CN104235764A - optical conductor used for vehicle lighting device - Google Patents
optical conductor used for vehicle lighting device Download PDFInfo
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- CN104235764A CN104235764A CN201410275735.5A CN201410275735A CN104235764A CN 104235764 A CN104235764 A CN 104235764A CN 201410275735 A CN201410275735 A CN 201410275735A CN 104235764 A CN104235764 A CN 104235764A
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- Prior art keywords
- longitudinal axis
- section
- coupling
- optically
- light
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/249—Light guides with two or more light sources being coupled into the light guide
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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]
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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
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/241—Light guides characterised by the shape of the light guide of complex shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
Abstract
The invention relates to an optical conductor having a tubular base body. The base body has a closed inner surface along a longitudinal axis and an outer surface so as to form an inner cavity extending along the longitudinal axis, the inner cavity is along the longitudinal axis and opens in a coupling input direction along the longitudinal axis. The base body has a coupling input section in the coupling input direction, to which at least one light coupling input face is disposed, and the base body has a coupling output section in the opposite direction of the coupling input direction along the longitudinal axis having a light outcoupling surface having a light coupling output face. The basic body is delimited by a deflecting surface such that light, which is through the light incident surface in the basic body can be coupled in that, after total internal reflection at the deflection in such a way through the light outcoupling surface is coupled out to the light having a directional component radial to the longitudinal axis.
Description
Technical field
The present invention relates to a kind of optical conductor that can be used in lighting assembly for vehicles.
Background technology
Usually wish to obtain in the field of lighting assembly for vehicles around axis distribution, particularly around the Light distribation of axis radial directed, this Light distribation is utilized to supply other optical elements, as reflector or optical conductor, to produce the desired injection Light distribation of lighting device.
Usually LED light source is used in the lighting assembly for vehicles in modern times.Such LED light source is configured to LED chip mostly, and this LED chip has substantially smooth light emergence face and light is penetrated perpendicular to light emergence face around main injection orientation average.In addition, in a lighting device, usually multiple light source is used, so that the intensity needed for producing.Described multiple light source example is arranged on a circuit board abreast.Therefore the light source producing original radial direction injection in such embodiments in principle is problematic.
In EP 1 691 130 A1, such as describe a kind of lighting device, can make to be shaped in a radial distribution from multiple light being arranged side by side LED chip on a circuit board by this lighting device.This lighting device comprises a columniform hollow body as optical conductor, and this optical conductor opens wide along longitudinal axis in one direction.Hollow body has circular, the banded input of the light around longitudinal axis coupling surface on the direction that it opens wide, and this light input coupling surface extends perpendicular to longitudinal axis.Hollow body have on the end that it is contrary equally around, the banded and light output coupling surface extended perpendicular to longitudinal axis.Multiple light that LED is on a circuit board set circularly can be supplied by light input coupling surface.Optical conductor is located like this at this, make its longitudinal axis perpendicular to this circuit board extend and the luminous energy penetrated by LED by light input coupling surface coupling be input in hollow body.Be provided with in light path after optical conductor and independent turn to body.This turns to body to have reflecting surface, this reflecting surface around optical conductor optically-coupled output face protuberance and be unlimited in a radially outward direction about longitudinal axis.The light guided in optical conductor by optically-coupled output face out and then substantially spread along longitudinal axis to reflecting surface.Radial Light distribation is produced by reflection on the reflecting surface.Therefore when manufacturing this lighting device, multiple component (optical conductor, is turned to body ...) mutual orientation and interfixing.Each component makes independently of one another.Thus, manufacture and assembling may become and expend and costliness.
Summary of the invention
Task of the present invention is, with simple, reliably and the method for economy produce desired by Light distribation.Particularly should supply multiple light source to Light distribation.
Described task is had the optical conductor of feature described in claim 1 solved by a kind of.Favourable embodiment draws by dependent claims and following description.
Optical conductor has the matrix being configured to tubular, hollow body, and this matrix has the inner surface closed around longitudinal axis and has the outer surface closed around this longitudinal axis, thus forms inner chamber that extend along longitudinal axis, that defined by inner surface.This inner chamber opens wide along longitudinal axis at least in one direction, and this direction is hereinafter referred to as coupling input direction.Matrix has coupling inflow section and is coupled inflow section and defines on coupling input direction in other words on coupling input direction.Coupling inflow section is provided with at least one for optically-coupled being input to the optically-coupled input face in matrix.Matrix has the coupling output section with optically-coupled output face along longitudinal axis on the direction contrary with coupling inflow section, and this optically-coupled output face is used for light from matrix coupling output.
Matrix is defined by the outer surface closed around longitudinal axis on the direction deviating from longitudinal axis by the inner surface closed around longitudinal axis towards inner chamber like this at this, and making can be directed towards coupling output section when inner full-reflection on inner surface and outer surface in the base by the light of optically-coupled input face coupling input.
