EP3412963A1 - Transparent component arrangement of a light module and light module comprising such a transparent component arrangement - Google Patents
Transparent component arrangement of a light module and light module comprising such a transparent component arrangement Download PDFInfo
- Publication number
- EP3412963A1 EP3412963A1 EP18177056.1A EP18177056A EP3412963A1 EP 3412963 A1 EP3412963 A1 EP 3412963A1 EP 18177056 A EP18177056 A EP 18177056A EP 3412963 A1 EP3412963 A1 EP 3412963A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- section
- exit surface
- reflection surfaces
- transparent component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004065 semiconductor Substances 0.000 claims 1
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
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- 230000008901 benefit Effects 0.000 description 5
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- 229920003023 plastic Polymers 0.000 description 5
- 238000005286 illumination Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
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- 230000000644 propagated effect Effects 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/31—Optical layout thereof
- F21S43/315—Optical layout thereof using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
Definitions
- At least some of the reflective facets are each assigned a specific subarea of the light exit surface onto which these facets redirect light.
- the invention also relates to a luminaire module of a motor vehicle light.
- the luminaire module comprises a light source for emitting light in a main emission direction and a transparent component arrangement for bundling and redistributing the light emitted by the light source onto portions of a light exit surface of the luminaire module to produce a long light distribution with a greater horizontal than vertical extent.
- An elongate light exit surface has a significantly greater longitudinal extent than height.
- Such lights are used, for example, in the front region of a motor vehicle for generating a daytime running light, a position or parking light or a flashing light or in the rear of a motor vehicle for generating a tail light, a brake light, a flashing light or a reversing light. From the prior art, various possibilities are known to realize such a long light exit surface. Important aspects for the design of such lights are u.a. a cost-effective production and installation of the lamp and the most homogeneous possible illumination of the elongated light exit surface of the lamp.
- the known component arrangement is used to generate a headlight function, for example.
- the exit surfaces of the light guides do not form a plane light exit surface.
- the parallel course of the light beams of the beam to each other during the deflection in the redistribution section is not maintained due to the complex progressions of the individual optical fibers, so that a homogeneous illumination of the exit surfaces of the individual optical fibers and thus the entire light exit surface can be realized with an additional effort if necessary.
- a transparent component arrangement for bundling and redistributing the light emitted by a light source on subregions of a light exit surface of the luminaire module to produce a elongated light distribution with a greater horizontal than vertical extent known.
- light emitted by a light source in a main emission direction having a lambertian emission characteristic is coupled via a coupling-in section into the component arrangement and bundled by means of a bundling section to form a bundle of rays with mutually parallel light beams.
- the bundling section is realized in the form of a transparent solid having a circular cross-section with respect to the main emission direction of the light source, so that it produces a bundle of rays with light rays running parallel to one another.
- This beam passes through an annular exit surface of the bundling portion of this, so that the beam has a circular ring shape.
- the exit surface is subdivided into a number of equally sized facet-like segments, each facet diverting a portion (segment) of the radiation beam by refraction on the facet onto a faceted light entry surface of an elongate transparent luminous element.
- the longitudinal extent of the filament is significantly greater than its height.
- the facets of the entrance surface are arranged side by side on a first longitudinal side of the luminous element.
- the opposite longitudinal side of the luminous element forms the light exit surface of the luminaire module.
- the light rays of the different subareas of the radiation beam which fall on the facets of the entrance surface of the luminous body pass through the luminous body and strike different subregions of the light exit surface.
- the light emerging from the luminous element via the different subregions of the light exit surface then generates an elongated light distribution.
- the redistribution section thus consists of a plurality of facets which divert partial areas of the beam bundle by refraction onto the different subareas of the light exit area of the luminaire module.
- the known transparent component arrangement has the disadvantage that both the facets on the exit surface of the bundling section and the facets of the entrance surface of the transparent filament must be individually designed very expensive, so that the partial regions of the beam from the circular ring segment-shaped facets of the exit surface of the bundling section on the over the distributed longitudinal extent of the entrance surface of the luminous element arranged rectangular facets meet and the subareas of the light exit surface of the lamp module are illuminated as homogeneously as possible.
- the present invention has the object, to design a transparent component assembly and a lamp module of the type mentioned and further, that a simple and cost-effective production and assembly, as homogeneous as possible illumination of the light exit surface and a light exit surface with a particularly low height compared to their longitudinal extent can be achieved.
- the redistribution section deflect the incident light on them by means of reflection.
- the redistribution section is designed to direct partial regions of the radiation beam through the individual reflective facets to the respective subregions of the light exit surface assigned to them.
- the subregions of the radiation beam result from a subdivision of a cross section of the radiation beam by means of horizontal and / or vertical sectional planes which run parallel to the light beams of the radiation beam running parallel to one another and parallel or perpendicular to one another. During the entire deflection of the light, the parallel course of the light beams of the beam to each other in the redistribution section remains.
- the light source is preferably designed as a half-space radiator and comprises, for example, at least one light-emitting diode (LED).
- the light source preferably emits light having an approximately Lambertian radiation characteristic in a main emission direction into a 180 ° half-space.
- the bundle of rays bundled by the bundling section preferably has a circular cross-section.
- the beam has a rectangular shape, for example. With rounded corners.
- the decisive factor is that the light beams emitted by the light source with a relatively large emission angle are bundled by the bundling section into a beam having substantially parallel light beams, which in the context of the present invention in a particularly simple but efficient manner while maintaining the parallelism of the light beams can be deflected each other by the redistribution section in the corresponding portions of the light exit surface of the lamp module.
- the individual sections of the transparent component arrangement are designed as transparent solids. They consist of a transparent material, in particular PC, PMMA or PMMI.
- the coupling and the bundling section are preferably formed as a single integral component.
- this component is designed in the form of a so-called intent optical or TIR (total internal reflection) optics.
- An attachment optics has a coupling-in section with a recess and a plurality of light entry surfaces in the region of this depression.
- the light source emits light mainly in this depression and on the entrance surfaces.
- a bottom of the depression extends at least partially perpendicular to a main emission direction of the light source and forms a first light entry surface.
- the attachment optics on a first light exit surface On one of the first entrance surface opposite side, the attachment optics on a first light exit surface.
- the first entrance surface and / or the first exit surface may be curved in the manner of a lens. Light rays which enter via the first entrance surface in the optical attachment and exit via the first exit surface of this are refracted by refraction, in particular collimated.
- an attachment optics comprises at least one second light entry surface which is preferably aligned parallel or with a slight inclination obliquely to the main emission direction of the light source.
- On this entrance surface meet from the light source obliquely to the main emission direction emitted light rays and enter laterally into the attachment optics. There they meet first on totally reflecting interfaces of the attachment optics and are deflected by these on at least a second light exit surface of the attachment optics. This exit surface extends at least over part of the circumference of the first exit surface. Via the second exit surface, the light rays reflected by the boundary surfaces emerge parallel to the light rays emerging from the attachment optics through the first exit surface. Light rays which enter the optical attachment via the second entrance surface and emerge from it via the second exit surface are bundled by refraction and total reflection (TIR), in particular collimated.
- TIR total reflection
- a lens in particular a plano-convex lens, for focusing the light beams emitted by the light source.
- An advantage of the present invention is that the transparent component arrangement is particularly simple and thus easy and inexpensive to produce and that nevertheless the parallel course of the light beams of the beam to each other during the entire deflection in the redistribution section is maintained. As a result, the individual subareas of the light exit surface of the luminaire module can be illuminated in a particularly homogeneous manner.
- the coupling, the bundling and the redistribution section are formed as a single integral component.
- the entire transparent component assembly is as a solid of a transparent Plastic material, in particular PC, PMMA or PMMI trained. This has great advantages in terms of low-cost manufacturing, since the entire transparent component assembly can be manufactured in one manufacturing step.
- the component arrangement can be produced, for example, by means of an injection molding process.
- the coupling-in section has a rotationally symmetrical shape, wherein an axis of rotation is congruent with a main emission direction of the light through the light source.
- the bundling section has a rotationally symmetrical shape, wherein an axis of rotation is congruent with a main emission direction of the light through the light source.
- the redistribution section of the transparent component arrangement preferably has a longitudinal extent along the light exit surface and perpendicular to a main emission direction of the light source.
- the length of the redistribution section corresponds approximately to the length of the light exit surface with the juxtaposed partial regions, to which the deflected light beams of the partial regions of the radiation beam are deflected.
- optically active structures for example, any lenses, cylindrical optics, cushion optics, scattering optics, prisms, etc.
- the reflective facets of the redistribution section deflect light incident on them by means of total reflection.
- the facets can thus be designed as totally reflecting boundary surfaces of the redistribution section designed as a transparent solid. These surfaces can be manufactured as part of an injection molding process with high accuracy. Since the redistribution section of the transparent component arrangement has a very small height, which is in the range of a few millimeters (eg 2.5 mm), minimal material shrinkage occurs during curing of the sprayed plastic part, so that the transparent component arrangement and in particular the reflective facets of the Redistribution section can be produced with a particularly high accuracy.
- the reflective facets of the redistribution section comprise first reflection surfaces, second reflection surfaces and third reflection surfaces.
- the first reflection surfaces are configured to deflect the light beams at least from some of the partial regions of the radiation beam in the direction of the second reflection surfaces, perpendicular to a main emission direction of the light source and along a longitudinal extension of the redistribution section.
- the first reflection surfaces are arranged and aligned in the redistribution section in that the light beams which have entered the redistribution section at least of at least some of the subareas of the radiation beam impinge directly on the first reflection surfaces and are deflected by them.
- the second reflection surfaces are configured to redirect light beams deflected by the first reflection surfaces in the direction of the corresponding third reflection surfaces, parallel to the main emission direction of the light source and perpendicular to the direction of the light rays deflected by the first reflection surfaces.
- the third reflection surfaces are formed, light beams deflected by the second reflection surfaces in the direction of the corresponding portions of the light exit surface, perpendicular to the main emission of the light source, perpendicular to the direction of the deflected from the first reflection surfaces of light rays and perpendicular to the direction of the deflected by the second reflection surfaces light rays redirect.
- the light beams deflected by the first reflection surfaces of the various subregions of the radiation beam can run in the redistribution section at the same height but (seen from above) next to one another or (viewed from the front) in succession. This allows a particularly low overall height of the redistribution section in the range of only a few millimeters.
- the light beams of a portion of the beam, the light of the redistribution section deflects to a central portion of the light exit surface, directly on at least one of the third reflection surfaces without hitting one of the first reflection surfaces or one of the second reflection surfaces.
- the light rays of the subregion of the Beams which are deflected onto the central subregion of the light exit surface are therefore not deflected at first reflection surfaces along the longitudinal extent of the redistribution section and perpendicular to the main emission direction of the light source, in order then to encounter second reflection surfaces, which then redirect them in the direction of the third reflection surface.
