EP3044501A1 - Module d'éclairage pour véhicule - Google Patents
Module d'éclairage pour véhiculeInfo
- Publication number
- EP3044501A1 EP3044501A1 EP14761993.6A EP14761993A EP3044501A1 EP 3044501 A1 EP3044501 A1 EP 3044501A1 EP 14761993 A EP14761993 A EP 14761993A EP 3044501 A1 EP3044501 A1 EP 3044501A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- radiation
- light
- source
- lighting module
- 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
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- 238000005286 illumination Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
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- 206010052143 Ocular discomfort Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
Definitions
- the present invention relates to a lighting module intended to be arranged in a headlight of a vehicle, in particular a motor vehicle and a method of producing a lighting beam produced by this lighting module.
- the invention also relates to a projector comprising such a lighting module.
- the invention also relates to a vehicle equipped with such a projector, preferably a pair of such projectors.
- projectors equip the front of motor vehicles and are able to form light beams that are capable of performing different lighting functions taking into account traffic conditions, such as low beam functions, city , road or even anti-fog.
- Adaptive projectors are known in the state of the art which are capable of forming advanced lighting beams, also called adaptive beams whose dimensions, intensity and / or direction are adjusted to fulfill such functions. These projectors make it possible in particular to perform directional lights functions, adaptive or glare-free high beam lights, comprising at least one beam masking zone in the areas where cross or tracked vehicles are located.
- Each projector generally consists of several lighting modules to obtain sufficient light power to form a lighting beam.
- Each of these lighting modules then forms part of the lighting beam of the headlamp by being turned on or off separately from each other.
- lighting module is meant an assembly comprising at least one light source and an optical projection or reflection system.
- the light source is a laser source.
- the module then comprises a wavelength conversion device.
- This laser light source of the lighting module is capable of emitting radiation towards a scanning system such as a micro-mirror mounted movably about two orthogonal axes.
- This radiation is then deflected by this scanning system to at least one wavelength conversion device which comprises a substrate of reflective or transparent material on which is deposited a thin layer of phosphorescent material.
- phosphorescent material a material having a phosphorescent effect, generally comprising different chemical elements, but not necessarily containing phosphorus.
- the conversion device thereby being scanned by the scanning system, re-emits white light radiation to a projection optical system and thereby forms a portion of the projector's illumination beam.
- the modules of such a projector are controlled by a control unit which controls the activation of the laser light sources and the scanning systems for carrying out the different lighting functions of the projector.
- such a projector generally produces a lighting beam which may have color differences because each part of this beam is produced by each of these lighting modules and in particular because of the variability of the layers of phosphorescent material. from one module to another.
- each lighting module equipping this projector is inefficient compared to the nominal power of laser sources: indeed, the laser power utilization rate is low because during use the laser is frequently under-watted to form a standard regulatory beam and avoid generating light spots in the beam that do not meet the regulatory maxima. This is necessary further to avoid visual discomfort for the driver, linked to too much illumination near the vehicle.
- the subject of the invention is a lighting module for a motor vehicle headlamp comprising first and second sources of light radiation capable of emitting laser radiation to a wavelength conversion device which is capable of retransmitting light radiation to a projection optical system for producing a lighting beam, characterized in that the module comprises a single wavelength conversion device which is common to the laser radiation and the first source of light radiation is static or quasi-static, comprising at least a first source of laser light cooperating with a single reflector.
- the second source of light radiation comprises at least one second laser light source which cooperates with at least one scanning system;
- the reflector is static or quasi-static, mounted in rotation about a horizontal axis;
- the first source of light radiation is arranged above an optical axis of the projection optical system
- the at least one first laser light source is positioned above or behind the wavelength conversion device;
- the reflector is positioned in front of the at least one first laser light source, above an optical axis of the projection optical system between the wavelength converting device and the projection optical system;
- the reflector is a mirror made of metal, in particular an alloy based on aluminum;
- the at least one first laser light source is capable of emitting laser radiation towards the reflector which is able to direct it towards an upper part of the surface of the wavelength conversion device;
- the second source of light radiation, the reflector and the projection optical system are arranged on the same side of the wavelength conversion device;
- the at least first and second laser light sources are laser diodes, in particular laser diodes having the same characteristics.
