
- screens (not shown in the figures) are also provided in the embodiment 6a, which have no shading elements. Ie there are also screens without shading for segment 10 and 50 L. In general, the number and
- Size and the geometric shape of the shading elements can be selected depending on the desired configuration of the light distribution to be generated.
- Figure 6b shows a by means of a projection device comprising the aperture devices according to FIG Figure 6a generated light distribution.
- an additional darkening was achieved in the area of the segment 10 of the light distribution, with a uniform brightness transition also being created here.
- the reduction options can be arranged arbitrarily on the array. It would also be possible to make the law points variable.
- Class W bad weather light
- Class C the legal upper limit
- Exactly the opposite can apply to the 50L. In bad weather light, this can be significantly higher than with Class C.
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- General Engineering & Computer Science (AREA)
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die Erfindung betrifft eine Projektionseinrichtung für einen Kraftfahrzeugscheinwerfer, wobei die Projektionseinrichtung zur Abbildung von Licht zumindest einer der Projektionseinrichtung zugeordneten Lichtquelle in einem Bereich vor einem Kraftfahrzeug in Form zumindest einer Lichtverteilung, nämlich einer Abblendlichtverteilung, eingerichtet ist, wobei die Projektionseinrichtung umfasst:
- eine Eintrittsoptik, welche eine Gesamtanzahl von Mikro-Eintrittsoptiken (3a) aufweist, welche vorzugsweise in einem Array angeordnet sind,
- eine Austrittsoptik, welche eine Gesamtanzahl von Mikro-Austrittsoptiken (4a) aufweist, welche vorzugsweise in einem Array angeordnet sind, wobei
- jeder Mikro-Eintrittsoptik genau eine Mikro-Austrittsoptik zugeordnet ist,
- wobei die Mikro-Eintrittsoptiken derart ausgebildet und/oder die Mikro-Eintrittsoptiken und die Mikro-Austrittsoptiken derart zueinander angeordnet sind, dass im Wesentlichen das gesamte aus einer Mikro-Eintrittsoptik austretende Licht nur in die zugeordnete Mikro-Austrittsoptik eintritt, und wobei das von den Mikro-Eintrittsoptiken vorgeformte Licht von den Mikro-Austrittsoptiken in einen Bereich vor dem Kraftfahrzeug als zumindest eine Lichtverteilung abgebildet wird,
- wobei jede Mikro-Eintrittsoptik das durch sie durchtretende Licht in zumindest einen Mikro-Eintrittsoptik-Brennpunkt fokussiert, wobei der Mikro-Eintrittsoptik-Brennpunkt zwischen der Mikro-Eintrittsoptik und der zugeordneten Mikro-Austrittsoptik liegt, wobei zwischen der Mikro-Eintrittsoptik und der Mikro-Austrittsoptik zumindest eine Blendenvorrichtung angeordnet ist,
- wobei jeweils zumindest durch die Mikro-Eintrittsoptik, die zugeordnete Mikro-Austrittsoptik sowie die dazwischen liegende zumindest eine Blendenvorrichtung eine Abblendlichtmikrooptik ausgebildet ist,
- wobei die zumindest eine Blendenvorrichtung dergestalt zur Begrenzung der durch die jeweilige Mikro-Austrittsoptik abgebildeten Lichtverteilung eingerichtet ist, dass die durch die Mikro-Austrittsoptik abgestrahlte Lichtverteilung einen Anteil an der Abblendlichtverteilung ausbildet, wobei die Blendenvorrichtung hierfür zumindest eine den Verlauf einer Hell-Dunkel-Grenze der Abblendlichtverteilung abbildende optisch wirksame Blendenkante aufweist.
- an entrance optics, which has a total number of micro entrance optics (3a), which are preferably arranged in an array,
- exit optics, which has a total number of micro-exit optics (4a), which are preferably arranged in an array, wherein
- exactly one micro exit optic is assigned to each micro entry optic,
- wherein the micro-entry optics are designed in such a way and/or the micro-entry optics and the micro-exit optics are arranged in relation to one another in such a way that essentially all of the light exiting from a micro-entry optic only enters the associated micro-exit optics, and wherein that of the Micro entry optics preformed light is imaged by the micro exit optics in an area in front of the motor vehicle as at least one light distribution,
- each micro entrance optic focusing the light passing through it into at least one micro entrance optics focal point, the micro entrance optics focal point lying between the micro entrance optics and the associated micro exit optics, between the micro entrance optics and the micro exit optics at least one diaphragm device is arranged,
- wherein in each case a low beam micro-optic is formed at least by the micro-entry optics, the associated micro-exit optics and the at least one diaphragm device located in between,
- wherein the at least one diaphragm device is set up to limit the light distribution imaged by the respective micro exit optics in such a way that the light distribution emitted by the micro exit optics forms a proportion of the low beam distribution, with the diaphragm device defining at least one of the course of a light-dark boundary for this purpose optically effective aperture edge imaging the low beam distribution.
Die Erfindung betrifft des Weiteren ein Mikroprojektions-Lichtmodul für einen Kraftfahrzeugscheinwerfer, umfassend zumindest eine erfindungsgemäße Projektionseinrichtung sowie zumindest eine Lichtquelle zur Einspeisung von Licht in die Projektionseinrichtung.The invention also relates to a micro-projection light module for a motor vehicle headlight, comprising at least one projection device according to the invention and at least one light source for feeding light into the projection device.
Ferner betrifft die Erfindung einen Fahrzeugscheinwerfer, insbesondere Kraftfahrzeugscheinwerfer, umfassend zumindest ein erfindungsgemäßes Mikroprojektions-Lichtmodul.Furthermore, the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising at least one micro-projection light module according to the invention.
Aus dem Stand der Technik ist z.B. das Dokument
Es ist eine Aufgabe der Erfindung, die obig erwähnten Nachteile des Standes der Technik zu überwinden. Diese Aufgabe wird mit einer Projektionseinrichtung der eingangs genannten Art gelöst, bei der erfindungsgemäß die Gesamtanzahl der Abblendlichtmikrooptiken zumindest zwei Gruppen an Abblendlichtmikrooptiken umfasst, nämlich
- eine erste Gruppe an Abblendlichtmikrooptiken mit zumindest einer ersten Variante an Blendenvorrichtungen, und
- eine zweite Gruppe an Abblendlichtmikrooptiken mit zumindest einer zweiten Variante an Blendenvorrichtungen, wobei die Ausgestaltung der zweiten Variante an Blendenvorrichtungen zumindest darin von der Ausgestaltung der ersten Variante an Blendenvorrichtungen abweicht, indem die zweite Variante an Blendenvorrichtungen
- * entlang eines Abschnitts des Verlaufes der Blendenkante abstehende Abschattungselemente (50L) aufweist, wobei sich die Blendenkante (K) vor und nach dem Abschattungselement (A50L) wieder (optisch sichtbar) fortsetzt, und/oder
- * von der Blendenkante beabstandete Abschattungselemente (Segm 10), die von einem lichtdurchlässigen Bereich der Blendenvorrichtung vollständig umschlossen sind, aufweist.
