EP3330597A1 - Primary lens, secondary lens, module, arrangement, vehicle headlamp and headlamp system - Google Patents
Primary lens, secondary lens, module, arrangement, vehicle headlamp and headlamp system Download PDFInfo
- Publication number
- EP3330597A1 EP3330597A1 EP17197505.5A EP17197505A EP3330597A1 EP 3330597 A1 EP3330597 A1 EP 3330597A1 EP 17197505 A EP17197505 A EP 17197505A EP 3330597 A1 EP3330597 A1 EP 3330597A1
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- Prior art keywords
- optics
- coupling
- line
- coupling surfaces
- module
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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]
- F21S41/151—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—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
- F21S41/26—Elongated lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
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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
- F21W2102/14—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
- F21W2102/145—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam
-
- 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 is based on an optic, in particular a primary optic, according to the preamble of claim 1. Furthermore, the invention relates to an optic, in particular a secondary optics. In addition, the invention provides a module with a radiation source matrix. Furthermore, the invention relates to an arrangement having a plurality of radiation source matrices and optics. In addition, a vehicle headlight is provided.
- matrix headlights for vehicles are known. These have a matrix of light-emitting diodes (LEDs). In this case, each individual LED can be controlled separately and thereby switched on and off and dimmed.
- the LEDs can be arranged in single-line or multi-line and each form a light pixel.
- the object of the present invention is an optics, in particular a primary optics, for a radiation source matrix, an optics, in particular a secondary optics, for the radiation source matrix, a module with a radiation source matrix, an arrangement, a headlight and a headlamp system to create a high quality photograph in a cost effective manner.
- optics in particular the primary optics
- optics in particular secondary optics, according to the features of claim 8
- module in terms of optics, in particular secondary optics, according to the features of claim 9, with respect to the arrangement according to the features of claim 10
- headlamp according to the features of claim 12
- headlamp system according to the features of claim 13.
- an optic in particular a primary optic, is provided for a radiation source matrix.
- This has a plurality or plurality of arranged in at least one line coupling surfaces and at least one decoupling surface.
- at least one of the coupling-in surfaces which is arranged at one line end of the line formed by the coupling surfaces arranged in at least one line and is also referred to below as a lateral or edge-side coupling surface, widened in the direction of the at least one line.
- at least one edge-side coupling surface can be wider than a middle coupling surface.
- Such optics when used with an upstream radiation source matrix, enable asymmetric light distribution and an optimized ratio of light image width to center resolution. This is extremely advantageous when using the optics (primary optics) in a vehicle headlight of a vehicle, since in a cost effective manner in the center region, a comparatively high resolution is achieved and in the edge region a widened light image is created by simply at least one of the peripheral coupling surfaces is widened.
- both edge-side coupling surfaces or edge pixels or side pixels of the at least one line are widened.
- the light image can have a comparatively high width on device-side, simple manner on both edge sides, wherein a high resolution is present in the center.
- the marginal coupling surfaces in the direction of at least one row have a different width to each other. If the optic is used, for example, in the vehicle headlight, the edge-side coupling surface, which is spaced further from the longitudinal axis of the vehicle, is preferably wider than the inner edge-side coupling surface.
- the vehicle in which the optics (primary optics) can be used with a headlight can be an aircraft or a water-bound vehicle or a land-bound vehicle.
- the land-based vehicle may be a motor vehicle or a rail vehicle or a bicycle. Particularly preferred is the use of the vehicle headlight in a truck or passenger car or motorcycle.
- the coupling surfaces are seen in a plane which extends in the direction of at least one row and in the direction of the optical main axis of the optics, convex.
- the coupling surfaces in this plane have an arc shape.
- the coupling surfaces can be designed to be elongated or web-like in a direction transverse to the at least one row and transversely to the main optical axis. They can each form part of a cylindrical lateral surface.
- the coupling surfaces abut each other, whereby a transition of the coupling surfaces in the photograph is not or hardly visible.
- the middle coupling surfaces are designed the same, resulting in a uniform light image in the middle or central area.
- the middle or central coupling surfaces are preferably all coupling surfaces without the edge-side coupling surfaces. Vertexes of the middle coupling surfaces are preferably in a common plane which extends, for example, transversely to the main optical axis and in the direction of the at least one row.
- a high quality of light image with high cost-effectiveness can be given if the optics (primary optics) 6 to 14, in particular 6 to 12, coupling surfaces, which may preferably be provided for corresponding to 6 to 14, in particular 6 to 12, radiation sources.
- the optics (primary optics) such a number of coupling surfaces leads to low energy consumption when a corresponding number of radiation sources are used, and to a high-resolution light image.
- At least one lateral coupling surface extends from the adjacent coupling surface towards its vertex with a first, in particular curved, area section. This can be made to the main optical axis. From the apex may then extend a second, in particular curved, surface portion away, which is preferably employed to the main optical axis. The second surface portion may be seen as wider in the direction of the line than the first surface portion. Furthermore, a depth of the second surface section in the direction of the main optical axis measured is preferably greater than a depth of the central coupling surfaces.
- a widened coupling surface can be implemented on device technology simple way.
- the decoupling surface of the optics is designed asymmetrically, with which an asymmetrical light image can be formed, which is extremely advantageous for a vehicle headlight.
- the decoupling surface is in particular elongated and preferably extends transversely to the main optical axis and in the direction of the at least one row.
- the decoupling surface can have four corner areas on the circumference.
- device technology is simply at least one corner region or are a plurality of corner regions or all corner regions are curved or trimmed or rounded. This configuration of the corner region or of the corner regions furthermore leads to the fact that unwanted light reflections are suppressed and artefact formation in the light distribution is reduced or avoided.
- the corner regions on the one side of the decoupling surface can in this case have a smaller radius than the corner regions of the other side.
- the corner areas with the large radius are preferably located below and the corner areas with the small radius at the top. By mirroring the secondary lens, the small radius is displayed on the road.
- the optics (primary optics) has a radial collar between the coupling surfaces and the decoupling surface for easy mounting in the direction of the main optical axis. It is thus covered by a radial collar over which it can be attached.
- the main optical axis in the direction of the line can extend between two central coupling surfaces.
- the main optical axis is arranged offset from the center of the line. If, for example, 7 coupling surfaces with 5 central coupling surfaces are provided, then the main optical axis can be arranged, for example, between the central coupling surface and the coupling surface adjacent thereto.
- a respective average coupling surface is designed such that it can be used to illuminate an angular range of a light image of less than or equal to 3 °.
- the angular range here is preferably measured in a plane which lies in the main optical axis and which extends parallel to the direction of extension of the line. In the installed state of the optics (primary optics) in the headlight, this may be the horizontal plane. Close the angular ranges of the coupling surface essentially abutting each other, thus allowing a homogeneous light image.
- the optics are further configured such that an illuminated angle range in a plane in which the main optical axis lies and which extends parallel to the extension direction of the line or horizontally between +/- 20 °, preferably between +/- 40 °, more preferably between -20 ° and + 12 °.
- the optics primary optics
- the optics may be designed such that it illuminates an angular range of the light image in a plane which extends parallel to the main optical axis and transversely to the extension direction of the line or vertically, by 7 °. If the main optical axis marks a 0 ° position, then the illuminated angular range in this plane can extend, for example, from -2 ° to + 5 °.
- an optic in particular a secondary optic, which is embodied for example as a lens, is provided for a vehicle headlight.
- This can have a coupling surface and a decoupling surface.
- a structure is provided at the coupling-in surface and / or at the decoupling surface, with which transitions of at least two or some or all of the radiation sources are smoothed or blurred or "smoothed". This can be easily created a uniform photo.
- the structure of the optics is formed for example by lines. These can be in parallel distance extend to each other. Furthermore, the lines preferably extend transversely to the main optical axis and / or transversely to the line of the radiation source matrix. In the installed state of the optics (secondary optics), for example in the vehicle headlight, the lines can extend in the vertical direction.