- the invention also relates to a headlamp for a motor vehicle comprising a lighting module according to the invention, in particular a single lighting module according to the invention.
- the object of the invention is a method for producing a lighting beam comprising the following steps:
- first light beam providing a first portion of said illumination beam by means of a first source of light radiation having at least a first laser light source emitting laser radiation directed by a reflector to a length conversion device waveform, the wavelength converting device re-emitting light radiation to a projection optical system,
- a second light beam providing a second portion of said illumination beam by means of a second source of light radiation having at least a second laser light source emitting laser radiation directed by a scanning system to said conversion device wavelength converting device that re-emits light radiation to the projection optical system, and
- the lighting module and therefore the projector that understands it are of a design cost and a small footprint.
- this lighting module makes it possible to carry out all the lighting functions taking account of the traffic conditions and regulations in the field, by including only a single device for converting wavelength and that a only optical projection system.
- the generated beam is homogeneous in color and a precise superposition of the different beam portions is achieved without requiring mechanical adjustment between modules of the same projector, since it has only one module.
- FIG. 1 is a schematic view of the lighting module according to this embodiment of the invention.
- FIG. 2 is a schematic view of a lighting beam produced by the lighting module according to this embodiment of the invention.
- FIG. 3 is a schematic representation of a first light beam with a substantially horizontal cut-off of the illumination beam produced by the lighting module according to this embodiment of the invention
- FIG. 4 is a diagrammatic view of a part of the lighting module which is capable of producing the first light beam of the illumination beam according to this embodiment of the invention
- FIG. 5 is a representation of the definition of a vertical section of the reflector according to this embodiment of the invention.
- FIG. 6 is a representation of the definition of a horizontal section of the reflector according to this embodiment of the invention.
- the lighting module comprises first 1 and second 2 sources of light radiation. These first 1 and second 2 sources of light radiation are able to emit laser radiation L1, L2 to a conversion device 3 of wavelength, advantageously common, which is then able to transmit this beam to a projection optical system 4 .
- this first source of light radiation 1 comprises: a first laser light source 9 and a reflector 10.
- a first laser light source 9 does not comprise optical elements of focusing or other elements between the laser source and the reflector; the first laser light source 9 cooperates directly with the reflector 10.
- optical elements may be provided to combine the laser beams from the different laser sources. These combination optical elements may for example be based on a mixture of the polarizations of the laser beams and / or a mixture of different wavelengths and / or a juxtaposition of the images of the laser sources.
- the second source of light radiation 2 comprises a second laser light source 6, a scanning system 7 and focusing optical elements 8. These focusing optical elements 8 are located between the second laser light source 6 and the scanning system 7. Thanks to the scanning system, the image resulting from the conversion device is made dynamic and makes it possible to produce adaptive lighting beams.
- the scanning system 7, the reflector 10 and the projection optical system 4 are located on the same side of the conversion device 3, that is to say that the conversion device 3 is used in reflection.
- the first 9 and second 6 laser light sources are quasi-point light sources which consist of a laser diode emitting a visible beam whose wavelength is between 400 nanometers and 500 nanometers, and preferably around 450 or 460 nanometers. These wavelengths correspond to colors ranging from blue to near ultraviolet, this last color being rather located towards the wavelengths lower than 400 nanometers.
- This laser diode may be provided with a single cavity and have a power of between about 1 and 3.5 watts, preferably 1, 6 watts or 3 watts.
- This laser diode comprises an output facet whose dimensions can be of the order of 14 microns per 1 micron. It is capable of emitting a beam of elliptical section whose vertical and horizontal light intensity distribution profiles are Gaussian.
