EP3140591A1 - Erzeugen eines lichtabstrahlmusters in einem fernfeld - Google Patents
Erzeugen eines lichtabstrahlmusters in einem fernfeldInfo
- Publication number
- EP3140591A1 EP3140591A1 EP15721634.2A EP15721634A EP3140591A1 EP 3140591 A1 EP3140591 A1 EP 3140591A1 EP 15721634 A EP15721634 A EP 15721634A EP 3140591 A1 EP3140591 A1 EP 3140591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phosphor
- light
- lighting device
- light emission
- fluorescent
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 172
- 238000005286 illumination Methods 0.000 claims abstract description 48
- 238000009826 distribution Methods 0.000 claims description 11
- 238000009828 non-uniform distribution Methods 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000000969 carrier Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000005855 radiation Effects 0.000 description 11
- 238000011161 development Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000422 nocturnal effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 230000009131 signaling function Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000003867 tiredness Effects 0.000 description 1
- 208000016255 tiredness Diseases 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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
- F21S41/10—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
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/686—Blades, i.e. screens moving in a vertical plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
-
- 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
- F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving 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
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/695—Screens rotating around a vertical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
- F21V9/45—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity by adjustment of photoluminescent elements
Definitions
- a headlamp for generating a Lichtabstrahlmusters in a far field comprising at least one phosphor surface and at least one spaced from the phosphor surface
- Light source for emitting primary light for illuminating the phosphor surface, whereby an associated
- the invention is a light emission pattern generated.
- WO 2011/160680 A1 discloses a light source arrangement which has a primary light source and a secondary light source, wherein the primary light source is adapted to illuminate the secondary light source, wherein the
- Secondary light source has a polyhedron with at least a first and a second phosphor surface, wherein the
- Primary light source at least one laser or a
- a drive mechanism is attached to the primary light source or to the secondary light source.
- US 2006/0227087 A1 discloses laser display systems which generate at least one scanning laser beam to produce one or more phosphors on a screen emitting light to form images.
- Phosphor materials may include phosphor materials.
- EP 2 359 605 B1 discloses a luminous means with at least one semiconductor laser, which is adapted to a
- Conversion means which is arranged downstream of the semiconductor laser and adapted to at least a part of
- Concentration of color centers or luminous dots which is at least 10 ⁇ 7 / ⁇ ⁇ 3 and the color centers or dots are statistically distributed in the conversion means, and wherein a irradiated by the primary radiation focal spot of the conversion agent has an area of at most 0.5
- a lighting device for a headlight for generating a Lichtabstrahlmusters comprising at least one light source for emitting primary light to an illumination surface; at least two different phosphor surfaces, which are at least partially alternately by means of at least one translational movement in the illumination surface can be introduced; and a
- Control means for positioning the phosphor surfaces with respect to the illumination surface being in one
- Control device is adapted to set a particular Lichtabstrahlmusters at least one of them
- This lighting device has the advantage that it can be switched with a comparatively small design effort between different Lichtabstrahlmustern. That the fluorescent surfaces in the lighting area
- the far field in particular, likes one field or space in one
- the illumination surface may be particularly large in size and extent and shape factor due to the primary light
- a phosphor surface has at least one phosphor or conversion (dye) substance, which on the
- incident primary light at least partially in secondary light of different wavelengths, in particular larger
- Wavelength converts or converts.
- Wavelength conversion is basically known and need not be further elaborated here.
- a phosphor may partially convert incident blue primary light into yellow secondary light, so that of the
- Fluorescent surface total blue-yellow or white
- they comprise a different shape, a different type of phosphor (s) and / or a different phosphor distribution.
- different phosphor distribution may be a
- Phosphors e.g., phosphor A in one phosphor surface and phosphors A and B in another phosphor surface.
- Different fluorescent surfaces cause correspondingly when irradiated with primary light
- Color distribution at least one associated phosphor surface may be inhomogeneously coated with at least one phosphor, e.g. with an inhomogeneous layer thickness and / or an inhomogeneous phosphor concentration of at least one phosphor, in particular over a large area.
- Fluorescent surfaces can be determined in turn
- the light color is susceptible to the presence of fog or rain, but e.g. also adapt to a combination of fog or rain with an old or a young driver.
- the peculiarities of color blind or partial color blind e.g., with a red / green weakness
- At least one phosphor surface may have a uniform distribution of phosphor. This enables a uniformly illuminating light emission pattern.
- At least one may
- Fluorescent surface have a non-uniform distribution of at least one phosphor. This allows in a particularly simple manner, for example, in terms of brightness and / or a light color multiform light emission pattern.