- a first group of low-beam micro-optics with at least a first variant of diaphragm devices, and
- a second group of low-beam micro-optics with at least one second variant of diaphragm devices, the configuration of the second variant of diaphragm devices differing at least in this respect from the configuration of the first variant of diaphragm devices in that the second variant of diaphragm devices
- * has protruding shading elements (50L) along a section of the course of the shading element, the shading edge (K) continuing again (optically visible) before and after the shading element (A50L), and/or
- * Has shading elements (Segm 10) at a distance from the edge of the screen, which are completely enclosed by a light-transmitting area of the screen device.
Durch Vorsehen von zumindest zwei Varianten von Blendenvorrichtungen ist es möglich, durch entsprechende Wahl der Anzahl und/oder Ausgestaltung der Blendenvorrichtungen bzw. etwaig darin vorgesehener Abschattungselemente die Abblendlichtverteilung vorteilhaft zu beeinflussen, indem gesetzliche Vorgaben hinsichtlich abgedunkelter Bereiche in der Lichtverteilung einerseits genau erfüllt werden können und gleichzeitig ein gleichmäßiger Übergang in der Lichtverteilung geschaffen werden kann.By providing at least two variants of screen devices, it is possible to advantageously influence the low beam distribution by appropriate selection of the number and/or design of the screen devices or any shading elements provided therein, in that legal requirements with regard to darkened areas in the light distribution can be precisely met on the one hand and at the same time a uniform transition in the light distribution can be created.
Unter einer optisch wirksamen Blendenkante wird eine Blendenkante verstanden, die in die Abbildung der Lichtverteilung zur Begrenzung derselben eingreift.An optically effective diaphragm edge is understood to be a diaphragm edge that engages in the imaging of the light distribution to limit the same.
Die Formulierung "im Wesentlichen das gesamte .... austretende Licht" bedeutet dabei, dass danach getrachtet wird, zumindest den Großteil des gesamten Lichtstrom, der aus einer Mikro-Eintritts-Optik austritt, einzig in die zugeordnete Mikro-Austritts-Optik einzustrahlen. Insbesondere ist danach zu trachten, keinen Lichtstrom in die benachbarten Mikro-Austritts-Optiken in einer Art und Weise einzustrahlen, dass sich dadurch keine nachteiligen optischen Effekte, wie Streulicht, das zu Blendung führen kann etc., ergeben.The wording "essentially the entire .... exiting light" means that the aim is to radiate at least the majority of the entire luminous flux exiting a micro entry optics solely into the associated micro exit optics. In particular, care must be taken to ensure that no luminous flux enters the adjacent micro exit optics in such a way that no adverse optical effects, such as scattered light, which can lead to glare, etc., result.
Außerdem ist unter Formulierung "wobei die Mikro-Eintrittsoptiken derart ausgebildet und/oder die Mikro-Eintrittsoptiken und die Mikro-Austrittsoptiken derart zueinander angeordnet sind" auch zu verstehen, dass zusätzliche Maßnahmen, wie etwa Blenden (siehe weiter unten) vorgesehen sein können, die entweder ausschließlich oder vorzugsweise zusätzlich zu ihrer eigentlichen Funktion noch die Funktion haben, dass der gesamte Lichtstrom genau auf die zugeordnete Mikro-Austritts-Optik gerichtet ist.In addition, the wording “wherein the micro entry optics are designed in such a way and/or the micro entry optics and the micro exit optics are arranged in such a way in relation to one another” also means that additional measures such as screens (see below) can be provided that either exclusively or preferably in addition to their actual function also have the function that the entire luminous flux is directed precisely onto the associated micro-exit optics.
Durch die Verwendung einer Anzahl, Mehrzahl bzw. Vielzahl von einer zugeordneten Mikro-Optiken anstelle einer einzigen Optik wie in herkömmlichen Projektionssystemen sind sowohl die Brennweiten als auch die Abmessungen der Mikro-Optiken an sich deutlich geringer als bei einer "herkömmlichen" Optik. Ebenso kann die Mittendicke gegenüber einer herkömmlichen Optik reduziert werden. Dadurch kann die Bautiefe der Projektionseinrichtung gegenüber einer herkömmlichen Optik deutlich verringert werden.Due to the use of a number, plurality or multiplicity of associated micro-optics instead of a single optic as in conventional projection systems, both the focal lengths and the dimensions of the micro-optics are significantly smaller than with "conventional" optics. The center thickness can also be reduced compared to conventional optics. As a result, the overall depth of the projection device can be significantly reduced compared to conventional optics.
Durch Erhöhung der Anzahl an Mikro-Optik-Systemen lässt sich einerseits der Lichtstrom erhöhen oder skalieren, wobei eine Grenze nach oben hinsichtlich der Anzahl der Mikro-Optik-Systeme in erster Linie durch die jeweils verfügbaren Herstellungsverfahren begrenzt ist. Für die Erzeugung einer Abblendlichtfunktion können z.B. 200 bis 400 Mikro-Optik-Systeme ausreichen bzw. günstig sein, wobei dies weder einen einschränkenden Wert nach oben oder unten sondern lediglich eine beispielhafte Anzahl beschreiben soll. Zur Erhöhung des Lichtstroms ist es günstig, die Anzahl gleichartiger Mikro-Optiken zu erhöhen. Umgekehrt kann man die Vielzahl an Mikro-Optiken dazu benutzen, um Mikro-Optiken unterschiedlichen optischen Verhaltens in ein Projektionssystem einzubringen, um unterschiedliche Lichtverteilungen zu erzeugen oder zu überlagern. Die Vielzahl von Mikro-Optiken erlaubt somit auch Gestaltungsmöglichkeiten, die bei einer herkömmlichen Optik nicht vorhanden sind.By increasing the number of micro-optical systems, on the one hand the luminous flux can be increased or scaled, with an upper limit with regard to the number of micro-optical systems being limited primarily by the manufacturing processes available in each case. For example, 200 to 400 micro-optical systems can be sufficient or favorable for generating a low beam function, although this is not intended to describe a limiting value, either upwards or downwards, but merely as an example number. In order to increase the luminous flux, it is beneficial to increase the number of similar micro-optics. Conversely, the large number of micro-optics can be used to introduce micro-optics with different optical behavior into a projection system in order to generate or superimpose different light distributions. The large number of micro-optics also allows design options that are not available with conventional optics.
Ein solches Lichtmodul ist außerdem skalierbar, d.h., es können mehrere baugleiche oder ähnlich aufgebaute Lichtmodule zu einem größeren Gesamtsystem, z.B. zu einem Fahrzeugscheinwerfer zusammengesetzt werden.Such a light module is also scalable, ie several light modules of the same or similar construction can be combined to form a larger overall system, eg a vehicle headlight.
Bei einem herkömmlichen Projektionssystem mit einer Projektionslinse weist die Linse typische Durchmesser zwischen 60 mm und 90 mm auf. Bei einem erfindungsgemäßen Modul weisen die einzelnen Mikro-Optik-Systeme typische Abmessungen von ca. 2 mm x 2 mm (in V und H) und eine Tiefe (in Z, siehe z.B.
