EP3280950A1 - Beleuchtungsvorrichtung mit strahlenblende - Google Patents
Beleuchtungsvorrichtung mit strahlenblendeInfo
- Publication number
- EP3280950A1 EP3280950A1 EP16720990.7A EP16720990A EP3280950A1 EP 3280950 A1 EP3280950 A1 EP 3280950A1 EP 16720990 A EP16720990 A EP 16720990A EP 3280950 A1 EP3280950 A1 EP 3280950A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- diaphragm
- lighting device
- lens
- optics
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
Definitions
- the invention relates to a lighting device for a motor vehicle headlight, comprising a light module having at least one light emission source, a primary optics and a secondary optics, the primary optics having at least one light-conducting attachment optics, which is adapted to light received by the at least one light emission source through at least one light exit surface of the attachment optics through to the secondary optics downstream in the optical longitudinal axis direction, and wherein the secondary optics is adapted to image a light distribution which is established on the light exit surface of the optical attachment in a front field located in front of the illumination device.
- the refractive index of lenses of an optical system also affects the imaging scale, which thus depends on the wavelength of the light. Refractive index differences between the lens material as object space and the surrounding medium air as image space lead to different magnifications of blue and red light components due to the wavelength dependence of the refractive index. Partial images, which are formed by the light of different wavelengths, are different in size. This effect is called transverse chromatic aberration, which causes fringing of the edges of an image, if they are not radial, and blurs the image. The width of the color fringes of the image is proportional to the distance from the center of the image.
- the focal length of the optical system and thus the distance of the image from the last surface of the optical system are also dependent on the refractive index of the lenses and thus on the wavelength of the light. This effect is called color longitudinal error.
- aberrations which prevent the formation of a perfect pixel in the image of an object point as possible, must generally in the construction of optical systems, especially for headlamps for motor vehicles, a compromise between the requirements for the desired optical imaging quality and the design effort can be found.
- a motor vehicle headlight with secondary optics which has an achromatically acting arrangement of two lenses with different refractive indices or with different refractive indices.
- the achromatic lens combination of a diverging lens with a condenser lens eliminates unwanted fringing.
- reflecting and / or absorbing diaphragm surfaces are arranged between a light source or a primary optic and the secondary optics such that a secondary light directed in secondary radiation directions outside the main beam direction is prevented from influencing the light distribution in advance of the headlight.
- a disadvantage of this design is at least that the achromatic lens arrangement of the secondary optics is complicated and that the overall efficiency of the headlamp is reduced by the use of lateral aperture surfaces.
- the document DE 601 31 600 T3 describes a projection headlamp with ellipsoidal reflector for motor vehicles, which is designed to generate a high beam.
- the aim of this headlamp is to create a light field in the run-up to the headlamp, which gradually becomes weaker the closer the street areas to be illuminated are in front of the headlamp. Furthermore, unwanted colorations of the light should be avoided.
- a beam diaphragm arranged such that the entire beam diaphragm above the horizontal axis containing the optical axis, in which the focal lengths of the reflector or the focal point of the converging lens , is located.
- the beam stopper has an edge profile with at least two shading regions each forming an edge, which are spaced apart in the direction of the optical axis, either one of the edges being perpendicular to a focal point of the condenser lens or the edges behind or in front of the focal point of the lens are arranged in the direction of the optical axis.
- a first, front shadowing area protrudes with its peripheral edge in the upward light beam path, while a second, in the direction of the optical axis downstream shading area protrudes with its peripheral edge in the downward light beam path.
- the focal point of the condenser lens is near the second focal length region of the reflector.
- a disadvantage of the embodiment shown in DE 601 31 600 T3 is at least that the position of the beam diaphragm with respect to the lens focal point or the focal widths of the reflector is set, which is why the position of the beam aperture can only be adapted insufficiently to different lighting tasks. Since one and the same beam aperture projects into both the downward and the upward light beam, the beam aperture must protrude comparatively far into the cone of light rays for effective shading of unwanted edge areas or stray light, thereby adversely affecting the efficiency of the headlight.
- a vehicle lamp with a special diaphragm geometry is known in order to minimize the scattered light formation of a fog lamp and to avoid self-glare.
- the edge profile of a front panel has for this purpose a central area, side areas and an upper area, which together form a triangular shape.
