EP3572719A1 - Module d'éclairage pour un phare de véhicule automobile - Google Patents

Module d'éclairage pour un phare de véhicule automobile Download PDF

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Publication number
EP3572719A1
EP3572719A1 EP18174282.6A EP18174282A EP3572719A1 EP 3572719 A1 EP3572719 A1 EP 3572719A1 EP 18174282 A EP18174282 A EP 18174282A EP 3572719 A1 EP3572719 A1 EP 3572719A1
Authority
EP
European Patent Office
Prior art keywords
light
light source
optics
additional
micro
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.)
Withdrawn
Application number
EP18174282.6A
Other languages
German (de)
English (en)
Inventor
Matthias Kemetmüller
Bernhard Mandl
Andreas Moser
Friedrich Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZKW Group GmbH filed Critical ZKW Group GmbH
Priority to EP18174282.6A priority Critical patent/EP3572719A1/fr
Priority to JP2020562752A priority patent/JP7004849B2/ja
Priority to EP19724192.0A priority patent/EP3803196B1/fr
Priority to PCT/EP2019/062255 priority patent/WO2019224041A1/fr
Priority to US17/048,004 priority patent/US11193643B2/en
Priority to CN201980035071.6A priority patent/CN112154288B/zh
Priority to KR1020207021084A priority patent/KR102410899B1/ko
Publication of EP3572719A1 publication Critical patent/EP3572719A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment 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
    • 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 relates to a light module for a motor vehicle headlight for (preferably simultaneously) realizing at least one main and at least one secondary light function comprising at least one light source and at least one projection device, wherein the projection device has an entry optics and an exit optics, wherein the entry optics is set up Intermediate image from the at least one light source radiated light in a lying between the entrance optics and the exit optics, substantially transverse to an optical axis of the projection device intermediate image plane to form, and the exit optics is arranged, the intermediate image in the form of a light distribution of a first predetermined type in to map an area in front of the light module.
  • the invention relates to a motor vehicle headlight with at least one such light module.
  • WO 2015/058227 A1 shows a microprojection light module for a motor vehicle headlamp comprising at least one light source and at least one projection device which images the light emerging from the at least one light source in an area in front of the motor vehicle in the form of at least one light distribution
  • the projection device comprises: an entrance optics, which consists of an array of micro-entry optics; an exit optics, which consists of an array of micro-exit optics, each micro-entry optics is associated with exactly one micro-exit optics, wherein the micro-entry optics are formed and / or the micro-entry optics and the micro-exit optics are arranged to each other, that the light emerging from a micro-entry optics enters exactly into the associated micro-exit optics, and wherein the light preformed by the micro-entry optics is imaged by the micro exit optics in an area in front of the motor vehicle as at least one light distribution
  • a microprojection light module for a vehicle headlight thematized which comprises at least one light source and at least one projection device, which the light emerging from the at least one light source in an area in front of the motor vehicle in the form of at least one light distribution
  • the projection device has an entrance optics, which has one, two or more micro-entry optics, which are preferably arranged in an array, and an exit optics comprising one, two or more micro-exit optics, which are preferably arranged in an array, each micro-entry optics being associated with exactly one micro-exit optic, the micro-entry optics being formed and / or the micro-entry optics and the micro Egress optics are arranged to each other such that substantially all of the light emerging from a micro-entry optic light enters exactly only in the associated micro-exit optics, and wherein the preformed by the micro-entry optics light from the micro-exit optics in an area in front of the motor vehicle
  • a microprojection light module for a motor vehicle headlamp comprising at least one light source and at least one projection device which images the light emerging from the at least one light source in an area in front of the motor vehicle in the form of at least one light distribution
  • the projection device comprises an entrance optics, which one, two or more micro-entrance optics, which are preferably arranged in an array, an exit optics having one, two or more micro-exit optics, which are preferably arranged in an array, each micro-entry optics exactly one micro-exit optics is assigned, wherein the micro-entrance optics formed in such a way and / or the micro-entry optics and the micro-exit optics are arranged to each other such that substantially all of the light emerging from a micro-entry optics light only in the associated micro-exit optics wherein the light preformed by the micro-entry optics is imaged by the micro-exit optics in an area in front of the motor
  • a disadvantage of the above-mentioned light modules is that only a very limited number of light distributions can be generated with a single light module, and consequently light functions can be realized (low efficiency).
  • a secondary light function such as direction indicator (static or dynamic, for example as running light), position light and / or daytime running lights (static or as running light), etc.
  • a main light function such as low beam, high beam, light functions of an adaptive front light system (light functions of an AFS headlamp ) to realize.
  • the object of the present invention is to improve the conventional light modules to the effect, or to expand their structure so that from the light exit surface of the same light module several light functions, preferably can be generated simultaneously.
  • the object is achieved with a light module of the type mentioned above in that at least one additional light source - so-called additional light source - is provided, which is arranged at least one additional light source to emit light between the entrance optics and the exit optics (in this area there the at least one additional light source emits light); the exit optics is set up to image the light emitted by the at least one additional light source into the area in front of the light module in the form of a light distribution of a second predetermined type; the entrance optics and the at least one additional light source are designed and assigned to one another such that neither the at least one additional light source nor the light emitted by the at least one additional light source alters the intermediate image.