Basic conception of the present invention is, matrix is defined by steering surface, and this steering surface is arranged between optically-coupled input face and optically-coupled output face in the optical path in order to be input in matrix and directed in this matrix light by the coupling of optically-coupled input face.Steering surface is established as and is provided for directed light and can be diverted when inner full-reflection.Turn to and carry out in matrix thus.Steering surface is directed like this at this, make all turn on steering surface after had by optically-coupled output face light out common relative to longitudinal axis durection component radially.Particularly, the durection component of common radial direction point to identical (about two radial direction that can expect towards longitudinal axis or deviate from longitudinal axis).Radial direction will be different from towards the direction of longitudinal axis and the direction deviating from longitudinal axis in this respect.There is the radial direction that two possible thus.Such as, when light from longitudinal axis perpendicular to when all extending radially outwardly in the plane of longitudinal axis, light has common radial direction component.
Particularly steering surface is so formed, and makes the light be totally reflected all have the durection component in this radial direction (that is towards longitudinal axis or deviate from longitudinal axis) thereon.
Steering surface makes light particularly turn to like this, and it is maximum for making by the radial direction in the durection component of the light of optically-coupled output face coupling output in the durection component of longitudinal axis.
Steering surface can be configured to the section of inner surface or outer surface in principle, but or departs from from these faces by seamed edge or median surface.
Utilize and can obtain desired Light distribation in a simple manner according to optical conductor of the present invention.Particularly can realize radial light source.Multiple light source, particularly LED can be provided to Light distribation according to embodiment of the present invention.These light sources can form in this wise and arrange, and they are penetrated (light) with being arranged essentially parallel to longitudinal axis.Multiple light source can arrange on a circuit board abreast, and this can produce intensive Light distribation.
Formula is particularly integrally constituted according to optical conductor of the present invention.Particularly, coupling output section is integrally connected with coupling inflow section.Inner surface, outer surface and steering surface are the defining surface of a unique main body thus.Preferably, pipe body is only made up of matrix.This can realize simply, reliably and the manufacture of economy.Matrix such as can in a simple manner with injection molding forming method manufacture.In order to obtain radial Light distribation, multiple element mutual orientation need not be made and each other by fixing at this, as being this situation in known solution.
Inner surface is perpendicular to usually having the trend (trend that particularly close, disjoint curve itself) simply closed around longitudinal axis in the cross section of longitudinal axis.Corresponding content is applicable to outer surface.Perpendicular in the cross section of longitudinal axis, inner surface and/or outer surface preferred smooth ground that is without extending bendingly.Preferably, matrix local has the shape of common hollow cylinder, and the inwall of this hollow cylinder and/or outer wall limit along the translation of longitudinal axis respectively by (the particularly simply closing) curve closed around longitudinal axis.By the shape of inner surface and/or outer surface, Light distribation can be affected, this Light distribation when use there is the optical conductor of light source by optically-coupled output face out.
Inner surface and/or outer surface are perpendicular to particularly having circular, oval or avette trend in the cross section of longitudinal axis.Matrix preferably at least locally has the shape of the hollow cylinder extended around longitudinal axis, and the wall of this hollow cylinder is formed between the interior and exterior surfaces.
The described radial direction component principle of the light of coupling output can deviate from longitudinal axis point to, preferably like this, make light on the direction deviating from longitudinal axis by optically-coupled output face coupling output.But also can expect, first the light of coupling output have towards the radial direction component of longitudinal axis, and then after intersection, deviate from longitudinal axis and extend with radial direction component in the region of longitudinal axis in remaining light path, if desired.
Inner surface and/or outer surface are preferably formed like this, that is, the wall thickness of matrix is increasing in the trend of coupling output section from coupling inflow section.Wall thickness represents the distance of outer surface and inner surface here, such as, perpendicular to observe in the section of longitudinal axis.This embodiment causes, and is aiming at increasing light beam directed in the wall between the interior and exterior surfaces of matrix is in multiple total reflection from coupling inflow section to the trend of coupling output section around the direction of longitudinal axis.Thus, pass through to reduce in the total reflection deviated from each other between the inner surface of extension and outer surface by the beam angle of the light beam of optically-coupled input face coupling input.In addition the embodiment by having the wall deviating from extension each other simplifies manufacture.Such as, matrix can manufacture in injection forming mold, and in a simple manner on the direction of the wall thickness widened (that is in direction of coupling output section) take out from injection forming mold.Matrix is particularly configured to without side recessed.