Das erfindungsgemäße Lichtmodul bzw. die Projektionseinrichtung können eine geringe Bautiefe aufweisen und sind grundsätzlich frei formbar, d.h. es ist z.B. möglich ein erstes Lichtmodul zur Erzeugung einer ersten Teillichtverteilung getrennt von einem zweiten Lichtmodul für eine zweite Teillichtverteilung auszugestalten und diese relativ frei, d.h. vertikal und/oder horizontal und/oder in der Tiefe zueinander versetzt anzuordnen, sodass sich auch Designvorgaben einfacher realisieren lassen.The light module or the projection device according to the invention can have a small overall depth and can basically be freely shaped, i.e. it is possible, for example, to design a first light module for generating a first partial light distribution separately from a second light module for a second partial light distribution and this relatively freely, i.e. vertically and/or or to be arranged horizontally and/or offset in depth, so that design specifications can also be implemented more easily.
Ein weiterer Vorteil eines erfindungsgemäßen Lichtmoduls bzw. einer Projektionseinrichtung ist jener, dass das exakte Positionieren der Lichtquelle(n) in Bezug auf die Projektionseinrichtung entfällt. Eine exakte Positionierung ist insofern weniger kritisch, als die Entfernung der Beleuchtungseinheit zum Mikrolinsenarray nicht exakt sein muss. Nachdem nun aber die Mikro- Eintritts- und Mikro-Austritts-Optiken bereits optimal aufeinander abgestimmt sind, da diese quasi ein System bilden, fällt eine nicht exakte Positionierung der realen Lichtquelle(n) weniger ins Gewicht. Die realen Lichtquellen sind beispielsweise annähernd punktförmige Lichtquellen wie z.B. Leuchtdioden, deren Licht von Kollimatoren wie Compound Parabolic Concentrators (CPC) oder TIR-Linsen (Total Inner Reflection) parallel gerichtet wird.A further advantage of a light module or a projection device according to the invention is that the exact positioning of the light source(s) in relation to the projection device is no longer necessary. Exact positioning is less critical insofar as the distance between the illumination unit and the microlens array does not have to be exact. However, now that the micro-entry and micro-exit optics have already been optimally matched to one another, since they form a system, so to speak, inaccurate positioning of the real light source(s) is less important. The real light sources are, for example, almost punctiform light sources such as light-emitting diodes, whose light is collimated by collimators such as Compound Parabolic Concentrators (CPC) or TIR lenses (Total Inner Reflection).
Die Projektionseinrichtung bzw. das Lichtmodul kann ebenso zusätzliche Mikro-Optik-Systeme enthalten, mit Hilfe derer andere Typen von Lichtverteilungen als eine Abblendlichtverteilung erzeugt. Dabei wird unter "einem bestimmten Typ" der Lichtverteilung eine gemäß einschlägigen Normen erzeugte Lichtverteilung verstanden, beispielsweise eine Lichtverteilung nach Normen der UN/ECE Regelungen in den Staaten der Europäischen Union, insbesondere Regelungen 123 und 48, oder einschlägigen Normen in den anderen Ländern oder Regionen.The projection device or the light module can also contain additional micro-optical systems, with the help of which other types of light distributions than a low beam distribution are generated. "A specific type" of light distribution is understood to mean a light distribution generated in accordance with relevant standards, for example light distribution in accordance with the standards of the UN/ECE regulations in the states of the European Union, in particular regulations 123 and 48, or relevant standards in the other countries or regions .
Der Begriff "Fahrbahn" wird im Folgenden lediglich zur vereinfachten Darstellung verwendet, denn selbstverständlich hängt es von den örtlichen Gegebenheiten ab, ob sich das Lichtbild tatsächlich auf der Fahrbahn befindet oder auch darüber hinaus erstreckt. Z.B. um die abgestrahlten Lichtverteilungen zu testen, erzeugt man eine Projektion des Lichtbildes auf eine vertikale Fläche entsprechend der einschlägigen Normen, beispielsweise entsprechend der Regelungen Nummer 123 und 48 der Wirtschaftskommission für Europa der Vereinten Nationen (UN/ECE) "Einheitliche Bedingungen für die Genehmigung von adaptiven Frontbeleuchtungssystemen (AFS) für Kraftfahrzeuge" und "Einheitliche Bedingungen für die Genehmigung der Fahrzeuge hinsichtlich des Anbaus der Beleuchtungs- und Lichtsignaleinrichtungen", den für die Vereinigten Staaten von Amerika gültigen Federal Motor Vehicle Safety Standard FMVSS No. 108 "Lamps, reflective devices, and associated equipment", der im Code of Federal Regulations CFR unter dem Title 49: Transportation im Chapter V, Part 571-Federal Motor Vehicle Standards im Subpart B als §571.108 angegeben ist, sowie dem National Standard of the People's Republic of China GB/T 30036/2013 "Adaptive Front-Lighting System for Motor Vehicles", die sich auf die KFZ-Beleuchtungstechnik beziehen.The term "roadway" is only used below for simplified representation, because of course it depends on the local conditions whether the photograph is actually on the roadway or also extends beyond it. For example, in order to test the light distributions emitted, the light image is projected onto a vertical surface in accordance with the relevant standards, for example in accordance with regulations number 123 and 48 of the United Nations Economic Commission for Europe (UN/ECE) "Uniform conditions for the approval of adaptive front lighting systems (AFS) for motor vehicles" and "Uniform conditions for the approval of vehicles with regard to the installation of lighting and light signal devices", the Federal Motor Vehicle Safety Standard FMVSS No. 108 "Lamps, reflective devices, and associated equipment", which is specified in the Code of Federal Regulations CFR under Title 49: Transportation in Chapter V, Part 571-Federal Motor Vehicle Standards in Subpart B as §571.108, and the National Standard of the People's Republic of China GB/T 30036/2013 "Adaptive Front-Lighting System for Motor Vehicles" relating to automotive lighting technology.
Generell ist es auch möglich, dass die erste Gruppe Abschattungselemente aufweist. Der unabhängige Anspruch der vorliegenden Erfindung besagt nicht, dass die erste Gruppe frei von Abschattungselementen sein muss, sondern, dass die zweite Gruppe zumindest eine zweite Variante an Blendenvorrichtung aufweist, die sich von der ersten Variante unterscheidet, beispielsweise indem eine andere Art von Abschattungselementen vorgesehen ist. Natürlich kann die erste Gruppe allerdings ebenso frei von Abschattungselementen sein.In general, it is also possible for the first group to have shading elements. The independent claim of the present invention does not state that the first group must be free of shading elements, but rather that the second group has at least a second variant of the aperture device that differs from the first variant, for example by providing a different type of shading element . Of course, the first group can also be free of shading elements.