  • the light generated by the at least one additional light source does not influence the intermediate image produced with the light of the at least one light source.
  • the at least one additional light source generates in the intermediate image plane an additional / second intermediate image which does not overlap the (original, generated with the light of the at least one light source) intermediate image.
  • the at least one light source is downstream of a collimator.
  • the light distribution of the first predetermined type does not overlap the light distribution of the second predetermined type in the light image, although it is emitted from the same light exit surface of the light module become.
  • Such light distributions can be used to realize different light functions.
  • the entrance optics and the at least one additional light source can be designed and assigned to each other such that the light generated by the at least one light source according to (or along) a first and the light generated by the at least one additional light source according to a second, different beam path passes through the optical projection device. It is expedient if the at least one additional light source is outside the first beam path - ie not in the first beam path - so that neither the at least one additional light source nor the light emitted by the at least one additional light source changes the intermediate image.
  • the at least one additional light source is set up to produce collimated light which is substantially parallel to the optical axis of the projection device. This has the advantage that with respect to a light image generated with the at least one additional light source, an exact position of the at least one additional light source between the entrance optics and the exit optics and in particular with respect to the intermediate image plane is not relevant, whereby the adjustment of the light module is easier. It may even be advantageous if the at least one additional light source is not arranged in the intermediate image plane.
  • the inlet optics and the exit optics are embodied as matrix-like arrays of micro entrance optics or micro exit optics-micro entrance optics array and micro exit optics array, respectively, which are arranged transversely to the optical axis of the optical projection device.
  • each micro-entry optics at least one, preferably exactly one micro-exit optics corresponds such that they have a common, preferably horizontally extending, optical axis and form a micro-optical system.
  • common optical axis of two optics means that the optical axes of these two optics substantially coincide.
  • the at least one additional light source has a plurality of spaced-apart Lichtabstrahl Schemee for emitting the light between the entrance optics and the exit optics, which Lichtabstrahl Schemee in a substantially transverse to the optical axis of the projection device level - in the so-called Lichtabstrahlebene - are arranged. It is understood that this plane is arranged between the entrance optics and the exit optics. Preferably, by means of each light emission region, a light beam is generated which propagates parallel to the optical axis of the projection device.
  • the at least one additional light source has a light guide element and a light source associated with the light guide element, preferably an LED light source, wherein the Lichtabstrahl Schemee are arranged in the light guide element. It may be advantageous if the light source is not between the entrance optics and the exit optics.
  • the luminous means and the at least one light source are arranged on a common light source carrier. For example, if the at least one light source and the lighting means are designed as LED light sources, these LED light sources can be arranged on a common printed circuit board (on the same print).
  • the light guide element is formed as a light guide plate arranged substantially transversely to the optical axis of the projection device, wherein the light guide plate at least one light input surface for coupling light of the light source, which propagates light in the light guide plate and at the Lichtabstrahl Schemeen from the Light guide plate exits. It is known that the propagation of light within a light guide occurs due to total reflection.
  • the light of the light source can be coupled laterally or from below or from above into the light guide plate. After coupling, the light propagates (due to total reflection) in the direction of the area between the entrance optics and the exit optics.
  • the light spreads in the area Light guide plate substantially transversely to the optical axis of the projection device until it is deflected in the Lichtabstrahl Schemeen and emerges in a direction substantially parallel to the optical axis direction of the light guide plate.
  • the term "light guide plate” is understood to mean a plane light guide element extending in a plane in two directions.
  • each Lichtabstrahl Symposium has a plurality of Lichtauskoppelprismen.
  • the light extraction prisms are preferably configured to couple out the light from the light guide plate in a direction substantially parallel to the optical axis.
  • the light extraction prisms are perpendicular to the propagation direction of the light in the light guide plate. For example, the light extraction prisms on an angle of about 40 °.
  • Feeding (injecting) from different sides into the light guide plate and matching the shape of the light extraction prisms may help to realize even more (more than two) different light functions.
  • micro-entry optical array prefferably has a plurality of intermediate regions assigned to the light emission regions and preferably planar.
  • micro-optics of the micro-entrance optics array and / or the micro-exit optics array may be formed, for example, as convex lenses.
  • the intermediate regions of the micro-entrance optical array preferably have no micro-entry optics and, for example, are designed such that scattering is reduced by the light generated by means of the at least one light source. If the at least one light source generates parallel light or the light of the at least one light source is collimated, for example, by a collimator, it is more likely to encounter the entrance optics, it is particularly advantageous to form the intermediate regions in a planar manner.
  • the light penetrating into the projection device through these intermediate regions is irrelevant to the formation of the intermediate image and thus to the first light function.
  • this light can be shielded (see below).
  • the Lichtabstrahl Schemee are distributed checkerboard in the Lichtabstrahlebene and the intermediate areas in the micro-entrance optics array are distributed like a checkerboard, wherein the Lichtabstrahl Schemee the intermediate areas (in the direction of the optical axis) are arranged downstream.