- the avoidance of chromatic aberrations is neither intended nor intended. Also in this embodiment can not be avoided that the efficiency of the optical system is reduced by the aperture geometry.
- a lighting device for a motor vehicle headlamp, comprising a light module with at least one light emission source, primary optics and secondary optics, the primary optics having at least one light-conducting attachment optics, which is adapted to light received by the at least one light emission source through at least one light exit surface of the attachment optics is further directed to the secondary optics downstream in the optical longitudinal axis direction, and wherein the secondary optics is adapted to image an adjusting on the light exit surface of the optical attachment light distribution in a lying in front of the illumination device front, is at least one beam stopper for shading a Lichtfarbsaums between the primary optics and the Second optics arranged, wherein the at least one beam stop an optically active first diaphragm edge for an upper light color fringe and an optical forms active second diaphragm edge for a lower Lichtfarbsaum, and the optically active diaphragm edges are each arranged in the light beam such that selectively blue boundary light rays of the Lichtfarbsaum
- shorter-wavelength blue boundary light beams are understood to be those light beams whose radiation is in a wavelength range from 405 nm to 480 nm.
- an emission wavelength of a laser diode is about 405 nm, which laser diode can also be used in the context of the invention in a lighting device.
- segmented phosphor elements are applied to the entry surfaces and excited by appropriate laser diodes.
- white light LEDs have a primary emission at wavelengths of around 450 nm.
- the beam diaphragm is particularly advantageously arranged in such a way that the blue boundary light beams of the light color fringe are selectively shaded, since in particular the blue light components in the color fringe of the spotlight in the area of the apron are clearly perceptible to the driver and unpleasant irritating play of colors disturb a desired light distribution.
- the at least one light emission source is in each case assigned and dimmable to an entrance surface of a specific optical attachment.
- the optically active diaphragm edges are expediently respectively arranged in the light beam such that red boundary light beams reach the secondary optics without shading.
- the beam stop is arranged in such a way that red boundary light beams whose radiation is in a wavelength range of 600 nm to 750 nm reach the secondary optics without shading through the beam stop as far as possible.
- the red light components in the color fringe of the headlamp in the apron area for the driver compared to the blue light components barely noticeable and disturb a desired light distribution significantly less than is the case with blue light components.
- the overall efficiency or luminous efficacy of the headlamp is only slightly reduced in this embodiment, since the red light components are not shaded or only to the lowest possible extent.
- the real light beam path in the light-conducting attachment optics comprises both direct light beams, as well as single or multiple deflected light beams, wherein the difference in distance between the red and blue boundary light beams is different perpendicular to the optical axis. Furthermore, it should be noted that the difference between the red and blue boundary light beams also depends on the material of the optical light attachment optics.
- direct light beams which have a smaller difference between the red and blue boundary light beams perpendicular to the optical axis than multiply deflected light beams, reach the secondary optics without shading their red boundary light beams.
- a smaller proportion of red limit light beams from multiply deflected light beams may possibly be obstructed from passing through the beam stopper.
- the optically active diaphragm edges project particularly advantageously between the blue boundary light beams and the red boundary light beams of the light color fringe into the light beam.
- selective blue boundary light beams in a wavelength range of 405 nm to 480 nm are shadowed by the beam aperture, while red boundary light beams in a wavelength range of 600 nm to 750 nm pass without shadowing the beam aperture.
- the at least one beam diaphragm in the case of a lighting device, may be arranged in a diaphragm plane substantially perpendicular to the optical longitudinal axis.
- the aperture edges of the beam stop are in the same aperture plane.
- the beam diaphragm can be made in one piece or in several parts.
- the at least one beam diaphragm preferably has smooth peripheral diaphragm edges without structured subdivisions such as webs, frames, reinforcements or the like, since structured or segmentally composed beam diaphragms with subdivided diaphragm edges are disadvantageously imaged as disturbing stripes in the traffic space or on a roadway.
- the arrangement of the beam aperture in a diaphragm plane, the adjustment of the beam aperture in the direction of the optical axis is particularly simple.
- the beam aperture can be made in one piece in an illumination device and have a diaphragm recess which forms a continuous optically active diaphragm edge having a first diaphragm edge portion for an upper light color fringe and a second diaphragm edge portion for a lower light color fringe, wherein the aperture edge in the installed position the encloses optical longitudinal axis.
- a one-piece beam aperture is particularly easy to manufacture and in the assembly within the lighting device.