- the first source of light radiation 1 is arranged substantially above the optical axis AO (in dotted lines) of the projection optical system 4, with:
- the first laser light source 9 which can be positioned above and / or indented with respect to the wavelength conversion device 3, and
- the reflector 10 which is positioned in front of the first laser light source 9, above the optical axis of the projection optical system 4 between the conversion device 3 and the projection optical system 4.
- the first source of light radiation 1 is used to form the lower part projected on the road of the light beam generated by the module. This part of the beam is common to the different types of regulatory beams projected by the module and in particular the beam of low beam and high beam.
- the first source of light radiation 1 is said to be static because it makes it possible to statically form an image on the wavelength conversion device 3.
- this first source of light radiation 1 may be quasi-static since it may be displaced in particular at a low angular amplitude and especially at low speed, in particular to ensure a range correction which corresponds to small slow and global vertical movements to compensate the vehicle load or its dynamic reaction to braking and acceleration.
- the first source of light radiation 1 is static, with a fixed mounted reflector 10, a range correction can be made in a conventional manner with mechanical means located outside the module and acting on the inclination of the light. whole module.
- the reflector 10 is a static mirror, mounted fixed, or quasi-static, rotatably mounted about a horizontal axis to perform the required vertical range correction movements.
- quasi-static means in the present application that it is animated by a low amplitude and low speed movement, less than 15 °. s -1 , preferably less than 10 °. s -1 , advantageously less than 4 °. s -1 .
- the oscillation speed around the horizontal axis of the reflector 10 is at least ten times lower, preferably twenty times lower, preferably at least fifty times lower.
- the reflector 10 may be made of metal, for example an aluminum-based alloy or be made of aluminized glass on at least one face.
- This reflector 10 can be fixedly mounted relative to the first laser light source 9.
- the reflector is quasi-static, that is to say that it can also be mounted so as to be mobile about a axis and driven for example by a servomotor or piezoelectric shims to perform range correction movements, as mentioned above.
- This reflector 10 reflects laser radiation L1 from this first laser light source 9 to the wavelength conversion device 3.
- the scanning system 7 of the second source of light radiation 2 relates, according to one preferred variant, to a micro-mirror that can be square in shape and each side of which can measure about 0.8 mm.
- This micro-mirror is made mobile about two orthogonal axes from for example a MEMS device (acronym "Micro Electro Mechanical Systems” meaning “Micro Electromechanical Systems”).
- the scanning system can be constituted by the association of two micro-mirrors, each being movable about a single axis, the two axes being orthogonal.
- This scanning system 7 reflects L2 laser radiation from the second laser light source 6 to the wavelength conversion device 3. This radiation L2 can then be deflected in two directions by the scanning system 7.
- the second laser light source 6 and the scanning system 7 can be included in a MOEMS (acronym for "Micro-Opto-Electro-Mechanical Systems", meaning “microoptoelectromechanical system”).
- An MOEMS is an optical system comprising, in the present case, at least one laser light source and a scanning system 7.
- the MOEMS are compact, reliable, simple to use devices that allow high precision and accuracy. great flexibility of redirection of the L2 laser radiation towards the conversion device 3.
- the second source of light radiation 2 comprises a single light source, it may however in an alternative for example include two laser light sources each emitting radiation to the same scanning system 7. alternatively, these two sources can each emit L2 radiation to separate scanning systems.
- the lighting module may comprise three scanning systems 7 each equipped with one or more laser light sources. The creation of the lighting beam in its high part projected on the road is thus optimized.
- the first source of light radiation 1 comprises a single laser source 9.
- it may comprise more than one source, for example two laser sources each emitting radiation laser to the mirror 10, the rays of these two sources can optionally be combined before reaching the mirror.