Insbesondere kann es günstig sein, wenn bei einer solchen Beleuchtungsvorrichtung zwei oder mehr Gruppen zur Erzeugung unterschiedlicher Lichtverteilung vorgesehen sind, wobei jede Gruppen eine unterschiedliche Lichtverteilung bildet, die beispielsweise aus einer der folgenden Lichtverteilungen gewählt ist:
- *) Abbiegelicht-Lichtverteilung;
- *) Stadtlicht-Lichtverteilung;
- *) Landstraßenlicht-Lichtverteilung;
- *) Autobahnlicht-Lichtverteilung;
- *) Lichtverteilung für Zusatzlicht für Autobahnlicht;
- *) Kurvenlicht-Lichtverteilung;
- *) Abblendlicht-Vorfeld-Lichtverteilung;
- *) Lichtverteilung für asymmetrisches Abblendlicht im Fernfeld;
- *) Lichtverteilung für asymmetrisches Abblendlicht im Fernfeld im Kurvenlichtmodus;
- *) Fernlicht-Lichtverteilung;
- *) Blendfreies Fernlicht-Lichtverteilung.
- *) cornering light distribution;
- *) Stadtlicht light distribution;
- *) Highway light distribution;
- *) Autobahn light distribution;
- *) Light distribution for additional light for motorway light;
- *) Cornering light distribution;
- *) Low beam apron light distribution;
- *) Light distribution for asymmetrical low beam in the far field;
- *) Light distribution for asymmetrical low beam in the far field in cornering light mode;
- *) high beam light distribution;
- *) Glare-free high beam light distribution.
Beispiele solcher Lichtverteilungen sind unter anderem dem Dokument
Vorzugsweise kann vorgesehen sein, dass jede Abblendlichtmikrooptik, die eine Blendenvorrichtung der zweiten Variante aufweist, genau ein entlang eines Abschnitts des Verlaufes der Blendenkante abstehendes Abschattungselement aufweist. Das Abschattungselement erstreckt sich dabei vorzugsweise in vertikaler Richtung, um den Punkt "50L" der Lichtverteilung abzuschatten. Es können natürlich auch weitere Abschattungselemente vorgesehen sein, die nicht von der Blendenkante abstehen. Eine entsprechend Abdunkelung des 50L-Punktes kann beispielsweise durch Wahl einer geeigneten Anzahl und Dimensionierung von Abblendlichtmikrooptiken mit Abschattungselementen gemäß der zweiten Variante geschaffen werden. Unter dem Ausdruck "Abstehen von der Blendenkante" wird dabei verstanden, dass die Blendenkante als Blendenkante für eine Abblendlichtverteilung als solche jedenfalls noch erkennbar ist. Die Längserstreckung der Blendenkante, die sich aus geradlinigen Blendenkantenabschnitten, die horizontal oder schräg geneigt sind, zusammensetzt, wird damit durch das abstehende Abschattungselement unterbrochen. Anders ausgedrückt, ist die Blendenkante im Bereich eines vollständig lichtundurchlässigen Abschattungselements nicht mehr erkennbar, da diese aufgrund des Vorhandenseins des abstehenden Abschattungselements in diesem Bereich nicht mehr als Kante sichtbar wird. Die Blendenkante setzt sich vor und nach dem Abschattungselement wieder (optisch sichtbar) fort.Provision can preferably be made for each low-beam micro-optics system that has a diaphragm device of the second variant to have exactly one shading element that protrudes along a section of the profile of the diaphragm edge. The shading element preferably extends in the vertical direction in order to shade the point "50L" of the light distribution. It is of course also possible to provide further shading elements which do not protrude from the edge of the screen. A corresponding darkening of the 50L point can be created, for example, by choosing a suitable number and dimensioning of low-beam micro-optics with shading elements according to the second variant. The expression "protruding from the aperture edge" is understood to mean that the aperture edge is still recognizable as such as an aperture edge for a low beam distribution. The longitudinal extent of the screen edge, which is composed of straight screen edge sections that are horizontally or inclined, is thus interrupted by the protruding shading element. In other words, the diaphragm edge is no longer recognizable in the area of a completely opaque shading element, since this is due to the presence of the protruding shading element in this area is no longer visible as an edge. The aperture edge continues (optically visible) before and after the shading element.
Vorteilhafterweise kann vorgesehen sein, dass jede Abblendlichtmikrooptik, die eine Blendenvorrichtung der zweiten Variante aufweist, genau ein von der Blendenkante beabstandetes Abschattungselement, das von einem lichtdurchlässigen Bereich der Blendenvorrichtung vollständig umschlossen ist, aufweist. Diese Abschattungselemente können dergestalt angeordnet sein, dass sie eine Abschattung innerhalb des Segments 10 einer Abblendlichtverteilung bewirken. Eine entsprechend homogene und gleichmäßige Abdunkelung innerhalb des Segments 10 kann beispielsweise durch Wahl einer geeigneten Anzahl und Dimensionierung von Abblendmikrooptiken mit diesen Abschattungselementen geschaffen werden.Advantageously, it can be provided that each low-beam micro-optics, which has a diaphragm device of the second variant, has exactly one shading element that is spaced apart from the diaphragm edge and is completely surrounded by a light-transmitting area of the diaphragm device. These shading elements can be arranged in such a way that they cause shading within
Günstigerweise kann vorgesehen sein, dass die zumindest eine Blendenvorrichtung mit einem lichtdurchlässigen Träger verbunden ist, der an seiner Oberfläche zur Formung einer vorgebbaren Lichtverteilung mit einem zumindest teilweise lichtundurchlässigen Material beschichtet ist. Die zumindest teilweise lichtundurchlässige Schicht kann z.B. mittels eines lithografischen Verfahrens aufgebracht werden. Auch könnte unter Umständen auf der anderen Seite des Trägers eine weitere Blendenvorrichtung, z.B. zur Vermeidung von Streulicht, vorgesehen sein.Conveniently, it can be provided that the at least one diaphragm device is connected to a light-transmissive carrier, which is coated on its surface with an at least partially opaque material to form a predeterminable light distribution. The at least partially opaque layer can be applied, for example, by means of a lithographic process. Under certain circumstances, a further screen device could also be provided on the other side of the carrier, e.g. to avoid scattered light.
Zur besonders effizienten und exakten Vorgabe des Überganges zwischen einem abgedunkelten Bereich und einem nichtabgedunkelten Bereich kann vorgesehen sein, dass zumindest einzelne Abschattungselemente der Blendenvorrichtung der zweiten Variante teilweise lichtdurchlässig sind. Auch kann die Lichtdurchlässigkeit einzelner Abschattungselemente variieren.For a particularly efficient and precise specification of the transition between a darkened area and a non-darkened area, it can be provided that at least individual shading elements of the screen device of the second variant are partially translucent. The light transmission of individual shading elements can also vary.
Alternativ oder ergänzend dazu kann ebenso vorgesehen sein, dass zumindest einzelne Abschattungselemente der Blendenvorrichtung der zweiten Variante vollständig lichtundurchlässig sind. Die Ausgestaltung der Gesamtabschattung kann durch geeignete Auswahl der Anzahl sowie der Ausgestaltung der Abschattungselemente variiert werden.Alternatively or additionally, it can also be provided that at least individual shading elements of the screen device of the second variant are completely opaque. The design of the overall shading can be varied by suitably selecting the number and design of the shading elements.