- the smoothing at a respective line of optics takes place in an angle range in the light image of 0.2 ° to 3 °, preferably from 0.2 ° to 0.8 °, the angle range is seen in a plane in which the main optical axis extends and extends in the direction of the line of the radiation source matrix or in the installed state in the horizontal direction.
- the optics (secondary optics) preferably have an asymmetrical coupling-in surface and / or an asymmetrical coupling-out surface.
- the coupling-out surface of the optics (secondary optics) and / or the coupling-in surface of the optics (secondary optics) can have a vertex, wherein a first surface section and a second surface section can extend away from the vertex.
- the first surface portion is preferably longer than the second surface portion.
- an asymmetrical decoupling surface can be created in a simple manner.
- the major optical axis preferably extends through the vertex (s).
- the decoupling surface and / or the coupling-in surface can be designed convex or arc-shaped in a plane which extends along the main optical axis and which extends along the line of the radiation source matrix or which can extend in the installed state in the horizontal direction.
- the optics (primary optics, secondary optics) consists of silicone, which leads to a weight advantage.
- optics are, for example, a lens. It is conceivable to provide the optics (primary optics, secondary optics) when used in the vehicle headlight for a high beam function.
- a module with a radiation source matrix and with an optics (primary optics) according to one or more of the preceding aspects.
- This solution has the advantage that when needed with little device complexity simply combined several modules and the photos can be superimposed. If, for example, a module with 6 to 12 radiation sources arranged in the form of a matrix is provided, then a combination of two modules can lead to 12 to 24 pixels or, in the superposition of three modules, to 18 to 36 pixels.
- the radiation source matrix is formed, for example, from light-emitting diodes (LEDs).
- An LED or light emitting diode may be in the form of at least one individually packaged LED or in the form of at least one LED chip having one or more light emitting diodes.
- the at least one LED can be equipped with at least one own and / or common optics for beam guidance, for example with at least one Fresnel lens or a collimator.
- LEDs instead of or in addition to inorganic LEDs, for example based on AlInGaN or InGaN or AlIn-GaP, it is generally also possible to use organic LEDs (OLEDs, eg polymer OLEDs).
- OLEDs organic LEDs
- the LED chips can be directly emitting or have an upstream phosphor.
- the LED may be a laser diode or a laser diode array.
- the emission wavelengths of the LED can be in the ultraviolet, visible or infrared spectral range.
- the LEDs can additionally be equipped with their own converter.
- the LED chips emit white light in the standardized ECE white field of the automotive industry, for example realized by a blue emitter and a yellow / green converter.
- the module has a plate or printed circuit board or Metal Core Printed Circuit Board (MCPCB) or an AL MCPCB to which the radiation sources are attached in one or more rows.
- the optics in particular via an optic holder, are fixed to the plate.
- the optical holder is for example simply formed by webs. The webs in turn may form a frame comprising the radiation sources.
- the optics (primary optics) can then preferably be attached via their radial collar in the optics holder.
- a connection can furthermore be provided on the plate.
- This is, for example, a plug or a socket.
- a so-called “binning resistor” or container resistance can be provided on the plate.
- a NTC (Negative Temperature Coefficient) resistor to prevent overheating of the module on the plate.
- a drive electronics can be mounted on the plate.
- a respective group has a radiation source matrix, which is followed in each case by an optical system (primary optics) according to one or more of the preceding aspects.
- a respective group has an optic (secondary optics), which is designed in particular according to one or more of the preceding aspects, and which is connected downstream of the primary optics.
- the light images of the groups overlap.
- the respective radiation source matrix with the associated optics can each be designed as a module according to one or more of the preceding aspects.
- the main optical axis of a respective group is offset parallel to the main optical axis of the respective other group.
- the main optical axes may in this case lie in a plane which extends parallel to the direction of extension of the line of the radiation source matrices or which extends horizontally, in particular in the installed state of a vehicle headlight.
- the groups are the same.
- a distance of the optical main axes of the groups is preferably selected such that the illuminated angle ranges of the central coupling surfaces overlap uniformly. This can lead to a resolution which is given by the following formula: "Angle range of a middle coupling surface / number of groups". If the illuminated angle range (pitch) of a central coupling surface is, for example, 3 °, a resolution of 1.5 ° in the region of the middle coupling surfaces can be achieved with uniform superposition of two groups. Two groups can thus overlap with half a pitch.
- a headlight in particular for a vehicle, is provided with a module or an arrangement according to one or more of the preceding aspects.
- a headlamp system for a vehicle may be provided which has a left and a right headlamp according to the preceding aspect.
- the illuminated angle ranges of the central coupling surfaces of the module or the arrangement of the left headlamp can then be overlapped with the illuminated angle ranges of the central coupling surfaces of the module or the arrangement of the right headlamp.
- the overlap for example, congruent or overlap can be done by an offset.
- the superimposed area of both headlights can be offset, for example, by a certain proportion of the pitch, for example by a quarter pitch. The resolution can be further increased thereby.
- FIG. 1a an optic is shown as a primary optic 1 in a front view, wherein a decoupling surface 2 can be seen.
- a decoupling surface 2 can be seen due to the transparent design of the primary optics 1 is a structure of a rear coupling surface 4, see also FIG. 1b , and a radiation source matrix 6 can be seen.
- FIG. 1b a side view of the primary optic 1 is shown.
- the decoupling surface 2 has four corner regions 8 to 14. These are rounded off.
- the according to FIG. 1a Upper corner regions 8 and 10 in this case have a smaller radius than the lower corner regions 12 and 14.
- the corner regions 8 and 10 are also seen in the vertical direction arranged above. Due to the asymmetric trimming of the decoupling surface 2, an asymmetrical light image can be generated.
- Primary optics 1 is the primary optic for the left vehicle headlight of a vehicle.
- the corner regions 8 and 14 lie in an installed state inside and the other corner regions 10 and 12 outside. A trimming or rounding of the corner region 12 is greater than that of the corner region 14.
- FIG. 1b is, as already explained above, the coupling surface 4 can be seen.
- the single-row radiation source matrix 6 which has seven radiation sources in the form of light-emitting diodes (LEDs) 16 to 28.
- the OSRAM type OSLON Black Flat (LUW HWQP) can be used as LED light source with a brightness bin of 6N (or higher) and with an electrical power consumption of 4.55 W.
- FIG. 1b has the coupling surface 4 for a respective LED 16 to 28, a segment-like coupling surface 30 to 42.
- the coupling surfaces 30 and 42 edge and the coupling surfaces 32 to 40 are arranged centrally.
- the design of the middle coupling surfaces 32 to 40 is the same here.
- a width of the edge-side coupling surfaces 30 and 42 seen in the row direction of the LEDs 16 to 28 is wider than that of the central coupling surfaces 32 to 40.
- 30 and 42 provided by the corresponding design of the side segments provided as coupling surfaces an asymmetric design.
- an asymmetric light distribution and an optimized ratio of light image width to center resolution are possible.
- the asymmetry may be stronger, especially with fewer LEDs, or less, especially with many LEDs formed.
- the light distribution is then designed so that the central region, in particular with an LED number of less than or equal to 8, provides a uniform pixel distribution, and the edge regions provide an asymmetrical light distribution.
- Such a single-line radiation source matrix is managed by OSRAM under the product name SMATRIX or sMArTRIX.
- FIG. 2 is the radiation source matrix 6 with the downstream primary optics 1 shown. Furthermore, an optic in the form of a secondary optics 44 is provided, which is connected downstream of the primary optics 1.
- the secondary optics 44 is also designed asymmetrically. It has an asymmetric coupling-in surface 46 and an asymmetrical coupling-out surface 48.