  • this arrangement is a checkerboard pattern formed preferably in the direction of the optical axis of the optical projection device, preferably of squares.
  • the areas of the checkerboard pattern comprising areas of the checkerboard pattern which comprise light-emitting areas to be arranged corresponding to the intermediate areas of the checkerboard pattern.
  • the intermediate regions are made opaque.
  • a shielding element may be provided with the intermediate regions of corresponding opaque shielding regions, which shielding element shields the intermediate regions from the light of the at least one light source.
  • the at least one additional light source is designed as a carrier for the entrance optics or the exit optics.
  • the entrance optics or the exit optics which are for example as the micro entrance optics array or the micro exit optics array of silicone, arranged on the additional light source, for example, applied to them, in particular connected to this, for example glued.
  • This is particularly advantageous with regard to the synergetic use of photometrically relevant components of a light module (for example, if the substrate plate is used as a light guide).
  • the entry optics in particular the micro entrance optics array, are preferably arranged, for example applied, in particular glued, on a side of the at least one additional light source facing the at least one first light source.
  • the variety of light functions that can be realized with the light module according to the invention can be further increased if two additional light sources are provided, wherein a first of the two additional light sources carries the entrance optics and a second of the two additional light sources carries the exit optics.
  • the exit optics in particular the micro exit optics array, are preferably arranged, for example applied, in particular glued, on a side of the second additional light source facing away from the at least one first light source.
  • the light emission regions of the first additional light source and the light emission regions of the second additional light source are designed and positioned relative to one another such that light rays generated by the corresponding light emission regions propagate in different, non-overlapping regions of the projection device.
  • the light emission regions of the at least one or all additional light sources can be placed in the unimportant regions emitted by the at least one light source, which emits, for example, light for the main light function. This will not affect the main light function.
  • the projection device has at least one aperture device located between the entrance optics and the exit optics, which has at least one aperture device apertures corresponding to the intermediate regions and is adapted to form the intermediate image (for example for a low-beam light distribution) and / or optical aberrations correct.
  • a first diaphragm element can be provided, which first diaphragm element is disposed in front of the light emission regions and shields the light emission regions from the light of the at least one light source.
  • the first diaphragm element is set up to form the intermediate image from the light emitted by the at least one light source, for example for a low-beam light distribution.
  • the at least one additional light source has a shape horizontally, transversely to the optical axis of the optical projection device extending vertically from each other, preferably equidistant spaced strips and the panel element has these strips corresponding opaque areas.
  • the aperture element can be arranged, for example, on the light exit side with respect to the entrance optics and in front of the light guide plate, for example on a light exit surface of the entrance optics or on a side of the light guide plate facing the at least one light source, in particular on the light exit surface of the entrance optics or on the side of the light guide plate facing the at least one light source be upset.
  • the at least one additional light source is designed as a carrier for at least the first diaphragm element.
  • the first panel element is arranged on the at least one additional light source, for example applied to it, in particular printed on this.
  • the first diaphragm element is arranged on one of the at least one light source side facing the at least one additional light source, for example applied, in particular glued.
  • a first additional light source carries at least the first diaphragm element
  • a second additional light source carries the exit optics and the first diaphragm element is disposed in front of the light emission regions of the first additional light source.
  • the exit optics, in particular the micro exit optics array is arranged on one of the at least one light source side facing away from the second of the second additional light source, for example applied, in particular glued.
  • the Lichtabstrahl Schemee the first additional light source and the Lichtabstrahl Schemee the second additional light source are designed and positioned to each other such that propagate from the corresponding Lichtabstrahl Schemeen light beams propagate in different non-overlapping areas of the projection device.
  • a second diaphragm element may be provided, which second diaphragm element is disposed in front of the light emission regions of the second additional light source and arranged to shield the second additional light source and / or to limit light emitted by the first additional light source.
  • the first additional light source is designed as a carrier for the second diaphragm element.
  • the second diaphragm element is arranged on the first additional light source, for example applied to it, in particular printed on it.
  • the second diaphragm element is arranged on one of the at least one light source side facing away from the first additional light source, for example applied, in particular glued.
  • the light distribution of the first predetermined type completes the light distribution of the second predetermined type to a total light distribution or the light distribution of the first predetermined type is independent of the light distribution of the second predetermined type.
  • the light distribution of the second type can be generated independently of whether the light distribution of the first type is being generated or not.
  • daytime running lights can be on - are generated with the light generated by means of at least one additional light source, without causing a Abblertztvertechnik is emitted - the at least one light source is off.
  • the first predetermined type of light distribution may be a main light function light distribution, for example, low beam distribution or high beam distribution.
  • the second predetermined type of light distribution may be a sub-light function light distribution, for example, a turn signal light distribution, position light light distribution, daytime running light light distribution, signlight light distribution.
  • at least one main and at least one secondary light function For example, be realized simultaneously or corresponding light distributions are generated simultaneously.
  • the light distributions of the first and second types may overlap each other (when both are generated). However, it may also be advantageous if the light distribution of the second type does not overlap the light distribution of the first type in the light image (for example low beam distribution with Signlight light distribution).