The shape of matrix can construct further, can realize the optically-coupled input of light sources a large amount of as far as possible.For this reason, such as inner surface and/or outer surface have distance from longitudinal axis, and this distance at least local reduces along moving towards from coupling inflow section to coupling output section.Inner surface and/or outer surface such as have larger distance from longitudinal axis in the region internal ratio of coupling inflow section in the region of coupling output section.Thus, inner chamber can in the region internal ratio of coupling inflow section all the other trends at matrix, especially than having larger cross-sectional area (observing perpendicular to longitudinal axis) in coupling output section.The size of the distance of inner surface and/or the outer surface cross-sectional area of inner chamber in other words determines the extension size of the optically-coupled input face arranged around longitudinal axis.The light source that thus described embodiment can realize larger quantity is arranged around longitudinal axis like this, and the light sent can be supplied in matrix by optically-coupled input face.
The optical path of coupling output obtains to durection component basically by the total reflection on steering surface.Particularly, steering surface is formed like this, makes light directed in the base on steering surface, have desired radial direction component after total reflection.The other direction of light changes being undertaken by during optically-coupled output face coupling output, such as, can pass through refraction.Thus, optically-coupled output face additionally can be configured to the durection component of light with radial direction for giving coupling output.Steering surface also can be formed like this, and the light of coupling output is sent from virtual focus.
Steering surface can limit as follows, that is, inner surface and/or outer surface have radially outward or radially-inwardly (about longitudinal axis) trend of bending at it from coupling inflow section to the trend of coupling output section.The bending of such formation can be limited to the transition of steering surface.If such as inner surface is at bent outward folding radial from coupling inflow section to the trend of coupling output section, then light can by the total reflection directional steering radially on the inner surface of bending.The section of bending just forms steering surface.
But steering surface also can to move towards realization without what bend.Such as can expect, inner surface and/or outer surface radially outward deviate from longitudinal axis from coupling inflow section to the trend of coupling output section along it and bend in the region of coupling output section.Such as, the matrix of tubulose can be dispersed the region inner funnel shape of coupling output section.The bending preferably continuous print of inner surface and/or outer surface and there is continuous print curvature, particularly without bending.By the total reflection on bandy outer surface, light directed between the interior and exterior surfaces in the base radially outward deflects.The Light distribation with radial injection component can be obtained thus as desired.Therefore the radially outward bending region of outer surface can limit steering surface.
Optically-coupled output face can be formed by the wall extended between the interior and exterior surfaces in an advantageous manner in (particularly in above-mentioned embodiment), and this wall defines matrix.
In principle, steering surface can be formed by the section of inner surface.Light then by the total reflection on steering surface preferably with radial direction durection component turn to away from longitudinal axis.Optically-coupled output face then can be configured to the section of outer surface.
But also can expect, steering surface is formed by the section of outer surface.In this case, light can by the total reflection on steering surface with radial direction durection component turn to towards longitudinal axis.Optically-coupled output face then advantageously can be configured to the section of inner surface.In such embodiments, light can first towards longitudinal axis that is radially inwardly by optically-coupled output face coupling output, intersect in the region of longitudinal axis and then with radial direction durection component disperse about longitudinal axis.Steering surface is such as configured to the section of the conical side surface around longitudinal axis.Particularly, steering surface has the shape of the circular segments of the conical side surface come from around longitudinal axis.By observing in the section of longitudinal axis, steering surface particularly angularly extends relative to longitudinal axis.Therefore, can give the optical path that reflects wherein to durection component.
According to a basic sides of the present invention, optically-coupled output face extends obliquely about optically-coupled input face.Particularly preferably be, optically-coupled output face almost extends perpendicular to optically-coupled input face.Optically-coupled output face is preferably arranged essentially parallel to longitudinal axis and extends, and smooth by being preferably in the section of longitudinal axis.Perpendicular in the section of longitudinal axis, optically-coupled output face particularly have closed, around the shape of longitudinal axis, such as circular, oval or avette.By this embodiment of optically-coupled output face, the Light distribation of injection can be affected.Optically-coupled output face is preferably zonally around longitudinal axis.It is continuous print particularly.Particularly, it is parallel to longitudinal axis extension.Such as can expect, optically-coupled output face is configured to section, the particularly circular segments of the cylindrical side around longitudinal axis.
According to a preferred embodiment of the present invention, optical conductor have radially outward stretch out, preferably around the coupling output projection of longitudinal axis.Optically-coupled output face is arranged in coupling output projection.Coupling output projection is particularly configured to the protuberance of the ring-band shape of matrix, and is integrally connected with matrix.Thus, coupling output projection be configured to flange shape or ring-band shape around.Comprise in other words in the region that coupling output projection is preferably arranged on coupling output section or form this coupling output section.Thus, coupling output projection is preferably arranged on the end contrary with coupling inflow section of matrix.Optically-coupled input face is preferably arranged like this, makes it radially outward define coupling output projection about longitudinal axis.
For further embodiment, outer surface can be radial outward-dipping and be transitioned in coupling output projection from coupling inflow section to the trend of described coupling output section at it.Such as, outer surface can have the intermediate incline of radially outward toppling over about longitudinal axis, and this intermediate incline is transitioned in coupling output projection.In transition part between outer surface and coupling output projection, outer surface can have the bending around longitudinal axis thus.Intermediate incline is particularly configured to the section of the conical side surface around longitudinal axis, and this conical side surface is unlimited on the direction deviating from coupling inflow section.