- at least one phosphor surface may comprise a plurality of phosphors which are distributed unevenly over the phosphor surface.
- multi-colored light emission patterns can be provided in a particularly simple manner. If a partial region of the dye surface has partial regions in which a plurality of phosphors are present, it is easy to produce a light emission pattern with subregions that merge into one another.
- a fluorescent surface may also be separate from each other
- Parts have different phosphor concentrations and / or phosphors or phosphor mixtures. In addition or alternatively like the sections with
- the phosphor surfaces are arranged in particular on at least one at least translationally displaceable carrier. This gives the advantage that a position of
- Fluorescent surfaces in a mechanically simple manner, namely by means of a displacement of the at least one
- Carrier is changeable.
- a certain translational position of the carrier may be associated with it
- the phosphor surfaces may, for example, be arranged in layers or as a layer or layer system on the carrier.
- the wearer likes a plate or disc-like
- the carrier preferably consists of a highly conductive material, for example of metal or sapphire, for effective heat removal from the phosphor.
- the wearer may be cooled. It is a development that of any fluorescent surface, white or whitish light, in particular by only
- Partial conversion generated mixed light can be emitted.
- fluorescent surfaces
- the mixed light is generated only after the phosphor surface by overlay, e.g. by different colored radiation generated by the phosphor surface behind or behind the phosphor surface
- Pixels grouped wherein the phosphors generate secondary light with respective color components of the mixed light.
- strips or pixels with primary color-producing phosphors e.g. the primary colors red, green and / or blue (RGB color space) or cyan, magenta and / or yellow (CMY color space).
- primary color-producing phosphors e.g. the primary colors red, green and / or blue (RGB color space) or cyan, magenta and / or yellow (CMY color space).
- the light reflected or backscattered by the phosphor surface is used as useful light for generating the light emission pattern in the far field ("reflective arrangement") This may mean, in particular, that this light is selectively reflected by the phosphor surface (eg by being mounted on a fluorescent surface) As an alternative or in addition, this may be due to the side of the phosphor surface which faces away from the incident primary light
- the at least one light source is basically not limited in its kind.
- a light source with a narrow spectral band is preferred, such as
- Semiconductor light sources e.g. a light emitting diode (LED) or in particular a laser diode. It is a development that at least one light source is a semiconductor light source. In one variant, the at least one
- Semiconductor light source at least one light emitting diode.
- the at least one light-emitting diode may itself contain at least one wavelength-converting phosphor (conversion LED).
- the at least one light-emitting diode can be in the form of at least one light-emitting diode or in the form of at least one LED chip.
- Several LED chips can be mounted on a common substrate ("submount").
- LEDs e.g. based on InGaN or AlInGaP
- organic LEDs OLEDs, for example polymer OLEDs
- the at least one semiconductor light source may be e.g. have at least one diode laser or be such.
- the at least one semiconductor light source may be equipped with at least one own and / or common optics for beam guidance, e.g. at least one Fresnel lens, collimator, and so on.
- the primary light generated by at least one light source may be split into two or more different light beams, e.g. by means of a beam splitter.
- the light of several light sources may alternatively or additionally in one
- the control device may be coupled to at least one motor for moving the phosphor surfaces or may have at least one such motor.
- the at least one engine may in particular at least one carrier for the
- the control device may be electronics.
- the control device may be part of a lighting device that can be installed as a module in the vehicle or may be provided in the vehicle and after installation of a
- Lighting device are connected to it, in particular with a motor of the lighting device.
- Fluorescent surfaces are spaced apart, e.g. through a gap or edge or corner
- At least two phosphor surfaces are arranged directly adjacent to one another, e.g. arranged virtually gap-free adjacent or formed as subregions of a consistently formed larger (multiple or group) fluorescent surface.
- the shape of a phosphor surface is not limited and may be at least partially planar or curved.
- Fluorescent surface may be freely shaped and e.g. have multiple facets. Also, fluorescent surfaces may protrude from the ground plane, for example by tilting or tilting.
- the phosphor surface may be preceded by a stationary or co-displaceable optics, for example for beam shaping and / or spectral filtering of a light beam incident on the phosphor surface and / or beam shaping and / or spectral filtering of a light emitted by the phosphor surface (including a mixed light).
- the optics may be one or more optical
- At least one lens for example, at least one lens, at least one concentrator, at least one collimator, at least one reflector, at least one aperture, at least one filter, etc.