  • the present invention can bring one or more of the following advantages: multiple light functions from the same light exit surface possible; less installation space than with separate version (several independent light modules) necessary; Homogeneous appearance in the illuminated / unlit state; Light emission areas are imaged by lens optics, which allows a better design of the light distribution and thus light utilization.
  • each figure is provided with a coordinate system. Three directions are indicated: horizontal H and vertical V direction and a main emission direction Z of the motor vehicle light module.
  • the terms “above”, “below”, “vertical”, “horizontal” etc. refer to a professional installation position of the motor vehicle light module in a motor vehicle.
  • the main emission direction Z corresponds to the forward movement direction of the motor vehicle when the motor vehicle light module is arranged in a motor vehicle headlight for generating at least one main light distribution.
  • Figures 1, 1a and 2 each shows a schematic representation of a motor vehicle light module (or a part of the motor vehicle light module) for a headlight, in particular motor vehicle headlight, which may correspond to a light module according to the invention.
  • a motor vehicle light module is particularly well suited for motor vehicle headlights, in which a compact design is in the foreground and from a single and preferably continuous light exit surface several light functions (for example, a main and at least one secondary light function) should preferably be realized simultaneously.
  • this light exit surface corresponds to a light exit surface of an exit optics 22 of at least one projection device 2 (see also FIG FIGS. 1 to 15 ).
  • the motor vehicle light module has at least one light source 1 , for example an LED light source.
  • the at least one light source 1 is preceded by a collimator 9 .
  • the projection device 2 also has an entrance optics 21 .
  • the entry optics 21 and the exit optics 22 are arranged, an intermediate image of light emitted by the at least one light source 1, preferably collimated by the collimator 9 in a light lying between the entrance optics 21 and the exit optics 22, substantially transverse to an optical axis of the projection device 2 standing intermediate image plane to form.
  • the exit optics 22 is set up to image the intermediate image in the form of a light distribution of a first predetermined type into an area in front of the motor vehicle light module.
  • the first type of light distribution may be, for example, a main light function light distribution - ie a light distribution which is generated when the main light function of the motor vehicle light module is activated.
  • a main light function light distribution may be a low beam distribution or (for example, adaptive or glare-free) high beam distribution.
  • At least one additional light source - so-called additional light source 3a, 3c - is provided, which at least one second additional light source 3a, 3c is arranged to emit light between the entrance optics 21 and the exit optics 22.
  • the at least one additional light source 3a, 3c is preferably not a point light source. It is advantageous if the at least one additional light source 3a, 3c extends spatially and occupies a predetermined area between the entrance optics 21 and the exit optics of the projection device.
  • the at least one additional light source 3a, 3b , 3c, 3d (see also FIGS. 7 to 15 ) comprise a luminous means 32 which lies outside the region between the entrance optics 21 and the exit optics 22.
  • the light emitted by the at least one additional light source 3a, 3b is imaged by means of the exit optics 22 in the (same) area in front of the light module in the form of a light distribution of a second predetermined type.
  • the second type of light distribution is a secondary light function light distribution - ie a light distribution which is generated when the secondary light function of the motor vehicle light module is actuated.
  • logos, welcome light functions can be realized.
  • the entrance optics 21 and the at least one additional light source 3a, 3c are formed and assigned to one another such that neither the at least one additional light source 3a, 3c nor the light emitted by the at least one additional light source 3a, 3c illuminates the intermediate image changes.
  • the light generated by the at least one additional light source 3a, 3b, 3c, 3d leaves the intermediate image generated with the light of the at least one light source 1 unaffected / unimpaired / unchanged.
  • the at least one additional light source 3a, 3c generates in the intermediate image plane an additional / second intermediate image which does not overlap the (original) intermediate image.
  • the light generated by the at least one light source 1 propagates according to (or along) a first beam path 100 and the light generated by the at least one additional light source 3a, 3b, 3c, 3d according to a second, different beam path 300a , 300b , 300c , 300d through the optical projection device 2 (see in particular FIGS. 7 to 15 ). It is expedient if the at least one additional light source 3a, 3b, 3c, 3d outside of the first beam path 100 - that is not in the first beam path - is.
  • the at least one additional light source 3a, 3b, 3c, 3d is set up to produce collimated light, which is substantially parallel to the optical axis of the projection device 2.
  • the entrance optics 21 and the exit optics 22 are arranged as matrix-like arrays of micro entrance optics 210 or micro exit optics 220 - micro entrance optics array or micro exit optics - in planes perpendicular to the optical axis of the optical projection device 2.
  • Array - are formed, each micro-entry optics 210 at least one, preferably exactly one micro-exit optics 220 corresponds such that they have a common, preferably horizontally extending, optical axis and form a micro-optical system.
  • the micro-input / output optics 210, 220 may be formed, for example, as convex lenses.
  • the direction of the optical axis of each micro-optics system preferably coincides with the main emission direction Z.
  • common optical axis of two optics means that the optical axes of these two optics substantially coincide.