Due to intermediate incline, the light directed in the base of greater part can incide on steering surface, and is not reflected in the region of the transition part to coupling output projection on the outer surface in advance.Thus, most light directed in the base can import in coupling output projection.
In principle, coupling inflow section and coupling output section define matrix respectively in the opposite direction.But also can expect, matrix has other section, and these sections are such as protruding from coupling inflow section and/or coupling output section on the direction of longitudinal axis.Such section such as may be used for optical conductor to be fixed in lighting device, and does not hinder light characteristic.Outstanding section such as can be configured to for fixing pin or clip.
Matrix can be formed like this, that is, inner chamber opens wide along longitudinal axis in two opposite directions, such as, with the form of hollow pipe.But also can expect, inner chamber is closed by lid section on the direction contrary with coupling inflow section.Dirt such as can be avoided thus to invade in inner chamber.Lid section is particularly without optical effect.
Optically-coupled input face is preferably configured to substantially smooth.It particularly extends perpendicular to longitudinal axis.But also can expect, optically-coupled input face is configured to the section (particularly circular segments) of the conical side surface around longitudinal axis, and this conical side surface is opened towards coupling output section.Increase the face of optically working of optically-coupled input face thus.
Optically-coupled input face is such as configured to the wall of matrix, and this wall extends between the interior and exterior surfaces and defines matrix.
Smooth, be substantially perpendicular to optically-coupled input face that longitudinal axis extends and can realize being input to being arranged essentially parallel to the optically-coupled that longitudinal axis penetrates by light source in optical conductor in an efficient way.
Optically-coupled output face can as set forth preferred be configured to around longitudinal axis, the face that is particularly parallel to longitudinal axis orientation.With the smooth optically-coupled input face extended perpendicular to longitudinal axis in combination, then can be coupled in the light that longitudinal axis penetrates by multiple source parallel and to be input in optical conductor and with the durection component of desired radial direction through optically-coupled output face coupling output.Utilize such optical conductor, the light of multiple LED be such as arranged on a common smooth circuit board can be transformed into radial light distribution effectively, described multiple LED by light with the main injection direction injection perpendicular to this circuit board.
Optically-coupled input face can be configured to zonally around the face of longitudinal axis, and this face diameter is to extend consistently in longitudinal axis that is extending consistently perpendicular in the plane of longitudinal axis.
But, optically-coupled input face also can have multiple face section arranged around longitudinal axis.For this reason, coupling inflow section can have multiple dividually along the importing section that longitudinal axis extends, and these import section and arrange around longitudinal axis, wherein, each importing section are provided with a face section of optically-coupled input face.Import section can be formed in the following way, that is, matrix has multiple cutting in the region of coupling inflow section, and these cuttings pass completely through matrix from inner surface to outer surface and extend in the direction of coupling output section on cutting length.Between two such cuttings, limit one respectively import section, this importing section imports section with other at least to be separated by cutting and spaced apart.
Start proposing of task also to be solved by a kind of lighting assembly for vehicles, this lighting device comprises optical conductor and multiple light source, particularly LED of a described type.Optical conductor and light source are so relative to each other arranged, and the luminous energy penetrated by light source is input in the matrix of optical conductor by the coupling of optically-coupled input face.Light source can be formed like this, and light is spatially sent around main injection direction by equably.The light of described multiple light source (LED) is radially transformed into the Light distribation with desired durection component relative to longitudinal axis by optical conductor.
The LED used can have the light emergence face of smooth extension substantially respectively, as this is common in LED chip.LED particularly can be arranged on smooth circuit board and spatially to be sent along main injection direction equably by light, and this main injection direction is substantially perpendicular to circuit board and extends.Optical conductor is such as arranged like this, and longitudinal axis is extended perpendicular to circuit board (and being particularly parallel to main injection direction).Described multiple light source (LED) is such as arranged, such as, equidistantly, particularly along round wire, ellipse or ovals around longitudinal axis.Particularly, each light source is arranged to the trend of following optically-coupled input face.Certainly, also can be provided with multiple separately be not be arranged on the light source (LED) on a common circuit board.Produce radial Light distribation according to photoconduction physical efficiency of the present invention, this Light distribation is supplied by multiple light source such as penetrated along main injection direction.
Below with reference to the accompanying drawings all the other details of the present invention and favourable embodiment is set forth.