- the wavelength conversion device 3 included in the lighting module comprises a substrate forming a reflective support 12 which is covered by a continuous layer 11 of a phosphorescent material.
- This support 12 of the conversion device 3 is chosen from materials that are thermally good conductors. Such materials thus enable the support 12 to limit the degradation of the layer 1 1 of phosphorescent material by restricting the temperature rise of the conversion device 3 and the layer 1 January.
- the layer 1 1 in phosphorescent material is capable of reemitting a radiation 16 of white light. Indeed, when the first 1 and second 2 sources of light radiation respectively emit monochromatic and coherent laser radiation L1, L2 towards the conversion device 3, the latter receives this laser radiation L1, L2 and reemet a radiation 16 of white light which has a plurality of lengths of wave belonging to the spectrum of visible light and between about 400 nanometers and 800 nanometers.
- This emission of white light occurs, according to a lambertian emission diagram, that is to say with a uniform luminance in all directions.
- the substrate of this conversion device 3 is made for example of metal material, in particular aluminum.
- This metal material constituting the substrate has good characteristics and properties in terms of conduction and thermal resistance.
- the substrate advantageously makes it possible to limit the temperature of the layer 1 1 in phosphorescent material, by promoting the dissipation of heat.
- this substrate can be exposed to laser powers without decomposing, which can be, for example, of the order of 15 watts.
- the conversion device 3 is thus arranged in the lighting module so as to be able to receive laser radiation L1, L2 coming from the first light radiation source 1 and from the second light radiation source 2. therefore a conversion device 3 common to all laser light sources.
- This conversion device 3 is situated in the vicinity of the focal plane of the projection optical system 4 which then forms at infinity an image of the layer 1 1 of phosphorescent material, or more exactly points of this layer 11 that emit light. light in response to the laser excitation resulting from the L1, L2 laser radiation they receive from the first 1 and second 2 sources of light radiation. More specifically, the projection optical system 4 forms a lighting beam 15 with the light radiation 16 emitted by the different points of the layer 1 1 of phosphorescent material illuminated by these laser radiation L1, L2.
- the lighting beam 15 emerging from the lighting module is thus directly a function of the light rays emitted by the layer 1 1 of phosphorescent material, itself a function of the laser radiation L1, L2 absorbed by this layer January 1.
- the laser radiation L2 coming from the second source of light radiation 2 forms an image to be projected by the optical projection system 4, by scanning by taking advantage of the retinal persistence and / or the metastability of the phosphorescent material.
- first 1 and second 2 sources of light radiation, the conversion device 3 and the projection optical system 4 are included in this single lighting module that equips a projector.
- This lighting module also comprises a control unit 5 which is able to drive the first 1 and second 2 sources of light radiation as a function of the desired photometry of the illumination beam 15 produced by this lighting module.
- control unit 5 controls the scanning system 7 so that the laser radiation L2 successively scans all the zone points of the layer 1 1 of the phosphorescent material selected by this control unit 5.
- the control unit 5 is able to define the areas of the 1 1 layer that should be scanned with laser radiation L2 so as to form an image on the layer January 1, such an image consisting of a succession of lines each formed of a succession of more or less bright points.
- the control unit 5 also controls the activation and control of the power of the first 1 and second 2 laser light sources and, where appropriate, the modulation of the intensity of the laser radiation L1, L2. It will be noted that the points of the layer 1 1 of the phosphorescent material thus illuminated by the laser radiation L1, L2 emit light, with an intensity which is directly a function of the intensity of these laser radiation L1, L2 which illuminate these points, the emission taking place according to a Lambertian emission diagram.
- this lighting module is able to emit a lighting beam 15.
- This lighting beam 15 corresponds to the superposition of light beams resulting from the first 1 and second 2 sources of light radiation cooperating with the wavelength conversion device 3 and the projection optical system 4. This superposition may be partial or complete or only a fraction of the respective contours of these beams.