- an optic for directing the light emitted by the at least one phosphor surface is connected downstream of the far field. This downstream (“secondary”) optics is in particular not with the
- Fluorescent surfaces rotatable together and serves
- the optics may have one or more optical elements, e.g. at least one lens, concentrator, collimator, reflector, aperture, filters, etc. In the case of illumination of multiple phosphor surfaces, these same and / or different regions of the
- the lighting device has at least one shell-like reflector, which is connected downstream of at least one currently illuminated phosphor surface.
- the at least one currently illuminable phosphor surface is preferably located in the region of a focal spot of the reflector illuminated by it.
- at least two light emission patterns may have a different white light color. It is one
- a light-emitting pattern may only be changed in color, e.g. to adapt to changed lighting conditions.
- Fluorescent surface by means of a pure translational movement (ie without a rotational component) is movable into the illumination surface.
- the at least one phosphor surface thus retains its orientation in space. That's how one can be
- a trajectory or trajectory of the at least one phosphor surface is basically arbitrary and therefore may also be curved.
- the trajectory may be in a three-dimensional space or in a plane.
- the translation movement may be a linear or rectilinear translational movement.
- the translation movement may be superimposed by a rotational movement of the at least one phosphor surface
- Trajectory or trajectory shifted at least one fluorescent surface can be used.
- Fluorescent surface is movable by means of a translational movement and in addition a rotational movement in the illumination surface. This also includes a pivoting movement of the at least one phosphor surface.
- the rotational movement may be a pivot point or a rotation axis within the at least one phosphor surface, within a carrier of the
- Fluorescent surface or spaced therefrom Fluorescent surface or spaced therefrom.
- lighting devices are excluded in which a movement of the at least one phosphor surface, in particular of all phosphor surfaces, purely by a
- a Lichtabstrahlmuster means of at least one stationary aligned
- a light path of at least one primary light beam does not change with time, but remains stationary or fixedly aligned
- Light emission pattern is in particular to each
- This embodiment is particularly easy to implement. It is a preferred for this embodiment
- the at least one primary light beam has a significant cross-sectional size. This results in the advantage that the primary light beam can simultaneously illuminate a large area of the at least one phosphor surface which can currently be illuminated in the determined position. It is also an embodiment that one
- a particular translational, in particular linear, position of the carrier may correspond to an associated light emission pattern.
- This embodiment comprises that all the phosphor surfaces are arranged on exactly one common carrier.
- Embodiment also includes that the phosphor surfaces are arranged on a plurality of carriers, wherein at least one Carrier, in particular on a plurality of carriers, in each case at least two phosphor surfaces are arranged.
- Carrier several translationally independent, in particular linear, sliding support each with
- Fluorescent surface of a respective carrier can be introduced. Consequently, the light emission pattern of the lighting device can be generated by adding the individual light emission patterns of the phosphor surfaces of the individual substrates located in the illumination surface. A change of the
- Lichtabstrahlmusters can be achieved by a shift of one or more of these carriers and thus a replacement of at least one phosphor surface in the illumination surface.
- This embodiment allows a simple way a particularly diverse embodiment of the
- the carriers in particular like each other in parallel
- Basic shape e.g. a strip-like basic shape.
- the carriers may be arranged in a row adjacent to each other, in particular collinear.
- the simultaneous illumination of the phosphor surfaces of a plurality of carriers can be implemented, for example, by means of one or more primary light beams.
- Primary light rays may e.g. of at least one
- respective light source can be generated, alternatively by means of a common light source and subsequent splitting of the primary light beam into a plurality of partial beams.
- the light emission pattern may be individualized by simultaneous illumination of several be translatable, in particular linear, movable phosphor surfaces to be generated.
- the headlight may in particular be a vehicle headlight.
- the vehicle may be an aircraft, a waterborne vehicle, or a land vehicle.
- land-based vehicle may be a motor vehicle. Particularly preferred is the use of the vehicle headlight in a truck or passenger car.
- Fluorescent surface can produce different automobile light emission patterns, e.g. to produce a
- Lighting device as a vehicle headlight or as a part thereof, wherein the vehicle headlight as an AFS ("Adaptive Front Lighting System") - or an ADB ("Adaptive Driving
- Lane a time of day, a position of the sun, etc. or
- driver-specific parameters such as age, fatigue,
- Such parameters may be determined by a corresponding sensor of the vehicle e.g. a camera, a rain sensor, a distance sensor, etc. are detected.
- a corresponding sensor of the vehicle e.g. a camera, a rain sensor, a distance sensor, etc.
- FIG. 1 shows a sectional side view of a lighting device according to a second embodiment
- FIG. 1 shows a sectional side view of a lighting device according to a third embodiment.