Zudem kann vorgesehen sein, dass einzelne Abschattungselemente der Blendenvorrichtung der zweiten Variante zur Begrenzung der Leuchtstärke der Lichtverteilung in einem 50L-Messpunkt vorgesehen sind. Der 50L-Messpunkt liegt beispielsweise in einem Winkel 3,43* nach links (L) und 0,86° nach unten (D). In der Vorschrift FMVSS liegt ein Messpunkt ohne spezielle Bezeichnung bei 0,86D 3,5L.In addition, it can be provided that individual shading elements of the screen device of the second variant to limit the luminosity of the light distribution in a 50L measuring point are provided. For example, the 50L measurement point is at an angle 3.43* to the left (L) and 0.86° down (D). In the FMVSS regulation, a measuring point without a special designation is at 0.86D 3.5L.
Vorzugsweise kann vorgesehen sein, dass die einzelne Abschattungselemente dergestalt angeordnet sind, dass sie einen Bereich der durch die jeweilige Abblendlichtmikrooptik abgestrahlten Lichtverteilung abschatten, wobei der Bereich einen horizontalen Winkel von maximal 5° und einen vertikalen Winkel von maximal 5° umfasst. Der abgeschattete Bereich könnte einen horizontalen und vertikalen Winkel von (1° oder 2°) bis 5° umfassen und könnte beispielsweise kreisförmig ausgebildet sein.Provision can preferably be made for the individual shading elements to be arranged in such a way that they shade a region of the light distribution emitted by the respective low beam micro-optics, with the region encompassing a maximum horizontal angle of 5° and a maximum vertical angle of 5°. The shaded area could include a horizontal and vertical angle of (1° or 2°) to 5° and could be circular, for example.
Zudem kann vorgesehen sein, dass die Größe zumindest eines Abschattungselements einer Blendenvorrichtung der zweiten Variante von der Größe zumindest eines Abschattungselements einer weiteren Blendenvorrichtung der zweiten Variant abweicht. Unter dem Ausdruck "Größe" wird dabei der Fläche verstanden, über die sich das jeweilige Abschattungselement erstreckt. Dabei kann entweder die Form skaliert werden. Alternativ dazu ist es auch möglich, dass die Formen der Abschattungselemente voneinander abweichen, d.h. unterschiedliche geometrische Figuren darstellen.In addition, it can be provided that the size of at least one shading element of a screen device of the second variant differs from the size of at least one shading element of a further screen device of the second variant. The expression "size" is understood to mean the area over which the respective shading element extends. Either the shape can be scaled. As an alternative to this, it is also possible for the shapes of the shading elements to differ from one another, i.e. to represent different geometric figures.
Zudem kann vorgesehen sein, dass einzelne Abschattungselemente der Blendenvorrichtung der zweiten Variante zur Begrenzung der Leuchtstärke der Lichtverteilung im Segment 10 der Abblendlichtverteilung vorgesehen sind. Unter dem Ausdruck "Segment 10" wird eine Linie auf Höhe -4° (-4D) zwischen 4,5°L und 2R° verstanden.In addition, it can be provided that individual shading elements of the aperture device of the second variant are provided to limit the luminosity of the light distribution in
Vorzugsweise kann vorgesehen sein, dass einzelne Abschattungselemente dergestalt angeordnet sind, dass sie einen Bereich der durch die jeweilige Abblendlichtmikrooptik abgestrahlten Lichtverteilung abschatten, wobei der Bereich einen horizontalen Winkel von maximal 10° und einen vertikalen Winkel von maximal 3° umfasst. Die Breite kann daher beispielsweise maximal 10° und die Höhe beispielsweise zwischen 1° und 3° betragen. Dieses Abschattungselement kann damit als schwebender Balken ausgebildet sein, wobei die Dimensionen der einzelnen Abschattungselemente zur Erzeugung eines homogenen Überganges variieren können. In diesem Zusammenhang ist die Herstellung dieser Abschattungselemente mittels lithografischen Prozessen besonders vorteilhaft. Insbesondere kann vorgesehen sein, dass der Träger der zumindest einen Blendenvorrichtung aus Glas besteht. Zudem kann vorgesehen sein, dass die Eintrittsoptik als auch die Austrittsoptik mit zumindest einem zwischen der Eintrittsoptik und der Austrittsoptik angeordneten Träger der Blendenvorrichtung fest verbunden sind. Dadurch können unerwünschte Einflüsse - z.B. aufgrund von Wärmedehnung, minimiert werden, und eine dauerhafte und exakte Positionierung der Eintrittsoptik in Bezug auf die Auftrittsoptik bzw. umgekehrt sichergestellt werden. Hierzu kann vorteilhafterweise vorgesehen sein, dass die feste Verbindung der Eintrittsoptik und der Austrittsoptik mit dem zumindest einen Träger jeweils als transparente Klebeverbindung ausgebildet ist.Provision can preferably be made for individual shading elements to be arranged in such a way that they shade a region of the light distribution emitted by the respective low beam micro-optics, with the region encompassing a maximum horizontal angle of 10° and a maximum vertical angle of 3°. The width can therefore be a maximum of 10°, for example, and the height can be between 1° and 3°, for example. This shading element can thus be in the form of a floating bar, with the dimensions of the individual shading elements being able to vary in order to produce a homogeneous transition. In this context, the production of these shading elements using lithographic processes is particularly advantageous. In particular, it can be provided that the carrier of the at least one screen device consists of glass. In addition, it can be provided that the entry optics and the exit optics are firmly connected to at least one carrier of the diaphragm device arranged between the entry optics and the exit optics. In this way, undesired influences, eg due to thermal expansion, can be minimized and permanent and precise positioning of the entrance optics in relation to the entrance optics and vice versa can be ensured. For this purpose, it can advantageously be provided that the fixed connection of the entrance optics and the exit optics with the at least one carrier is in each case designed as a transparent adhesive connection.
Des Weiteren kann vorgesehen sein, dass die Gesamtanzahl der Abblendlichtmikrooptiken eine dritte Gruppe an Abblendlichtmikrooptiken mit Blendenvorrichtungen einer dritten Variante umfasst, indem bei der Blendenvorrichtung der dritten Variante
* innerhalb eines bis zur Blendenkante ausgebildeten lichtabschattenden Bereiches der Blendenvorrichtung zumindest ein zumindest teilweise lichtdurchlässiges Fenster zur Ausbildung einer oberhalb der Helldunkel-Grenze liegenden Lichtverteilung ausgebildet ist. Dieser oberhalb der Helldunkel-Grenze liegende Bereich wird somit beleuchtet, sodass beispielsweise Verkehrsschilder besser erkennbar sind. Diese Lichtfunktion wird häufig als "Sign-light" bezeichnet, wobei die Intensität der Beleuchtung in diesem Bereich durch die Ausgestaltung des lichtdurchlässigen Fensters sowie durch die Anzahl der Abblendlichtmikrooptiken der dritten Variante festgelegt werden kann. Übrigens ist ebenso eine Kombination der Abblendlichtmikrooptiken der dritten Variante mit jener der ersten oder zweiten Variante möglich.Furthermore, it can be provided that the total number of low-beam micro-optics includes a third group of low-beam micro-optics with aperture devices of a third variant by the aperture device of the third variant
* Within a light-shading area of the panel device that extends up to the panel edge, at least one at least partially translucent window is formed for the formation of a light distribution above the light-dark boundary. This area above the light-dark boundary is thus illuminated so that traffic signs, for example, can be seen more easily. This light function is often referred to as "sign light", the intensity of the illumination in this area being able to be determined by the design of the translucent window and by the number of low-beam micro-optics of the third variant. Incidentally, a combination of the low beam micro-optics of the third variant with those of the first or second variant is also possible.