- This lighting beam 15 may result from the superposition of at least two different light beams, here the first 14 and second 13 light beams, but also the superposition of more than two beams.
- the second source of light radiation 2 can emit beams produced by several laser light sources cooperating with one or more scanning systems.
- Figure 2 there is illustrated an example of a lighting beam 15 produced by the lighting module, said passing beam or code as appearing on a flat projection surface.
- the plane projection surface is arranged facing the lighting module, perpendicularly to the optical axis of the latter.
- This light beam 15 of the dipped beam type results from the superposition of the first light beam 14 and the second light beam 13.
- the first light beam 14 is produced by the first source of light radiation 1.
- This first beam 14 shown in FIG. 3, produces a horizontal cut-off line 18.
- This horizontal cut-off line 18 is a limit lighting line above which it is forbidden to light the road. In countries with right-hand traffic, this cut-off line is horizontal across the width of the road and on the left-hand side of the road.
- Figure 4 is shown a portion of the lighting module illustrated in Figure 1.
- the first laser light source 9 is able to emit laser radiation L1 which is guided by the reflector 10 towards the upper part 23 of the conversion device 3, in the zone situated above the horizontal plane of the optical axis AO (shown in dashed lines), in order to concentrate the radiation exclusively under the horizontal cut-off line 18.
- the conversion device 3 then re-emits a radiation 16 of white light to the projection optical system 4 which forms thus the first light beam 14.
- the reflector 10 is calculated to produce this horizontal cutoff line 18 and a controlled energy distribution to produce this first light beam 14.
- This first light beam 14 represents a portion of the lighting beam 15 which is common to all light beams regulatory, including crossing or road, likely to be produced by the lighting module.
- This first light beam 14 generally corresponds to the lower part of the regulatory light beams.
- These regulatory lighting beams correspond to the approved lighting configurations that fulfill the various lighting functions taking account of traffic conditions, such as, for example, dipped beam, city, highway, gantry or fog, etc.
- this first light beam 14 fulfills a lighting function at the front of the vehicle on the ground up to about 0.5 to 1.5 degrees below the horizon.
- the second light beam 13 produces a non-flat cut, having a horizontal segment 19 which extends into an inclined portion 17 forming an angle of about 10 to 60 degrees upwards relative to the horizontal.
- the superposition of the second light beam 13 with the first light beam 14 has a covering area 20 which has a high light intensity.
- This overlapping area 20 otherwise known as "light spot”, or “hot spot” is, generally, located in the center of a less intense halo of light.
- This zone 20 is here positioned substantially at the center of the illumination beam 15 in the axis of said beam 15.
- the headlamp is of the directional type, that is to say where the upper part of the beam (other than above the cutoff line) is shifted in the direction of the orientation of the front wheels of the vehicle, this zone 20 will undergo a displacement relative to the axis of the beam, according to the left or right orientation of the wheels.
- the beam of illumination 15 of the type of dipped beam obtained has a non-flat cut line, essentially constituted a low horizontal portion 21, followed by a recess 17, consisting of an oblique segment at the projection of the optical axis, and a portion 22 substantially horizontal high.
- a non-flat cut line essentially constituted a low horizontal portion 21, followed by a recess 17, consisting of an oblique segment at the projection of the optical axis, and a portion 22 substantially horizontal high.
- Such a lighting beam 15 of the code type has the role of preventing the lighting of the vehicle from dazzling a driver in a vehicle in the opposite direction or the vehicle preceding it.
- This beam example corresponding to a crossover beam is applicable to right-hand traffic. This example is of course directly transposable to traffic conditions on the left.
- the illumination beam 15 produced by the illumination module is homogeneous because in this embodiment, the first laser light source 9 has the same characteristics as the second laser light source 6 and the latter both emit L1 radiation. , L2 to the same conversion device 3.
- the lighting module is of course able to produce in the same way other lighting functions taking into account the traffic conditions and regulations in the field, including road beams adaptive or with anti-glare function.