  • the at least one additional light source 3a, 3b, 3c, 3d may have a plurality of spaced light emission regions 30a, 30b, 30c, 30d for emitting the light between the entrance optics 21 and the exit optics 22 (see in particular FIGS. 9 to 15 ), which Lichtabstrahl Schemee 30a, 30b, 30c, 30d in a plane substantially transverse to the optical axis of the projection device 2 - in the so-called Lichtabstrahlebene are arranged.
  • this plane is arranged between the entrance optics 21 and the exit optics 22.
  • a light bundle 300a, 300b, 300c, 300d is generated, which propagates parallel to the optical axis of the projection device 2.
  • the Lichtabstrahl Schemee 30a, 30b, 30c, 30d of the exit optics 22 are assigned. It is particularly advantageous if each light emission area of a region of the exit optics 22, for example one - if the exit optics is designed as a micro exit optics array - is associated with individual micro exit optics 210 or a horizontal row of the micro exit optics.
  • the decoupling element is located on the rear side of the luminous element (with respect to the emission direction Z). The deflected by the coupling element light exits at the opposite side by a curved exit surface of the filament.
  • the emission characteristic of the luminous element it is possible to influence the emission characteristic of the luminous element by shaping that region of the exit surface at which the light leaves the luminous element.
  • the abovementioned assignment of the light emission regions 30a, 30b, 30c, 30d of the exit optics 22 can serve, for example, for the curvature of the exit optics 22, for example their micro exit optics 210, to be shaped by the at least one additional light source 3a, 3b, 3c , 3d generated photo is used.
  • the light image can therefore be designed on the one hand via the size and / or shape of the Lichtabstrahl Schemee 30a, 30b, 30c, 30d of the at least one additional light source 3a, 3b, 3c, 3d and / or on the imaging properties of the exit optics 22, such as its thickness or thickness of the micro-exit optics 220 and / or shape of a Light exit surface, for example (local / global) curvature.
  • the efficiency of the at least one additional light source 3a, 3b, 3c, 3d is increased.
  • the at least one additional light source 3a, 3c has a light guide element 31a, 31c and the already briefly mentioned light source 32, wherein the light source 32 is associated with the light guide element 31a, 31c.
  • the lighting means 32 is preferably designed as an LED lighting means.
  • the Lichtabstrahl Schemee 30a, 30b, 30c, 30d (in FIGS. 1 and 2 not visible) are preferably arranged in the light guide element 31a, 31b, 31c, 31d.
  • the luminous means 32 does not lie between the entrance optics 21 and the exit optics 22, like the ones shown in FIG Figures 1, 1a and 2 demonstrate.
  • the luminous means 32 can be designed as an LED illuminant.
  • both the LED light source 1 and the LED illuminant 32 are mounted on a common printed circuit board.
  • the LED light source 1 and the LED illuminant 32 can each have a plurality of LEDs, wherein both the LEDs of the LED light source 1 and the LEDs of the LED illuminant 32 are in a plane substantially perpendicular to the optical axis of the projection device 2 are arranged and preferably emit light in the direction of the optical axis.
  • the LED lighting means three side by side (not shown) or one above the other (see FIG. 1a ) arranged LEDs have.
  • An arrangement of the LED illuminant from above / below makes it possible to arrange a plurality of projection devices 2 side by side in a motor vehicle headlight.
  • the optical waveguide element may be formed as a light guide plate 31a, 31b, 31c, 31d , which (in the region between the entrance optics 21 and the exit optics 22) is arranged substantially transversely to the optical axis of the projection device 2.
  • a reference to the above-mentioned prior art is appropriate.
  • WO 2017/066818 A1 all show light modules - so-called microprojection light modules - in which micro-entry optics array and micro-exit optics array each applied to a substrate plate, such as a glass plate, in particular glued.
  • the substrate plates are often present because the micro-entry optics or micro-exit optics of the microprojection light modules can already be arranged during production on such a glass carrier / substrate plate.
  • optical properties, such as focal length, of the lenses (micro-optics) be specified. If a certain focal length is desired, it can be achieved by varying the "thickness" of the substrate plates.
  • the micro-entry optics, micro-exit optics can be made of polycarbonate (PC) and arranged on a substrate plate made of crown glass (for example, B270® glass), for example, be glued.
  • Optical fiber element may be made of polycarbonate, for example.
  • the thickness, ie the extent in the direction of an optical axis, of the entire projection device is also predetermined.
  • Substrate plates for the micro entrance optics array or micro exit optics array can be different in thickness. This has the same reason: the thickness of the projection device is practically predetermined by the fixed dimensions of the lenses in the micro entrance optics array or micro exit optics array.
  • one or more aperture (s) may be provided, which also on a substrate plate - so-called Shuttersubstrat (shutter - borrowed from the English for aperture) - is (are) applied. In this case, the thickness of the projection device can be reduced in the manufacturing process such that the shutter substrate can be inserted.
  • one or more of the light guide plates 31a, 31b, 31c, 31d are formed as a substrate plate of the micro entrance optics array and / or the micro exit optics array or as a shutter substrate.