- a one-piece beam diaphragm with a continuous, smooth-running diaphragm edge without structured subdivisions such as webs or reinforcements offers the advantage that the light distribution is imaged in advance of the illumination device without disturbing stripes.
- the beam diaphragm can be designed in two parts in a lighting device according to the invention, wherein a first diaphragm part with a first optically active diaphragm edge and a second diaphragm part with a second optically active diaphragm edge are arranged on opposite sides of the optical axis.
- the two optically active diaphragm edges on the first and on the second diaphragm part can be adapted particularly flexibly to the geometrical conditions of the beam path within a lighting device.
- the diaphragm edges can also be arranged asymmetrically with respect to a horizontal plane through the optical axis.
- the two optically active diaphragm edges are each preferably continuous smoothly without structuring, webs or interruptions, in order to ensure that the light distribution is imaged in advance of the illumination device without disturbing stripes.
- the first diaphragm part and the second diaphragm part can expediently be arranged in different diaphragm planes spaced apart from one another in the optical longitudinal axis direction.
- the diaphragm edges can be arranged particularly flexible in the beam path of the light beam to selectively shade blue Grenzlichtstrahlen the Lichtfarbsaums.
- At least one optically active diaphragm edge can be a free-form curve. Since the geometries are determined in particular by motor vehicle headlights by numerous influencing factors such as by design specifications, by authorities and by design requirements of motor vehicle manufacturers, the geometries of the diaphragm edges of the beam diaphragm must be adapted to the respective geometric specifications of the relevant motor vehicle headlight. This is most easily achieved by means of a diaphragm edge, which is designed as a free-form curve. As already stated above, the at least one optically active diaphragm edge is preferably designed as a smooth freeform curve, which has no structuring such as webs, frames or comparable interruptions.
- a smooth freeform curve can For example, serve a spline interpolation, with the help of predefined interpolation points with the aid of piecewise continuous polynomials, so-called splines, interpolated to obtain a smooth smooth, non-interrupting curve.
- the at least one beam stop in the optical longitudinal axis direction of a lens focus plane is preferably at a distance of 10% to 90%, preferably 30% to 70%, particularly preferably 50%, of an intersection distance between the lens focus plane and a lens apogee plane of the secondary optics spaced.
- the beam stop is mounted between the lens focus plane and the lens apogee plane of the secondary optics.
- a lighting device is particularly advantageous that the distance of the at least one beam stop from the lens focus plane by color sensor measurements and / or color simulation calculations as the difference of the relative difference between a shielded by the beam aperture red light component compared to the continuous red beam without beam stop in the light beam and the relative difference between a shielded by the beam aperture blue light component with respect to the continuous without beam aperture blue light component in the light beam, with a positive difference, an increased blue light component is shadowed and at a negative difference, an increased red light component is shadowed by the beam aperture.
- the beam diaphragm or the diaphragm edges of the beam diaphragm are respectively examined with different normal distances to the optical axis at the same distance of the beam diaphragm from the lens focal plane in the direction of the optical axis and thereby each optimal position of the diaphragm edges with respect to the efficiency of the illumination device, selectively blue Shade boundary light rays determined.
- these relative measurements are repeated for different distances from the lens focus plane.
- the blue light component in the light beam is determined as a function of the distance of the beam diaphragm from the lens focal point plane in the direction of the optical longitudinal axis.
- the preferred distance of the beam diaphragm or of the diaphragm edges of the beam diaphragm normal to the optical longitudinal axis is determined in each case as a compromise between the desired shadowing of the blue boundary light beams and the total efficiency of the illumination device to be achieved. Since the total efficiency of the illumination device drops with greater shadowing, the respective position of the radiation diaphragm must therefore be selected such that the shielded blue light component is higher than the proportion of shielded red boundary light beams.
- the difference of the relative difference between a shielded by the beam aperture red light component relative to the continuous without red light component in the light beam and the Relative difference between a shielded by the beam aperture blue light component over the non-beam aperture continuous blue light component in the light beam has a value of 0.1 to 0.2.
- an increased proportion of blue light is advantageously selectively masked, while the overall efficiency of the lighting device nevertheless remains high.
- the at least one beam diaphragm is mounted on a primary optics holder together with the primary optics.
- the beam aperture and the primary optics are fastened together in a particularly comfortable manner.