- the reflector 10 has a particular surface 24 which can be determined from the definition of the transformation by reflection on this surface 24 of a Gaussian elliptical beam from the first laser light source 9 whose intersection with the conversion device 3 forms an area defined by a horizontal cut.
- this zone illuminated by the first laser light source 9 then goes from the conversion device 3 to become a quasi-Lambertian white light source which is imaged at infinity by the projection optical system 4.
- FIGS. 5 and 6 determine sections of the reflector 10 by a vertical plane and a horizontal plane passing through a source point corresponding to the first laser light source 9.
- These vertical and horizontal sections of the reflector 10 are determined by imposing the direction of a ray emitted by the first laser light source 9 and reflected along these sections of the reflector 10 at a current point so that the point d the impact of the vector reflected ray on the conversion device 3 describes a line
- the orthonormal base of the plane is here defined by the coordinate system in O, x, y and z, whose center O is placed on the output of the first laser light source 9 and more precisely on the center of the exit facet of the diode.
- the position of the current point is defined by
- the position of the point of impact C is then imposed on the conversion device 3 defined by depending on the angle projected vertically or the horizontal projected angle ⁇ of the incident ray on the mirror 10, and then, with:
- the differential equation in ⁇ ( ⁇ ) is: With regard to the vertical section, the differential equation in ⁇ ( ⁇ ) is:
- ⁇ , ( ⁇ ) in order for the resulting surface to correspond to a materially realizable reflector: ⁇ , ( ⁇ ) must be monotonous and increasing.
- the reflected ray is then determined from the current point from
- This minimization is then performed by this algorithm for all the impact points that can be defined on the surface 24 of this reflector 10 by the first laser light source in order to produce the first light beam 14.
- the method of determining the surface of the mirror 10 that has just been exposed in the case of a single laser source is transposable to a configuration in which the laser sources of the first light source 1 are combined.
- the laser beams have a transverse section of Gaussian elliptical type and therefore have a large and a small axis.
- the laser sources are then placed so that the plane of the major axes is that of the small axes are confused.
- each laser beam is reflected on a dedicated portion of the mirror, calculated as previously detailed (each source is considered individually).
- the mirror 10 will be cylindrical type, its cross section being calculated as detailed above for one of the laser sources and the laser sources of the first light source 1 are aligned along a line parallel to the axis of the mirror cylinder.
- the second source of light radiation may be constructed in the same way as the first source of light radiation, with a fixed or quasi-static reflector instead of a scanning system.
- the scanning variations of the conversion system to obtain an advanced lighting function can then be generated by resorting to a cache device, for example rotary, which will create cut lines.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1358709A FR3010486B1 (fr) | 2013-09-10 | 2013-09-10 | Module d'eclairage pour vehicule |
FR1362276A FR3010487A1 (fr) | 2013-09-10 | 2013-12-09 | Module d'eclairage pour vehicule |