Accompanying drawing explanation
In figure:
Fig. 1 illustrates the sketch according to optical conductor of the present invention with perspective view,
Fig. 2 illustrates the local of the longitudinal section of the optical conductor according to Fig. 1,
Fig. 3 illustrates another embodiment according to optical conductor of the present invention,
Fig. 4 illustrates the local of the longitudinal section of the optical conductor according to Fig. 3,
Fig. 5 illustrates another embodiment according to optical conductor of the present invention, longitudinal section, partial view,
Fig. 6 illustrates the longitudinal section of another embodiment according to optical conductor of the present invention,
Fig. 7 illustrates the longitudinal section of another embodiment,
Fig. 8 illustrates the longitudinal section of another embodiment, and
Fig. 9 illustrates the perspective view of another embodiment according to optical conductor of the present invention.
Detailed description of the invention
In the following description and in the accompanying drawings, identical Reference numeral is used respectively for feature corresponding or identical each other.
Fig. 1 illustrates an optical conductor 10 with a tubular matrix 12, and this matrix is closed around a longitudinal axis 14.Matrix 12 is defined towards longitudinal axis 14 by an inner surface 16 around longitudinal axis 14.On the direction deviating from longitudinal axis 14, matrix 12 has an outer surface 18, and this outer surface is around longitudinal axis 14.Inner surface 16 is around an inner chamber 20, and this inner chamber extends along longitudinal axis 14.Therefore matrix 12 has the shape of the hollow body around longitudinal axis 14 generally, and this hollow body has the wall thickness limited between inner surface 16 and outer surface 18.
Matrix 12 in two directions longitudinally 14 opens wide in shown example.But also can expect, inner chamber 20 is in one direction along longitudinal axis 14, such as upwards closed by a lid section (not shown) in FIG.
Inner chamber 20 is under any circumstance all parallel to longitudinal axis 14 along a coupling input direction 22 and opens wide around longitudinal axis 14.The section towards coupling input direction 22 of matrix 12 limits a coupling inflow section 24.Matrix 12 has a coupling output section 26 along longitudinal axis 14 on the direction contrary with coupling inflow section 24.
When using optical conductor 10 in lighting device, coupling inflow section is used for optically-coupled is input in matrix.For this reason, matrix 12 has the optically-coupled input face 28 (see Fig. 1,2) around longitudinal axis 14, preferably closed continuously band shape in coupling inflow section.The wall thickness of this optically-coupled input face between inner surface 16 and outer surface 18 extends.
Optically-coupled input face 28 extends in the plane perpendicular to longitudinal axis 14.This can realize, and the light of multiple light source 30 (simplify in FIG and illustrate) around longitudinal axis 14 setting is input in matrix 12 by optically-coupled input face 28 coupling.Coupling output section 26 is directed to when the inner full-reflection of light then between inner surface 16 and outer surface 18 of coupling input.
Coupling output section 26 has an optically-coupled output face 32 in order to coupling output light, this optically-coupled output face is formed by outer surface 18 face section in shown example, and it is reverse with the inflow section 24 that is coupled that this face section is parallel to longitudinal axis 14 ground along the bearing of trend of matrix 12.
Defined by a steering surface 34 in the light path of matrix 12 between optically-coupled input face 28 and optically-coupled output face 32.This steering surface is formed like this, make after being input in matrix 12 by optically-coupled input face 28 coupling as necessary by the directed light of the total reflection on inner surface 16 and outer surface 18 after the inner full-reflection on steering surface 34 by optically-coupled output face 32 coupling output from matrix 12, wherein, for the major part of light, the radial durection component in longitudinal axis 14 is maximum.
This can find out in Fig. 2 of longitudinal section that the wall formed between inner surface 16 and outer surface 18 by matrix 12 is shown.Light is arranged essentially parallel to longitudinal axis 14 with main injection direction (that is spatially sending the direction of light energy equably) and penetrates by the light source 30 shown out.The light of injection is input in matrix 12 by optically-coupled input face 28 coupling.
Steering surface 34 is arranged like this, makes the condition most light guided in matrix 12 being met to total reflection.Can expect according to embodiment, for indivedual light path, particularly for the light path incided with steep angle on outer surface 18 and/or inner surface 16, no longer to meet on steering surface 34 total reflection condition and thus individual rays sent by steering surface 34.According to efficiency requirements, this is tolerable but is not desired in principle.For the light that major part is directed in optical conductor, steering surface 34 radially outward deviates from the reflection of longitudinal axis 14.All have a common durection component by the light of optically-coupled output face 32 coupling output.
In all of the embodiments of the present invention, steering surface can be provided with reflecting layer.Reflect thus and allly incide the light on steering surface and thus raise the efficiency.At this, to be only provided with reflecting layer just enough for steering surface.All the other defining surfaces of matrix can keep nonmetallic coating in principle, to save cost.
Inner surface 16 preferably has circular trend in the section perpendicular to longitudinal axis 14, and this is as shown in Figure 1.Corresponding content is applicable to outer surface 18.Thus inner chamber 20 has circular cross section.Because optically-coupled input face 28 extends between inner surface 16 and outer surface 18 perpendicular to longitudinal axis 14, so optically-coupled input face 28 has the shape of the annulus around longitudinal axis 14 in shown example.