- the at least one radiation diaphragm is integrated into the primary optics.
- the at least one radiation diaphragm is integrated into the primary optics.
- the secondary optics comprise a projection lens with a lens entrance surface, which may be plan or spherical shaped, and a mostly aspherical lens exit surface.
- this embodiment of a lighting device according to the invention can be used in headlamps with an imaging optics.
- the light modules of such headlights are commonly referred to as light modules with intent optics and downstream projection lens.
- the lighting device is set up to produce a low-beam or high-beam distribution.
- a lighting device with the at least one beam diaphragm optionally a low beam or high beam distribution can be achieved in which each selectively blue boundary light beams are shaded in the light color fringe.
- the change between low beam and high beam is usually carried out by an appropriate design of the combination of one or more light sources with the attachment optics.
- the invention comprises a motor vehicle headlight with at least one lighting device according to the invention.
- Motor vehicle headlamps having a lighting device according to the invention are thus advantageously provided which permit a possibly "white” or color-neutral light distribution of the illuminated apron without disturbing blue color light edges.
- a motor vehicle with at least one motor vehicle headlight which is equipped with at least one lighting device according to the invention, can be specified. The aforementioned advantages of the lighting device according to the invention therefore also apply to the motor vehicle equipped with at least one motor vehicle headlight.
- FIG. 1 is an isometric view of a schematic structure of a first embodiment of a lighting device according to the invention
- FIG. 2 shows in a partial sectional view from the side of a further embodiment of a lighting device according to the invention
- FIG. 3 shows a detail view from the side of the light beam path of a direct light beam in the attachment optics
- FIG. 8 shows a side view of a lighting device according to the invention with a diaphragm position of the beam diaphragm at half the cutting distance;
- FIG. 9 shows in diagram form the course of the selection criterion A (R-B) as a function of the distance z of the beam diaphragm from the lens focal plane to determine a suitable diaphragm position in the beam path;
- Figure 10 is a schematic isometric view from the side of an alternative position of a color-correcting beam stop as part of the attachment optics mount; 11 is an isometric view obliquely from above of the color-correcting beam stop illustrated in FIG. 10 as part of the attachment optics mount;
- Fig. 12 is a front elevational view of the arrangement shown in Fig. 11;
- FIG. 13 shows in a partial sectional view obliquely from the side the course of the diaphragm edges in the example shown in FIGS. 10 to 12, together with the primary optics holder;
- Fig. 14 is a detail view from the side of the shading of boundary light rays of a direct guided in the optical attachment light beam.
- 1 illustrates a schematic structure of a first embodiment of an illumination device 1 according to the invention with a light module 2 and with at least one light emission source 10 or with at least one light emission point 10.
- a primary optics 100 which is connected here to the light emission sources 10, has a light-conducting end Transparent material existing attachment optics 102 with multiple optical fibers 102 each with light entry surfaces 101 and 103 with light exit surfaces.
- Light beams 50 which are indicated here by dashed lines, are converted from the light exit surfaces 103 of the attachment optics 102 to a secondary optic 300, which is here designed as a projection lens 303 with a lens entrance surface 301 and a lens exit surface 302 and which is spaced apart from the primary optics in the direction of an optical longitudinal axis 150 , guided.
- a secondary optic 300 which is here designed as a projection lens 303 with a lens entrance surface 301 and a lens exit surface 302 and which is spaced apart from the primary optics in the direction of an optical longitudinal axis 150 , guided.
- a radiation diaphragm 200 is arranged in an aperture plane 210 in the light beam path, wherein diaphragm edges 220 of the radiation diaphragm 200 protrude into the light beam 50 in such a way that selectively blue boundary light beams 51 or blue light components 51 of a light color fringe 250, 251, 252 of the light beam 50 are shaded during red boundary light rays 52 and red light components 52 pass through the radiation diaphragm 200 unhindered and thus reach the secondary optics 300 without shading.
- the radiation diaphragm 200 is embodied here in one piece with a diaphragm recess 215 and with a circumferential, smooth-running diaphragm edge 220.
- the z-axis direction is defined here by the direction of the optical longitudinal axis 150 of the lighting device 1.
- the diaphragm plane 210 is arranged essentially perpendicular to the optical longitudinal axis 150 or perpendicular to the z-axis direction.
- Fig. 2 shows a lighting device 1 according to the invention in a partial sectional view from the side.