  • the light guide plate 31a, 31b, 31c, 31d has at least one, preferably laterally or below or above the light guide plate 31a, 31b, 31c, 31d arranged Lichteinkoppel reaction 310a, 310c for coupling light 320a, 320c of the bulb 32, which light in the light guide plate propagates and exits at the light emitting portions 30a, 30b, 30c, 30d from the light guide plate.
  • Specialist knowledge includes the knowledge that the coupled-in light propagates in a light guide due to total reflection.
  • FIGS. 1 and 2 show light guide plates, which are formed in the region between the entrance optics 21 and the exit optics 22 plan and outside of this region have a bent portion 330 a, 330 c.
  • the light guide plates 31a, 31c shown are preferably bent towards their light coupling surfaces 310a, 310c.
  • the abovementioned arrangement of the at least one light source 1 and of the luminous means 32 is made possible in a common plane which is essentially perpendicular to the optical axis.
  • the light 320a, 320c emitted by the respective luminous means 32 parallel to the optical axis of the projection device 2 is transmitted via the respective one Illuminant 32 coupled light input surface 310a, 310c coupled into the light guide plate 31a, 31c, propagates due to the total reflection through the bent portion 330a, 330c in the lying between the entrance optics 21 and the exit optics 22 area of the light guide plate 31a, 31c and is at the Lichtabstrahl Suiteen 30a, 30b, 30c, 30d are coupled out substantially parallel to the optical axis of the projection device 2.
  • each light emission region 30a, 30b, 30c, 30d has a plurality of light extraction prisms.
  • prisms with an angle of incidence of approximately 40 °, which decouple the light in parallel have proven to be practicable.
  • the angle of attack can also be varied, so that a uniform light extraction takes place.
  • the light extraction prisms are arranged to couple out the light from the light guide plate 31a, 31b, 31c, 31d in a direction substantially parallel to the optical axis.
  • the light extraction prisms are preferably perpendicular to the propagation direction of the light in the light guide plate.
  • the at least one additional light source 3a, 3b preferably replaces the substrate plate for the entrance optics 21 and / or exit optics 22, the entrance optics 21 and the exit optics 22 are each referred to as micro entrance optics.
  • the intermediate regions 211 of the micro-entrance optical array are characterized in that they have no micro-entry optics - in this case no convex lens. In this Meaning, the light penetrating into the projection device through these intermediate regions 211 is irrelevant to the formation of the intermediate image and thus irrelevant to the first light function.
  • the Lichtabstrahl Scheme 30a, 30b are in the Lichtabstraussie preferably (see FIG. 1a ) distributed like a checkerboard.
  • the intermediate regions 211 are likewise distributed in a checkerboard pattern in the micro-entrance optics array, the light emission regions 30a, 30b being arranged downstream of the intermediate regions 211 (viewed in the direction of the optical axis of the projection device 2).
  • the intermediate regions 211 are designed to be impermeable to light or a shielding element 23 is provided with the opaque shielding regions 230 corresponding to the intermediate regions 211 (see FIG FIG. 3 ).
  • the shielding element 23 serves, for example, to shield the intermediate regions 211 from the light of the at least one light source 1.
  • the light of the at least one light source 1 does not impinge on the light emission regions 30, is not scattered thereon. This leads to the reduction of unwanted scattered light.
  • the shielding element 23 is preferably arranged in a plane orthogonal to the optical axis of the optical projection device 2 and preferably extends over substantially the entire light entry surface of the entrance optics 21.
  • the shielding element 23 is arranged on the light entry side with respect to the entrance optics 21, for example at a light entry surface of the entrance optics 21, in particular on the light entry surface of the entrance optics 21 is applied, and preferably the light generated by the at least one light source 1 on the micro light.
  • entry optics 210 can not come up with the intermediate regions 211 of the micro entrance optics array.
  • the shielding member 23 may, as FIG. 3 it can be seen to be formed as a planar aperture with a plurality of the opaque shielding regions 230 complementary breakthroughs. However, it is also conceivable that the shielding element 23 is formed as a continuous layer, wherein this layer has regions of different light transmittance / transparency. It is also conceivable that the translucency / transparency of these areas in a controlled manner, such as in a liquid crystal display, is changeable.
  • the at least one additional light source 3a can function as a carrier / carrier element for the entry optics 21 ( FIGS. 1 and 7 to 9 ).
  • the entrance optics 21 is arranged on one of the at least one first light source 1 facing side of the at least one additional light source 3a, for example applied, in particular glued.
  • the at least one additional light source 3a can function as a carrier / carrier element for the exit optics 22 ( FIG. 10 ).
  • the exit optics 22 on one of the at least one first light source 1 opposite side of the at least one additional light source 3a is arranged, for example applied, in particular glued.
  • the light emission regions 30a of the first additional light source 3a and the light emission regions 30b of the second auxiliary light source 3b prefferably be configured and positioned relative to one another in such a way that light rays 300a, 300b generated by the corresponding light emission regions 30a, 30b are in different directions spread out non-overlapping areas of the projection device 2.
  • FIGS. 7 to 11 it can be seen that the Lichtabstrahl Schemee 30a and 30b can emit collimated light parallel to the optical axis of the projection device.