- the coupling-out surface 48 has a structure in the form of vertically extending lines 50, of which only one is provided with a reference numeral for the sake of simplicity.
- Both the coupling surface 46 and the decoupling surface 48 are convex, with the main optical axis 56 passing through a respective vertex 52, 54. This is offset in this case to the center of the secondary optics 44.
- the main optical axis 56 extends between the coupling surfaces 34 and 36 and thus between the LEDs 20 and 22. It is conceivable to make the main axis 56 to the line-shaped radiation source matrix 6 easy.
- FIG. 3 shows an assembly 58 with a first group 60 and a second group 62.
- a respective group 60, 62 in this case has a module 64 which in FIG. 4 is shown. Furthermore, a respective group has the secondary optics 44 connected downstream of the module 64.
- the groups 60 and 62 are in this case arranged in such a way that their light images overlap and form a common light image 66, which preferably fulfills the ECE standard for vehicle headlights.
- the module 64 has a printed circuit board 68 on which the radiation source matrix 6 is mounted. Furthermore, an optical holder in the form of a frame 70, which comprises the radiation source matrix 6, is arranged on the printed circuit board 68. Above the frame 70, the primary optic 1 is supported by its radial collar 72, see also FIG. 1b , Furthermore, a connection 74 is provided on the printed circuit board 68.
- a respective module 64 of Figure 3 thus has seven LEDs 16 to 28, see also FIG. 1b , on. Thus, the light image 66 can be controlled with a total of 14 LEDs.
- FIG. 5a the groups 60 and 62 are shown in which the secondary optics 44 and the modules 64 are arranged side by side.
- the arrangement of the groups 60 and 62 in FIG. 3 offset each other.
- Figure 5b shows a front view of the groups 60 and 62.
- the lines 50 of the secondary optics 44 can be seen, which extend at a parallel distance from each other and in the vertical direction.
- the radiation source arrays 6 of the modules 64 of the groups 60 and 62 are off FIG. 5a shown.
- a binning resistor 76 and an NTC resistor 78 are provided for a respective printed circuit board 68.
- a control module (LED Driver Module (LDM)) 80 is provided for controlling the individual LEDs.
- FIG. 7 is the illuminated angle range of the light image 66 off FIG. 3 shown.
- the middle LEDs 18 to 26 with the central coupling surfaces 32 to 40 in the light image 66 light off FIG. 3 each measured an angular range of 3 ° in a plane that is in accordance with FIG. 2 in the main optical axis 56 and the line of the radiation source matrix 6 extends.
- the photographs of the modules 64 off FIG. 3 are then overlapped such that the from the middle LEDs 18 to 24 off FIG. 1b evenly overlap illuminated illumination areas.
- a resolution of 1.5 ° is provided in the middle angle range.
- the 0 ° position marks the position of the main optical axis 56, see also FIG.
- the average angular range is provided with the resolution of 1.5 ° from -0 ° to + 6 ° and thus extends over a range of 15 °.
- the angle range on the left which follows FIG. 1b with the LEDs 28 and the coupling surfaces 42 of a respective module 64, see FIG. 3b , is lit.
- the angle range closes according to FIG. 1b with the LEDs 16 and the coupling surfaces 30 of the modules 64, see FIG. 3 is lit.
- the left angle range then extends from -20 ° to -9 ° and the right angle range from + 6 ° to + 12 °.
- a resolution of the left Angle range is 11 ° and a resolution of the right angle range 3 °.
- FIG. 8 are the lines of the same light intensity of the light image off FIG. 3 shown, with all the LEDs of the modules 64 are turned on.
- the main optical axis 56 from FIG. 2 is located at the intersection of the axes x and y.
- the outer line 82 has a luminous intensity of 625 cd, the next inner line 84 a luminous intensity of 25,000 cd, the next inner line 86 a luminous intensity of 50,000 cd and the inner line 88 a luminous intensity of 75,000 cd.
- FIG. 9 shows various photographs 90 to 100 of the arrangement 58 from FIG. 3 ,
- the light images 90 to 100 are detected in a plane extending transversely to the main optical axis 56 FIG. 2 extends.
- all LEDs are turned on.
- the LEDs 22, see FIG. 1b of a respective module 64 FIG. 3 switched off, whereby an angle range of 3 ° is no longer illuminated.
- two LEDs 22 and 24 in one of the modules 64 and one LED 22 in the other module 64 are turned off, whereby an angular range of 4.5 ° is not illuminated.
- the LEDs 22 and 24 are then switched off in the case of a respective module 64.
- the LED 26 is additionally switched off in one of the modules 64.
- the LEDs 22 to 26 are switched off in both modules 64, so that an angle range of 9 ° is not illuminated.
- a primary optic with a decoupling surface and a plurality of coupling surfaces, the opposite a radiation source matrix can be arranged.
- the line-shaped coupling surfaces have, on the one hand, an end-side coupling-in surface and, on the other hand, a further end-side coupling-in surface. At least one of the end-side coupling surfaces is widened in comparison to a respective central coupling surface.
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Abstract
Offenbart ist eine Primäroptik (1) mit einer Auskoppelfläche (2) und einer Vielzahl von Einkoppelflächen (30-42), die gegenüberliegend einer Strahlungsquellen-Matrix (6) anordbar sind. Die zeilenförmig angeordneten Einkoppelflächen (30-42) weisen einerseits eine endseitige Einkoppelfläche (30) und andererseits eine weitere endseitige Einkoppelfläche (42) auf. Zumindest eine der endseitigen Einkoppelflächen (30, 42) ist verbreitert im Vergleich zu einer jeweiligen mittleren Einkoppelfläche (32-40) ausgebildet. Disclosed is a primary optic (1) with a decoupling surface (2) and a plurality of coupling surfaces (30-42), which can be arranged opposite a radiation source matrix (6). The line-shaped coupling surfaces (30-42) have, on the one hand, an end-side coupling-in surface (30) and, on the other hand, a further end-side coupling-in surface (42). At least one of the end-side coupling surfaces (30, 42) is widened compared to a respective central coupling surface (32-40) is formed.
Description
Die Erfindung geht aus von einer Optik, insbesondere von einer Primäroptik, gemäß dem Oberbegriff des Anspruchs 1. Des Weiteren betrifft die Erfindung eine Optik, insbesondere eine Sekundäroptik. Außerdem sieht die Erfindung ein Modul mit einer Strahlungsquellen-Matrix vor. Des Weiteren betrifft die Erfindung eine Anordnung mit mehreren einer Strahlungsquellen-Matrizen und Optiken. Außerdem ist ein Fahrzeugscheinwerfer vorgesehen.The invention is based on an optic, in particular a primary optic, according to the preamble of claim 1. Furthermore, the invention relates to an optic, in particular a secondary optics. In addition, the invention provides a module with a radiation source matrix. Furthermore, the invention relates to an arrangement having a plurality of radiation source matrices and optics. In addition, a vehicle headlight is provided.
Aus dem Stand der Technik sind sogenannte Matrix-Scheinwerfer für Fahrzeuge bekannt. Diese weisen eine Matrix aus Licht emittierenden Dioden (LEDs) auf. Hierbei kann jede einzelne LED separat angesteuert und hierdurch ein- und ausgeschaltet sowie gedimmt werden. Die LEDs können einzeilig oder mehrzeilig angeordnet sein und jeweils einen Lichtpixel bilden.From the prior art so-called matrix headlights for vehicles are known. These have a matrix of light-emitting diodes (LEDs). In this case, each individual LED can be controlled separately and thereby switched on and off and dimmed. The LEDs can be arranged in single-line or multi-line and each form a light pixel.