Steering surface 34 is configured to the face of the band shape around longitudinal axis 14 equally.In shown example, steering surface 34 is configured to the circular segments of conical side surface, and this conical side surface to open wide around longitudinal axis 14 around longitudinal axis 14 with the cross section of circle (perpendicular to longitudinal axis) on the direction deviating from coupling inflow section 24.Steering surface 34 extends thus and radially outward tilts about longitudinal axis 14 between inner surface 16 and outer surface 18.It also tilts relative to optically-coupled input face 28.
According to another kind of view mode, steering surface 34 limits as follows, namely inner surface 16 has folding line 36 from coupling inflow section 24s at it in the example of fig. 1 in the trend in the direction of coupling output section 26, and inner surface 16 radially outward bends along this folding line.Folding line 36 is particularly around the round wire of longitudinal axis 14, and this round wire extends (see Fig. 1) in the plane perpendicular to longitudinal axis 14.
The optically-coupled output face 32 formed by outer surface 18 end section in shown example at matrix 12 by preferably flatly extending in the section of longitudinal axis 14.In shown example, optically-coupled output face 32 is formed by the cylindrical side section of the ring-type around longitudinal axis 14.As shown in FIG. 1, optically-coupled output face 32 can be comprised by outer surface 18.
Optically-coupled output face 32 is about optically-coupled input face 28 and tilt about steering surface 34.
As found out in fig 1 and 2, inner surface 16 and outer surface 18 are preferably formed like this, that is, the wall thickness surrounded between which of matrix 12 is increasing in the trend of coupling output section 26 from coupling inflow section 24s.Inner surface 16 and outer surface 18 particularly flatly extend and form one each other in the angle of divergence opened in the direction of coupling output section 26 from coupling inflow section 24 in the section by longitudinal axis 14.This angle of divergence is preferably selected to enough little, makes the condition meeting total reflection on all reflectings surface.Be proved to be advantageously, inner surface 16 and outer surface 18 are formed in the angle between 1 degree to 7 degree each other.
In the optical conductor 40 that Fig. 3 and 4 shows out, matrix 12 its with on the contrary direction of coupling inflow section 24 along longitudinal axis 14 have one around longitudinal axis 14, radially outward stretch out, the coupling output projection 42 of ring-band shape.This coupling output projection forms the coupling output section 26 of matrix 12 in shown example.Coupling output projection 42 in a radially outward direction by one around longitudinal axis 14, be parallel to the optically-coupled output face 32 that longitudinal axis 14 extends and define.In shown example, optically-coupled output face 32 is configured to the circular segments of the cylindrical side closed around longitudinal axis 14.
At it from being coupled inflow section 24s in the trend in the direction towards coupling output projection 42, outer surface 18 forms intermediate incline 44.This intermediate incline defines in the following way, that is, outer surface 18 radial bent outward folding in the region of intermediate incline.This intermediate incline 44 is transitioned in a raised face (RF) 46, and this raised face (RF) is substantially perpendicular to longitudinal axis 14 and extends and zonally around this longitudinal axis.Raised face (RF) 46 defines coupling output projection 42 on the direction towards coupling inflow section 24.In shown example, intermediate incline 44 not only tilts about outer surface 18 but also about raised face (RF) 46.In transition part between intermediate incline 44 and raised face (RF) 46, the surface of matrix 12 forms again a folding line 48, and this folding line is around longitudinal axis 14 (being circular in figure 3).
As what can find out according to the sectional view of Fig. 4, intermediate incline 44 causes light directed in the base no longer can therefore can directly be entered into coupling output projection 42 and turn on steering surface 34 by reflection on outer surface 18 in the region of the transition part to coupling output projection 42.
Fig. 5 illustrates for another operational feasibility according to optical conductor of the present invention.Here is shown a local of the longitudinal section of matrix 12, wherein, section extends through longitudinal axis 14.
Steering surface 34 is formed in the embodiment illustrated in the following way, that is, matrix 12 coupling output section 26 region inner funnel shape expand.For this reason, inner surface 16 and outer surface 18 bend along radially outward deviating from longitudinal axis 14 from coupling inflow section 24s to the corresponding trend of coupling output section 26.The bending region of inner surface 16 forms steering surface 34 here.Light directed in matrix 12 radially outward turns to (see Fig. 5) after reflecting on steering surface 34.
Show out the embodiment of matrix 12 in figs. 6 and 7 with longitudinal section, the optically-coupled input face 28 of increase can be provided by these embodiments and therefore can use the light source 30 of larger quantity.But, shown embodiment also provides other advantages in addition, and thus the mutual larger Distance geometry of such as light source 30 better cools.
In the view of Fig. 6 and 7, inner surface 16 and outer surface 18 extend like this, make matrix 12 in the region of coupling output section 26, have larger distance in the region internal ratio of coupling inflow section 24 from longitudinal axis 14.Thus the inner chamber 20 surrounded by inner surface 16 has the larger cross-sectional area perpendicular to longitudinal axis 14 in the region internal ratio of coupling inflow section 24 in the region of coupling output section 26.