- Fig. 1 shows a lighting device 1, e.g. for one
- Vehicle headlight E The vehicle headlight E may be e.g. be installed in a motor vehicle, e.g. in one
- the vehicle headlamp E generates a light emission pattern L in a far field F around the vehicle, especially in front of the vehicle.
- the lighting device 1 has a plate-like or disk-like carrier 2 for three planar
- Fluorescent volumes hereinafter referred to as
- Fluorescent surfaces 3a to 3c are called.
- Fluorescent surfaces 3a, 3b and 3c lie next to one another in a row on a flat surface of the carrier 2.
- the phosphor surfaces 3a to 3c may be e.g. be sprayed or printed on the support 2.
- the phosphor surfaces 3a to 3c may respectively be shaped onto the carrier 2 as prefabricated plates (e.g., ceramic plates)
- the lighting device 1 further comprises a light source in the form of a laser 4, which e.g. blue primary light P
- the blue primary light P preferably, but not necessarily, has a peak wavelength
- Wavelength range from 360 nm to 480 nm, in particular from 400 nm to 460 nm, on.
- the laser 4 may e.g. have one or more laser diodes.
- the primary light P is radiated obliquely through a small window 5 in a cup-shaped reflector 6 on the support 2 and there can be a
- Illuminating surface 7 generate the light spot
- the beam path of the primary light P remains temporal
- an optic 8 indicated here by a lens is interposed, e.g. for beam collimation. Also like that on the
- Fluorescent surfaces 3a to 3c not to put in the focus of the beam of the primary light beam P (i.e., in particular after the focus or in the divergent beam again to position) to the size of the illumination surface. 7
- the laser 4 and the possible existing optics 8 are located in a common housing and together form a unit. It is alternatively possible to guide the primary light P via a glass fiber to the carrier 2 or to its fluorescent surfaces 3a, 3b or 3c.
- the carrier 2 can be displaced along its extended plane by a translatory linear movement, here along a displacement direction V.
- the carrier 2 assumes different positions, in each of which one of the phosphor surfaces 3a, 3b or 3c lies in the illumination surface 7 or the phosphor surfaces 3a to 3c alternately in the illumination surface 7 can be introduced.
- the carrier 2 can be linearly displaced so that in each case one of the phosphor surfaces 3a, 3b or 3c can be illuminated by the primary light beam P.
- the phosphor areas 3a to 3c are each shown larger than the illumination area 7. However, this is not necessarily necessary, but gives the advantage that free areas of the carrier 2 are not mitbemonyt.
- the illumination surface 7 can be limited by means of a mechanical diaphragm. This can be connected to the carrier 2.
- the illumination surface 7 preferably has an extension (e.g., a diameter or an edge length) of
- At least 20 microns is particularly preferred.
- an extension of the illumination surface 7 of 50 ⁇ to 500 ⁇ . If the achievement of a high luminance is not the main goal, a maximum extent of up to 1000 ⁇ is preferred.
- These values apply in particular to illumination or irradiation with a laser 4 in the form of a laser Laser diode and an incident radiation power of 0.25 W to 60 W. For larger laser power can
- the blue primary light P is at least partially converted into yellow secondary light S. It is from the
- Fluorescent surface 3b overall blue-yellow or white
- converting phosphor may be useful light P, S have a neutral white, a bluish-white or a yellowish-white color.
- the useful light P, S of each of the phosphor surfaces 3a to 3c is at least
- ECE color space ie not necessarily white, but also, for example, yellow, red, etc.
- the phosphor surfaces 3a to 3c are different
- phosphor composition may be any suitable material.
- phosphor composition may be any suitable material.
- phosphor composition may be any suitable material.
- the phosphor surfaces 3a to 3c may in particular have a phosphor composition which is uniform over their area
- the useful light P, S is radiated from the same side, to which also the
- the carrier 2 is reflective on its side facing the phosphor surfaces 3a to 3c.