Die Aufgabe der vorliegenden Erfindung ist es, eine Optik, insbesondere eine Primäroptik, für eine Strahlungsquellen-Matrix, eine Optik, insbesondere eine Sekundäroptik, für die Strahlungsquellen-Matrix, ein Modul mit einer Strahlungsquellen-Matrix, eine Anordnung, einen Scheinwerfer und ein Scheinwerfersystem zu schaffen, um auf kostengünstige Weise ein qualitativ hochwertiges Lichtbild zu erzeugen.The object of the present invention is an optics, in particular a primary optics, for a radiation source matrix, an optics, in particular a secondary optics, for the radiation source matrix, a module with a radiation source matrix, an arrangement, a headlight and a headlamp system to create a high quality photograph in a cost effective manner.
Die Aufgabe hinsichtlich der Optik, insbesondere der Primäroptik, wird gelöst gemäß den Merkmalen des Anspruchs 1, hinsichtlich der Optik, insbesondere der Sekundäroptik, gemäß den Merkmalen des Anspruchs 8, hinsichtlich des Moduls gemäß den Merkmalen des Anspruchs 9, hinsichtlich der Anordnung gemäß den Merkmalen des Anspruchs 10, hinsichtlich des Scheinwerfers gemäß den Merkmalen des Anspruchs 12 und hinsichtlich des Scheinwerfersystems gemäß den Merkmalen des Anspruchs 13.The object in terms of optics, in particular the primary optics, is achieved according to the features of claim 1, in terms of optics, in particular secondary optics, according to the features of
Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.Particularly advantageous embodiments can be found in the dependent claims.
Erfindungsgemäß ist eine Optik, insbesondere eine Primäroptik, für eine Strahlungsquellen-Matrix vorgesehen. Diese hat eine Mehrzahl oder Vielzahl von in zumindest einer Zeile angeordneten Einkoppelflächen und zumindest eine Auskoppelfläche. Vorteilhafterweise ist zumindest eine der Einkoppelflächen, die an einem Zeilenende der von den in zumindest einer Zeile angeordneten Einkoppelflächen gebildeten Zeile angeordnet ist und nachstehend auch als seitliche oder randseitige Einkoppelfläche bezeichnet wird, in Richtung der zumindest einen Zeile gesehen, verbreitert. Somit kann zumindest eine randseitige Einkoppelfläche breiter als eine mittlere Einkoppelfläche sein.According to the invention, an optic, in particular a primary optic, is provided for a radiation source matrix. This has a plurality or plurality of arranged in at least one line coupling surfaces and at least one decoupling surface. Advantageously, at least one of the coupling-in surfaces, which is arranged at one line end of the line formed by the coupling surfaces arranged in at least one line and is also referred to below as a lateral or edge-side coupling surface, widened in the direction of the at least one line. Thus, at least one edge-side coupling surface can be wider than a middle coupling surface.
Eine derartige Optik (Primäroptik) ermöglicht im Einsatz bei einer vorgeschalteten Strahlungsquellen-Matrix eine asymmetrische Lichtverteilung und ein optimiertes Verhältnis von Lichtbildbreite zur Zentrumsauflösung. Dies ist äußerst vorteilhaft beim Einsatz der Optik (Primäroptik) in einem Fahrzeugscheinwerfer eines Fahrzeugs, da auf kostengünstige Weise im Zentrumsbereich eine vergleichsweise hohe Auflösung erzielt ist und im Randbereich ein verbreitertes Lichtbild geschaffen wird, indem einfach zumindest eine der randseitigen Einkoppelflächen verbreitert ist.Such optics (primary optics), when used with an upstream radiation source matrix, enable asymmetric light distribution and an optimized ratio of light image width to center resolution. This is extremely advantageous when using the optics (primary optics) in a vehicle headlight of a vehicle, since in a cost effective manner in the center region, a comparatively high resolution is achieved and in the edge region a widened light image is created by simply at least one of the peripheral coupling surfaces is widened.
Vorzugsweise sind beide randseitigen Einkoppelflächen oder Randpixel oder Seitenpixel der zumindest einen Zeile verbreitert. Somit kann das Lichtbild auf vorrichtungstechnisch einfache Weise auf beiden Randseiten eine vergleichsweise hohe Breite aufweisen, wobei im Zentrum eine hohe Auflösung vorliegt. Denkbar ist, dass die randseitigen Einkoppelflächen in Richtung der zumindest einen Zeile gesehen eine unterschiedliche Breite zueinander aufweisen. Wird die Optik beispielsweise im Fahrzeugscheinwerfer eingesetzt, so ist vorzugsweise die randseitige Einkoppelfläche, die weiter von der Längsachse des Fahrzeugs beabstandet ist, breiter als die innere randseitige Einkoppelfläche.Preferably, both edge-side coupling surfaces or edge pixels or side pixels of the at least one line are widened. Thus, the light image can have a comparatively high width on device-side, simple manner on both edge sides, wherein a high resolution is present in the center. It is conceivable that the marginal coupling surfaces in the direction of at least one row have a different width to each other. If the optic is used, for example, in the vehicle headlight, the edge-side coupling surface, which is spaced further from the longitudinal axis of the vehicle, is preferably wider than the inner edge-side coupling surface.
Das Fahrzeug, in dem die Optik (Primäroptik) mit einem Scheinwerfer einsetzbar ist, kann ein Luftfahrzeug oder ein wassergebundenes Fahrzeug oder ein landgebundenes Fahrzeug sein. Das landgebundene Fahrzeug kann ein Kraftfahrzeug oder ein Schienenfahrzeug oder ein Fahrrad sein. Besonders bevorzugt ist die Verwendung des Fahrzeugscheinwerfers in einem Lastkraftwagen oder Personenkraftwagen oder Kraftrad.The vehicle in which the optics (primary optics) can be used with a headlight can be an aircraft or a water-bound vehicle or a land-bound vehicle. The land-based vehicle may be a motor vehicle or a rail vehicle or a bicycle. Particularly preferred is the use of the vehicle headlight in a truck or passenger car or motorcycle.
In weiterer Ausgestaltung der Erfindung sind die Einkoppelflächen in einer Ebene gesehen, die sich in Richtung der zumindest einen Zeile und in Richtung der optischen Hauptachse der Optik erstreckt, konvex ausgebildet. Insbesondere haben die Einkoppelflächen in dieser Ebene eine Bogenform.In a further embodiment of the invention, the coupling surfaces are seen in a plane which extends in the direction of at least one row and in the direction of the optical main axis of the optics, convex. In particular, the coupling surfaces in this plane have an arc shape.
Des Weiteren können die Einkoppelflächen in einer Richtung quer zur zumindest eine Zeile und quer zur optischen Hauptachse länglich oder stegartig ausgestaltet sein. Sie können dabei jeweils einen Teil einer zylindrischen Mantelfläche bilden.Furthermore, the coupling surfaces can be designed to be elongated or web-like in a direction transverse to the at least one row and transversely to the main optical axis. They can each form part of a cylindrical lateral surface.
Vorzugsweise liegen die Einkoppelflächen aneinander an, womit ein Übergang der Einkoppelflächen im Lichtbild nicht oder kaum ersichtlich ist.Preferably, the coupling surfaces abut each other, whereby a transition of the coupling surfaces in the photograph is not or hardly visible.
Vorzugsweise sind die mittleren Einkoppelflächen gleich ausgestaltet, was zu einem gleichmäßigen Lichtbild im mittleren oder zentralen Bereich führt. Bei den mittleren oder zentralen Einkoppelflächen handelt es sich vorzugsweise um alle Einkoppelflächen ohne die randseitigen Einkoppelflächen. Scheitel der mittleren Einkoppelflächen liegen vorzugsweise in einer gemeinsamen Ebene, die sich beispielsweise quer zur optischen Hauptachse und in Richtung der zumindest einen Zeile erstreckt.Preferably, the middle coupling surfaces are designed the same, resulting in a uniform light image in the middle or central area. The middle or central coupling surfaces are preferably all coupling surfaces without the edge-side coupling surfaces. Vertexes of the middle coupling surfaces are preferably in a common plane which extends, for example, transversely to the main optical axis and in the direction of the at least one row.