Apply multiple light source 30 in the case of fig. 6, light spatially can be penetrated along main injection direction 50 equably by these light sources.In shown example, this main injection direction 50 forms one for each light source 30 and longitudinal axis 14 and is greater than 0 degree and be less than the angle of 90 degree.Optically-coupled input face 28 is particularly in this wise around longitudinal axis 14, the light of each light source 30 is made effectively to be input in matrix 12 by optically-coupled input face 28 coupling, wherein, corresponding main injection direction 50 for each light source 30 perpendicular to optically-coupled input face 28.This can such as realize in the following way, that is, optically-coupled input face 28 is configured to the circular segments of conical side surface, and this conical side surface is around longitudinal axis 14 and open wide at the direction upper hopper shape towards coupling output section 26.
Light source 30 is arranged like this according to the embodiment of Fig. 7, makes corresponding main injection direction 50 all in parallel with each other and to be particularly also parallel to the longitudinal axis 14 of matrix 12 directed.This can such as realize in the following way, that is, multiple light source 30 being configured to LED chip is arranged on a common smooth circuit board.This circuit board particularly extends perpendicular to longitudinal axis 14.
Be input in matrix 12 to be effectively coupled by multiple light all penetrating the LED30 of light along main injection direction 50, optically-coupled input face 28 extends perpendicular to longitudinal axis 14 in shown example (Fig. 7).At this, the band shape that light source 30 preferably follows optically-coupled input face 28 around longitudinal axis 14 is moved towards to arrange.The setting of light source 30 and optically-coupled input face 28 is preferably such, and when observing along longitudinal axis 14, light source 30 is optically coupled input face 28 completely and covers.
A kind of embodiment according to optical conductor of the present invention shown in Figure 8, wherein, the light of coupling output mainly has radially towards the durection component of longitudinal axis 14.The light of coupling output can intersect and afterwards radially in the concentric region around longitudinal axis 14.Such coupling light exports and can realize in the following way, that is, steering surface 34 is observed and tilted towards longitudinal axis 14 along the trend from coupling inflow section 24 to coupling output section 26 in the vertical section by longitudinal axis 14.Such as, steering surface 34 can be formed in the following way, that is, outer surface 18 its from coupling inflow section 24s to the trend of coupling output section 26 in radial direction inwardly longitudinal axis 14 bend.In this case, coupling-out face 32 is formed by one of inner surface 16 section reverse with the inflow section 24 that is coupled.
According to optical conductor 60 shown in Figure 9, other embodiments according to optical conductor of the present invention are described.Optically-coupled input face 28 need not be configured to continuous print, consistently around the face of longitudinal axis 14 according to principle aspect of the present invention.But optically-coupled input face 28 can have multiple around longitudinal axis 14 arrange face section 28 ', 28 ", 28 " ' ...This can realize in the following way, namely, coupling inflow section 24 comprise multiple separate respectively along longitudinal axis 14 extend importing section 62, wherein, each importing section 62 has a face section 28 ', 28 of optically-coupled input face 28 ", 28 " ' ...Import the protuberance that section 62 such as can be configured to the finger-like of columniform matrix.
Import section 62 can be formed in the following way, namely, matrix 12 has multiple cutting 64 in the region of coupling inflow section 24, these cuttings respectively at its wall thickness from inner surface 16 surface 18 toward the outside through matrix 12 and extending from corresponding optically-coupled input face 28s towards the cutting length of coupling output section 26.Between every two such cuttings 64, just extend one import section 62, this importing section imports section 62 with all the other, and to pass through cutting 64 spaced apart.Each importing section 62 can arrange oneself a light source 30, and the light of this light source can by the corresponding face section 28 ', 28 of optically-coupled input face 28 ", 28 " ' ... coupling input.Coupling input efficiency can be improved by this embodiment importing section 62 and affect attainable Light distribation.
Import section 62 and can have side, these sides import section 62, in other words, as the defining surface of side direction accordingly about around defining around direction of longitudinal axis 14.Side can such as from the corresponding face section 28 ', 28 of optically-coupled input face 28 ", 28 " ' ... set out and disperse parabola shapedly.Thus can having imported in section 62 the corresponding face section 28 ', 28 that be reduced by optically-coupled input face 28 ", 28 " ' side direction of the light beam of coupling input disperses.
The LED arranged along coupling-in face 28 can be same or have different characteristics such as intensity, distribution or color.For further structure, different LED can control independently of one another or control in groups.
