DE102014001299A1 - Method for operating a headlight for a motor vehicle and headlights - Google Patents

Method for operating a headlight for a motor vehicle and headlights

Info

Publication number
DE102014001299A1
DE102014001299A1 DE102014001299.9A DE102014001299A DE102014001299A1 DE 102014001299 A1 DE102014001299 A1 DE 102014001299A1 DE 102014001299 A DE102014001299 A DE 102014001299A DE 102014001299 A1 DE102014001299 A1 DE 102014001299A1
Authority
DE
Germany
Prior art keywords
radiation
predetermined
characterized
light source
light
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.)
Pending
Application number
DE102014001299.9A
Other languages
German (de)
Inventor
Carsten Gut
Ingo Rotscholl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Priority to DE102014001299.9A priority Critical patent/DE102014001299A1/en
Publication of DE102014001299A1 publication Critical patent/DE102014001299A1/en
Application status is Pending legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16Laser light sources

Abstract

The invention relates to a method for operating a headlight (10) for a motor vehicle by emitting a first radiation (14) having a first wavelength with a light source (12), deflecting the first radiation (14) with a deflection device (16) deflecting the first radiation (14) for a predetermined time duration onto a predetermined region of a transducer element (18), converting the first radiation (14) deflected by the deflection device (16) into a second radiation (20) for each of the predetermined regions. having at least a second wavelength with the transducer element (18), setting a respective intensity of the second radiation (20) for each of the predetermined regions, and fitting the first radiation (14) for each of the predetermined regions such that the first radiation (14) the respective predetermined area is converted into the second radiation (20) with the specified light intensity.