Eine hohe Lichtbildqualität bei gleichzeitig hoher Wirtschaftlichkeit kann gegeben sein, wenn die Optik (Primäroptik) 6 bis 14, insbesondere 6 bis 12, Einkoppelflächen aufweist, die vorzugsweise für entsprechend 6 bis 14, insbesondere 6 bis 12, Strahlungsquellen vorgesehen sein können. Im Einsatz der Optik (Primäroptik) führt eine derartige Anzahl von Einkoppelflächen zu einem geringen Energieverbrauch, wenn eine entsprechende Anzahl von Strahlungsquellen eingesetzt wird, und zu einem Lichtbild mit einer hohen Auflösung.A high quality of light image with high cost-effectiveness can be given if the optics (primary optics) 6 to 14, in particular 6 to 12, coupling surfaces, which may preferably be provided for corresponding to 6 to 14, in particular 6 to 12, radiation sources. In the use of optics (primary optics), such a number of coupling surfaces leads to low energy consumption when a corresponding number of radiation sources are used, and to a high-resolution light image.
In weiterer Ausgestaltung der Erfindung erstreckt sich zumindest eine seitliche Einkoppelfläche ausgehend von der benachbarten Einkoppelfläche hin zu ihrem Scheitel mit einem ersten, insbesondere kurvenförmigen, Flächenabschnitt. Dieser kann zur optischen Hauptachse angestellt sein. Vom Scheitel kann sich dann ein zweiter, insbesondere kurvenförmiger, Flächenabschnitt weg erstrecken, der vorzugsweise zur optischen Hauptachse angestellt ist. Der zweite Flächenabschnitt kann in Richtung der Zeile gesehen breiter als der erste Flächenabschnitt sein. Des Weiteren ist vorzugsweise eine Tiefe des zweiten Flächenabschnitts in Richtung der optischen Hauptachse gemessen größer als eine Tiefe der mittleren Einkoppelflächen. Somit kann auf vorrichtungstechnisch einfache Weise eine verbreiterte Einkoppelfläche umgesetzt werden.In a further embodiment of the invention, at least one lateral coupling surface extends from the adjacent coupling surface towards its vertex with a first, in particular curved, area section. This can be made to the main optical axis. From the apex may then extend a second, in particular curved, surface portion away, which is preferably employed to the main optical axis. The second surface portion may be seen as wider in the direction of the line than the first surface portion. Furthermore, a depth of the second surface section in the direction of the main optical axis measured is preferably greater than a depth of the central coupling surfaces. Thus, a widened coupling surface can be implemented on device technology simple way.
Vorzugsweise ist die Auskoppelfläche der Optik (Primäroptik) asymmetrisch ausgestaltet, womit ein asymmetrisches Lichtbild ausbildbar ist, das äußerst vorteilhaft für einen Fahrzeugscheinwerfer ist. Die Auskoppelfläche ist insbesondere länglich ausgestaltet und erstreckt sich vorzugsweise quer zur optischen Hauptachse und in Richtung der zumindest einen Zeile. Die Auskoppelfläche kann umfangsseitig vier Eckbereiche haben. Zum Ausbilden der Asymmetrie ist vorrichtungstechnisch einfach zumindest ein Eckbereich oder sind eine Mehrzahl von Eckbereichen oder sind alle Eckbereich gekrümmt oder beschnitten oder abgerundet ausgestaltet. Diese Ausgestaltung des Eckbereichs oder der Eckbereiche führt des Weiteren dazu, dass unerwünschte Lichtreflexe unterbunden werden und eine Artefakt-Bildung in der Lichtverteilung verringert oder vermieden wird. Die Eckbereiche auf der einen Seite der Auskoppelfläche, in Richtung der zumindest einen Zeile gesehen, können hierbei einen kleineren Radius als die Eckbereiche der anderen Seite haben. Ist die Optik beispielsweise im Fahrzeugscheinwerfer eingebaut, so sind die Eckbereiche mit dem großen Radius vorzugsweise unten und die Eckbereiche mit dem kleinen Radius oben angeordnet. Durch die Spiegelung der Sekundärlinse wird der kleine Radius auf der Straße abgebildet.Preferably, the decoupling surface of the optics (primary optics) is designed asymmetrically, with which an asymmetrical light image can be formed, which is extremely advantageous for a vehicle headlight. The decoupling surface is in particular elongated and preferably extends transversely to the main optical axis and in the direction of the at least one row. The decoupling surface can have four corner areas on the circumference. To form the asymmetry, device technology is simply at least one corner region or are a plurality of corner regions or all corner regions are curved or trimmed or rounded. This configuration of the corner region or of the corner regions furthermore leads to the fact that unwanted light reflections are suppressed and artefact formation in the light distribution is reduced or avoided. The corner regions on the one side of the decoupling surface, as seen in the direction of the at least one line, can in this case have a smaller radius than the corner regions of the other side. Is the optics for example installed in the vehicle headlight, the corner areas with the large radius are preferably located below and the corner areas with the small radius at the top. By mirroring the secondary lens, the small radius is displayed on the road.
In weiterer Ausgestaltung der Erfindung hat die Optik (Primäroptik) zur einfachen Montage in Richtung der optischen Hauptachse gesehen zwischen den Einkoppelflächen und der Auskoppelfläche einen Radialbund. Sie wird somit von einem Radialbund umfasst, über den sie befestigt werden kann.In a further embodiment of the invention, the optics (primary optics) has a radial collar between the coupling surfaces and the decoupling surface for easy mounting in the direction of the main optical axis. It is thus covered by a radial collar over which it can be attached.
Zum einfachen Ausbilden einer Asymmetrie der Optik (Primäroptik) kann sich die optische Hauptachse in Richtung der Zeile gesehen zwischen zwei mittleren Einkoppelflächen erstrecken. Insbesondere ist die optische Hauptachse versetzt zur Mitte der Zeile angeordnet. Sind beispielsweise 7 Einkoppelflächen mit 5 mittleren Einkoppelflächen vorgesehen, so kann die optische Hauptachse beispielsweise zwischen der zentralen Einkoppelfläche und der zu dieser benachbarten Einkoppelfläche angeordnet sein.For easy formation of an asymmetry of the optics (primary optics), the main optical axis in the direction of the line can extend between two central coupling surfaces. In particular, the main optical axis is arranged offset from the center of the line. If, for example, 7 coupling surfaces with 5 central coupling surfaces are provided, then the main optical axis can be arranged, for example, between the central coupling surface and the coupling surface adjacent thereto.
In weiterer Ausgestaltung der Erfindung ist eine jeweilige mittlere Einkoppelfläche derart ausgestaltet, dass diese zum Ausleuchten eines Winkelbereichs eines Lichtbilds von kleiner oder gleich 3° einsetzbar ist. Der Winkelbereich ist hierbei vorzugsweise in einer Ebene gemessen, die in der optischen Hauptachse liegt und die sich parallel zur Erstreckungsrichtung der Zeile erstreckt. Im eingebauten Zustand der Optik (Primäroptik) in dem Scheinwerfer kann es sich hierbei um die Horizontalebene handeln. Die Winkelbereiche der Einkoppelfläche schließen sich im Wesentlichen aneinander an, womit ein homogenes Lichtbild ermöglicht ist.In a further embodiment of the invention, a respective average coupling surface is designed such that it can be used to illuminate an angular range of a light image of less than or equal to 3 °. The angular range here is preferably measured in a plane which lies in the main optical axis and which extends parallel to the direction of extension of the line. In the installed state of the optics (primary optics) in the headlight, this may be the horizontal plane. Close the angular ranges of the coupling surface essentially abutting each other, thus allowing a homogeneous light image.