Generell können sämtliche Ausführungsformen der vorliegenden Erfindung auch im Zusammenhang mit der Erzeugung Vorfeldlichtverteilungen vorgesehen sein.In general, all embodiments of the present invention can also be provided in connection with the generation of front-end light distributions.
Ganz allgemein kann vorgesehen sein, dass unterschiedliche Abblendlichtmikrooptiken (z.B. zumindest zwei) unterschiedlich ausgebildete Blendenvorrichtungen bzw. (z.B. zumindest zwei) Abschattungselemente unterschiedlicher Größe aufweisen, wobei der durch die Abschattungselemente abgeschattete photometrischen Bereich zumindest teilweise überlappt. Dies kann auf die Abschattungselemente der ersten, der zweiten und/oder der dritten Variante bzw. Gruppe zutreffen. Insbesondere kann vorgesehen sein, dass der abgeschattete photometrische Bereich des kleineren Abschattungselements vollständig in dem abgeschatteten photometrischen Bereich des nächstgrößeren Abschattungselements aufgenommen ist bzw. können die Abschattungselemente dergestalt ausgebildet sein, dass dieser Effekt eintritt.In general, it can be provided that different low-beam micro-optics have (eg at least two) differently designed aperture devices or (eg at least two) shading elements of different sizes, with the photometric area shaded by the shading elements at least partially overlapping. This can apply to the shading elements of the first, the second and/or the third variant or group. In particular, it can be provided that the shaded photometric area of the smaller shading element is completely included in the shaded photometric area of the next larger shading element or the shading elements can be designed in such a way that this effect occurs.
Die Erfindung betrifft des Weiteren ein Mikroprojektions-Lichtmodul für einen Kraftfahrzeugscheinwerfer, umfassend zumindest eine erfindungsgemäße Projektionseinrichtung sowie zumindest eine Lichtquelle zur Einspeisung von Licht in die Projektionseinrichtung. Vorzugsweise ist jeder Abblendlichtmikrooptik eine LED-Lichtquelle zugeordnet.The invention also relates to a micro-projection light module for a motor vehicle headlight, comprising at least one projection device according to the invention and at least one light source for feeding light into the projection device. An LED light source is preferably assigned to each low-beam micro-optic.
Des Weiteren betrifft die Erfindung einen Fahrzeugscheinwerfer, insbesondere Kraftfahrzeugscheinwerfer, umfassend zumindest ein erfindungsgemäßes Mikroprojektions-Lichtmodul.Furthermore, the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising at least one micro-projection light module according to the invention.
Zudem betrifft die Erfindung ein Fahrzeug, insbesondere Kraftfahrzeug, mit zumindest einem erfindungsgemäßen Fahrzeugscheinwerfer.In addition, the invention relates to a vehicle, in particular a motor vehicle, with at least one vehicle headlight according to the invention.
Die Erfindung ist im Folgenden anhand beispielhafter und nicht einschränkender Ausführungsformen näher erläutert, die in den Figuren veranschaulicht sind. Darin zeigt
-
eine beispielhafte Abbildung einer Abblendlichtverteilung gemäß dem Stand der Technik,Figur 1 -
eine schematische Darstellung einer beispielhaften Projektionseinrichtung,Figur 2 -
eine schematische Darstellung eines Verfahrens zur Aufbringen der Blendenvorrichtung auf einen mit der Mikro-Eintrittsoptik und Mikro-Austrittsoptik verbindbaren transparenten Träger,Figuren 3a bis d -
eine beispielhafte Ausgestaltung nebeneinander liegender Blendenvorrichtungen gemäß dem Stand der Technik,Figur 4a -
Figur 4b eine mittels der Vorrichtung gemäßFigur 4a erzeugte Lichtverteilung, -
eine schematische Darstellung einer erfindungsgemäßen Ausgestaltung nebeneinander liegender Blendenvorrichtung gemäß einer ersten und einer zweiten Variante,Figur 5a -
Figur 5b eine mittels einer Projektionsvorrichtung umfassend dieBlendenvorrichtungen gemäß Figur 5a erzeugte Lichtverteilung, -
Figur 6a eine weitere schematische Darstellung einer erfindungsgemäßen Ausgestaltung nebeneinander liegender Blendenvorrichtung gemäß einer ersten und einer zweiten Variante, und -
Figur 6b eine mittels einer Projektionsvorrichtung umfassend die Blendenvorrichtungen gemäßFigur 6a erzeugte Lichtverteilung.
-
figure 1 an exemplary image of a low beam distribution according to the prior art, -
figure 2 a schematic representation of an exemplary projection device, -
Figures 3a to d a schematic representation of a method for applying the diaphragm device to a transparent carrier that can be connected to the micro entry optics and micro exit optics, -
Figure 4a an exemplary configuration of adjacent diaphragm devices according to the prior art, -
Figure 4b one by means of the device according toFigure 4a generated light distribution, -
Figure 5a a schematic representation of an embodiment according to the invention of juxtaposed diaphragm devices according to a first and a second variant, -
Figure 5b one by means of a projection device comprising the aperture devices according toFigure 5a generated light distribution, -
Figure 6a a further schematic representation of an embodiment according to the invention of screen devices lying next to one another according to a first and a second variant, and -
Figure 6b one by means of a projection device comprising the aperture devices according toFigure 6a generated light distribution.
In den folgenden Figuren bezeichnen - sofern nicht anders angegeben - gleiche Bezugszeichen gleiche Merkmale.Unless otherwise stated, the same reference symbols denote the same features in the following figures.