Claims (11)
1. for the optical conductor (10 of lighting assembly for vehicles, 40, 60), comprise the matrix (12) of tubulose, this matrix has in this wise around the closed inner surface (16) of longitudinal axis (14) and has outer surface (18), thus form the inner chamber (20) extended along longitudinal axis (14), this inner chamber is upper unlimited in coupling input direction (22) along longitudinal axis (14) around longitudinal axis (14), wherein, matrix (12) has coupling inflow section (24) in coupling input direction (22), this coupling inflow section is provided with at least one optically-coupled input face (28), and matrix (12) has the coupling output section (26) with optically-coupled output face (32) along longitudinal axis (14) on the direction contrary with coupling inflow section (24), it is characterized in that, described matrix (12) is defined by the steering surface (34) in the light path be arranged between optically-coupled input face (28) and optically-coupled output face (32), this steering surface is so directed, make all had by the light of optically-coupled output face (32) coupling output after the upper inner full-reflection of steering surface (34) common relative to longitudinal axis (14) durection component radially.
2. optical conductor (10 according to claim 1,40), it is characterized in that, described inner surface (16) and described outer surface (18) are configured to, that is, matrix (12) wall thickness from coupling inflow section (24)s increased in the trend of coupling output section (26).
3. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described inner surface (16) and/or described outer surface (18) have distance from longitudinal axis (14), and this distance is reducing in the trend of coupling output section (26) from coupling inflow section (24).
4. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described inner surface (16) and/or described outer surface (18) are in the trend having radially outward from coupling inflow section (24) or radially-inwardly bend in the trend of coupling output section (26).
5. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described inner surface (16) and/or described outer surface (18) radially bend from longitudinal axis (14) in the region of coupling output section (26) with leaving.
6. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described steering surface (34) is formed by the section of inner surface (16).
7. according to the optical conductor one of claim 1 to 5 Suo Shu, it is characterized in that, described steering surface (34) is formed by the section of outer surface (18).
8. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described steering surface (34) is configured to the section of the conical side surface around longitudinal axis (14).
9. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described optically-coupled output face (32) extends obliquely about light input coupling surface (28), is particularly parallel to longitudinal axis (14) and extends.
10. according to the optical conductor one of the claims Suo Shu, it is characterized in that, described matrix (12) have radially outward stretch out, particularly around the coupling output projection (42) of longitudinal axis (14), optically-coupled output face (32) is arranged in this coupling output projection.
11. according to the optical conductor one of claim 1 to 10 Suo Shu, it is characterized in that, the coupling inflow section (24) of described matrix (12) has multiple dividually along the importing section (62) that longitudinal axis extends, these import section and arrange around longitudinal axis (14), wherein, each importing section (62) is provided with optically-coupled input face (28) face section (28 ', 28 ", 28 " ').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013211868.6 | 2013-06-21 | ||
| DE102013211868.6A DE102013211868B4 (en) | 2013-06-21 | 2013-06-21 | Light guide for automotive lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235764A true CN104235764A (en) | 2014-12-24 |
| CN104235764B CN104235764B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410275735.5A Active CN104235764B (en) | 2013-06-21 | 2014-06-19 | Optical conductor for lighting assembly for vehicles |
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| Country | Link |
|---|---|
| CN (1) | CN104235764B (en) |
| DE (1) | DE102013211868B4 (en) |
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| CN105905026A (en) * | 2015-02-19 | 2016-08-31 | 法雷奥照明公司 | Lighting device for a motor vehicle |
| CN109328281A (en) * | 2016-04-25 | 2019-02-12 | 夸克星有限责任公司 | Multiple beam car light |
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| US9081125B2 (en) | 2011-08-08 | 2015-07-14 | Quarkstar Llc | Illumination devices including multiple light emitting elements |
| WO2014124229A1 (en) | 2013-02-08 | 2014-08-14 | Quarkstar Llc | Illumination system based on active and passive illumination devices |
| WO2015010076A1 (en) | 2013-07-18 | 2015-01-22 | Quarkstar Llc | Illumination device having a light guide with leaky side surfaces |
| US9557030B2 (en) | 2013-09-17 | 2017-01-31 | Quarkstar Llc | Light guide illumination device for direct-indirect illumination |
| EP3215788B1 (en) | 2014-11-07 | 2020-08-12 | Quarkstar LLC | Troffer luminaire |
| US9348080B1 (en) | 2014-11-18 | 2016-05-24 | Quarkstar Llc | Wall wash luminaire with light guide and optical element therefore |
| FR3042846B1 (en) * | 2015-10-23 | 2017-12-01 | Valeo Vision | LIGHT DEVICE WITH OPTICAL GUIDES |
| DE102015225066A1 (en) * | 2015-12-14 | 2017-06-14 | Continental Automotive Gmbh | Display with a lighted trim |
| EP3861247B1 (en) * | 2018-10-04 | 2022-12-14 | Quarkstar LLC | Luminaire with hollow optical systems |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102013211868A1 (en) | 2014-12-24 |
| DE102013211868B4 (en) | 2018-12-27 |
| CN104235764B (en) | 2019-09-24 |
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