Vorzugsweise ist die Optik (Primäroptik) des Weiteren derart ausgestaltet, dass ein ausgeleuchteter Winkelbereich in einer Ebene, in der die optische Hauptachse liegt und die sich parallel zur Erstreckungsrichtung der Zeile oder horizontal erstreckt zwischen +/- 20°, vorzugsweise zwischen +/- 40°, weiter vorzugsweise zwischen -20° und +12° liegt.Preferably, the optics (primary optics) are further configured such that an illuminated angle range in a plane in which the main optical axis lies and which extends parallel to the extension direction of the line or horizontally between +/- 20 °, preferably between +/- 40 °, more preferably between -20 ° and + 12 °.
Des Weiteren kann vorgesehen sein, dass die Optik (Primäroptik) derart ausgestaltet ist, dass diese zum Ausleuchten eines Winkelbereichs des Lichtbilds in einer Ebene, die sich parallel zur optischen Hauptachse und quer zur Erstreckungsrichtung der Zeile oder vertikal erstreckt, von 7° vorgesehen ist. Markiert die optische Hauptachse eine 0° Position, so kann sich der ausgeleuchtete Winkelbereich in dieser Ebene beispielsweise von -2° bis +5° erstrecken.Furthermore, provision may be made for the optics (primary optics) to be designed such that it illuminates an angular range of the light image in a plane which extends parallel to the main optical axis and transversely to the extension direction of the line or vertically, by 7 °. If the main optical axis marks a 0 ° position, then the illuminated angular range in this plane can extend, for example, from -2 ° to + 5 °.
Erfindungsgemäß ist eine Optik, insbesondere eine Sekundäroptik, die beispielsweise als Linse ausgestaltet ist, für einen Fahrzeugscheinwerfer vorgesehen. Diese kann eine Einkoppelfläche und eine Auskoppelfläche aufweisen. Mit Vorteil ist hierbei bei der Einkoppelfläche und/oder bei der Auskoppelfläche eine Struktur vorgesehen, mit der Übergange von zumindest zwei oder einem Teil der oder aller Strahlungsquellen geglättet oder verwischt oder "smoothed" sind. Hierdurch kann auf einfache Weise ein gleichmäßiges Lichtbild geschaffen werden.According to the invention, an optic, in particular a secondary optic, which is embodied for example as a lens, is provided for a vehicle headlight. This can have a coupling surface and a decoupling surface. Advantageously, in this case a structure is provided at the coupling-in surface and / or at the decoupling surface, with which transitions of at least two or some or all of the radiation sources are smoothed or blurred or "smoothed". This can be easily created a uniform photo.
Die Struktur der Optik (Sekundäroptik) ist beispielsweise durch Linien gebildet. Diese können sich im Parallelabstand zueinander erstrecken. Des Weiteren erstrecken sich die Linien vorzugsweise quer zur optischen Hauptachse und/oder quer zur Zeile der Strahlungsquellen-Matrix. Im eingebauten Zustand der Optik (Sekundäroptik), beispielsweise im Fahrzeugscheinwerfer, können sich die Linien in Vertikalrichtung erstrecken.The structure of the optics (secondary optics) is formed for example by lines. These can be in parallel distance extend to each other. Furthermore, the lines preferably extend transversely to the main optical axis and / or transversely to the line of the radiation source matrix. In the installed state of the optics (secondary optics), for example in the vehicle headlight, the lines can extend in the vertical direction.
Die Glättung bei einer jeweiligen Linie der Optik (Sekundäroptik) erfolgt in einem Winkelbereich im Lichtbild von 0,2° bis 3°, vorzugsweise von 0,2° bis 0,8°, wobei der Winkelbereich in einer Ebene gesehen ist, in der sich die optische Hauptachse erstreckt und die sich in Richtung der Zeile der Strahlungsquellen-Matrix oder im eingebauten Zustand in Horizontalrichtung erstreckt.The smoothing at a respective line of optics (secondary optics) takes place in an angle range in the light image of 0.2 ° to 3 °, preferably from 0.2 ° to 0.8 °, the angle range is seen in a plane in which the main optical axis extends and extends in the direction of the line of the radiation source matrix or in the installed state in the horizontal direction.
Vorzugsweise hat die Optik (Sekundäroptik) eine asymmetrische Einkoppelfläche und/oder eine asymmetrische Auskoppelfläche.The optics (secondary optics) preferably have an asymmetrical coupling-in surface and / or an asymmetrical coupling-out surface.
Die Auskoppelfläche der Optik (Sekundäroptik) und/oder die Einkoppelfläche der Optik (Sekundäroptik) kann einen Scheitel aufweisen, wobei sich vom Scheitel ein erster Flächenabschnitt und ein zweiter Flächenabschnitt weg erstrecken können. Der erste Flächenabschnitt ist vorzugsweise länger als der zweite Flächenabschnitt. Hierdurch kann auf einfache Weise eine asymmetrische Auskoppelfläche geschaffen werden. Die optische Hauptachse erstreckt sich vorzugsweise durch den oder die Scheitel. Des Weiteren kann die Auskoppelfläche und/oder die Einkoppelfläche konvex oder bogenförmig in einer Ebene gesehen ausgestaltet sein, die sich entlang der optischen Hauptachse erstreckt und die sich entlang der Zeile der Strahlungsquellen-Matrix oder die sich im eingebauten Zustand in Horizontalrichtung erstrecken kann.The coupling-out surface of the optics (secondary optics) and / or the coupling-in surface of the optics (secondary optics) can have a vertex, wherein a first surface section and a second surface section can extend away from the vertex. The first surface portion is preferably longer than the second surface portion. As a result, an asymmetrical decoupling surface can be created in a simple manner. The major optical axis preferably extends through the vertex (s). Furthermore, the decoupling surface and / or the coupling-in surface can be designed convex or arc-shaped in a plane which extends along the main optical axis and which extends along the line of the radiation source matrix or which can extend in the installed state in the horizontal direction.
Des Weiteren ist denkbar, dass die Optik (Primäroptik, Sekundäroptik) aus Silikon besteht, was zu einem Gewichtsvorteil führt. Des Weiteren handelt es sich bei der Optik (Primäroptik, Sekundäroptik) beispielsweise um eine Linse. Es ist denkbar, die Optik (Primäroptik, Sekundäroptik) beim Einsatz im Fahrzeugscheinwerfer für eine Fernlichtfunktion vorzusehen.Furthermore, it is conceivable that the optics (primary optics, secondary optics) consists of silicone, which leads to a weight advantage. Furthermore, optics (primary optics, secondary optics) are, for example, a lens. It is conceivable to provide the optics (primary optics, secondary optics) when used in the vehicle headlight for a high beam function.
Erfindungsgemäß ist ein Modul mit einer Strahlungsquellen-Matrix und mit einer Optik (Primäroptik) gemäß einem oder mehrerer der vorhergehenden Aspekte vorgesehen. Diese Lösung hat den Vorteil, dass bei Bedarf mit geringem vorrichtungstechnischen Aufwand einfach mehrere Module kombiniert und der Lichtbilder überlagert werden können. Ist beispielsweise ein Modul mit 6 bis 12 matrixartig angeordneten Strahlungsquellen vorgesehen, so kann eine Kombination von zwei Modulen zu 12 bis 24 Pixeln oder bei der Überlagerung von drei Modulen zu 18 bis 36 Pixel führen.According to the invention, a module with a radiation source matrix and with an optics (primary optics) according to one or more of the preceding aspects is provided. This solution has the advantage that when needed with little device complexity simply combined several modules and the photos can be superimposed. If, for example, a module with 6 to 12 radiation sources arranged in the form of a matrix is provided, then a combination of two modules can lead to 12 to 24 pixels or, in the superposition of three modules, to 18 to 36 pixels.