- All other light beams which are thus not deflected to the central portion of the light exit surface, must first be propagated by the first reflection surfaces more or less along the longitudinal extent of the redistribution section in this before they hit the second reflection surfaces, which then in the direction of Redirecting third reflection surface, which then deflect the light rays in the direction of the corresponding decentralized subregions of the light exit surface.
- the second reflection surfaces which redirect the light beams propagating in the redistribution section in the direction of the third reflection surfaces, have a different distance from the first reflection surfaces, corresponding to a spacing of the corresponding subareas of the light exit surface to which the respective second reflection surfaces are assigned third reflection surfaces deflect the light rays, to the central portion of the light exit surface.
- the third reflection surfaces which redirect the light beams coming from the respectively associated second reflection surfaces in the direction of the corresponding decentrally arranged subareas of the light exit surface, have different distances from the first reflection surfaces, corresponding to a distance of the corresponding subregions of the light exit surface. to which the second reflection surfaces respectively associated third reflection surfaces deflect the light rays to the central portion of the light exit surface.
- a light beam which strikes approximately at the center of the first and second reflection surfaces, on its way from a first to a second reflection surface travels a distance which is approximately equal to the distance of the center of the partial region of the light exit surface on which the light source Light beam is deflected via the second and third reflection surfaces, corresponds to the center of the central portion of the light exit surface.
- the redistribution section can be designed as a flat plate, wherein the light exit surface then has a straight longitudinal extent.
- the preferably flat surfaces and have an inclination of 45 ° with respect to the light rays impinging on them, so that the incident on the reflection surfaces light rays are deflected by the reflection surfaces in each case by 90 °.
- the redistribution section it would also be conceivable for the redistribution section to be configured bent around an axis parallel to the direction of the light beams deflected by the third reflection surfaces in the direction of the corresponding subregions of the light exit surface.
- a lighting module of the aforementioned Solved type having a transparent component assembly according to the invention is also achieved by a lighting module of the aforementioned Solved type having a transparent component assembly according to the invention.
- a luminaire module can be used to produce an elongated light distribution with a greater horizontal than vertical extent.
- the light distribution is used in particular for the realization of any lighting function, for example a daytime running light, a flashing light, a position or parking light, a tail light, a brake light or a reversing light.
- light sources are used that emit light of a specific color (eg white, yellow, red).
- light sources which can each emit light of different color (eg so-called multicolour or RGB LEDs), so that they emit light of a specific color as a function of a corresponding activation of the light source in order to realize a desired light distribution ,
- different light functions eg daytime running light and flashing light
- FIG. 8 is a lighting device of a motor vehicle in the form of a headlamp designated in its entirety by the reference numeral 1.
- the lighting device 1 could also be a tail light of a motor vehicle.
- the headlight 1 is arranged and fastened in the front region of the bodywork of a motor vehicle.
- an inventive lamp module of a motor vehicle light is arranged.
- the lamp with the lamp module can also be arranged separately from the headlight 1 as an independent component with its own housing front, rear or side in or on a motor vehicle. It would be conceivable, for example, to arrange the luminaire as a raised third brake light in or on a boot lid or behind a rear window of a motor vehicle.
- the lamp could be arranged as a retrofittable daytime running light in the area of a front spoiler or on a bumper of the motor vehicle.
- the headlight 1 a housing 2, which is preferably made of plastic.
- the housing 2 has a light exit opening 4, which is closed by means of a transparent cover 5.
- the cover 5 is made of glass or plastic.
- Optically effective elements eg prisms or cylindrical lenses
- the cover pane 5 can be arranged on the cover pane 5 at least in regions in order to scatter the light passing through (so-called diffusion plate). But it is also conceivable that the cover 5 is formed without such optically active elements (so-called clear disc).
- a light module 6 is arranged inside the housing 2.
- the light module 6 can serve to generate any desired headlight function or a part thereof.
- the light module 6 can be used to produce a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution or a part thereof.
- a further light module 7 can be arranged in the housing 2. This serves, for example, to generate another headlight function. It would also be conceivable that the light modules 6, 7 together generate the intended headlight function.
- the light module 7 could produce a low beam basic light distribution with a relatively wide spread and a horizontal cut-off. The light module 6 could then produce a low-beam spotlight distribution which is relatively strongly concentrated in comparison to the low beam basic light distribution of the light module 7 and has an asymmetrical light-dark boundary at the top.
- the asymmetric light-dark border has a higher profile on the own traffic side than on the oncoming traffic side.
- a superposition of the basic light distribution and the spotlight distribution results in a conventional low-beam distribution.
- further light modules for realizing other headlight functions are arranged in the headlight housing 2.
- At least one motor vehicle light with a luminaire module 8 according to the invention is arranged in the housing 2.
- the luminaire module 8 serves to generate at least one arbitrary luminaire function, for example, a flashing light, a position light, a daytime running light, etc.
- the luminaire module 8 according to the invention will be described below with reference to the FIGS. 1 to 7 explained in more detail.
- the luminaire module 8 is in different perspective views in the FIGS. 4 and 5 shown. It comprises a light source 10, which is formed, for example, as a half-space radiator, in particular as a light-emitting diode (LED).
- the light-emitting diode 10 comprises at least one LED chip which emits light in a main emission direction 11, preferably with a lambertian emission characteristic, into a 180 ° half-space.
- the luminaire module 8 comprises a transparent component arrangement, which is designated in its entirety by the reference numeral 12.
- This in turn comprises a coupling-in section 13, which is designed to couple the light emitted by the light source 10 in the main emission direction 11 into the component arrangement 12.
- the coupling-in section 13 preferably has a rotationally symmetrical shape, wherein an axis of rotation is preferably congruent with the main emission direction 11 of the light through the light source 10.
- the component arrangement 12 has a bundling section 14, which is designed to bundle the coupled-in light into a bundle of rays 19 with light beams running parallel to one another.
- the bundle of rays 19 bundled by the bundling section 14 preferably has a circular cross-section (cf. FIG. 1 ).
- the bundling section 14 may have a rotationally symmetrical shape, wherein a rotation axis preferably coincides with the Main emission 11 of the light through the light source 10 is.
- the bundling section 14 is, for example, together with the coupling-in section 13, part of a TIR attachment optics (cf. FIG. 2 ).
- intent optics but could also be a lens, in particular a plano-convex lens, are used.
- the coupling portion 13 and the bundling portion 14 are formed as a single integral member.
- this component in the form of a so-called.
- the attachment optics 13, 14 has a coupling-in section 13 with a recess 13a and a plurality of light entry surfaces 13b, 13c in the region of this depression 13a.
- the light source 10 radiates its light mainly into this depression 13a and onto the entry surfaces 13b, 13c.
- a bottom of the depression 13a extends at least regionally perpendicular to the main emission direction 11 of the light source 10 and forms a first light entry surface 13b.
- the attachment optics 13, 14 on a first light exit surface 14b On one of the first entrance surface 13b opposite side, the attachment optics 13, 14 on a first light exit surface 14b.
- the first entrance surface 13b and / or the first exit surface 14b may be curved in the manner of a lens. Light rays which enter the intent optics 13, 14 via the first entrance surface 13b and emerge therefrom via the first exit surface 14b are focused by refraction, in particular collimated.
- an attachment optics 13, 14 comprises at least one second light entry surface 13c, which is formed by a wall of the attachment optics 13, 14 which limits the cylinder or frusto-conical recess 13a.
- this entrance surface 13c meet from the light source 10 obliquely to the main emission 11 emitted light rays and enter laterally into the attachment optics 13, 14 a. There, they first encounter totally reflecting boundary surfaces 14a of the attachment optics 13, 14 and are deflected by these onto at least one second light exit surface 14c of the attachment optics 13, 14. This exit surface 14c extends at least a part of the circumference of the first exit surface 14b.
- the light beams reflected by the boundary surfaces 14a emerge from the attachment optics 13, 14 parallel to the light beams exiting via the first exit surface 14b.
- Light rays which enter the intent optics 13, 14 via the second entrance surface 13c and emerge therefrom via the second exit surface 14c are bundled by refraction and total reflection, in particular collimated.
- the component assembly 12 comprises a redistribution section, which is designated in its entirety by the reference numeral 15.
- the redistribution section 15 has a plurality of facets 20, 21, 22 (cf. FIGS. 4 and 5 ), which are each formed a portion 18 of the beam 19 (see. FIG. 1 ) on a portion 16 of a light exit surface 17 (see. FIGS. 1 . 2 . 5 and 7 ) of the luminaire module 8 to steer.
- the redistribution section 15 preferably has a longitudinal extent along the light exit surface 17 and perpendicular to the main emission direction 11 of the light source 10. In FIG.
- the redistribution section 15 is shown only schematically. But it can - as I said - also be an integral part of the integral component shown (attachment optics 13, 14), or be formed separately from this.
- FIGS. 3a to 3c show various other views of the transparent component assembly 12th
- FIG. 3a shows a view obliquely from above (opposite to the direction of the y-axis in FIG. 5 )
- FIG. 3b a view from diagonally below
- Figure 3c a view from diagonally above.
- the light emitted from the light exit surface 17 in the light exit direction 3 serves to realize the luminaire function of the motor vehicle light.
- the individual subregions 16 of the light exit surface 17 lie next to each other, so that there is an elongated light distribution with a greater horizontal than vertical extent.
- At least some of the facets, in the example shown here, the facets 22, a certain portion 16 of the light exit surface 17 is assigned, on which these facets deflect light 22.
- the facets 20, 21, 22 of the redistribution section 15 deflect the light incident on them by means of reflection (and not by refraction) and in that the redistribution section 15 is formed by the individual reflective facets 20, 21, 22 subareas 18 of the radiation beam 19, which are defined by a subdivision of a cross section of the radiation beam 19 (cf. FIG. 1 ) by means of horizontal and / or vertical cutting planes 23, 24, which run parallel to the mutually parallel light beams of the beam 19 and parallel or perpendicular to each of these associated partial areas 16 of the light exit surface 17.
- the reflecting facets 20, 21, 22 of the redistribution section 15 deflect light incident on them, preferably by means of total reflection.
- the transparent component arrangement 12 is in the form of a transparent solid made of plastic, for example PC, PMMA or PMMI.
- the coupling-in section 13, the bundling section 14 and the redistribution section 15 are formed as a single integral component, that is to say the TIR attachment optics 13, 14 and the redistribution section 15 are integrally formed.
- the bundling section 14 does not have to be positioned and held relative to the redistribution section 15.
- the one integral component brings advantages in the production, for example. In the context of an injection molding process, since the entire component assembly can be produced in one step.
- the reflective facets of the redistribution section 15 include first reflection surfaces 20, second reflection surfaces 21, and third reflection surfaces 22.
- the first reflection surfaces 20 are formed, the light rays at least from some of the partial regions 18 of the radiation beam 19 in the direction of the second reflection surfaces 21, that is perpendicular to the main emission direction 11 of the light source 10 and along the longitudinal extent of the redistribution section 15 to deflect.