- the radiation diaphragm 200 is embodied here in two parts, wherein a first diaphragm part 201 is equipped with a first, smoothly passing diaphragm edge 221 and a second diaphragm part 202 with a second diaphragm edge 222. Also, the second diaphragm edge 222 is also designed without dividing or interruptions smoothly throughout.
- the first diaphragm part 201 and the second diaphragm part 202, which together form the radiation diaphragm 200, are each arranged in the same diaphragm plane 210.
- the first diaphragm part 201 is fastened here below a horizontal plane through the optical longitudinal axis 150, while the second diaphragm part 202 provides the diaphragm edge 222 arranged above the horizontal plane through the optical longitudinal axis 150.
- the lower or first diaphragm edge 221 is here at a normal distance yi in the negative y-coordinate direction of the optical axis 150 spaced apart.
- the upper or second diaphragm edge 222 is here at a normal distance i in the positive y-coordinate direction of the optical axis 150 spaced apart.
- Light rays 50 which pass through the beam aperture 200 as well Boundary light beams 51, 52, which form a light color fringe 250, are again illustrated as dashed arrows.
- Blue boundary light beams 51 or blue light components 51 of an upper light color seam 251 and of a lower light color seam 252 are selectively shaded by the first aperture part 201 and the second aperture part 202, respectively.
- Red boundary light beams 52 and red light components 52 of the upper light color seam 251 and the lower light color seam 252 pass without shading past the diaphragm edges 221, 222 to the secondary optics.
- the diaphragm plane 210 is arranged here at a distance z from a lens focal plane 110.
- the total distance between the lens focus plane 110 and the lensapex plane 310 is referred to as the intersecting width SW.
- FIG. 3 shows a detailed view of the light beam path of a direct light beam 50 in the light-conducting attachment optics 102.
- the attachment optics 102 has a length 120 in the direction of the optical longitudinal axis 150.
- Light which is generated in the light emission sources 10, passes at the light entrance surface 101 into the light-conducting attachment optics 102 and leaves them again at the opposite light exit surface 103.
- the individual light guides of the light-conducting attachment optics 102 here have, for example, rectangular cross sections which extend from the light entry surface 101 extend to the light exit surface 103 is substantially conical.
- the optical attachment 102 or the individual optical fibers 102 has or have an opening angle ⁇ in the direction of the light exit surface 103.
- the direct light beams 50 conducted through the optical attachment 102 are split into blue boundary light beams 51 or into red boundary light beams 52 when they emerge from the light-conducting attachment optics 102 in the area of the light color fringe.
- the comparatively short-wave blue radiation or the blue light component 51 is thereby refracted more strongly than the comparatively long-wave red radiation or the red light component 52.
- An exit angle ⁇ , ⁇ between the optical longitudinal axis 150 and the blue boundary light beam 51 is thus greater than an exit angle cpi, R between the optical axis 150 and the red boundary light beam 52.
- a normal distance y (B) of the blue boundary light beam 51 from the optical longitudinal axis 150 A difference distance ⁇ y between red and blue boundary light beams 51, 52, measured as a normal distance to the optical longitudinal axis 150 in the diaphragm plane 210, is greater than a normal distance y) of the red boundary light beam 52 from the longitudinal optical axis 150 the larger, the greater the distance z of the diaphragm plane 210 from the plane 110 through the lens focal point.
- the difference distance Ay depends on the material selection of the light-conducting attachment optics 102, as illustrated in the following FIGS. 5 to 7.
- FIG. 4 shows a schematic detail view of the light beam path of a doubly deflected light beam 55 in the auxiliary optics 102.
- the deflected light beam 55 occurs at an exit angle .phi..sub.o with respect to the direction of the optical longitudinal axis 150 at the Light exit surface 103 of the attachment optics 102 off.
- the blue boundary light beams 51 and the blue light portion 51 are again refracted more strongly than the red boundary light beams 51 and the red light portion 52, respectively.
- An exit angle ⁇ , ⁇ between the optical axis 150 and the blue boundary light beam 51 is again greater than an exit angle cpoi, R between the optical axis 150 and the red boundary light beam 52.
- the beam stop is positioned with its diaphragm edge in the diaphragm plane 210, the diaphragm edge is arranged at a normal distance from the optical longitudinal axis 150, which lies between the normal distance (B) of the blue boundary light beam 51 and the normal distance (R) of the red boundary light beam 52.