Die Strahlungsquellen-Matrix ist beispielsweise aus Licht emittierenden Dioden (LEDs) gebildet. Eine LED oder Leuchtdiode kann in Form mindestens einer einzeln gehäusten LED oder in Form mindestens eines LED-Chips, der eine oder mehrere Leuchtdioden aufweist, vorliegen. Es können mehrere LED-Chips auf einem gemeinsamen Substrat ("Submount") montiert sein und eine LED bilden oder einzeln oder gemeinsam beispielsweise auf einer Platine (z.B. FR4, Metallkernplatine, etc.) befestigt sein ("CoB" = Chip on Board). Die mindestens eine LED kann mit mindestens einer eigenen und/oder gemeinsamen Optik zur Strahlführung ausgerüstet sein, beispielsweise mit mindestens einer Fresnel-Linse oder einem Kollimator. Anstelle oder zusätzlich zu anorganischen LEDs, beispielsweise auf Basis von AlInGaN oder InGaN oder AlIn-GaP, sind allgemein auch organische LEDs (OLEDs, z.B. Polymer-OLEDs) einsetzbar. Die LED-Chips können direkt emittierend sein oder einen vorgelagerten Leuchtstoff aufweisen. Alternativ kann die LED eine Laserdiode oder eine Laserdiodenanordnung sein. Denkbar ist auch eine OLED-Leuchtschicht oder mehrere OLED-Leuchtschichten oder einen OLED-Leuchtbereich vorzusehen. Die Emissionswellenlängen der LED können im ultravioletten, sichtbaren oder infraroten Spektralbereich liegen. Die LEDs können zusätzlich mit einem eigenen Konverter ausgestattet sein. Bevorzugt emittieren die LED-Chips weißes Licht im genormten ECE-Weißfeld der Automobilindustrie, beispielsweise realisiert durch einen blauen Emitter und einen gelb/grünen Konverter.The radiation source matrix is formed, for example, from light-emitting diodes (LEDs). An LED or light emitting diode may be in the form of at least one individually packaged LED or in the form of at least one LED chip having one or more light emitting diodes. Several LED chips can be mounted on a common substrate ("submount") and form an LED or be attached individually or jointly to, for example, a circuit board (eg FR4, metal-core board, etc.) ("CoB" = chip on board). The at least one LED can be equipped with at least one own and / or common optics for beam guidance, for example with at least one Fresnel lens or a collimator. Instead of or in addition to inorganic LEDs, for example based on AlInGaN or InGaN or AlIn-GaP, it is generally also possible to use organic LEDs (OLEDs, eg polymer OLEDs). The LED chips can be directly emitting or have an upstream phosphor. Alternatively, the LED may be a laser diode or a laser diode array. It is also conceivable to provide an OLED luminescent layer or a plurality of OLED luminescent layers or an OLED luminescent region. The emission wavelengths of the LED can be in the ultraviolet, visible or infrared spectral range. The LEDs can additionally be equipped with their own converter. Preferably, the LED chips emit white light in the standardized ECE white field of the automotive industry, for example realized by a blue emitter and a yellow / green converter.
Vorzugsweise hat das Modul eine Platte oder Leiterplatte oder Metal Core Printed Circuit Board (MCPCB) oder ein AL MCPCB, an der die Strahlungsquellen in einer oder mehreren Zeilen befestigt sind. Des Weiteren kann vorgesehen sein, dass an der Platte die Optik (Primäroptik), insbesondere über einen Optikhalter, fixiert ist. Somit kann auf vorrichtungstechnisch äußerst einfache Weise ein kompaktes Modul ausgestaltet werden. Der Optikhalter ist beispielsweise einfach durch Stege gebildet. Die Stege wiederum können einen Rahmen bilden, der die Strahlungsquellen umfasst. Die Optik (Primäroptik) kann dann vorzugsweise über ihren Radialbund im Optikhalter befestigt sein.Preferably, the module has a plate or printed circuit board or Metal Core Printed Circuit Board (MCPCB) or an AL MCPCB to which the radiation sources are attached in one or more rows. Furthermore, it can be provided that the optics (primary optics), in particular via an optic holder, are fixed to the plate. Thus, a compact module can be configured on device technology extremely simple way. The optical holder is for example simply formed by webs. The webs in turn may form a frame comprising the radiation sources. The optics (primary optics) can then preferably be attached via their radial collar in the optics holder.
Zur elektrischen Kontaktierung und/oder Steuerung der Strahlungsquellen-Matrix kann an der Platte des Weiteren ein Anschluss vorgesehen sein. Bei diesem handelt es sich beispielsweise um einen Stecker oder um eine Buchse. Des Weiteren kann an der Platte ein sogenannter "Binning-Resistor" oder Container-Widerstand vorgesehen sein. Außerdem ist denkbar, einen NTC (Negative Temperature Coefficient) Widerstand zur Vermeidung einer Überhitzung des Moduls auf der Platte anzuordnen. Des Weiteren kann eine Ansteuerelektronik auf der Platte angebracht sein.For electrical contacting and / or control of the radiation source matrix, a connection can furthermore be provided on the plate. This is, for example, a plug or a socket. Furthermore, a so-called "binning resistor" or container resistance can be provided on the plate. In addition, it is conceivable to arrange a NTC (Negative Temperature Coefficient) resistor to prevent overheating of the module on the plate. Furthermore, a drive electronics can be mounted on the plate.
Erfindungsgemäß ist eine Anordnung mit zumindest zwei Gruppen oder Baugruppen vorgesehen. Eine jeweilige Gruppe weist hierbei eine Strahlungsquellen-Matrix auf, der jeweils eine Optik (Primäroptik) gemäß einem oder mehrerer der vorhergehenden Aspekte nachgeschaltet ist. Des Weiteren hat eine jeweilige Gruppe eine Optik (Sekundäroptik), die insbesondere gemäß einem oder mehrerer der vorhergehenden Aspekte ausgebildet ist, und die der Primäroptik nachgeschaltet ist. Vorzugsweise überlagern sich die Lichtbilder der Gruppen.According to the invention, an arrangement with at least two groups or assemblies is provided. In this case, a respective group has a radiation source matrix, which is followed in each case by an optical system (primary optics) according to one or more of the preceding aspects. Furthermore, a respective group has an optic (secondary optics), which is designed in particular according to one or more of the preceding aspects, and which is connected downstream of the primary optics. Preferably, the light images of the groups overlap.
Diese Lösung hat den Vorteil, dass mit der Anordnung auf vorrichtungstechnisch einfache Weise eine Auflösung des abgestrahlten Lichtbilds der Gruppen erhöht werden kann. Bei einer jeweiligen Gruppe kann die jeweilige Strahlungsquellen-Matrix mit den zugehörigen Optiken (Primäroptiken) jeweils als Modul gemäß einem oder mehrerer der vorhergehenden Aspekte ausgebildet sein. Durch Erhöhung oder Erniedrigung der Anzahl der Gruppen kann somit vorrichtungstechnisch einfach die Auflösung des abgestrahlten Lichtbilds der Gruppen eingestellt werden.This solution has the advantage that a resolution of the emitted light image of the groups can be increased with the arrangement on device-technically simple manner. In a respective group, the respective radiation source matrix with the associated optics (primary optics) can each be designed as a module according to one or more of the preceding aspects. By increasing or decreasing the number of groups can thus device technology simply the resolution of the emitted light image of the groups can be adjusted.
In weiterer Ausgestaltung der Erfindung kann bei der Anordnung vorgesehen sein, dass die optische Hauptachse einer jeweiligen Gruppe parallel versetzt zur optischen Hauptachse der jeweiligen anderen Gruppe ist. Die optischen Hauptachsen können hierbei in einer Ebene liegen, die sich parallel zur Erstreckungsrichtung der Zeile der Strahlungsquellen-Matrizen erstreckt oder die sich horizontal erstreckt, insbesondere im eingebauten Zustand eines Fahrzeugscheinwerfers.In a further embodiment of the invention may be provided in the arrangement that the main optical axis of a respective group is offset parallel to the main optical axis of the respective other group. The main optical axes may in this case lie in a plane which extends parallel to the direction of extension of the line of the radiation source matrices or which extends horizontally, in particular in the installed state of a vehicle headlight.