- the deflected light beams propagate parallel to one another in the transparent material of the redistribution section 15 in the direction of the second reflection surfaces 21.
- the second reflection surfaces 21 are formed, light beams deflected by the first reflection surfaces 20 in the direction of the corresponding third reflection surfaces 22, that is parallel (but opposite) to the main emission direction 11 of the light source 10 and perpendicular to the direction of the light deflected by the first reflection surfaces 20 light beams to redirect.
- the light beams deflected by the second reflection surfaces 21 propagate parallel to one another in the transparent material of the redistribution section 15.
- the third reflection surfaces 22 are designed to direct the light beams deflected by the second reflection surfaces 21 in the direction of the corresponding subregions 16 of the light exit surface 17, ie perpendicular to the light reflection surface Main emission direction 11 of the light source 10, perpendicular to the direction of the light deflected by the first reflection surfaces 20 light beams and perpendicular to the direction of the deflected by the second reflection surfaces 21 light rays.
- FIG. 7 A corresponding embodiment of the redistribution section 15 and the course of the light beams through the redistribution section 15 is shown in FIG FIG. 7 illustrated for an exemplary drawn light beam 25, which approximately centrally meets the various reflective surfaces 20, 21, 22.
- the light beam 25 is one of many parallel light rays of the radiation beam 19 formed in the condensing portion 14.
- the beam 25 first strikes a first reflection surface 20 in the redistribution section 15.
- the reflection surfaces 20 are arranged in the redistribution section 15 in such a way that light rays from almost all subregions 18 of the radiation beam 19 strike them.
- first reflecting surfaces 20 are provided which are at a right angle to each other, each first reflecting surface 20 is aligned at an angle ⁇ of 45 ° with respect to the parallel light rays entering the redistribution section 15.
- An edge 20c, along which the two reflection surfaces 20 are in contact with each other, extends approximately centrally through the coupled-in radiation beam 19, so that the subregions 18.2a, 18.3a, 18.4a, 18.5a, 18.6a of the radiation beam 19 on the one first Reflection surface 20a and the subregions 18.2b, 18.3b, 18.4b, 18.5b, 18.6b of the radiation beam 19 strike the other first reflection surface 20b.
- the first reflection surfaces 20 thus divert a majority of the light rays that have entered the redistribution section 15 by 90 °, so that they propagate along the longitudinal extent of the redistribution section 15 until they meet one of the second reflection surfaces 21.
- Such a second reflection surface 21 is in FIG. 7 drawn by way of example.
- the reflection surface 21 is likewise oriented at an angle ⁇ of 45 ° with respect to the light beams deflected by the first reflection surface 20 (and thus generally also with respect to the main emission direction 11 of the light source 10). It deflects the light beam 25 again by 90 °, so that it is now directed against the main emission direction 11 of the light source 10.
- the second reflection surfaces 21 have a well-defined size, so that only those light beams of the beam 19 impinge on them, which were previously deflected by one of the first reflection surfaces 20 and which originate from a specific portion 18 of the beam 19.
- This specific subregion 18 can be one of the subregions 18.2a, 18.2b, 18.3a, 18.3b, 18.4a, 18.4b, 18.5a, 18.5b, 18.6a, 18.6b whose light is in a decentralized subarea 16.2a, 16.2b , 16.3a, 16.3b, 16.4a, 16.4b, 16.5a, 16.5b, 16.6a, 16.6b, the light exit surface 17 is deflected.
- second reflection surface 21 directs the incident light beam 25 in the direction of the third reflection surface 22, which is arranged here above the second reflection surface 21 associated therewith.
- a light beam from any portion 18 is reflected at the reflecting surfaces 20 and 21.
- the parallel bundles of rays pass through different planes and are deflected by the reflection surfaces 22 into a common plane, in which they emerge from the arrangement 12 via the exit surface 17.
- the third reflection surface 22 deflects the incident light beam 25 again by 90 ° around, but both perpendicular to the direction of the deflected by the first reflection surface 20 light rays as well as perpendicular to the direction of the deflected by the second reflection surface 21 light rays.
- the deflected by the third reflection surface 22 light beam 25th meets a specific, the third reflection surface 22 associated portion 16 of the light exit surface 17.
- the deflected by the third reflection surfaces 22 light beams propagate in a plane above or below the plane in which propagate the light rays along the longitudinal extension of the redistribution section 15.
- the described beam path is also in FIG. 2 in the sections 2 and 3 for the light beams of the partial areas 18.6a, 18.6b (section 2) and 18.5a, 18.5b (section 3).
- the light beams emitted by the light source 10 enter via the coupling-in section 13 into the transparent component arrangement 12 and are bundled by the bundling section 14 to form the beam bundle 19 with largely parallel light beams.
- the light beams pass from right to left into the redistribution section 15, where they first strike the first reflection surfaces 20.
- the first reflection surfaces 20 deflect the light beams up or down with respect to the drawing plane.
- the light beams deflected by the first reflection surfaces 20 then strike the second reflection surfaces 21.6a, 21.6b assigned to the subregions 18.6a, 18.6b of the beam bundle 19. These then deflect the incident light rays to the right with respect to the plane of the drawing so that they strike the third reflection surfaces 22.6a, 22.6b associated with the second reflection surfaces 21.6a, 21.6b. These deflect the light rays out of the plane of the drawing so that they strike the corresponding subregions 16.6a, 16.6b of the light exit surface 17.
- the light beams deflected by the first reflection surfaces 20 then strike the second reflection surfaces 21.5a, 21.5b assigned to the subregions 18.5a, 18.5b of the beam bundle 19. These then deflect the impinging light rays to the right so that they strike the third reflection surfaces 22.5a, 22.5b assigned to the second reflection surfaces 21.5a, 21.5b. These in turn deflect the light beams out of the plane of the drawing so that they strike the corresponding subareas 16.5a, 16.5b of the light exit surface 17.
- the beam path of these light rays is in FIG. 7 by way of example with reference to two further light beams 26. It can clearly be seen that this third reflection surface 22.1 deflects the incident light beams directly in the direction of the central subregion 16.1 of the light exit surface 17.
- the described beam path for the light beams of the subarea 18.1 of the beam 19 is also in FIG. 2 shown in the section 1.
- the light beams emitted by the light source 10 enter via the coupling-in section 13 into the transparent component arrangement 12 and are bundled by the bundling section 14 to form the beam bundle 19 with largely parallel light beams.
- the light beams pass from right to left into the redistribution section 15, where they strike the third reflection surface 22. 1 associated with the subarea 18. 1 of the beam 19. This deflects the light rays out of the plane of the drawing so that they strike the corresponding central subregion 16. 1 of the light exit surface 17.
- the redistribution section 15 has a planar longitudinal extension, so that a straight elongated light exit surface 17 results.
- the redistribution section 15 it would also be conceivable for the redistribution section 15 to be curved around an axis which runs parallel to the direction of the light beams deflected by the third reflection surfaces 22 in the direction of the corresponding subregions 16 of the light exit surface 17.
- a bent, elongated light exit surface 17 can be produced whose course extends, for example, to an edge region of the housing 2 of FIG Lighting device 1 follows or can be realized by the special design aspects.
- all reflection surfaces 20, 21, 22 are planar. However, it would also be conceivable that the reflection surfaces 20, 21, 22 are formed arched. Furthermore, it would be conceivable that the reflection surfaces 20, 21, 22 are not all tilted at a 45 ° angle with respect to the impinging light beams (or with respect to the main emission direction 11 of the light source 10), but single or all reflection surfaces 20, 21, 22 in FIG inclined at a different angle. In this way, it could be ensured, for example, that the light beams propagating in the redistribution section 15 strike the reflecting surfaces 21, 22 in the beam path in each case when the redistribution section 15 is curved.
- FIG. 6 is shown a further embodiment of the invention, in which a plurality of those described above and in the FIGS. 3 to 5 shown transparent component assemblies 12 are arranged side by side.
- two identically formed transparent component arrangements 12.1, 12.2 are arranged side by side in such a way that their light exit surfaces 17.1, 17.2 form a single, particularly elongated light exit surface.
- end faces of the redistribution sections 15.1, 15.2 directly adjoin one another.
- the juxtaposed component assemblies 12.1, 12.2 are formed as a common integral component.
- the juxtaposed component assemblies 12.1, 12.2 need not necessarily be identical. It would also be conceivable, for example, for one of the component arrangements 12.1, 12.2 a bent around the light exit direction 3 redistribution section 15 or that the component assemblies 12.1, 12.2 are bent differently.
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Abstract
Die Erfindung betrifft eine transparente Bauteilanordnung (12) eines Leuchtenmoduls (8). Sie umfasst
- einen Einkoppelabschnitt (13) zum Einkoppeln von Licht in die Bauteilanordnung (12),
- einen Bündelungsabschnitt (14) zum Bündeln des eingekoppelten Lichts zu einem Strahlenbündel (19) mit parallel zueinander verlaufenden Lichtstrahlen, und
- einen Umverteilungsabschnitt (15) mit mehreren Facetten (20, 21, 22), die jeweils einen Teilbereich (18) des Strahlenbündels (19) auf einen Teilbereich (16) einer Lichtaustrittsfläche (17) des Leuchtenmoduls (8) lenken. Es wird vorgeschlagen, dass die Facetten (20, 21, 22) Licht mittels Reflexion umlenken und dass der parallele Verlauf der Lichtstrahlen der Teilbereiche (18) des Strahlenbündels (19) zueinander während der gesamten Umlenkung in dem Umverteilungsabschnitt (15) erhalten bleibt.
The invention relates to a transparent component arrangement (12) of a luminaire module (8). it includes
a coupling-in section (13) for coupling light into the component arrangement (12),
- A bundling section (14) for bundling the coupled light to a beam (19) with parallel light beams, and
- A redistribution section (15) with a plurality of facets (20, 21, 22), each a portion (18) of the beam (19) on a portion (16) of a light exit surface (17) of the luminaire module (8) direct. It is proposed that the facets (20, 21, 22) redirect light by means of reflection and that the parallel course of the light beams of the partial regions (18) of the radiation beam (19) to one another is maintained during the entire deflection in the redistribution section (15).
Description
Die vorliegende Erfindung betrifft eine transparente Bauteilanordnung eines Leuchtenmoduls. Die Bauteilanordnung umfasst
- einen Einkoppelabschnitt, der ausgebildet ist, von einer Lichtquelle in einer Hauptabstrahlrichtung ausgesandtes Licht in die Bauteilanordnung einzukoppeln,
- einen Bündelungsabschnitt, der ausgebildet ist, das eingekoppelte Licht zu einem Strahlenbündel mit parallel zueinander verlaufenden Lichtstrahlen zu bündeln, und
- einen Umverteilungsabschnitt mit mehreren Facetten, die ausgebildet sind, jeweils einen Teilbereich des Strahlenbündels auf einen Teilbereich einer Lichtaustrittsfläche des Leuchtenmoduls zu lenken. Die Teilbereiche der Lichtaustrittsfläche liegen nebeneinander, so dass sich eine langgezogene Lichtverteilung mit einer größeren horizontalen als vertikalen Erstreckung ergibt.