- the carrier 2 is preferably specularly reflective or designed mirror-like, in particular for all available wavelengths, so that both the passing through the phosphor surfaces 3a, 3b or 3c and on the carrier. 2
- the carrier 2 is for effective heat dissipation of the
- Fluorescent surfaces 3a, 3b and 3c are preferably made of metal or a sapphire-on-metal layer stack. It is also possible between a non-reflective support 2 and the
- Fluorescent surfaces 3a, 3b and 3c to arrange a dichroic layer which transmits the primary light P,
- the useful light P, S which is radiated from the phosphor surface 3a, 3b or 3c, meets a downstream
- the reflector 6 may be, for example, a spherical, paraboloidal or free-form
- the position of the illumination surface 7 and thus also the position of the respective illuminable phosphor surface 3a, 3b or 3c correspond here to a focal spot of the reflector 6. From the secondary optics, the useful light P, S as
- the secondary optics may have further elements (not shown) for beam shaping of the useful light P, S, eg at least one lens, at least one reflector, a shutter or shutter etc. This may for example be done in such a way that the Reflector 6, the useful light P, S steers in a near-field intermediate plane, which may also include a shutter (o. Fig.).
- the intermediate plane can then be imaged, for example, by a refractive optical system into the far field F.
- Lighting surface 7 are respectively associated,
- Light emission patterns L may differ in terms of their shape, color and / or color distribution.
- Light emission pattern L completely with the carrier 2 and thus also the phosphor surfaces 3a to 3c in exactly one position (corresponding to a particular position) of the carrier 2 can be generated.
- the carrier 2 does not need two or more of the so to generate a Lichtabstrahlmusters
- Fluorescent surfaces 3a, 3b or 3c in succession to move through the primary light P, but a desired
- Light emission pattern L is generated by illuminating exactly one of the phosphor surfaces 3a to 3c. It is also possible to change the brightness or laser power of the primary light P as the position of the carrier 2 changes. Thereby, the light emission pattern L can be dimmed, e.g. for generating a daytime running light or a position light.
- Lichtabstrahlmuster L are generated, which has a bluish-white color and having a shape and intensity suitable for use as a daytime running light.
- the second Lichtabstrahlmuster L differs at least in terms of its shape and / or color, possibly also with respect to its brightness from the first Lichtabstrahlmuster L. To distinguish the color of their Lichtabstrahlmuster L like
- the second light-emitting pattern L may emit yellow useful light for use with a turn-signal function.
- converting phosphor e.g., due to a higher concentration and / or layer density.
- a third light emission pattern L is generated, e.g. for use as a fog light or the like Additionally or alternatively, at least one
- Fluorescent surface be present, which is still another
- Light emission pattern L generated e.g. for use as a low beam, as a high beam, etc.
- the number of phosphor surfaces is not limited and may be, for example, two, three or even more than three.
- Illuminating surface 7 takes place by means of a motor
- the linear motor 10 may, for example, have at least one electric motor (in particular a stepping motor) or at least one actuator (for example at least one piezoelectric actuator with or without stroke amplification).
- the linear motor 10 is coupled to a control device 11, which drives the linear motor 10.
- Linear motor 10 and the controller 11 may also be integrated in a single component.
- the control device 11 is set up to control the linear motor 10 in such a way that a phosphor surface 3a, 3b or 3c provided for a specific light emission pattern L is thereby moved linearly into the illumination surface 7.
- the control device 11 can receive control commands ST for actuating the linear motor 10, which command the light emission pattern L to be generated. These control commands ST are from the
- Control device 11 in drive signals for the
- Linear motor 10 implemented, and the drive signals are then provided to the linear motor 10 to specify its linear movement.
- the control commands ST may originate, for example, from vehicle electronics (not shown).
- Control commands ST may be based on operations of a driver of the vehicle, e.g. on a turn on a certain
- Light function such as a high beam, and / or on one
- the automatic selection may be e.g. based on measured values of at least one sensor of the vehicle.
- the light emission pattern L may depend on the brightness, weather conditions (e.g.
- the phosphor surfaces on the carrier. 2 By a movement of the carrier 2 in both planar directions (in the direction V and a direction perpendicular to it in the image plane direction) can all be distributed in two dimensions, eg matrix-shaped, cross-shaped
- Window 5 in the reflector 6 run, but alternatively also pass through different windows to the phosphor surface 3a, 3b or 3c.
- a scanning illumination may also be used.
- Fig. 2 shows in frontal view another possible support 12, e.g. can be used instead of the carrier 2 in the lighting device 1.
- the carrier 12 has four phosphor surfaces 13a, 13b, 13c and 13d arranged next to one another in a 2x2 matrix pattern. There will only be one at a time
- Illuminated phosphor surface 13 a, 13 b, 13 c or 13 d Illuminated phosphor surface 13 a, 13 b, 13 c or 13 d.
- Each individual phosphor surface 13a, 13b, 13c or 13d can consequently produce a complete light emission pattern L.
- a linear movement of the carrier 12 in its plane e.g., generated by means of the linear motor 10
- it can be moved such that each of the phosphor surfaces 13a, 13b, 13c, or 13d can be brought into the illumination surface 7, respectively.