- the difference distance Ay between the red and blue boundary light beams 51, 52 is somewhat larger in the beam path of a double-deflected light beam 55 shown in FIG. 4 than in the case of the direct light beam beam path 50 illustrated in FIG.
- FIGS. 5 to 7 each show in diagrammatic representation for different materials of the light-conducting optical attachment 102 the profile of the difference distance Ay between blue 51 and red 52 boundary light beams as a function of the exit angle ⁇ between the optical longitudinal axis 150 and the respective boundary light beam 51, 52.
- FIG. 5 shows the courses of the difference distance ⁇ y for a light guide 102 made of polymethyl methacrylate (PMMA), wherein the data series for different distances z were determined in 10 mm, 50 mm and 80 mm distance from the lens focus plane or from the primary optics 100. It can be seen that at a greater distance z of 80 mm from the primary optics, the difference distance Ay is greater than at the same exit angle ⁇ at a smaller distance z. For example, in the case of a light guide of PMMA at a distance z of 80 mm at an exit angle ⁇ of 20 °, the difference distance Ay is approximately 0.4 mm.
- PMMA polymethyl methacrylate
- the difference distance Ay is about 0.3 mm.
- FIG. 7 illustrates the characteristics of the difference distance Ay for a light guide 102 made of polycarbonate (PC). Again, the data series for different distances z in 10 mm, 50 mm and 80 mm distance from the lens focal plane and the primary optics 100 are shown. For example, for a light guide made of polycarbonate at a distance z of 80 mm at an exit angle ⁇ of 20 °, the difference distance Ay is about 1.0 mm.
- FIG. 8 shows a so-called "PixelLite" light module 2 with a diaphragm position 210 of the beam diaphragm 200 at half the focal length SW.
- the diaphragm plane 210 is thus arranged in the direction of the longitudinal optical axis 150 exactly midway between the plane 110 through the lens focal point and the lensapexe plane 310 ,
- FIG. 9 shows in diagram form the profile of the selection criterion A (RB) as a function of the distance z of the radiation diaphragm 200 from the lens focus plane 110 for determining a suitable diaphragm position 210 in the beam path between the primary optics 100 and the secondary optics 300 Distance z of the beam stop 200 from the lens focus plane 110 by color sensor measurements a difference A (RB) of the relative difference between a red light component R shielded by the radiation stop 200 against the red light component R in the light beam 50 passing through without the radiation stop and the relative difference between one passing through the radiation stop 200 Shielded blue light component B compared to the non-beam aperture continuous blue light component B determined in the light beam 50.
- Embodiment is advantageously to select a diaphragm position with a distance z of 20 mm to 25 mm, on the one hand to achieve a selective shading of the blue light component B and on the other hand to ensure high efficiency of the overall system.
- the difference ⁇ (RB) is from 0.1 to 0.2, wherein the distance z and the difference ⁇ (RB) are directly proportional.
- red light components R are also shaded and as a result the overall efficiency or the measured difference A (RB) decreases in negative terms.
- FIG. 10 shows an alternative position of a color-correcting beam stop 200 as part of an attachment optical mount 105.
- the beam stop 200 is integrated here in the primary optics 100 and is fastened together with the latter to the primary optics mount.
- FIG. 11 illustrates obliquely from above the color-correcting beam stop 200 illustrated in FIG. 10 as part of the auxiliary optical mount 105.
- the stop plane 210 of the beam stop 200 is here arranged within a light exit cone 500 with a boundary edge 510.
- Fig. 12 shows a frontal view of the arrangement shown in Fig. 11, wherein the diaphragm edges 221, 222 are shown by dashed lines.
- the diaphragm edges 221, 222 here each have courses of free-form curves 240.
- the primary optics holder 105 is shown partially cut away.
- the diaphragm edges 221, 222 in the form of a free-form curve 240 are formed here by the primary optics holder 105.
- the radiation diaphragm 200 is thus integrated into the primary optics holder 105.
- Fig. 14 shows - comparable to Fig. 3 - in a detailed view from the side of the shading of boundary light beams 51, 52 of a directly guided in the optical attachment 102 light beam 50.
- Fig. 14 in contrast to Fig. 3 is also an aperture 202 a beam aperture 200 shown.