- a coupling-in section, which is designed to couple light emitted by a light source in a main emission direction into the component arrangement,
- a condensing section configured to collimate the coupled light into a beam having parallel beams of light, and
- a redistribution section with a plurality of facets, which are each designed to direct a subregion of the radiation beam onto a subregion of a light exit surface of the luminaire module. The subareas of the light exit surface are adjacent to each other, so that there is a long light distribution with a greater horizontal than vertical extent.
Zumindest einigen der reflektierenden Facetten ist jeweils ein bestimmter Teilbereich der Lichtaustrittsfläche zugeordnet, auf den diese Facetten Licht umlenken.At least some of the reflective facets are each assigned a specific subarea of the light exit surface onto which these facets redirect light.
Die Erfindung betrifft außerdem ein Leuchtenmodul einer Kraftfahrzeugleuchte. Das Leuchtenmodul umfasst eine Lichtquelle zum Aussenden von Licht in einer Hauptabstrahlrichtung und eine transparente Bauteilanordnung zum Bündeln und Umverteilen des von der Lichtquelle ausgesandten Lichts auf Teilbereiche einer Lichtaustrittsfläche des Leuchtenmoduls zur Erzeugung einer langgezogenen Lichtverteilung mit einer größeren horizontalen als vertikalen Erstreckung.The invention also relates to a luminaire module of a motor vehicle light. The luminaire module comprises a light source for emitting light in a main emission direction and a transparent component arrangement for bundling and redistributing the light emitted by the light source onto portions of a light exit surface of the luminaire module to produce a long light distribution with a greater horizontal than vertical extent.
Im Bereich von Signalleuchten eines Kraftfahrzeugs sind seit einiger Zeit langgezogene Lichtaustrittsflächen, die als ausgedehnte Streifen leuchten, erwünscht. Eine langgezogene Lichtaustrittsfläche weist dabei eine deutlich größere Längserstreckung als Höhe auf. Solche Leuchten werden bspw. im Frontbereich eines Kraftfahrzeugs zur Erzeugung eines Tagfahrlichts, eine Positions- oder Standlichts oder eines Blinklichts oder im Heckbereich eines Kraftfahrzeugs zur Erzeugung eines Rücklichts, eines Bremslichts, eines Blinklichts oder eines Rückfahrlichts eingesetzt. Aus dem Stand der Technik sind verschiedene Möglichkeiten bekannt, eine solche langgezogene Lichtaustrittsfläche zu realisieren. Wichtige Aspekte für die Ausgestaltung solcher Leuchten sind u.a. eine kostengünstige Herstellung und Montage der Leuchte sowie eine möglichst homogene Ausleuchtung der langgezogenen Lichtaustrittsfläche der Leuchte.In the field of signal lights of a motor vehicle for some time elongated light exit surfaces, which shine as extended stripes, desired. An elongate light exit surface has a significantly greater longitudinal extent than height. Such lights are used, for example, in the front region of a motor vehicle for generating a daytime running light, a position or parking light or a flashing light or in the rear of a motor vehicle for generating a tail light, a brake light, a flashing light or a reversing light. From the prior art, various possibilities are known to realize such a long light exit surface. Important aspects for the design of such lights are u.a. a cost-effective production and installation of the lamp and the most homogeneous possible illumination of the elongated light exit surface of the lamp.
Aus der
Ferner ist aus der
Bei diesem Stand der Technik besteht der Umverteilungsabschnitt also aus mehreren Facetten, welche Teilbereiche des Strahlenbündels mittels Brechung auf die verschiedenen Teilbereiche der Lichtaustrittsfläche des Leuchtenmoduls lenken. Ferner hat die bekannte transparente Bauteilanordnung den Nachteil, dass sowohl die Facetten auf der Austrittsfläche des Bündelungsabschnitts als auch die Facetten der Eintrittsfläche des transparenten Leuchtkörpers individuell sehr aufwendig ausgestaltet sein müssen, damit die Teilbereiche des Strahlenbündels aus den kreisringsegmentförmigen Facetten der Austrittsfläche des Bündelungsabschnitts auf die über die Längserstreckung der Eintrittsfläche des Leuchtkörpers verteilt angeordneten rechteckigen Facetten treffen und die Teilbereiche der Lichtaustrittsfläche des Leuchtenmoduls möglichst homogen ausgeleuchtet werden. Es ist offensichtlich, dass auf dem recht komplizierten Weg der Lichtstrahlen von dem Bündelungsabschnitt zu der Lichtaustrittsfläche des Leuchtenmoduls der ursprünglich weitgehend parallele Verlauf aller Lichtstrahlen des Strahlenbündels verloren geht, so dass eine homogene Ausleuchtung der gesamten Lichtaustrittsfläche kaum möglich ist.In this prior art, the redistribution section thus consists of a plurality of facets which divert partial areas of the beam bundle by refraction onto the different subareas of the light exit area of the luminaire module. Furthermore, the known transparent component arrangement has the disadvantage that both the facets on the exit surface of the bundling section and the facets of the entrance surface of the transparent filament must be individually designed very expensive, so that the partial regions of the beam from the circular ring segment-shaped facets of the exit surface of the bundling section on the over the distributed longitudinal extent of the entrance surface of the luminous element arranged rectangular facets meet and the subareas of the light exit surface of the lamp module are illuminated as homogeneously as possible. It is obvious that on the rather complicated path of the light beams from the bundling section to the light exit surface of the luminaire module, the initially largely parallel course of all light beams of the beam is lost, so that a homogeneous illumination of the entire light exit surface is hardly possible.
Ausgehend von dem genannten Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine transparente Bauteilanordnung sowie ein Leuchtenmodul der eingangs genannten Art dahingehend auszugestalten und weiterzubilden, dass eine einfache und kostengünstige Herstellung und Montage, eine möglichst homogene Ausleuchtung der Lichtaustrittsfläche sowie eine Lichtaustrittsfläche mit einer besonders geringen Höhe im Vergleich zu ihrer Längserstreckung erzielt werden kann.Based on the cited prior art, the present invention has the object, to design a transparent component assembly and a lamp module of the type mentioned and further, that a simple and cost-effective production and assembly, as homogeneous as possible illumination of the light exit surface and a light exit surface with a particularly low height compared to their longitudinal extent can be achieved.
Zur Lösung dieser Aufgabe wird eine transparente Bauteilanordnung der eingangs genannten Art vorgeschlagen, bei der die Facetten des Umverteilungsabschnitts das auf sie auftreffende Licht mittels Reflexion umlenken. Der Umverteilungsabschnitt ist dabei ausgebildet, durch die einzelnen reflektierenden Facetten Teilbereiche des Strahlenbündels auf die diesen jeweils zugeordneten Teilbereiche der Lichtaustrittsfläche zu lenken. Die Teilbereiche des Strahlenbündels ergeben sich durch eine Unterteilung eines Querschnitts des Strahlenbündels mittels horizontaler und/oder vertikaler Schnittebenen, die parallel zu den parallel zueinander verlaufenden Lichtstrahlen des Strahlenbündels und parallel oder senkrecht zueinander verlaufen. Während der gesamten Umlenkung des Lichts bleibt der parallele Verlauf der Lichtstrahlen des Strahlenbündels zueinander in dem Umverteilungsabschnitt erhalten.To solve this problem is a transparent Component arrangement of the aforementioned type proposed in which the facets of the redistribution section deflect the incident light on them by means of reflection. In this case, the redistribution section is designed to direct partial regions of the radiation beam through the individual reflective facets to the respective subregions of the light exit surface assigned to them. The subregions of the radiation beam result from a subdivision of a cross section of the radiation beam by means of horizontal and / or vertical sectional planes which run parallel to the light beams of the radiation beam running parallel to one another and parallel or perpendicular to one another. During the entire deflection of the light, the parallel course of the light beams of the beam to each other in the redistribution section remains.
Die Lichtquelle ist vorzugsweise als ein Halbraum-Strahler ausgebildet und umfasst bspw. mindestens eine Leuchtdiode (LED). Die Lichtquelle sendet vorzugsweise Licht mit einer annähernd lambert'schen Abstrahlcharakteristik in einer Hauptabstrahlrichtung in einen 180°-Halbraum aus.The light source is preferably designed as a half-space radiator and comprises, for example, at least one light-emitting diode (LED). The light source preferably emits light having an approximately Lambertian radiation characteristic in a main emission direction into a 180 ° half-space.
Das von dem Bündelungsabschnitt gebündelte Strahlenbündel weist vorzugsweise einen kreisförmigen Querschnitt auf. Es wäre allerdings auch denkbar, dass das Strahlenbündel eine rechteckige Form aufweist, bspw. mit abgerundeten Ecken. Entscheidend ist, dass die von der Lichtquelle mit einem relativ großen Abstrahlwinkel ausgesandten Lichtstrahlen durch den Bündelungsabschnitt in ein Strahlenbündel mit weitgehend parallel zueinander verlaufenden Lichtstrahlen gebündelt werden, die dann im Rahmen der vorliegenden Erfindung auf besonders einfache aber effiziente Weise unter Beibehaltung der Parallelität der Lichtstrahlen untereinander durch den Umverteilungsabschnitt in die entsprechenden Teilbereiche der Lichtaustrittsfläche des Leuchtenmoduls umgelenkt werden können.The bundle of rays bundled by the bundling section preferably has a circular cross-section. However, it would also be conceivable that the beam has a rectangular shape, for example. With rounded corners. The decisive factor is that the light beams emitted by the light source with a relatively large emission angle are bundled by the bundling section into a beam having substantially parallel light beams, which in the context of the present invention in a particularly simple but efficient manner while maintaining the parallelism of the light beams can be deflected each other by the redistribution section in the corresponding portions of the light exit surface of the lamp module.