- the linear movement is through the double-sided arrows
- the individual phosphor surfaces 13a, 13b, 13c or 13d contain different distributions of phosphors.
- the phosphor surface 13a may be homogeneously coated with a blue-yellow converting phosphor of a first layer thickness in order to obtain a cold-white light
- the phosphor surface 13b may be homogeneously coated with a blue-yellow converting phosphor of a second layer thickness, which is thicker than the first layer thickness. As a result, a yellowish-white light can be generated and emitted. A warmer hue can also be achieved by adding a blue-red converting phosphor.
- the phosphor surface 13c may be homogeneously coated with a blue-yellow-converting phosphor of a third layer thickness, which is smaller than the first layer thickness. As a result, a bluish-white light can be generated and radiated.
- the phosphor surface 13d may be several differently homogeneous with a blue-yellow
- Fluorescent surface 13 a be occupied.
- Fluorescent surfaces need not be rectangular, but may take other forms.
- Fluorescent surfaces may also contain areas that are free of phosphor. Also, an irregular arrangement of the phosphor surfaces is possible. Likewise, the
- Arrangement of the phosphors within a fluorescent surface is not limited. Any desired division can be used. Realizations are possible both in a transmissive use (transmitted light arrangement as shown) and in a reflective use of the phosphor.
- the downstream secondary optics may, as described, be a reflector shell, but may also be a far-field refractive optic, for example. This refractive optics may be particularly advantageous for the transmitted light arrangement.
- the carrier 12 may be used for a reflective construction e.g. a metallic support, for a transmissive construction e.g. a glass or sapphire carrier.
- Fig. 3 shows a lighting device 21, e.g. for one
- Vehicle headlight E which is similar to the lighting device 1 is constructed. However, there are now two reflectors 6a and 6b or corresponding reflection regions of a reflector 6a, 6b. In addition, you can now on opposite
- Fluorescent surfaces 3a and 3d, 3b and 3e and 3f and 3c are irradiated simultaneously, of different lasers 4a and 4b. In other words, a first
- Illuminating surface 7a are provided on a first flat side of the carrier 2 and a second illumination surface 7b on a second flat side of the carrier 2.
- the reflectors 6a and 6b are in turn of the
- a light emission pattern L in the far field F can then be composed by a superimposition of the useful light emitted by both reflectors 6a and 6b (not shown). This corresponds to an addition of the
- both lasers 6a, 6b are in operation.
- a high beam may be generated by operation of both lasers 6a, 6b, a low beam, e.g. by operating only one of
- a light color and / or shape of the light emission patterns emitted by the two reflectors 6a and 6b may be the same or different. Also, a light color of the primary light P emitted from the two lasers 6a, 6b may be the same or different.
- Fig. 4 shows a lighting device 31, e.g. for one
- Vehicle headlight E in which now several (heres
- the beams 2a, 2b, 2c and 2d are displaceable parallel to each other along their longitudinal axes, as by the double arrows
- the beams 2a to 2d are located immediately adjacent to each other (i.e., here separated only by a virtually negligible gap).
- Illuminating surface 32 located phosphor surfaces A2 to D2 at a time (stationary) over a large area with the
- the primary light P may be applied, in particular via at least one movable, in particular pivotable, mirror 33 to the
- Illuminating surface 32 to be deflected, for example, similar to a flying spot ⁇ method.
- the pivotable mirror 33 may be a MEMS component, for example.
- the laser 4 may deliberately and be switched off (or dimmable). The so produced
- Lichtabstrahlmuster may at fixed position or rotational position of the carrier 2a, 2b, 2c and 2d by a change of
- Illumination pattern can be varied.
- the illuminating surface 32 which can be illuminated line by line by the laser 4, comprises a line arranged transversely to its direction of displacement next to one another
- the phosphor surfaces A 1 to A 3, B 1 to B 3, C 1 to C 3 and D 1 to D 3 of a respective strip-shaped carrier 2 a to 2 d may, in particular, have a different phosphor composition (for example, with respect to one type, quantity and / or area
- respective linear motors 10a to 10d may be used, which are controllable together by the control device 11.
- the control device 11 can also receive control commands ST for controlling the linear motors 10a to 10d, which predetermine the light emission pattern L to be generated. These Control commands ST are received by the control device 11 in FIG.
- a stationary illumination of the phosphor areas A2 to D2 located in the illumination area 32 may be performed, e.g. through a correspondingly wide, stationary beam of primary light P.