  • the light-emitting regions 30a and 30b are dimensioned and positioned such that light rays 300a emitted by first light-emitting regions 30a are parallel to, for example, above (FIG. Fig. 10 ) of light beams 300b radiated from second light emitting areas 30b.
  • the first light emission regions 30a are positioned below an optical axis of a corresponding micro exit optics 220, the rays 300a at this micro exit optics 220 are refracted and imaged in an area above the horizon (HH line).
  • the rays 300b on this micro exit optics 220 are refracted and imaged into an area below the horizon.
  • a first additional light source 3a a light distribution emitted above the horizon can be generated - for example a Signlight light distribution and with a second additional light source 3b a light distribution lying below the horizon - for example a daytime running light or direction indicator light distribution can be realized ,
  • the projection device 2 can have at least one diaphragm device 7, 8 which lies between the inlet optics 21 and the outlet optics 22 and which has at least one diaphragm device 7, 8 the apertures 70 corresponding to the intermediate regions 211 (see FIG FIG. 4 ).
  • the diaphragm device 7, 8 can be configured to form the intermediate image, for example to create a low-beam distribution with an asymmetrical cut-off line, and / or to correct optical aberrations.
  • the diaphragm device 7, 8 may comprise a plurality of diaphragms.
  • the shape of the at least one diaphragm device 7, 8 depends on the light distribution of the first and / or the second type to be generated.
  • the diaphragm device 7 can, for example, on the light exit side of the light guide plate 31a, 31b are applied and has an array of openings 70, which takes into account the intermediate regions 211 in the micro-entrance optical array or the opaque areas of the shielding element 23.
  • a first diaphragm element 4, 5 is provided, which first diaphragm element 4, 5 is the Lichtabstrahl Schemeen 30c, 30d upstream and is arranged to shield at least the Lichtabstrahl Societye 30c, 30d of the light of the at least one first light source 1.
  • respective opaque areas 40, 50 are provided in the first panel member 4, 5 for shielding the light emitting areas 30c, 30d.
  • the at least one additional light source 3c carries the first diaphragm element 4, 5 (FIG. FIG. 2 ).
  • the light guide plate can simultaneously represent the holder for the microlens array (micro entrance optics array and / or micro exit optics array). This simplifies the system, because in this case, the light guide plate can take the place of the substrate plate for micro-entry optics or micro-exit optics, whereby insertion loss of the projection device is reduced but also required space is smaller.
  • the at least one additional light source 3c carries the function of such a carrier.
  • the Lichtabstrahl Societye 30c, 30d in the Lichtabstraussie the at least one additional light source 3c, 3d for example, a shape horizontally, transversely to the optical axis of the optical projection device 2 / to the main emission direction Z extending, vertically (in the direction of V) from each other, preferably equidistantly spaced Have stripes.
  • the diaphragm element 4, 5 it is expedient for the diaphragm element 4, 5 to have light-impermeable regions 40, 50 corresponding to these strips (see FIG FIGS. 5 and 6 ).
  • the light emission regions 30c, 30d are preferably arranged directly (for example 0-5 mm) after, for example, on the first diaphragm element 4, 5.
  • the first diaphragm element 4, 5 is preferably arranged between the entrance optics 21 formed, for example, as the abovementioned micro entrance optics array, and the light emission areas 30c, 30d.
  • the first diaphragm element 5 can be set up to form the intermediate image for a low-beam light distribution from the light emitted by the at least one light source 1.
  • a diaphragm element may for example have a plurality of corresponding openings.
  • aperture element 4, 5 is applied on the light exit side with respect to the entrance optics 21 on the side of the light guide plate 31c, 31d facing the at least one light source 1.
  • first additional light source 3c carrying at least the first diaphragm element 4, 5
  • second additional light source 3d carrying the exit optical system 22 (see FIG FIGS. 14 and 15 ) and the first diaphragm element 4, 5 is disposed in front of the light-emitting regions 30c of the first auxiliary light source 3c.
  • the exit optics in particular the micro exit optics array on one of the at least one first light source 1 side facing away from the second additional light source 3d arranged, for example applied, in particular glued.
  • the light-emitting regions 30c of the first auxiliary light source 3c and the light-emitting regions 30d the second additional light source 3d are designed and positioned relative to one another such that light beams 300c, 300d generated by the corresponding light emission regions 30c, 30d propagate in different, non-overlapping regions of the projection device 2.
  • a second diaphragm element 6 can be provided.
  • the second diaphragm element 6 can, for example, limit and / or collimate light emitted by the first additional light source 3c (see, for example, FIGS FIG. 13 and 15 ).
  • the second diaphragm element 6 can be arranged in front of the light emission regions 30d of the second additional light source 3d. It is advantageous if the second diaphragm element is set up to shield the second additional light source 3d.
  • the first diaphragm element 4, 5 and the second diaphragm element 6 may additionally be arranged to form the intermediate image, for example one To provide low-beam light distribution with an asymmetrical cut-off line, and / or to correct optical aberrations ( FIGS. 12 to 15 ).