Die einzelnen Abschnitte der transparenten Bauteilanordnung sind als transparente Festkörper ausgebildet. Sie bestehen aus einem transparenten Material, insbesondere PC, PMMA oder PMMI. Der Einkoppel- und der Bündelungsabschnitt sind vorzugsweise als ein einziges integrales Bauteil ausgebildet. So ist es bspw. denkbar, dass dieses Bauteil in Form einer sog. Vorsatzoptik oder TIR (total internal reflection)-Optik ausgebildet ist. Eine Vorsatzoptik weist einen Einkoppelabschnitt mit einer Vertiefung und mehreren Lichteintrittsflächen im Bereich dieser Vertiefung auf. Die Lichtquelle strahlt ihr Licht hauptsächlich in diese Vertiefung und auf die Eintrittsflächen. Ein Boden der Vertiefung erstreckt sich zumindest bereichsweise senkrecht zu einer Hauptabstrahlrichtung der Lichtquelle und bildet eine erste Lichteintrittsfläche. An einer der ersten Eintrittsfläche gegenüber liegenden Seite weist die Vorsatzoptik eine erste Lichtaustrittsfläche auf. Die erste Eintrittsfläche und/oder die erste Austrittsfläche können nach Art einer Linse gewölbt sein. Lichtstrahlen, die über die erste Eintrittsfläche in die Vorsatzoptik eintreten und über die erste Austrittsfläche aus dieser wieder austreten werden mittels Brechung gebündelt, insbesondere kollimiert.The individual sections of the transparent component arrangement are designed as transparent solids. They consist of a transparent material, in particular PC, PMMA or PMMI. The coupling and the bundling section are preferably formed as a single integral component. Thus, for example, it is conceivable that this component is designed in the form of a so-called intent optical or TIR (total internal reflection) optics. An attachment optics has a coupling-in section with a recess and a plurality of light entry surfaces in the region of this depression. The light source emits light mainly in this depression and on the entrance surfaces. A bottom of the depression extends at least partially perpendicular to a main emission direction of the light source and forms a first light entry surface. On one of the first entrance surface opposite side, the attachment optics on a first light exit surface. The first entrance surface and / or the first exit surface may be curved in the manner of a lens. Light rays which enter via the first entrance surface in the optical attachment and exit via the first exit surface of this are refracted by refraction, in particular collimated.
Ferner umfasst eine Vorsatzoptik mindestens eine zweite Lichteintrittsfläche, die vorzugsweise parallel oder mit geringer Neigung schräg zu der Hauptabstrahlrichtung der Lichtquelle ausgerichtet ist. Auf diese Eintrittsfläche treffen von der Lichtquelle schräg zur Hauptabstrahlrichtung ausgesandte Lichtstrahlen und treten seitlich in die Vorsatzoptik ein. Dort treffen sie zunächst auf totalreflektierende Grenzflächen der Vorsatzoptik und werden von diesen auf mindestens eine zweite Lichtaustrittsfläche der Vorsatzoptik umgelenkt. Diese Austrittsfläche erstreckt sich zumindest über einen Teil des Umfangs der ersten Austrittsfläche. Über die zweite Austrittsfläche treten die von den Grenzflächen reflektierten Lichtstrahlen parallel zu den durch die erste Austrittsfläche austretenden Lichtstrahlen aus der Vorsatzoptik aus. Lichtstrahlen, die über die zweite Eintrittsfläche in die Vorsatzoptik eintreten und über die zweite Austrittsfläche aus dieser wieder austreten, werden mittels Brechung und Totalreflexion (TIR) gebündelt, insbesondere kollimiert.Furthermore, an attachment optics comprises at least one second light entry surface which is preferably aligned parallel or with a slight inclination obliquely to the main emission direction of the light source. On this entrance surface meet from the light source obliquely to the main emission direction emitted light rays and enter laterally into the attachment optics. There they meet first on totally reflecting interfaces of the attachment optics and are deflected by these on at least a second light exit surface of the attachment optics. This exit surface extends at least over part of the circumference of the first exit surface. Via the second exit surface, the light rays reflected by the boundary surfaces emerge parallel to the light rays emerging from the attachment optics through the first exit surface. Light rays which enter the optical attachment via the second entrance surface and emerge from it via the second exit surface are bundled by refraction and total reflection (TIR), in particular collimated.
Statt einer TIR-Vorsatzoptik kann auch eine Linse, insbesondere eine plankonvexe Linse, zur Bündelung der von der Lichtquelle ausgesandten Lichtstrahlen verwendet werden.Instead of a TIR attachment optics, it is also possible to use a lens, in particular a plano-convex lens, for focusing the light beams emitted by the light source.
Ein Vorteil der vorliegenden Erfindung ist es, dass die transparente Bauteilanordnung besonders einfach ausgestaltet und damit auch einfach und kostengünstig herstellbar ist und dass trotzdem der parallele Verlauf der Lichtstrahlen des Strahlenbündels zueinander während der gesamten Umlenkung in dem Umverteilungsabschnitt erhalten bleibt. Dadurch können die einzelnen Teilbereiche der Lichtaustrittsfläche des Leuchtenmoduls besonders homogen ausgeleuchtet werden.An advantage of the present invention is that the transparent component arrangement is particularly simple and thus easy and inexpensive to produce and that nevertheless the parallel course of the light beams of the beam to each other during the entire deflection in the redistribution section is maintained. As a result, the individual subareas of the light exit surface of the luminaire module can be illuminated in a particularly homogeneous manner.
Gemäß einer vorteilhaften Weiterbildung der vorliegenden Erfindung sind der Einkoppel-, der Bündelungs- und der Umverteilungsabschnitt als ein einziges integrales Bauteil ausgebildet. Somit ist die gesamte transparente Bauteilanordnung als ein Festkörper aus einem transparenten Kunststoffmaterial, insbesondere PC, PMMA oder PMMI, ausgebildet. Dies hat große Vorteile bezüglich einer kostengünstigen Herstellung, da die gesamte transparente Bauteilanordnung in einem Herstellungsschritt hergestellt werden kann. Die Bauteilanordnung kann bspw. mittels eines Spritzgießverfahrens hergestellt werden.According to an advantageous embodiment of the present invention, the coupling, the bundling and the redistribution section are formed as a single integral component. Thus, the entire transparent component assembly is as a solid of a transparent Plastic material, in particular PC, PMMA or PMMI trained. This has great advantages in terms of low-cost manufacturing, since the entire transparent component assembly can be manufactured in one manufacturing step. The component arrangement can be produced, for example, by means of an injection molding process.
Gemäß einer bevorzugten Ausführungsform wird vorgeschlagen, dass der Einkoppelabschnitt eine rotationssymmetrische Form aufweist, wobei eine Rotationsachse deckungsgleich mit einer Hauptabstrahlrichtung des Lichts durch die Lichtquelle ist. Dementsprechend wird auch vorgeschlagen, dass der Bündelungsabschnitt eine rotationssymmetrische Form aufweist, wobei eine Rotationsachse deckungsgleich mit einer Hauptabstrahlrichtung des Lichts durch die Lichtquelle ist.According to a preferred embodiment, it is proposed that the coupling-in section has a rotationally symmetrical shape, wherein an axis of rotation is congruent with a main emission direction of the light through the light source. Accordingly, it is also proposed that the bundling section has a rotationally symmetrical shape, wherein an axis of rotation is congruent with a main emission direction of the light through the light source.
Der Umverteilungsabschnitt der transparenten Bauteilanordnung weist vorzugsweise eine Längserstreckung entlang der Lichtaustrittsfläche und senkrecht zu einer Hauptabstrahlrichtung der Lichtquelle auf. Die Länge des Umverteilungsabschnitts entspricht in etwa der Länge der Lichtaustrittsfläche mit den nebeneinander angeordneten Teilbereichen, auf die die umgelenkten Lichtstrahlen der Teilbereiche des Strahlenbündels umgelenkt werden. Selbstverständlich können auf der Lichtaustrittsfläche optisch wirksame Strukturen (bspw. beliebige Linsen, Zylinderoptiken, Kissenoptiken, Streuoptiken, Prismen, etc.) angeordnet sein, um aus dem über die Lichtaustrittsfläche austretenden Licht eine gewünschte Lichtverteilung des Leuchtenmoduls zu erzielen. Insbesondere ist es denkbar, die austretenden Lichtstrahlen horizontal zu streuen, um eine Lichtverteilung zu erzielen, die breiter als die Lichtaustrittsfläche ist, und um eine Sichtbarkeit der Leuchte bzw. des durch diese ausgesandten Lichts durch andere Verkehrsteilnehmer aus größeren seitlichen Blickwinkeln zu verbessern.The redistribution section of the transparent component arrangement preferably has a longitudinal extent along the light exit surface and perpendicular to a main emission direction of the light source. The length of the redistribution section corresponds approximately to the length of the light exit surface with the juxtaposed partial regions, to which the deflected light beams of the partial regions of the radiation beam are deflected. Of course, optically active structures (for example, any lenses, cylindrical optics, cushion optics, scattering optics, prisms, etc.) may be arranged on the light exit surface in order to achieve a desired light distribution of the luminaire module from the light exiting via the light exit surface. In particular, it is conceivable to scatter the exiting light beams horizontally, in order to achieve a light distribution which is wider than the light exit surface, and by one Visibility of the lamp or the light emitted by this light to improve by other road users from larger side angles.
Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung wird vorgeschlagen, dass die reflektierenden Facetten des Umverteilungsabschnitts auf sie auftreffendes Licht mittels Totalreflexion umlenken. Die Facetten können somit als totalreflektierende Grenzflächen des als transparenter Festkörper ausgebildeten Umverteilungsabschnitts ausgebildet sein. Diese Flächen können im Rahmen eines Spritzgießverfahrens mit hoher Genauigkeit hergestellt werden. Da der Umverteilungsabschnitt der transparenten Bauteilanordnung eine sehr geringe Höhe aufweist, die im Bereich weniger Millimeter (z.B. 2,5 mm) liegt, kommt es beim Aushärten des gespritzten Kunststoffteils auch allenfalls zu minimalen Materialschrumpfungen, so dass die transparente Bauteilanordnung und insbesondere die reflektierenden Facetten des Umverteilungsabschnitts mit einer besonders hohen Genauigkeit hergestellt werden können.According to a preferred embodiment of the present invention, it is proposed that the reflective facets of the redistribution section deflect light incident on them by means of total reflection. The facets can thus be designed as totally reflecting boundary surfaces of the redistribution section designed as a transparent solid. These surfaces can be manufactured as part of an injection molding process with high accuracy. Since the redistribution section of the transparent component arrangement has a very small height, which is in the range of a few millimeters (eg 2.5 mm), minimal material shrinkage occurs during curing of the sprayed plastic part, so that the transparent component arrangement and in particular the reflective facets of the Redistribution section can be produced with a particularly high accuracy.