- the number of independently mobile carriers is not limited and may include hundreds or even thousands of independently mobile carriers.
- the illuminable area 32 can be several lines
- the lighting device 31 may be implemented in a reflective arrangement or in a transmissive arrangement.
- Translational motion a displaced on a curved trajectory or trajectory at least one
- Fluorescent surface can be used.
- the translation movement may be superimposed by a rotational movement of the at least one phosphor surface,
- a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014208660.4A DE102014208660A1 (de) | 2014-05-08 | 2014-05-08 | Erzeugen eines Lichtabstrahlmusters in einem Fernfeld |
| PCT/EP2015/059349 WO2015169665A1 (de) | 2014-05-08 | 2015-04-29 | Erzeugen eines lichtabstrahlmusters in einem fernfeld |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3140591A1 true EP3140591A1 (de) | 2017-03-15 |
| EP3140591B1 EP3140591B1 (de) | 2018-09-12 |
Family
ID=53175003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15721634.2A Not-in-force EP3140591B1 (de) | 2014-05-08 | 2015-04-29 | Erzeugen eines lichtabstrahlmusters in einem fernfeld |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9945530B2 (de) |
| EP (1) | EP3140591B1 (de) |
| CN (1) | CN106461181B (de) |
| DE (1) | DE102014208660A1 (de) |
| WO (1) | WO2015169665A1 (de) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6785458B2 (ja) * | 2016-03-08 | 2020-11-18 | パナソニックIpマネジメント株式会社 | 光源装置 |
| JP6791644B2 (ja) * | 2016-03-24 | 2020-11-25 | 株式会社小糸製作所 | 車両用前照灯 |
| DE102016208146A1 (de) * | 2016-05-11 | 2017-11-16 | Osram Gmbh | Bewegen einer Konverter-Einrichtung |
| DE102017100902B4 (de) * | 2017-01-18 | 2019-10-24 | Vossloh-Schwabe Lighting Solutions GmbH & Co. KG | Konvertervorrichtung und Verfahren zu deren Betrieb |
| FR3063127B1 (fr) * | 2017-02-17 | 2019-04-05 | Valeo Vision | Systeme optique bi-couleur a source lumineuse unique |
| DE102017103656A1 (de) | 2017-02-22 | 2018-08-23 | Osram Gmbh | Beleuchtungsvorrichtung mit mehreren lichtquellen |
| DE102017203892A1 (de) * | 2017-03-09 | 2018-09-13 | Bayerische Motoren Werke Aktiengesellschaft | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
| US10771155B2 (en) | 2017-09-28 | 2020-09-08 | Soraa Laser Diode, Inc. | Intelligent visible light with a gallium and nitrogen containing laser source |
| CN109656085B (zh) * | 2017-10-10 | 2020-12-01 | 深圳市绎立锐光科技开发有限公司 | 发光装置及使用该发光装置的汽车照明装置 |
| DE102017220918A1 (de) * | 2017-11-23 | 2019-05-23 | Osram Gmbh | Umwandlung von Primärlicht in Sekundärlicht mittels eines Wellenlängenkonverters |
| TWI803532B (zh) | 2018-11-02 | 2023-06-01 | 揚明光學股份有限公司 | 圖案投射裝置及其製造方法 |
| EP3686483A1 (de) * | 2019-01-23 | 2020-07-29 | ZKW Group GmbH | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer |
| DE102019102460A1 (de) * | 2019-01-31 | 2020-08-06 | Bayerische Motoren Werke Aktiengesellschaft | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
| EP3922514A4 (de) * | 2019-02-04 | 2022-03-09 | Denka Company Limited | Reflektor und bestrahlungsvorrichtung |
| US10950760B2 (en) * | 2019-02-06 | 2021-03-16 | Osram Opto Semiconductors Gmbh | Two component glass body for tape casting phosphor in glass LED converters |
| US20220390089A1 (en) * | 2019-11-05 | 2022-12-08 | Optonomous Technologies, Inc. | Laser phosphor illumination system using stationary phosphor fixture |
| US11757250B2 (en) | 2019-12-23 | 2023-09-12 | Kyocera Sld Laser, Inc. | Specialized mobile light device configured with a gallium and nitrogen containing laser source |
| DE102022108232A1 (de) * | 2022-04-06 | 2023-10-12 | Webasto SE | Beleuchtungsvorrichtung für ein Fahrzeug und Verfahren zum Betreiben einer Beleuchtungsvorrichtung für ein Fahrzeug |