- a blue boundary light beam 51 of the light color fringe 251 is hereby shaded by the radiation aperture 200, while a red boundary light beam 52 passes through the aperture plane 210 without shading and thus advantageously contributes to the overall efficiency of the illumination device 1.
- first or lower diaphragm edge or diaphragm edge portion second or upper diaphragm edge or diaphragm edge portion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50284/2015A AT516836B1 (de) | 2015-04-10 | 2015-04-10 | Beleuchtungsvorrichtung mit Strahlenblende sowie Kraftfahrzeugscheinwerfer |
| PCT/AT2016/050088 WO2016161471A1 (de) | 2015-04-10 | 2016-04-04 | Beleuchtungsvorrichtung mit strahlenblende |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3280950A1 true EP3280950A1 (de) | 2018-02-14 |
| EP3280950B1 EP3280950B1 (de) | 2020-02-19 |
Family
ID=55919547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16720990.7A Active EP3280950B1 (de) | 2015-04-10 | 2016-04-04 | Beleuchtungsvorrichtung mit strahlenblende |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10378719B2 (de) |
| EP (1) | EP3280950B1 (de) |
| JP (1) | JP6402260B2 (de) |
| CN (1) | CN107407471B (de) |
| AT (1) | AT516836B1 (de) |
| WO (1) | WO2016161471A1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT518551B1 (de) * | 2016-08-04 | 2017-11-15 | Zkw Group Gmbh | Kraftfahrzeugbeleuchtungsvorrichtung |
| AT519356B1 (de) * | 2017-04-07 | 2018-06-15 | Zkw Group Gmbh | Lichtmodul für einen Kraftfahrzeugscheinwerfer |
| JP6571734B2 (ja) | 2017-09-04 | 2019-09-04 | トヨタ自動車株式会社 | 車両用照明装置 |
| EP3495718A1 (de) * | 2017-12-05 | 2019-06-12 | ZKW Group GmbH | Projektionseinrichtung für einen kraftfahrzeugscheinwerfer |
| EP3527875A1 (de) * | 2018-02-15 | 2019-08-21 | ZKW Group GmbH | Kraftfahrzeugscheinwerfer mit einem brennglasblech |
| US11105483B2 (en) * | 2018-03-15 | 2021-08-31 | Koito Manufacturing Co., Ltd. | Vehicle lamp |
| CN112443811A (zh) * | 2019-09-04 | 2021-03-05 | 华域视觉科技(上海)有限公司 | 一种车灯初级光学元件、车灯模组、车灯及车辆 |
| KR102292135B1 (ko) * | 2019-09-27 | 2021-08-23 | 현대모비스 주식회사 | 차량용 헤드램프 |
| KR102739073B1 (ko) * | 2019-12-27 | 2024-12-05 | 에스엘 주식회사 | 차량용 램프 |
| US11221122B2 (en) * | 2020-03-27 | 2022-01-11 | Nichia Corporation | Lighting device and headlight having a reflector, lenses and light-shielding members |
| CN112325241B (zh) * | 2020-10-27 | 2022-11-22 | 浙江吉利控股集团有限公司 | 一种车灯装置及应用其的车辆 |
| CN113418171B (zh) * | 2020-12-07 | 2026-03-17 | 华域视觉科技(上海)有限公司 | 一种车灯模组、车灯及车辆 |
| JP7576524B2 (ja) * | 2021-08-20 | 2024-10-31 | 株式会社小糸製作所 | 描画用灯具 |
| DE102021132692A1 (de) * | 2021-12-10 | 2023-06-15 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Lichtmodul eines Kraftfahrzeugscheinwerfers und Kraftfahrzeugscheinwerfer mit einem solchen Lichtmodul |
| CN114508737B (zh) * | 2022-02-28 | 2023-08-08 | 广东烨嘉光电科技股份有限公司 | 一种提高光线利用率的车灯透镜模组 |
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| DE3241713A1 (de) * | 1982-11-11 | 1984-05-17 | Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt | Abgeblendeter scheinwerfer fuer kraftfahrzeuge |
| FR2550847B1 (fr) * | 1983-08-18 | 1988-07-01 | Cibie Projecteurs | Projecteur a reflecteur elliptique et a faisceau coupe, pour vehicule automobile |