Gemäß einer anderen vorteilhaften Weiterbildung der vorliegenden Erfindung wird vorgeschlagen, dass die reflektierenden Facetten des Umverteilungsabschnitts erste Reflexionsflächen, zweite Reflexionsflächen und dritte Reflexionsflächen umfassen. Die ersten Reflexionsflächen sind ausgebildet, die Lichtstrahlen zumindest von einigen der Teilbereiche des Strahlenbündels in Richtung der zweiten Reflexionsflächen, senkrecht zu einer Hauptabstrahlrichtung der Lichtquelle und entlang einer Längserstreckung des Umverteilungsabschnitts umzulenken. Das heißt also, dass die ersten Reflexionsflächen derart in dem Umverteilungsabschnitt angeordnet und ausgerichtet sind, dass die in den Umverteilungsabschnitt eingetretenen Lichtstrahlen zumindest von einigen der Teilbereiche des Strahlenbündels unmittelbar auf die ersten Reflexionsflächen treffen und von diesen umgelenkt werden. Die zweiten Reflexionsflächen sind ausgebildet, von den ersten Reflexionsflächen umgelenkte Lichtstrahlen in Richtung der entsprechenden dritten Reflexionsflächen, parallel zu der Hauptabstrahlrichtung der Lichtquelle und senkrecht zu der Richtung der von den ersten Reflexionsflächen umgelenkten Lichtstrahlen umzulenken. Die dritten Reflexionsflächen sind ausgebildet, von den zweiten Reflexionsflächen umgelenkte Lichtstrahlen in Richtung der entsprechenden Teilbereiche der Lichtaustrittsfläche, senkrecht zu der Hauptabstrahlrichtung der Lichtquelle, senkrecht zu der Richtung der von den ersten Reflexionsflächen umgelenkten Lichtstrahlen und senkrecht zu der Richtung der von den zweiten Reflexionsflächen umgelenkten Lichtstrahlen umzulenken. Die von den ersten Reflexionsflächen umgelenkten Lichtstrahlen der verschiedenen Teilbereiche des Strahlenbündels können in dem Umverteilungsabschnitt auf der gleichen Höhe aber (von oben betrachtet) nebeneinander bzw. (von vorne betrachtet) hintereinander verlaufen. Das erlaubt eine besonders geringe Bauhöhe des Umverteilungsabschnitts im Bereich von nur wenigen Millimetern.According to another advantageous development of the present invention, it is proposed that the reflective facets of the redistribution section comprise first reflection surfaces, second reflection surfaces and third reflection surfaces. The first reflection surfaces are configured to deflect the light beams at least from some of the partial regions of the radiation beam in the direction of the second reflection surfaces, perpendicular to a main emission direction of the light source and along a longitudinal extension of the redistribution section. This means that the first reflection surfaces are arranged and aligned in the redistribution section in that the light beams which have entered the redistribution section at least of at least some of the subareas of the radiation beam impinge directly on the first reflection surfaces and are deflected by them. The second reflection surfaces are configured to redirect light beams deflected by the first reflection surfaces in the direction of the corresponding third reflection surfaces, parallel to the main emission direction of the light source and perpendicular to the direction of the light rays deflected by the first reflection surfaces. The third reflection surfaces are formed, light beams deflected by the second reflection surfaces in the direction of the corresponding portions of the light exit surface, perpendicular to the main emission of the light source, perpendicular to the direction of the deflected from the first reflection surfaces of light rays and perpendicular to the direction of the deflected by the second reflection surfaces light rays redirect. The light beams deflected by the first reflection surfaces of the various subregions of the radiation beam can run in the redistribution section at the same height but (seen from above) next to one another or (viewed from the front) in succession. This allows a particularly low overall height of the redistribution section in the range of only a few millimeters.
Gemäß einer bevorzugten Ausführungsform der Erfindung treffen die Lichtstrahlen eines Teilbereichs des Strahlenbündels, dessen Licht der Umverteilungsabschnitt auf einen zentralen Teilbereich der Lichtaustrittsfläche umlenkt, unmittelbar auf mindestens eine der dritten Reflexionsflächen, ohne zuvor auf eine der ersten Reflexionsflächen oder eine der zweiten Reflexionsflächen zu treffen. Die Lichtstrahlen des Teilbereichs des Strahlenbündels, welche auf den zentralen Teilbereich der Lichtaustrittsfläche umgelenkt werden, werden also nicht an ersten Reflexionsflächen entlang der Längserstreckung des Umverteilungsabschnitts und senkrecht zu der Hauptabstrahlrichtung der Lichtquelle umgelenkt, um dann auf zweite Reflexionsflächen zu treffen, welche sie dann in Richtung der dritten Reflexionsfläche umlenken. Vielmehr treffen diese Lichtstrahlen nach dem Eintritt in den Umverteilungsabschnitt unmittelbar auf die dritten Reflexionsflächen, welche die Lichtstrahlen in Richtung des zentralen Teilbereichs der Lichtaustrittsfläche senkrecht zu der Hauptabstrahlrichtung der Lichtquelle und senkrecht zur Längserstreckung des Umverteilungsabschnitts umlenken.According to a preferred embodiment of the invention, the light beams of a portion of the beam, the light of the redistribution section deflects to a central portion of the light exit surface, directly on at least one of the third reflection surfaces without hitting one of the first reflection surfaces or one of the second reflection surfaces. The light rays of the subregion of the Beams which are deflected onto the central subregion of the light exit surface are therefore not deflected at first reflection surfaces along the longitudinal extent of the redistribution section and perpendicular to the main emission direction of the light source, in order then to encounter second reflection surfaces, which then redirect them in the direction of the third reflection surface. On the contrary, these light beams, after entering the redistribution section, impinge directly on the third reflection surfaces which deflect the light beams in the direction of the central subarea of the light exit surface perpendicular to the main emission direction of the light source and perpendicular to the longitudinal extent of the redistribution section.
Alle anderen Lichtstrahlen, die also nicht auf den zentralen Teilbereich der Lichtaustrittsfläche umgelenkt werden, müssen erst mittels der ersten Reflexionsflächen mehr oder weniger weit entlang der Längserstreckung des Umverteilungsabschnitts in diesem propagiert werden, bevor sie auf die zweiten Reflexionsflächen treffen, welche sie dann in Richtung der dritten Reflexionsfläche umlenken, welche die Lichtstrahlen dann in Richtung der entsprechenden dezentral angeordneten Teilbereiche der Lichtaustrittsfläche umlenken.All other light beams, which are thus not deflected to the central portion of the light exit surface, must first be propagated by the first reflection surfaces more or less along the longitudinal extent of the redistribution section in this before they hit the second reflection surfaces, which then in the direction of Redirecting third reflection surface, which then deflect the light rays in the direction of the corresponding decentralized subregions of the light exit surface.
Dementsprechend wird vorgeschlagen, dass die zweiten Reflexionsflächen, welche die in dem Umverteilungsabschnitt propagierenden Lichtstrahlen in Richtung der dritten Reflexionsflächen umlenken, einen unterschiedlich großen Abstand zu den ersten Reflexionsflächen aufweisen, entsprechend einem Abstand der entsprechenden Teilbereiche der Lichtaustrittsfläche, auf welche die den zweiten Reflexionsflächen jeweils zugeordneten dritten Reflexionsflächen die Lichtstrahlen umlenken, zu dem zentralen Teilbereich der Lichtaustrittsfläche.Accordingly, it is proposed that the second reflection surfaces, which redirect the light beams propagating in the redistribution section in the direction of the third reflection surfaces, have a different distance from the first reflection surfaces, corresponding to a spacing of the corresponding subareas of the light exit surface to which the respective second reflection surfaces are assigned third reflection surfaces deflect the light rays, to the central portion of the light exit surface.
Ferner wird vorgeschlagen, dass die dritten Reflexionsflächen, welche die von den ihnen jeweils zugeordneten zweiten Reflexionsflächen kommenden Lichtstrahlen in Richtung der entsprechenden dezentral angeordneten Teilbereiche der Lichtaustrittsfläche umlenken, einen unterschiedlich großen Abstand zu den ersten Reflexionsflächen aufweisen, entsprechend einem Abstand der entsprechenden Teilbereiche der Lichtaustrittsfläche, auf welche die den zweiten Reflexionsflächen jeweils zugeordneten dritten Reflexionsflächen die Lichtstrahlen umlenken, zu dem zentralen Teilbereich der Lichtaustrittsfläche.It is also proposed that the third reflection surfaces, which redirect the light beams coming from the respectively associated second reflection surfaces in the direction of the corresponding decentrally arranged subareas of the light exit surface, have different distances from the first reflection surfaces, corresponding to a distance of the corresponding subregions of the light exit surface. to which the second reflection surfaces respectively associated third reflection surfaces deflect the light rays to the central portion of the light exit surface.
Das heißt also, dass der Abstand von den zweiten und dritten Reflexionsflächen zu den ersten Reflexionsflächen umso größer ist, desto weiter entfernt derjenige Teilbereich der Lichtaustrittsfläche, auf den die zweiten und dritten Reflexionsflächen Lichtstrahlen umlenken, von dem zentralen Teilbereich der Lichtaustrittsfläche angeordnet ist. Mit anderen Worten, ein Lichtstrahl, der in etwa auf die Mitte der ersten und zweiten Reflexionsflächen trifft, legt auf seinem Weg von einer ersten zu einer zweiten Reflexionsfläche einen Weg zurück, der in etwa dem Abstand der Mitte desjenigen Teilbereichs der Lichtaustrittsfläche, auf den der Lichtstrahl über die zweiten und dritten Reflexionsflächen umgelenkt wird, zu der Mitte des zentralen Teilbereichs der Lichtaustrittsfläche entspricht.That is to say, that the distance from the second and third reflection surfaces to the first reflection surfaces is greater, the farther away is that portion of the light exit surface, to which the second and third reflection surfaces deflect light rays, arranged from the central subregion of the light exit surface. In other words, a light beam which strikes approximately at the center of the first and second reflection surfaces, on its way from a first to a second reflection surface, travels a distance which is approximately equal to the distance of the center of the partial region of the light exit surface on which the light source Light beam is deflected via the second and third reflection surfaces, corresponds to the center of the central portion of the light exit surface.
Der Umverteilungsabschnitt kann als eine ebene Platte ausgestaltet sein, wobei die Lichtaustrittsfläche dann eine gerade Längserstreckung aufweist. In diesem Fall sind die verschiedenen Reflexionsflächen vorzugsweise eben ausgebildet und weisen eine Neigung von 45° bezüglich der auf sie auftreffenden Lichtstrahlen auf, so dass die auf die Reflexionsflächen treffenden Lichtstrahlen von den Reflexionsflächen jeweils um 90° umgelenkt werden. Es wäre aber auch denkbar, dass der Umverteilungsabschnitt um eine Achse parallel zu der Richtung der von den dritten Reflexionsflächen in Richtung der entsprechenden Teilbereiche der Lichtaustrittsfläche umgelenkten Lichtstrahlen gebogen ausgestaltet ist. In diesem Fall könnte es dann erforderlich sein, die Neigung der ebenen Reflexionsflächen geringfügig abweichend von 45° zu wählen, um sicherzustellen, dass die auf eine Reflexionsfläche auftreffenden Lichtstrahlen auch wirklich möglichst alle auf die im Strahlengang nachfolgende Reflexionsfläche bzw. den entsprechenden Teilbereich der Lichtaustrittsfläche treffen. Es wäre ferner denkbar, die Reflexionsflächen nicht eben, sondern leicht gewölbt auszugestalten, um dieses Ziel besser zu erreichen.The redistribution section can be designed as a flat plate, wherein the light exit surface then has a straight longitudinal extent. In this case, the preferably flat surfaces and have an inclination of 45 ° with respect to the light rays impinging on them, so that the incident on the reflection surfaces light rays are deflected by the reflection surfaces in each case by 90 °. However, it would also be conceivable for the redistribution section to be configured bent around an axis parallel to the direction of the light beams deflected by the third reflection surfaces in the direction of the corresponding subregions of the light exit surface. In this case, it may then be necessary to select the inclination of the flat reflection surfaces slightly differently from 45 ° in order to ensure that the light rays striking a reflection surface actually hit as much as possible on the reflection surface following the beam path or the corresponding partial region of the light exit surface , It would also be conceivable to design the reflecting surfaces not flat, but slightly curved in order to better achieve this goal.