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|---|---|---|---|---|
| US7474286B2 (en) | 2005-04-01 | 2009-01-06 | Spudnik, Inc. | Laser displays using UV-excitable phosphors emitting visible colored light |
| US8523924B2 (en) * | 2006-06-02 | 2013-09-03 | Koninklijke Philips N.V. | Colored and white light generating lighting device |
| DE102007037875A1 (de) | 2007-08-10 | 2009-02-12 | Osram Gesellschaft mit beschränkter Haftung | Strahlungsemittierende Vorrichtung |
| US7984999B2 (en) * | 2007-10-17 | 2011-07-26 | Xicato, Inc. | Illumination device with light emitting diodes and moveable light adjustment member |
| DE102007055480B3 (de) | 2007-11-21 | 2009-08-13 | Audi Ag | Beleuchtungsvorrichtung eines Fahrzeugs |
| DE102008063634B4 (de) | 2008-12-18 | 2021-03-11 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Leuchtmittel und Projektor mit mindestens einem solchen Leuchtmittel |
| US8684560B2 (en) * | 2009-11-18 | 2014-04-01 | Stanley Electric Co., Ltd. | Semiconductor light source apparatus and lighting unit |
| 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 |
| EP2526454B1 (de) | 2010-06-22 | 2017-06-14 | OSRAM GmbH | Polyeder, rotationsanordnungen, lichtquellenanordnungen, lichtquellenvorrichtung, beleuchtungsvorrichtung, dreidimensionaler körper und projektoren |
| US8985793B2 (en) * | 2010-08-02 | 2015-03-24 | Sharp Kabushiki Kaisha | Illumination device |
| DE102010062465B4 (de) * | 2010-12-06 | 2021-02-04 | Coretronic Corporation | Leuchtvorrichtung |
| DE102010062460A1 (de) * | 2010-12-06 | 2012-06-06 | Osram Ag | Leuchtvorrichtung |
| DE102011002961A1 (de) * | 2011-01-21 | 2012-07-26 | Osram Ag | Leuchtstoffvorrichtung mit Innenkühlung und Reflektorleuchtenanordnung mit dieser Leuchtstoffvorrichtung |
| JP5261549B2 (ja) * | 2011-08-08 | 2013-08-14 | シャープ株式会社 | 照明装置 |
| DE102012203442B4 (de) * | 2012-03-05 | 2021-08-05 | Coretronic Corporation | Beleuchtungsvorrichtung mit einer pumplaserreihe und verfahren zum betreiben dieser beleuchtungsvorrichtung |
| DE102012004629A1 (de) * | 2012-03-06 | 2012-10-04 | Daimler Ag | Lichterzeugungsanordnung und Scheinwerfer mit einer Lichterzeugungsanordnung |
| WO2013164276A1 (de) * | 2012-05-03 | 2013-11-07 | Osram Gmbh | Fahrzeug-leuchtvorrichtung |
| FR2993831B1 (fr) | 2012-07-27 | 2015-07-03 | Valeo Vision | Systeme d'eclairage adaptatif pour vehicule automobile |
| DE102013016277A1 (de) * | 2013-09-28 | 2015-04-16 | GM GLOBAL TECHNOLOGY OPERATION LLC (n. d. Ges. d. Staates Delaware) | Scheinwerfer, Kraftfahrzeug mit einem Scheinwerfer und Verfahren zum Betreiben eines Scheinwerfers |
| DE102013226639A1 (de) * | 2013-12-19 | 2015-06-25 | Osram Gmbh | Erzeugen eines Lichtabstrahlmusters in einem Fernfeld |
| DE102014100904A1 (de) * | 2014-01-27 | 2015-07-30 | Hella Kgaa Hueck & Co. | Beleuchtungsvorrichtung für Fahrzeuge |
-
2014
- 2014-05-08 DE DE102014208660.4A patent/DE102014208660A1/de not_active Withdrawn
-
2015
- 2015-04-29 WO PCT/EP2015/059349 patent/WO2015169665A1/de not_active Ceased
- 2015-04-29 EP EP15721634.2A patent/EP3140591B1/de not_active Not-in-force
- 2015-04-29 US US15/309,473 patent/US9945530B2/en active Active
- 2015-04-29 CN CN201580023710.9A patent/CN106461181B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014208660A1 (de) | 2015-11-12 |
| WO2015169665A1 (de) | 2015-11-12 |
| US9945530B2 (en) | 2018-04-17 |
| CN106461181A (zh) | 2017-02-22 |
| CN106461181B (zh) | 2019-07-30 |
| US20170138556A1 (en) | 2017-05-18 |
| EP3140591B1 (de) | 2018-09-12 |
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