  • the first diaphragm element 4, 5 and the second 6 may be formed as a planar diaphragm with a plurality of apertures.
  • FIGS. 12 to 15 show sectional views of an enlarged portion of a projection device of a motor vehicle light module according to a second embodiment with different numbers of aperture elements 4, 5, 6 and additional light sources 30c, 30d.
  • the at least one accessory light source may replace the shutter substrate or micro exit optics array substrate plate - the micro exit optics array substrate plate.
  • FIGS. 12 to 15 It can be seen that the Lichtabstrahl Societye 30c and 30d collimated light 300c, 300d, preferably parallel to the optical axis of the Radiate projection device 2.
  • the light-emitting regions 30c and 30d are dimensioned and positioned such that light rays 300c emitted by first light-emitting regions 30c are parallel to, for example, above (FIG. FIGS. 14 and 15 ), Light beams 300d radiated from second light emitting portions 30d extend.
  • the beams 300c are broken at this micro-exit optics 220 and into a Area shown above the horizon.
  • the horizon is often referred to as "line HH" or "HH line”. This is a line corresponding to the horizon on a measuring screen on which light distributions generated by light modules are measured in a motor vehicle lighting technology laboratory.
  • Line HH is part of the screen coordinate system that is common in automotive lighting technology.
  • Line HH is a horizontal line that runs parallel to the road surface (in the laboratory - imaginary roadway) and through an intersection HV of the photometric beam axis from the center of the light module to the screen. The point HV is the origin of the screen coordination system.
  • the rays 300d are refracted at this micro exit optics 220 and into one Area shown below the horizon.
  • a light distribution emitted above the horizon can be generated - for example a signal light distribution and with a second additional light source 3d a light distribution lying below the horizon - for example a daytime running light or direction indicator light distribution become.
  • the light emission regions 30c, 30d are arranged, preferably directly, on or behind the corresponding opaque region of the corresponding (first or second) diaphragm element 4, 5, 6.
  • the first additional light source 3c also carries the second diaphragm element 6.
  • the second diaphragm element 6 on one of the at least one first light source 1 opposite side of the first additional light source 3c preferably the light guide plate 31c, 31d, arranged, for example applied, in particular glued.
  • a deployable light module for a motor vehicle headlight has other parts that have not been explicitly mentioned in connection with the present invention. These other parts are (exemplary but not exhaustive) heat sink, support frame, mechanical and / or electrical actuators, covers and so on and immediately. For the sake of simplicity, however, the description of these standard components of a light module is omitted here.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
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  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP18174282.6A 2018-05-25 2018-05-25 Module d'éclairage pour un phare de véhicule automobile Withdrawn EP3572719A1 (fr)

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EP18174282.6A EP3572719A1 (fr) 2018-05-25 2018-05-25 Module d'éclairage pour un phare de véhicule automobile
JP2020562752A JP7004849B2 (ja) 2018-05-25 2019-05-14 自動車投光装置のライトモジュール
EP19724192.0A EP3803196B1 (fr) 2018-05-25 2019-05-14 Module d'éclairage pour un phare de véhicule automobile
PCT/EP2019/062255 WO2019224041A1 (fr) 2018-05-25 2019-05-14 Module d'éclairage pour phare de véhicule automobile
US17/048,004 US11193643B2 (en) 2018-05-25 2019-05-14 Light module for a motor vehicle headlamp
CN201980035071.6A CN112154288B (zh) 2018-05-25 2019-05-14 用于机动车探照灯的照明模块
KR1020207021084A KR102410899B1 (ko) 2018-05-25 2019-05-14 자동차 헤드램프용 광 모듈

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WO2017066817A1 (fr) 2015-10-23 2017-04-27 Zkw Group Gmbh Module lumineux à microprojection pour projecteur de véhicule
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WO2018032025A1 (fr) * 2016-08-19 2018-02-22 Zkw Group Gmbh Unité d'éclairage pour un projecteur de véhicule automobile, destinée à produire au moins deux distributions de lumière
CN206592963U (zh) * 2017-01-19 2017-10-27 上海小糸车灯有限公司 一种具有adb功能的led光源远近光一体车灯模组

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KR20220001249A (ko) * 2020-06-29 2022-01-05 에스엘 주식회사 차량용 램프
WO2022110570A1 (fr) * 2020-11-27 2022-06-02 华域视觉科技(上海)有限公司 Élément optique à faisceau élevé, unité d'éclairage à faisceau élevé et véhicule
US11608955B2 (en) * 2020-12-22 2023-03-21 Sl Corporation Lamp for vehicle

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KR20200102467A (ko) 2020-08-31
WO2019224041A1 (fr) 2019-11-28
CN112154288B (zh) 2023-02-24
US20210108773A1 (en) 2021-04-15
JP7004849B2 (ja) 2022-02-04
KR102410899B1 (ko) 2022-06-22
EP3803196A1 (fr) 2021-04-14
CN112154288A (zh) 2020-12-29
EP3803196B1 (fr) 2023-03-29
JP2021521609A (ja) 2021-08-26
US11193643B2 (en) 2021-12-07

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