Die Mikro-Eintrittsoptiken 3a sind derart ausgebildet und/oder die Mikro-Eintrittsoptiken 3a und die Mikro-Austrittsoptiken 4a derart zueinander angeordnet sind, dass im Wesentlichen das gesamte aus einer Mikro-Eintrittsoptik 3a austretende Licht nur in die zugeordnete Mikro-Austrittsoptik 4a eintritt, und wobei das von den Mikro-Eintrittsoptiken 3a vorgeformte Licht von den Mikro-Austrittsoptiken 4a in einen Bereich vor dem Kraftfahrzeug als zumindest eine Lichtverteilung abgebildet wird. Jede Mikro-Eintrittsoptik 3a ist dergestalt ausgebildet, dass die Mikro-Eintrittsoptik 3a das durch sie durchtretende Licht in zumindest einen Mikro-Eintrittsoptik-Brennpunkt fokussiert, wobei der Mikro-Eintrittsoptik-Brennpunkt zwischen der Mikro-Eintrittsoptik 3a und der zugeordneten Mikro-Austrittsoptik 4a liegt, wobei zwischen der Mikro-Eintrittsoptik 3a und der Mikro-Austrittsoptik 4a zumindest eine Blendenvorrichtung 8a (siehe
Die zumindest eine Blendenvorrichtung 8a ist dergestalt zur Begrenzung der durch die jeweilige Mikro-Austrittsoptik 4a abgebildeten Lichtverteilung eingerichtet, dass die durch die Mikro-Austrittsoptik 4a abgestrahlte Lichtverteilung einen Anteil an der Abblendlichtverteilung ausbildet, wobei die Blendenvorrichtung 8a hierfür zumindest eine den Verlauf einer Hell-Dunkel-Grenze der Abblendlichtverteilung abbildende optisch wirksame Blendenkante K (siehe
Die Gesamtanzahl der Abblendlichtmikrooptiken umfasst zumindest zwei Gruppen an Abblendlichtmikrooptiken, nämlich
- eine erste Gruppe an Abblendlichtmikrooptiken mit zumindest einer ersten Variante an
Blendenvorrichtungen 8a' (siehe 4a), sowie - eine zweite Gruppe an Abblendlichtmikrooptiken mit zumindest einer zweiten Variante an
Blendenvorrichtungen 8a" (sieheFig. 6a ), wobei die Ausgestaltung der zweiten Variante anBlendenvorrichtungen 8a" zumindest darin von der Ausgestaltung der ersten Variante anBlendenvorrichtungen 8a' abweicht, indem die zweite Variante anBlendenvorrichtungen 8a"- * entlang eines Abschnitts des Verlaufes der Blendenkante abstehende Abschattungselemente A50L (siehe
Fig. 5a , übrigens kann auch die Abschattung des Segments A50L zumindest teilweise durch schwebende Abschattungselemente vorgesehen sein) und/oder - * von der Blendenkante K beabstandete Abschattungselemente ASegm10 (siehe
Fig. 6a ), die von einem lichtdurchlässigen Bereich der Blendenvorrichtung 8a" vollständig umschlossen sind, aufweist.
- * entlang eines Abschnitts des Verlaufes der Blendenkante abstehende Abschattungselemente A50L (siehe
- a first group of low-beam micro-optics with at least a first variant of
aperture devices 8a '(see 4a), and - a second group of low-beam micro-optics with at least a second variant of
aperture devices 8a" (seeFigure 6a ), wherein the configuration of the second variant ofdiaphragm devices 8a" differs at least in this respect from the configuration of the first variant ofdiaphragm devices 8a' in that the second variant ofdiaphragm devices 8a"- * Protruding shading elements A50L along a section of the course of the panel edge (see
Figure 5a , Incidentally, the shading of segment A50L can also be provided at least partially by floating shading elements) and/or - * shading elements ASegm10 spaced from the screen edge K (see
Figure 6a ), which are completely enclosed by a transparent area of thediaphragm device 8a".
- * Protruding shading elements A50L along a section of the course of the panel edge (see
Die
Größe als auch die geometrische Form der Abschattungselemente in Abhängigkeit von der gewünschten Ausgestaltung der zu erzeugenden Lichtverteilung gewählt werden kann.
In Anbetracht dieser Lehre ist der Fachmann in der Lage, ohne erfinderisches Zutun zu anderen, nicht gezeigten Ausführungsformen der Erfindung zu gelangen. Die Erfindung ist daher nicht auf die gezeigten Ausführungsformen beschränkt. Auch können einzelne Aspekte der Erfindung bzw. der Ausführungsformen aufgegriffen und miteinander kombiniert werden.In light of this teaching, those skilled in the art are able to arrive at other embodiments of the invention, not shown, without the use of the inventive faculty. The invention is therefore not limited to the embodiments shown. Individual aspects of the invention or the embodiments can also be taken up and combined with one another.
Claims (15)
- Projection device (1) for a motor vehicle headlamp, the projection device (1) being set up for imaging light from at least one light source (2) associated with the projection device (1) in a region in front of a motor vehicle in the form of at least one light distribution, namely a dipped beam distribution, the projection device (1) comprising:- an entry optics (3), which has a total number of micro-entry optics (3a), which are preferably arranged in an array,- an exit optics (4) having a total number of micro-exit optics (4a) preferably arranged in an array, whereineach micro-entry optics (3a) is associated with exactly one micro-exit optics (4a),wherein the micro-entry optics (3a) are configured and/or the micro-entry optics (3a) and the micro-exit optics (4a) are arranged relative to one another in such a way that substantially all of the light emerging from a micro-entry optic (3a) enters only the associated micro-exit optic (4a), and whereinthe light preformed by the micro-entry optics (3a) is imaged by the micro-exit optics (4a) into an area in front of the motor vehicle as at least one light distribution,wherein each micro-entry optic (3a) focuses the light passing through it into at least one micro-entry optic focal point, wherein the micro-entry optic focal point lies between the micro-entry optic (3a) and the associated micro-emission optic (4a), wherein at least one diaphragm device (8a', 8a") is arranged between the micro-entry optic (3a) and the micro-emission optic (4a),wherein a low beam micro-optics is formed in each case at least by the micro-entry optics (3a), the associated micro-exit optics (4a) and the at least one diaphragm device (8a', 8a") located therebetween,the at least one diaphragm device (8a', 8a") being set up for limiting the light distribution imaged by the respective micro-outlet optics (4a) in such a way that the light distribution emitted by the micro-outlet optics (4a) forms a component of the dipped beam light distribution, the diaphragm device (8a', 8a") having for this purpose at least one optically effective diaphragm edge (K) mapping the course of a light/dark boundary of the dipped beam light distributionwherein the total number of dipped beam micro-optics comprises at least two groups of dipped beam micro-optics, namely- a first group of low beam micro-optics comprising at least a first variant of aperture devices (8a'), and- a second group of low-light microoptics having at least one second variant of diaphragm devices (8a"), characterized in that
the design of the second variant of diaphragm devices (8a") differs from the design of the first variant of diaphragm devices (8a') at least in that the second variant of diaphragm devices (8a")* has shading elements (A50L) projecting along a section of the course of the shading edge (K), the shading edge (K) continuing again in an optically visible manner before and after the shading element (A50L), and/or* has shading elements (ASegm 10) which are spaced apart from the shading edge (K) and are completely enclosed by a light-transmitting region of the shading device (8a"). - Projection device (1) according to claim 1, wherein each low-light micro-optics comprising a diaphragm device (8a") of the second variant comprises exactly one shading element (A50L) projecting along a portion of the course of the diaphragm edge (K).
- Projection device (1) according to claim 1 or 2, wherein each low-light micro-optics comprising a diaphragm device (8a") of the second variant comprises exactly one shading element (ASegm10) spaced from the diaphragm edge (K) and completely enclosed by a light-transmitting region of the diaphragm device (8a").
- Projection device (1) according to one of the preceding claims, wherein the at least one diaphragm device (8a', 8a") is connected to a light-transmitting support (5) which is coated on its surface with an at least partially light-impermeable material for shaping a predeterminable light distribution.
- Projection device (1) according to one of the preceding claims, wherein at least individual shading elements (A50L, ASegm10) of the shading device (8a") of the second variant are partially light-transmissive.