Vorzugsweise sind die Gruppen gleich ausgestaltet.Preferably, the groups are the same.
Ein Abstand der optischen Hauptachsen der Gruppen ist vorzugsweise derart gewählt, dass sich die ausgeleuchteten Winkelbereiche der mittleren Einkoppelflächen gleichmäßig überlappen. Dies kann zu einer Auflösung führen, die durch folgende Formel gegeben ist: "Winkelbereich einer mittleren Einkoppelfläche / Anzahl der Gruppen". Beträgt der ausgeleuchtete Winkelbereich (Pitch) einer mittleren Einkoppelfläche beispielsweise 3°, so kann bei gleichmäßiger Überlagerung zweier Gruppen eine Auflösung von 1,5° im Bereich der mittleren Einkoppelflächen erzielt werden. Zwei Gruppen können sich somit mit einem halben Pitch überlagern.A distance of the optical main axes of the groups is preferably selected such that the illuminated angle ranges of the central coupling surfaces overlap uniformly. This can lead to a resolution which is given by the following formula: "Angle range of a middle coupling surface / number of groups". If the illuminated angle range (pitch) of a central coupling surface is, for example, 3 °, a resolution of 1.5 ° in the region of the middle coupling surfaces can be achieved with uniform superposition of two groups. Two groups can thus overlap with half a pitch.
Erfindungsgemäß ist ein Scheinwerfer, insbesondere für ein Fahrzeug, mit einem Modul oder einer Anordnung gemäß einem oder mehrerer der vorhergehenden Aspekte vorgesehen.According to the invention, a headlight, in particular for a vehicle, is provided with a module or an arrangement according to one or more of the preceding aspects.
Des Weiteren kann erfindungsgemäß ein Scheinwerfersystem für ein Fahrzeug vorgesehen sein, dass einen linken und einen rechten Scheinwerfer gemäß dem vorhergehenden Aspekt hat. Die ausgeleuchteten Winkelbereiche der mittleren Einkoppelflächen des Moduls oder der Anordnung des linken Scheinwerfers können dann mit den ausgeleuchteten Winkelbereichen der mittleren Einkoppelflächen des Moduls oder der Anordnung des rechten Scheinwerfers überlappt sein. Die Überlappung erfolgt beispielsweise deckungsgleich oder die Überlappung kann durch einen Versatz erfolgen. Mit zwei Scheinwerfern ist es nun möglich den zentralen Bereich Deckungsgleich zu überlagern, wobei eine asymmetrische Lichtverteilung links und rechts an das überlagerte Lichtbild anschließt. Ist ein Versatz vorgesehen, so kann der überlagerte Bereich beider Scheinwerfer beispielsweise um einen bestimmten Anteil des Pitches versetzt sein, wie beispielsweise um einen viertel Pitch. Die Auflösung kann hierdurch weiter erhöht werden.Furthermore, according to the invention, a headlamp system for a vehicle may be provided which has a left and a right headlamp according to the preceding aspect. The illuminated angle ranges of the central coupling surfaces of the module or the arrangement of the left headlamp can then be overlapped with the illuminated angle ranges of the central coupling surfaces of the module or the arrangement of the right headlamp. The overlap, for example, congruent or overlap can be done by an offset. With two headlamps it is now possible to overlap the central area with the same coverage, with an asymmetrical light distribution on the left and right of the superimposed light image. If an offset is provided, the superimposed area of both headlights can be offset, for example, by a certain proportion of the pitch, for example by a quarter pitch. The resolution can be further increased thereby.
Im Folgenden soll die Erfindung anhand von Ausführungsbeispielen näher erläutert werden. Die Figuren zeigen:
- Fig. 1a und 1b
- unterschiedliche Ansichten einer Optik (Primäroptik) gemäß einem Ausführungsbeispiel,
- Fig. 2
- in einer Draufsicht eine Gruppe, die eine Strahlungsquellen-Matrix, die Optik (Primäroptik) aus
Figur 1a und 1b und eine weitere Optik (Sekundäroptik) aufweist, - Fig. 3
- schematisch eine Anordnung von zwei Gruppen aus
Figur 2 zusammen mit einem gemeinsam abgestrahlten Lichtbild, - Fig. 4
- in einer perspektivischen Darstellung ein Modul gemäß einem Ausführungsbeispiel,
- Fig. 5a
- und 5b verschiedene Ansichten von zwei Gruppen gemäß einem Ausführungsbeispiel,
- Fig. 6
- schematisch zwei Strahlungsquellen-Matrizen,
- Fig. 7
- unterschiedliche Auflösungen über einen Winkelbereich eines von der Anordnung aus
Figur 3 abgestrahlten Lichtbilds, - Fig. 8
- eine Lichtstärkeverteilung eines Lichtbilds, das von der Anordnung aus
Figur 3 abgestrahlt ist und - Fig. 9
- verschiedene Lichtbilder, die von der Anordnung gemäß
Figur 3 abgestrahlt sind, wobei jeweils eine andere Anzahl von Strahlungsquellen eingeschaltet ist.
- Fig. 1a and 1b
- different views of optics (primary optics) according to an embodiment,
- Fig. 2
- in a plan view, a group containing a radiation source matrix, the optics (primary optics)
FIGS. 1a and 1b and another optics (secondary optics), - Fig. 3
- schematically an arrangement of two groups
FIG. 2 together with a jointly emitted photo, - Fig. 4
- in a perspective view of a module according to an embodiment,
- Fig. 5a
- and FIG. 5b different views of two groups according to an embodiment,
- Fig. 6
- schematically two radiation source matrices,
- Fig. 7
- different resolutions over an angular range of one from the array
FIG. 3 radiated light picture, - Fig. 8
- a light intensity distribution of a light image, the of the arrangement
FIG. 3 is radiated and - Fig. 9
- different photographs, according to the arrangement according to
FIG. 3 are emitted, each with a different number of radiation sources is turned on.
Gemäß
In
In
Gemäß
Gemäß
Gemäß
Gemäß
Hierbei ist erkennbar, dass für eine jeweilige Leiterplatte 68 ein Binning-Widerstand 76 und ein NTC-Widerstand 78 vorgesehen sind. Zum Steuern der einzelnen LEDs ist ein Steuermodul (LED Driver Module (LDM)) 80 vorgesehen.It can be seen here that a binning
Gemäß
Gemäß
Offenbart ist eine Primäroptik mit einer Auskoppelfläche und einer Vielzahl von Einkoppelflächen, die gegenüberliegend einer Strahlungsquellen-Matrix anordbar sind. Die zeilenförmig angeordneten Einkoppelflächen weisen einerseits eine endseitige Einkoppelfläche und andererseits eine weitere endseitige Einkoppelfläche auf. Zumindest eine der endseitigen Einkoppelflächen ist verbreitert im Vergleich zu einer jeweiligen mittleren Einkoppelfläche ausgebildet.
Claims (14)
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DE102016223972.4A DE102016223972A1 (en) | 2016-12-01 | 2016-12-01 | PRIMARY, SECONDARY, MODULE, ARRANGEMENT, VEHICLE HEADLIGHTS AND HEADLAMP SYSTEM |
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EP (1) | EP3330597B1 (en) |
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CN108131636B (en) | 2021-12-21 |
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CN108131636A (en) | 2018-06-08 |
US20180156406A1 (en) | 2018-06-07 |
US10962187B2 (en) | 2021-03-30 |
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