Es wäre denkbar, auch mehrere der transparenten Bauteilanordnungen nebeneinander anzuordnen, so dass Stirnseiten des Umverteilungsabschnitts der Bauteilanordnungen unmittelbar aneinander grenzen. Auf diese Weise kann eine besonders langgestreckte Lichtaustrittsfläche realisiert werden, die sich aus den Lichtaustrittsflächen der einzelnen transparenten Bauteilanordnungen zusammensetzt. Die Umverteilungsabschnitte mehrerer nebeneinander angeordneter transparenter Bauteilanordnungen können auch einteilig ausgebildet sein.It would also be conceivable to arrange several of the transparent component arrangements next to one another so that end faces of the redistribution section of the component arrangements directly adjoin one another. In this way, a particularly elongated light exit surface can be realized, which is composed of the light exit surfaces of the individual transparent component assemblies. The redistribution sections of several juxtaposed transparent component arrangements can also be formed in one piece.
Die der vorliegenden Erfindung zugrundeliegende Aufgabe wird auch durch ein Leuchtenmodul der eingangs genannten Art gelöst, das eine erfindungsgemäße transparente Bauteilanordnung aufweist. Ein solches Leuchtenmodul kann zur Erzeugung einer langgestreckten Lichtverteilung mit einer größeren horizontalen als vertikalen Erstreckung genutzt werden. Die Lichtverteilung dient insbesondere zur Realisierung einer beliebigen Leuchtenfunktion, bspw. eines Tagfahrlichts, eines Blinklichts, eines Positions- oder Standlichts, eines Rücklichts, eines Bremslichts oder eines Rückfahrlichts. Je nach gewünschter Leuchtenfunktion werden Lichtquellen verwendet, die Licht einer bestimmten Farbe (z.B. weiß, gelb, rot) aussenden. Ferner wäre es denkbar, Lichtquellen zu verwenden, die jeweils Licht unterschiedlicher Farbe aussenden können (z.B. sog. Multicolor- oder RGB-LEDs), so dass sie in Abhängigkeit einer entsprechenden Ansteuerung der Lichtquelle Licht einer bestimmten Farbe aussenden, um eine gewünschte Lichtverteilung zu realisieren. Auf diese Weise ist es möglich, mit ein- und derselben transparenten Bauteilanordnung bzw. ein- und demselben Leuchtenmodul unterschiedliche Leuchtenfunktionen (z.B. Tagfahrlicht und Blinklicht) zu realisieren.The object underlying the present invention is also achieved by a lighting module of the aforementioned Solved type having a transparent component assembly according to the invention. Such a luminaire module can be used to produce an elongated light distribution with a greater horizontal than vertical extent. The light distribution is used in particular for the realization of any lighting function, for example a daytime running light, a flashing light, a position or parking light, a tail light, a brake light or a reversing light. Depending on the desired luminaire function, light sources are used that emit light of a specific color (eg white, yellow, red). Furthermore, it would be conceivable to use light sources which can each emit light of different color (eg so-called multicolour or RGB LEDs), so that they emit light of a specific color as a function of a corresponding activation of the light source in order to realize a desired light distribution , In this way, it is possible to realize different light functions (eg daytime running light and flashing light) with one and the same transparent component arrangement or one and the same light module.
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden nachfolgend im Detail anhand der Figuren näher erläutert. Es zeigen:
Figur 1- eine schematische Darstellung für eine Umverteilung eines Strahlenbündels mit rundem Querschnitt auf eine langgezogene Lichtaustrittsfläche;
Figur 2- eine schematische Darstellung der Umverteilung in drei Schnitten aus
Figur 1 ; Figuren 3a bis 3c- ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen transparenten Bauteilanordnung in verschiedenen Ansichten;
Figur 4- eine perspektivische Ansicht der Bauteilanordnung aus
den Figuren 3a bis 3c von schräg hinten; Figur 5- eine perspektivische Ansicht der Bauteilanordnung aus
den Figuren 3a bis 3c von schräg oben und vorne; Figur 6- eine perspektivische Ansicht von zwei nebeneinander angeordneten Bauteilanordnungen aus
den Figuren 3a bis 3c von schräg oben und vorne; - Figur 7
- einen anhand von Beispielstrahlen eingezeichneten schematisch dargestellten Verlauf der Lichtstrahlen in dem Umverteilungsabschnitt der erfindungsgemäßen transparenten Bauteilanordnung; und
Figur 8- eine Beleuchtungseinrichtung mit einem erfindungsgemäßen Leuchtenmodul, das seinerseits eine erfindungsgemäße transparenten Bauteilanordnung umfasst.
- FIG. 1
- a schematic representation of a redistribution of a beam with a round cross section on a long light exit surface;
- FIG. 2
- a schematic representation of the redistribution in three sections
FIG. 1 ; - FIGS. 3a to 3c
- a preferred embodiment of a transparent component assembly according to the invention in different views;
- FIG. 4
- a perspective view of the component assembly of the
FIGS. 3a to 3c from diagonally behind; - FIG. 5
- a perspective view of the component assembly of the
FIGS. 3a to 3c from diagonally above and in front; - FIG. 6
- a perspective view of two juxtaposed component assemblies of the
FIGS. 3a to 3c from diagonally above and in front; - FIG. 7
- a graph of the light beams shown schematically on the basis of example beams in the redistribution section of the transparent component assembly according to the invention; and
- FIG. 8
- a lighting device with a lamp module according to the invention, which in turn comprises a transparent component assembly according to the invention.
Die nachfolgend beschriebenen Merkmale der vorliegenden Erfindung können auch einzeln oder in einer anderen Kombination miteinander als hier beschrieben und in den Figuren gezeigt erfindungswesentlich sein. Die vorliegende Erfindung ist nicht auf die hier beschriebenen Ausführungsbeispiele beschränkt.The features of the present invention described below can also be essential to the invention, individually or in a different combination with one another than described here and shown in the figures. The present invention is not limited to the embodiments described herein.
In
Im Einzelnen weist der Scheinwerfer 1 ein Gehäuse 2 auf, das vorzugsweise aus Kunststoff gefertigt ist. In einer Lichtaustrittsrichtung 3 hat das Gehäuse 2 eine Lichtaustrittsöffnung 4, die mittels einer transparenten Abdeckscheibe 5 verschlossen ist. Die Abdeckscheibe 5 besteht aus Glas oder Kunststoff. Auf der Abdeckscheibe 5 können zumindest bereichsweise optisch wirksame Elemente (z. B. Prismen oder Zylinderlinsen) angeordnet sein, um das hindurchtretende Licht zu streuen (sogenannte Streuscheibe). Es ist aber auch denkbar, dass die Abdeckscheibe 5 ohne solche optisch wirksamen Elemente ausgebildet ist (sogenannte klare Scheibe).In detail, the headlight 1 a
Im Inneren des Gehäuses 2 ist ein Lichtmodul 6 angeordnet.Inside the
Das Lichtmodul 6 kann zur Erzeugung einer beliebigen Scheinwerferfunktion oder eines Teils davon dienen. Insbesondere kann das Lichtmodul 6 zur Erzeugung einer Abblendlichtverteilung, einer Fernlichtverteilung, einer Nebellichtverteilung oder einer beliebigen adaptiven Lichtverteilung oder eines Teils davon dienen. Ferner kann in dem Gehäuse 2 ein weiteres Lichtmodul 7 angeordnet sein. Dieses dient bspw. zur Erzeugung einer weiteren Scheinwerferfunktion. Es wäre aber auch denkbar, dass die Lichtmodule 6, 7 zusammen die vorgesehene Scheinwerferfunktion erzeugen. So könnte beispielsweise das Lichtmodul 7 eine Abblendlicht-Grundlichtverteilung mit einer relativ breiten Streuung und einer horizontalen Hell-Dunkel-Grenze erzeugen. Das Lichtmodul 6 könnte dann eine Abblendlicht-Spotlichtverteilung erzeugen, die im Vergleich zu der Abblendlicht-Grundlichtverteilung des Lichtmoduls 7 relativ stark konzentriert ist und an der Oberseite eine asymmetrische Helldunkelgrenze aufweist. Die asymmetrische Helldunkelgrenze weist auf der eigenen Verkehrsseite einen höheren Verlauf auf als auf der Gegenverkehrsseite. Eine Überlagerung der Grundlichtverteilung und der Spotlichtverteilung ergibt eine herkömmliche Abblendlichtverteilung. Selbstverständlich ist es denkbar, dass in dem Scheinwerfergehäuse 2 außer den Lichtmodulen 6, 7 noch weitere Lichtmodule zur Realisierung anderer Scheinwerferfunktionen angeordnet sind. Außerdem kann in dem Scheinwerfergehäuse 2 lediglich ein Lichtmodul, beispielsweise das Lichtmodul 6 ohne das Lichtmodul 7, angeordnet sein.The
Schließlich ist in dem Gehäuse 2 auch mindestens eine Kraftfahrzeugleuchte mit einem erfindungsgemäßen Leuchtenmodul 8 angeordnet. Das Leuchtenmodul 8 dient zur Erzeugung von mindestens einer beliebigen Leuchtenfunktion, beispielsweise eines Blinklichts, eines Positionslichts, eines Tagfahrlichts, etc. Das erfindungsgemäße Leuchtenmodul 8 wird nachfolgend unter Bezugnahme auf die
Das Leuchtenmodul 8 ist in verschiedenen perspektivischen Ansichten in den
Ferner umfasst das Leuchtenmodul 8 eine transparente Bauteilanordnung, die in ihrer Gesamtheit mit dem Bezugszeichen 12 bezeichnet ist. Diese umfasst ihrerseits einen Einkoppelabschnitt 13, der ausgebildet ist, das von der Lichtquelle 10 in der Hauptabstrahlrichtung 11 ausgesandte Licht in die Bauteilanordnung 12 einzukoppeln. Der Einkoppelabschnitt 13 weist vorzugsweise eine rotationssymmetrische Form auf, wobei eine Rotationsachse vorzugsweise deckungsgleich mit der Hauptabstrahlrichtung 11 des Lichts durch die Lichtquelle 10 ist.Furthermore, the
Des Weiteren weist die Bauteilanordnung 12 einen Bündelungsabschnitt 14 auf, der ausgebildet ist, das eingekoppelte Licht zu einem Strahlenbündel 19 mit parallel zueinander verlaufenden Lichtstrahlen zu bündeln. Das von dem Bündelungsabschnitt 14 gebündelte Strahlenbündel 19 weist vorzugsweise einen kreisförmigen Querschnitt auf (vgl.