PCT/EP2014/069270 WO2015036425A1 (fr) | 2013-09-10 | 2014-09-10 | Module d'éclairage pour véhicule |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3044501A1 true EP3044501A1 (fr) | 2016-07-20 |
EP3044501B1 EP3044501B1 (fr) | 2020-02-19 |
Family
ID=49578469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14761993.6A Active EP3044501B1 (fr) | 2013-09-10 | 2014-09-10 | Module d'éclairage pour véhicule |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3044501B1 (fr) |
FR (2) | FR3010486B1 (fr) |
WO (1) | WO2015036425A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108266696A (zh) * | 2017-01-02 | 2018-07-10 | 法雷奥照明公司 | 组合两个光源的、用于车辆的照明装置 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3030017B1 (fr) * | 2014-12-10 | 2019-10-04 | Valeo Vision | Module lumineux et projecteur muni d'un tel module. |
JP6455710B2 (ja) | 2015-01-22 | 2019-01-23 | スタンレー電気株式会社 | 車両用灯具 |
WO2016157765A1 (fr) * | 2015-03-31 | 2016-10-06 | パナソニックIpマネジメント株式会社 | Dispositif d'éclairage |
FR3036772A1 (fr) * | 2015-05-29 | 2016-12-02 | Valeo Vision | Projecteur pour vehicule automobile |
JP6581002B2 (ja) | 2016-01-25 | 2019-09-25 | スタンレー電気株式会社 | 前照灯装置 |
DE102016210918A1 (de) * | 2016-06-20 | 2017-12-21 | Osram Gmbh | Lichtquelle mit Laser Activated Remote Phosphor-Technologie für ein Fahrzeug und Beleuchtungseinrichtung mit der Lichtquelle |
FR3054642B1 (fr) * | 2016-07-29 | 2020-07-17 | Valeo Vision | Module d'eclairage de projecteur de vehicule automobile a faisceau d'ouverture variable |
JP6981174B2 (ja) * | 2017-10-25 | 2021-12-15 | トヨタ自動車株式会社 | 車両用前照灯装置 |
DE102018129216A1 (de) * | 2018-11-20 | 2020-05-20 | Automotive Lighting Reutlingen Gmbh | Verfahren zum Betreiben eines Kraftfahrzeugscheinwerfers |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4047266B2 (ja) * | 2003-11-19 | 2008-02-13 | 株式会社小糸製作所 | 灯具 |
JP5118564B2 (ja) * | 2008-06-24 | 2013-01-16 | 株式会社小糸製作所 | 車両用灯具 |
JP5577138B2 (ja) * | 2010-04-08 | 2014-08-20 | スタンレー電気株式会社 | 車両用前照灯 |
JP5527058B2 (ja) * | 2010-07-06 | 2014-06-18 | セイコーエプソン株式会社 | 光源装置及びプロジェクター |
JP5259791B2 (ja) * | 2010-10-29 | 2013-08-07 | シャープ株式会社 | 発光装置、車両用前照灯、照明装置、及び車両 |
JP5656290B2 (ja) * | 2011-03-18 | 2015-01-21 | スタンレー電気株式会社 | 半導体発光装置 |
DE102012100141A1 (de) * | 2012-01-10 | 2013-07-11 | Hella Kgaa Hueck & Co. | Lichtmodul für einen Scheinwerfer eines Fahrzeugs |
JP2014002839A (ja) * | 2012-06-15 | 2014-01-09 | Ushio Inc | 蛍光体光源装置 |
FR2993831B1 (fr) * | 2012-07-27 | 2015-07-03 | Valeo Vision | Systeme d'eclairage adaptatif pour vehicule automobile |
-
2013
- 2013-09-10 FR FR1358709A patent/FR3010486B1/fr not_active Expired - Fee Related
- 2013-12-09 FR FR1362276A patent/FR3010487A1/fr not_active Withdrawn
-
2014
- 2014-09-10 WO PCT/EP2014/069270 patent/WO2015036425A1/fr active Application Filing
- 2014-09-10 EP EP14761993.6A patent/EP3044501B1/fr active Active
Non-Patent Citations (1)
Title |
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See references of WO2015036425A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108266696A (zh) * | 2017-01-02 | 2018-07-10 | 法雷奥照明公司 | 组合两个光源的、用于车辆的照明装置 |
CN108266696B (zh) * | 2017-01-02 | 2022-02-25 | 法雷奥照明公司 | 组合两个光源的、用于车辆的照明装置 |
Also Published As
Publication number | Publication date |
---|---|
FR3010486A1 (fr) | 2015-03-13 |
EP3044501B1 (fr) | 2020-02-19 |
FR3010487A1 (fr) | 2015-03-13 |
WO2015036425A1 (fr) | 2015-03-19 |
FR3010486B1 (fr) | 2018-01-05 |
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