| FR2811408B1 (fr) | 2000-07-07 | 2002-10-18 | Valeo Vision | Projecteur du genre elliptique notamment pour eclairage de route a photometrie basse amelioree |
| US7036969B2 (en) * | 2003-12-04 | 2006-05-02 | Guide Corporation | Adverse weather headlamp system |
| KR101224265B1 (ko) * | 2004-04-08 | 2013-01-18 | 페더럴-모걸 코오포레이숀 | 색수차를 보정한 투사형 램프 전조등 |
| DE102007011561B4 (de) * | 2007-03-02 | 2016-03-17 | Seereal Technologies S.A. | Einrichtung zur Korrektur der Wellenlängenabhängigkeit in beugungsbasierten optischen Systemen |
| JP5212785B2 (ja) * | 2008-02-22 | 2013-06-19 | スタンレー電気株式会社 | 車両用前照灯 |
| DE102010029176A1 (de) * | 2009-10-05 | 2012-12-27 | Automotive Lighting Reutlingen Gmbh | Kraftfahrzeugscheinwerfer mit einem Halbleiterlichtquellen, eine Primäroptik und eine Sekundäroptik aufweisenden Lichtmodul |
| US8899782B2 (en) * | 2010-03-31 | 2014-12-02 | Koninkljke Philips N.V. | Lighting system and light source unit for such a system |
| DE102011077636A1 (de) * | 2011-04-27 | 2011-11-03 | Automotive Lighting Reutlingen Gmbh | Lichtmodul eines Kraftfahrzeugs zur Erzeugung einer Spotverteilung einer Fernlicht-Lichtverteilung und Kraftfahrzeugscheinwerfer mit einem solchen Modul |
| AT511760B1 (de) * | 2011-08-08 | 2013-12-15 | Zizala Lichtsysteme Gmbh | Led-lichtquellenmodul für einen led-kraftfahrzeugscheinwerfer sowie led-kraftfahrzeugscheinwerfer und scheinwerfersystem |
| DE102011085315A1 (de) * | 2011-10-27 | 2013-05-02 | Automotive Lighting Reutlingen Gmbh | Scheinwerferprojektionsmodul für ein Kraftfahrzeug |
| KR101344427B1 (ko) * | 2012-09-06 | 2013-12-23 | 주식회사 에스엘 서봉 | 차량용 램프 |
| DE102013200925A1 (de) * | 2013-01-22 | 2014-07-24 | Automotive Lighting Reutlingen Gmbh | Lichtquellenbaueinheit für KFZ-Scheinwerfer |
| DE102013206488A1 (de) * | 2013-04-11 | 2014-10-30 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für eine Kraftfahrzeugbeleuchtungseinrichtung |
| DE102013217843A1 (de) * | 2013-09-06 | 2015-03-12 | Automotive Lighting Reutlingen Gmbh | Projektionsoptik zum Einsatz in einem LED-Modul eines Kraftfahrzeugscheinwerfers, sowie LED-Modul und Kraftfahrzeugscheinwerfer mit einer solchen Projektionsoptik |
| KR101534703B1 (ko) * | 2013-09-25 | 2015-07-07 | 현대자동차 주식회사 | 자동차의 헤드 램프 |
| DE102013227194A1 (de) * | 2013-12-27 | 2015-07-02 | Automotive Lighting Reutlingen Gmbh | Kraftfahrzeugscheinwerfer |
-
2015
- 2015-04-10 AT ATA50284/2015A patent/AT516836B1/de active
-
2016
- 2016-04-04 WO PCT/AT2016/050088 patent/WO2016161471A1/de not_active Ceased
- 2016-04-04 EP EP16720990.7A patent/EP3280950B1/de active Active
- 2016-04-04 US US15/559,886 patent/US10378719B2/en active Active
- 2016-04-04 JP JP2017550538A patent/JP6402260B2/ja not_active Expired - Fee Related
- 2016-04-04 CN CN201680021101.4A patent/CN107407471B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AT516836B1 (de) | 2016-09-15 |
| JP6402260B2 (ja) | 2018-10-10 |
| EP3280950B1 (de) | 2020-02-19 |
| US10378719B2 (en) | 2019-08-13 |
| WO2016161471A1 (de) | 2016-10-13 |
| JP2018511152A (ja) | 2018-04-19 |
| CN107407471A (zh) | 2017-11-28 |
| CN107407471B (zh) | 2020-07-28 |
| AT516836A4 (de) | 2016-09-15 |
| US20180058652A1 (en) | 2018-03-01 |
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