- Projection device (1) according to one of the preceding claims, wherein at least individual shading elements (A50L, ASegm10) of the shading device (8a") of the second variant are completely opaque.
- Projection device (1) according to one of the preceding claims, wherein individual shading elements (A50L) of the shading device (8a") of the second variant are provided for limiting the luminous intensity of the light distribution in a 50L measuring point.
- Projection device (1) according to claim 7, wherein the individual shading elements (A50L) are arranged in such a way that they shade a range of the light distribution emitted by the respective low beam micro-optics, the range comprising a horizontal angle of at most 5° and a vertical angle of at most 5°.
- Projection device (1) according to one of the preceding claims, wherein the size of at least one shading element (A50L, ASegm10) of a shading device (8a") of the second variant differs from the size of at least one shading element (A50L, ASegm10) of a further shading device (8a") of the second variant.
- Projection device (1) according to one of the preceding claims, wherein individual shading elements (A50L, ASegm10) of the shading device (8a") of the second variant are provided for limiting the luminous intensity of the light distribution in segment 10 of the low beam distribution.
- Projection device (1) according to claim 10, wherein the individual shading elements (A50L, ASegm10) are arranged in such a way that they shade a region of the light distribution emitted by the respective low beam micro-optics, the region comprising a horizontal angle of at most 10° and a vertical angle of at most 3°.
- Projection device (1) according to one of the preceding claims, wherein the support (5) of the at least one diaphragm device (8a', 8a") consists of glass, wherein preferably the entrance optics (3) as well as the exit optics (4) are fixedly connected to at least one support (5) of the diaphragm device (8a', 8a") arranged between the entrance optics (3) and the exit optics (4), wherein the fixed connection of the entrance optics (3) and the exit optics (4) to the at least one carrier (5) is preferably formed in each case as a transparent adhesive connection.
- Projection device (1) according to one of the preceding claims, wherein the total number of low beam micro-optics comprises a third group of low beam micro-optics with aperture devices of a third variant, in that, in the aperture device of the third variant.
* at least one at least partially light-transmitting window is formed within a light-shading region of the diaphragm device formed up to the diaphragm edge (K) in order to form a light distribution lying above the light/dark boundary. - Microprojection light module (6) for a motor vehicle headlamp, comprising at least one projection device (1) according to one of the preceding claims and at least one light source (2) for feeding light into the projection device (1).
- Vehicle headlamp, in particular motor vehicle headlamp, comprising at least one projection device according to any one of claims 1 to 13 and/or at least one microprojection light module (6) according to claim 14.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17205400.9A EP3495718A1 (en) | 2017-12-05 | 2017-12-05 | Projection device for a motor vehicle headlight |
PCT/EP2018/082657 WO2019110369A1 (en) | 2017-12-05 | 2018-11-27 | Projection device for a motor vehicle headlight |
Publications (2)
Publication Number | Publication Date |
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EP3721134A1 EP3721134A1 (en) | 2020-10-14 |
EP3721134B1 true EP3721134B1 (en) | 2023-02-15 |
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Application Number | Title | Priority Date | Filing Date |
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EP17205400.9A Withdrawn EP3495718A1 (en) | 2017-12-05 | 2017-12-05 | Projection device for a motor vehicle headlight |
EP18811492.0A Active EP3721134B1 (en) | 2017-12-05 | 2018-11-27 | Projection device for a motor vehicle headlight |
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EP17205400.9A Withdrawn EP3495718A1 (en) | 2017-12-05 | 2017-12-05 | Projection device for a motor vehicle headlight |
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US (1) | US20200370726A1 (en) |
EP (2) | EP3495718A1 (en) |
JP (1) | JP6964777B2 (en) |
KR (1) | KR102410894B1 (en) |
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KR102348900B1 (en) * | 2020-06-29 | 2022-01-11 | 에스엘 주식회사 | Lamp for vehicle |
KR20220021309A (en) * | 2020-08-13 | 2022-02-22 | 현대모비스 주식회사 | Lamp for automobile and automobile including the same |
CN116697296B (en) * | 2023-08-03 | 2023-10-13 | 常州星宇车灯股份有限公司 | light source coupling structure |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH046084Y2 (en) * | 1987-03-31 | 1992-02-20 | ||
CA2562438A1 (en) * | 2004-04-08 | 2005-10-27 | Federal-Mogul Corporation | Projector lamp headlight with chromatic aberration correction |
EP2157362A1 (en) * | 2008-08-11 | 2010-02-24 | Hella KG Hueck & Co. | Projection headlight assembly for vehicles |
JP5423159B2 (en) * | 2009-06-04 | 2014-02-19 | スタンレー電気株式会社 | Vehicle lighting |
AT509821B1 (en) * | 2010-04-22 | 2013-08-15 | Zizala Lichtsysteme Gmbh | HEADLIGHTS FOR VEHICLES |
KR101195110B1 (en) * | 2010-11-11 | 2012-10-29 | 지엠 글로벌 테크놀러지 오퍼레이션스 엘엘씨 | Head lamp assembly and method for controlling the same |
DE102013206488A1 (en) * | 2013-04-11 | 2014-10-30 | Automotive Lighting Reutlingen Gmbh | Light module for a motor vehicle lighting device |
DE102013207850A1 (en) * | 2013-04-29 | 2014-10-30 | Automotive Lighting Reutlingen Gmbh | Light module for a motor vehicle headlight |
AT514967B1 (en) * | 2013-10-25 | 2015-08-15 | Zizala Lichtsysteme Gmbh | Microprojection light module for a motor vehicle headlight |
KR102310285B1 (en) * | 2014-10-30 | 2021-10-07 | 현대모비스 주식회사 | Lamp Apparatus Of Vehicle |
AT516836B1 (en) * | 2015-04-10 | 2016-09-15 | Zizala Lichtsysteme Gmbh | Lighting device with beam diaphragm and motor vehicle headlights |
DE102016204344A1 (en) * | 2016-03-16 | 2017-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Headlight for a motor vehicle |
DE102016112617B3 (en) * | 2016-07-08 | 2017-10-26 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a small overall depth |
-
2017
- 2017-12-05 EP EP17205400.9A patent/EP3495718A1/en not_active Withdrawn
-
2018
- 2018-11-27 EP EP18811492.0A patent/EP3721134B1/en active Active
- 2018-11-27 CN CN201880078628.XA patent/CN111492173B/en active Active
- 2018-11-27 KR KR1020207019121A patent/KR102410894B1/en active IP Right Grant
- 2018-11-27 US US16/769,696 patent/US20200370726A1/en not_active Abandoned
- 2018-11-27 JP JP2020530495A patent/JP6964777B2/en active Active
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US20200370726A1 (en) | 2020-11-26 |
WO2019110369A1 (en) | 2019-06-13 |
KR20200087867A (en) | 2020-07-21 |
EP3495718A1 (en) | 2019-06-12 |
JP2021506068A (en) | 2021-02-18 |
EP3721134A1 (en) | 2020-10-14 |
CN111492173B (en) | 2022-09-13 |
CN111492173A (en) | 2020-08-04 |
JP6964777B2 (en) | 2021-11-10 |
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