In
Ferner umfasst eine Vorsatzoptik 13, 14 mindestens eine zweite Lichteintrittsfläche 13c, die durch eine Wandung der Vorsatzoptik 13, 14 gebildet wird, welche die zylinder- oder kegelstumpfförmige Vertiefung 13a begrenzt. Auf diese Eintrittsfläche 13c treffen von der Lichtquelle 10 schräg zur Hauptabstrahlrichtung 11 ausgesandte Lichtstrahlen und treten seitlich in die Vorsatzoptik 13, 14 ein. Dort treffen sie zunächst auf totalreflektierende Grenzflächen 14a der Vorsatzoptik 13, 14 und werden von diesen auf mindestens eine zweite Lichtaustrittsfläche 14c der Vorsatzoptik 13, 14 umgelenkt. Diese Austrittsfläche 14c erstreckt sich zumindest um einen Teil des Umfangs der ersten Austrittsfläche 14b herum. Über die zweite Austrittsfläche 14c treten die von den Grenzflächen 14a reflektierten Lichtstrahlen parallel zu den über die erste Austrittsfläche 14b austretenden Lichtstrahlen aus der Vorsatzoptik 13, 14 aus. Lichtstrahlen, die über die zweite Eintrittsfläche 13c in die Vorsatzoptik 13, 14 eintreten und über die zweite Austrittsfläche 14c aus dieser wieder austreten, werden mittels Brechung und Totalreflexion gebündelt, insbesondere kollimiert.Furthermore, an
Außerdem umfasst die Bauteilanordnung 12 einen Umverteilungsabschnitt, der in seiner Gesamtheit mit dem Bezugszeichen 15 bezeichnet ist. Der Umverteilungsabschnitt 15 weist mehrere Facetten 20, 21, 22 (vgl.
Die
Das aus der Lichtaustrittsfläche 17 in der Lichtaustrittsrichtung 3 ausgesandte Licht (vgl.
Die transparenten Bauteilanordnung 12 ist in Form eines transparenten Festkörpers aus Kunststoff, bspw. PC, PMMA oder PMMI ausgebildet. Gemäß der hier in den Figuren gezeigten Ausführungsform der transparenten Bauteilanordnung 12 sind der Einkoppelabschnitt 13, der Bündelungsabschnitt 14 und der Umverteilungsabschnitt 15 als ein einziges integrales Bauteil ausgebildet, das heißt die TIR-Vorsatzoptik 13, 14 und der Umverteilungsabschnitt 15 sind einteilig ausgebildet. Das hat den Vorteil, dass im Rahmen der Montage des Leuchtenmoduls 8 bzw. der transparenten Bauteilanordnung 12 der Bündelungsabschnitt 14 nicht erst relativ zu dem Umverteilungsabschnitt 15 positioniert und gehalten werden muss. Zudem bringt das eine integrale Bauteil Vorteile bei der Herstellung, bspw. im Rahmen eines Spritzgussverfahrens, da die gesamte Bauteilanordnung in einem Schritt hergestellt werden kann.The
In dem in den
Eine entsprechende Ausgestaltung des Umverteilungsabschnitts 15 und der Verlauf der Lichtstrahlen durch den Umverteilungsabschnitt 15 ist in
In dem Beispiel sind zwei erste Reflexionsflächen 20 vorgesehen, die in einem rechten Winkel zueinander stehen, wobei jede erste Reflexionsfläche 20 in einem Winkel α von 45° bezüglich der in den Umverteilungsabschnitt 15 eintretenden parallelen Lichtstrahlen ausgerichtet ist. Eine Kante 20c, entlang der die beiden Reflexionsflächen 20 miteinander in Kontakt stehen, verläuft in etwa mittig durch das eingekoppelte Strahlenbündel 19, so dass die Teilbereiche 18.2a, 18.3a, 18.4a, 18.5a, 18.6a des Strahlenbündels 19 auf die eine erste Reflexionsfläche 20a treffen und die Teilbereiche 18.2b, 18.3b, 18.4b, 18.5b, 18.6b des Strahlenbündels 19 auf die andere erste Reflexionsfläche 20b treffen. Die ersten Reflexionsflächen 20 lenken also einen Großteil der in den Umverteilungsabschnitt 15 eingetretenen Lichtstrahlen um 90° um, so dass sie so lange entlang der Längserstreckung des Umverteilungsabschnitts 15 propagieren bis sie auf eine der zweiten Reflexionsflächen 21 treffen.In the example, two first reflecting
Eine solche zweite Reflexionsfläche 21 ist in
Eine solche dritte Reflexionsfläche 22 ist in
Der beschriebene Strahlenverlauf ist auch in
In dem Schnitt 3 treffen die von den ersten Reflexionsflächen 20 umgelenkten Lichtstrahlen dann auf die den Teilbereichen 18.5a, 18.5b des Strahlbündels 19 zugeordneten zweiten Reflexionsflächen 21.5a, 21.5b. Diese lenken die auftreffenden Lichtstrahlen dann nach rechts ab, so dass sie auf die den zweiten Reflexionsflächen 21.5a, 21.5b zugeordneten dritten Reflexionsflächen 22.5a, 22.5b treffen. Diese lenken die Lichtstrahlen wiederum aus der Zeichenebene heraus um, so dass sie auf die entsprechenden Teilbereiche 16.5a, 16.5b der Lichtaustrittsfläche 17 treffen.In the
Lichtstrahlen eines Teilbereichs 18.1 des Strahlenbündels 19, die der Umverteilungsabschnitt 15 auf einen zentralen Teilbereich 16.1 der Lichtaustrittsfläche 17 umlenkt, treffen unmittelbar auf mindestens eine dem Teilbereich 18.1 des Strahlenbündels 19 zugeordnete dritte Reflexionsfläche 22.1, ohne zuvor auf eine der ersten Reflexionsflächen 20 oder eine der zweiten Reflexionsflächen 21 zu treffen. Der Strahlengang dieser Lichtstrahlen ist in
Der beschriebene Strahlenverlauf für die Lichtstrahlen des Teilbereichs 18.1 des Strahlenbündels 19 ist auch in
In den dargestellten Figuren weist der Umverteilungsabschnitt 15 eine ebene Längserstreckung auf, so dass sich eine gerade langgezogene Lichtaustrittsfläche 17 ergibt. Es wäre jedoch auch denkbar, dass der Umverteilungsabschnitt 15 um eine Achse, die parallel zur Richtung der von den dritten Reflexionsflächen 22 in Richtung der entsprechenden Teilbereiche 16 der Lichtaustrittsfläche 17 umgelenkten Lichtstrahlen verläuft, gebogen ausgestaltet ist. Dadurch kann eine gebogene langgezogene Lichtaustrittsfläche 17 erzeugt werden, deren Verlauf beispielsweise einem Randbereich des Gehäuses 2 der Beleuchtungseinrichtung 1 folgt oder durch die besondere Designaspekte realisiert werden können.In the illustrated figures, the
Anhand der Figuren ist zu erkennen, dass sämtliche Reflexionsflächen 20, 21, 22 eben ausgebildet sind. Es wäre jedoch auch denkbar, dass die Reflexionsflächen 20, 21, 22 gewölbt ausgebildet werden. Ferner wäre es denkbar, dass die Reflexionsflächen 20, 21, 22 nicht alle in einem 45°-Winkel bezüglich der auftreffenden Lichtstrahlen (bzw. bezüglich der Hauptabstrahlrichtung 11 der Lichtquelle 10) geneigt sind, sondern einzelne oder alle Reflexionsflächen 20, 21, 22 in einem anderen Winkel geneigt sind. Damit könnte bspw. sichergestellt werden, dass die in dem Umverteilungsabschnitt 15 propagierenden Lichtstrahlen bei einem gebogenen Verlauf des Umverteilungsabschnitts 15 auf die im Strahlengang jeweils nachgeordnete Reflexionsflächen 21, 22 treffen.It can be seen from the figures that all reflection surfaces 20, 21, 22 are planar. However, it would also be conceivable that the reflection surfaces 20, 21, 22 are formed arched. Furthermore, it would be conceivable that the reflection surfaces 20, 21, 22 are not all tilted at a 45 ° angle with respect to the impinging light beams (or with respect to the
In
Claims (15)
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DE102017112805.0A DE102017112805A1 (en) | 2017-06-09 | 2017-06-09 | Transparent component arrangement of a luminaire module and luminaire module with such a transparent component arrangement |
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EP3412963A1 true EP3412963A1 (en) | 2018-12-12 |
EP3412963B1 EP3412963B1 (en) | 2020-12-23 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023109306A1 (en) * | 2021-12-13 | 2023-06-22 | 常州星宇车灯股份有限公司 | Thick-wall member structure, light-emitting device, and light-emitting method |
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EP0940625A2 (en) * | 1998-03-03 | 1999-09-08 | Ford Global Technologies, Inc. | A dimpled manifold optical element for a vehicle lighting system |
DE102005003367A1 (en) * | 2005-01-24 | 2006-07-27 | Schefenacker Vision Systems Germany Gmbh | Light unit with light divider |
US20110216549A1 (en) * | 2010-03-05 | 2011-09-08 | Takashi Futami | Vehicle light unit and vehicle light |
FR2966224A1 (en) * | 2010-10-19 | 2012-04-20 | Valeo Vision | Lighting or signaling device for production of luminous flux to e.g. indicate of motor vehicle, has guiding layer that is provided with reflection unit to direct rays of collimated beam toward guiding layer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5931576A (en) | 1996-02-26 | 1999-08-03 | North American Lighting, Inc. | Optical coupler for distributive lighting system |
DE102014218991A1 (en) | 2014-09-22 | 2016-03-24 | Automotive Lighting Reutlingen Gmbh | Luminaire for a motor vehicle |
-
2017
- 2017-06-09 DE DE102017112805.0A patent/DE102017112805A1/en not_active Withdrawn
-
2018
- 2018-06-11 EP EP18177056.1A patent/EP3412963B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0940625A2 (en) * | 1998-03-03 | 1999-09-08 | Ford Global Technologies, Inc. | A dimpled manifold optical element for a vehicle lighting system |
DE102005003367A1 (en) * | 2005-01-24 | 2006-07-27 | Schefenacker Vision Systems Germany Gmbh | Light unit with light divider |
US20110216549A1 (en) * | 2010-03-05 | 2011-09-08 | Takashi Futami | Vehicle light unit and vehicle light |
FR2966224A1 (en) * | 2010-10-19 | 2012-04-20 | Valeo Vision | Lighting or signaling device for production of luminous flux to e.g. indicate of motor vehicle, has guiding layer that is provided with reflection unit to direct rays of collimated beam toward guiding layer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023109306A1 (en) * | 2021-12-13 | 2023-06-22 | 常州星宇车灯股份有限公司 | Thick-wall member structure, light-emitting device, and light-emitting method |
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DE102017112805A1 (en) | 2018-12-13 |
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