Description

  • The present invention relates to a method for operating a headlamp for a motor vehicle. Moreover, the present invention relates to a headlamp for a motor vehicle. Finally, the present invention relates to a motor vehicle with such a headlight.
  • Headlights for motor vehicles may include as light sources a plurality of light-emitting diodes (LEDs), which are arranged for example in a plurality of segments. In such headlamps provided with the headlamps illuminance of the individual segments can be adjusted independently by pulse width modulation. By controlling the individual segments, light distributions can be dynamically adapted to various driving situations. The light output is provided individually for each segment and can not be deflected into adjacent segments. Thus, the light output can not be distributed arbitrarily. In addition, the local resolution of the pixels generated by the individual segments is limited by the number of segments or the number of light-emitting diodes.
  • New approaches for the representation of dynamic light distributions could be so-called laser scanners. Such headlamps comprise as a light source a corresponding semiconductor laser. In addition, they comprise a transducer element with which the radiation emitted by the light source can be converted into radiation having a different wavelength or different wavelengths. As a transducer element or converter element, for example, an element of phosphorus can be used.
  • The DE 10 2010 015 125 A1 describes a method for controlling a luminous flux of a lighting device with a number of semiconductor illuminants, which is set up for marking and marking of traffic areas of airports, in which period intervals are given with a fixed period length, a mean luminous flux for the operation of the semiconductor lamps within the period intervals is selected and In each of the period intervals, a number of current pulses with a pulse amplitude and a fixed pulse duration is generated.
  • In addition, the refers DE 103 49 553 A1 to a method and a circuit arrangement for brightness control of at least one LED, wherein in the at least one LED, a pulse current with current pulses of certain pulse amplitude and pulse duration is impressed and wherein the brightness of the frequency of the pulse current is varied.
  • In addition, the describes DE 20 2011 100 791 U1 a luminaire for illuminating sets of films, theaters, rooms, buildings and the like with color-variable light comprising at least two light sources of different color temperature and a color mixing control device for variably controlling the color temperature of the light emitted by the light, the color mixing control device associated with the light sources Power control modules for controlling the respective light output provided by the lamps.
  • Moreover, from the DE 103 44 174 A1 a headlamp for vehicles, which has at least one light source and a light guide unit for generating at least one predetermined light distribution, wherein the light guide unit has a deflection surface with a plurality of independently controllable and in at least two positions micro mirrors, wherein the micromirrors each independent by at least two Swivel axes are arranged adjustable.
  • Furthermore, the DE 10 2011 080 559 A1 a lighting device of a vehicle having at least one light source and a light guide unit for generating at least one predetermined light distribution. In this case, the light guide unit comprises a deflection surface with a plurality of micromirrors arranged independently of one another about at least one pivot axis.
  • It is an object of the present invention to operate a headlight for a motor vehicle more effectively.
  • This object is achieved by a method having the features of the patent claim 1 and by a headlamp with the features of claim 7. Advantageous developments of the present invention are the subject of the dependent claims.
  • The method according to the invention for operating a headlight for a motor vehicle comprises emitting a first radiation having a first wavelength with a light source, deflecting the first radiation with a deflection device, wherein the first radiation is deflected in each case for a predetermined time duration onto a predetermined region of a transducer element converting the first radiation deflected by the deflector for each of the predetermined regions into a second radiation having at least a second wavelength with the transducer element, setting a respective intensity of the second radiation for each of the predetermined regions and adjusting the first radiation for each of the predetermined regions such that the first radiation for the respective predetermined region is converted into the second radiation having the specified light intensity.
  • The headlight comprises a light source with which a first radiation can be emitted. For example, light can be emitted in the visible wavelength range. In addition, it is also conceivable that light is emitted in the ultraviolet wavelength range. The first radiation emitted by the light source strikes a deflection device, with which the first radiation can be deflected onto a transducer element. The transducer element is excited by the first radiation of the light source and emits light having a wavelength which may be different from the wavelength of the radiation of the light source. The second radiation emitted by the transducer element may also comprise a plurality of wavelengths. For example, the radiated radiation can provide a broadband light spectrum. In particular, the headlight is designed to emit light in the white wavelength range. The radiation with the first wavelength and the radiation with the at least one second wavelength are thus superimposed to light in the white wavelength range.
  • In the present case, a plurality of regions are determined or fixed on the transducer element, which are illuminated in sequence with the first radiation. For this purpose, the first radiation is deflected with the deflection device so that the first radiation is directed in each case for a predetermined time duration to the respective predetermined area. In addition, a light distribution for the headlight is specified. Based on the predetermined light distribution, a light intensity of the second radiation is determined for each of the predetermined regions. Depending on the specific light intensity, it is determined how and, in particular, for which time duration the light source is to be operated in the respective preselected range, so that the light intensity for the second radiation is established. Thus, a light intensity distribution can be dynamically adjusted with the headlamp.
  • Preferably, a power of the first radiation is adjusted for each of the predetermined ranges. In other words, the radiation power of the light source is adjusted for each of the predetermined areas. Thus, the illuminance of the second radiation can be adjusted in the manner of a pulse amplitude modulation.
  • In one embodiment, the first radiation for each of the predetermined regions is adjusted by a drive time during which the light source is activated within the predetermined time duration. The deflecting device directs the first radiation to each of the predetermined regions for a predetermined time duration, respectively. In order to adjust the intensity of the second radiation emitted by the transducer element, the driving time in which the light source is turned on is varied. Thus, the light intensity of the second radiation can be adjusted in the manner of a pulse width modulation.
  • In a further embodiment, the light source comprises a plurality of light elements and the first radiation is adjusted for each of the predetermined regions by the number of light elements activated during the predetermined time duration. Different power levels can be provided by the individual lighting elements, which can be switched on and off correspondingly for each of the predetermined areas.
  • In a further embodiment, the first radiation is deflected along the predetermined regions in a line-shaped, column-shaped and / or grid-shaped manner with the deflection device. The first radiation can be deflected as desired with the deflection device. The headlight can be designed in the manner of a laser scanner. Preferably, the frequency at which the deflection device is operated is chosen so that the deflection of the rays is not perceptible to the human eye. In particular, the refresh rate of the entire light intensity distribution is sufficiently high to choose. Thus, the light distribution can be adjusted accordingly by a corresponding control of the deflection.
  • Preferably, the light distribution is set such that a predetermined illumination area is illuminated on a roadway with a constant luminance with the headlight. By adapting the first radiation, a homogeneous illumination of the road ahead of the motor vehicle can be made possible.
  • The headlight for a motor vehicle according to the invention comprises a light source for emitting a first radiation having a first wavelength, a deflection device for deflecting the first radiation with a deflection device, wherein the deflection device deflects the first radiation in each case for a predetermined time duration to a predetermined region of a transducer element, wherein the transducer element converts the first radiation deflected by the deflector into a second radiation having at least one second wavelength for each of the predetermined regions, and control means for setting a respective intensity of the second radiation for each of the predetermined regions and adjusting the first radiation for each the predetermined areas such that the transducer element converts the first radiation for the respective predetermined region into the second radiation with the specified light intensity.
  • The deflection device preferably comprises at least one micromechanical mirror and / or at least one acousto-optic deflector. Each micromechanical mirror can be designed, for example, pivotable about two axes. Preferably, at least two acousto-optical deflectors or a combination of an acousto-optic deflector and a mirror can be used. With an acousto-optic deflector (AOD), the radiation emitted by the lighting device can be influenced with respect to its propagation direction. An acousto-optical deflector also has the advantage that an area to be illuminated on the transducer element can be illuminated starting from each previously illuminated area within the same switching time. The micromechanical mirror has the advantage that it can be moved at a high frequency due to its small dimensions. In particular, the deflecting device can be moved at a frequency of a few kHz. For example, the micromechanical mirror can be operated at its resonant frequency. Thus, a space-saving deflection can be provided.
  • In one embodiment, the light source comprises at least one semiconductor laser. It is also conceivable that the light source comprises a plurality of semiconductor lasers.
  • The motor vehicle according to the invention comprises at least one headlight according to the invention. Preferably, the motor vehicle comprises two of the headlights.
  • The advantages and further developments described above in connection with the method according to the invention apply mutatis mutandis to the headlight according to the invention.
  • The present invention will now be explained in more detail with reference to the accompanying drawings. Showing:
  • 1 a schematic representation of a headlamp of a motor vehicle;
  • 2 to 5 various variants of illumination of a transducer element of the headlamp;
  • 6 a diagram illustrating the activation of the headlamp and a lighting a roadway; and
  • 7 Various variants of a control of a light source of the headlamp.
  • The embodiments described in more detail below represent preferred embodiments of the present invention.
  • 1 shows a headlight 10 for a motor vehicle in a sectional side view. The headlight 10 includes a light source 12 , which is formed for example as a semiconductor laser or laser The light source 12 may also include multiple semiconductor lasers. With the light source 12 can be a first radiation 14 are emitted at a first wavelength.
  • This is shown schematically schematically by an arrow. With the light source 12 For example, light can be emitted in the visible wavelength range. Alternatively, with the light source 12 Be emitted in the ultraviolet wavelength range.
  • The of the light source 12 emitted, first radiation 14 meets a deflector 16 with which the first radiation 14 can be distracted. The deflection device 16 may include one or more micromechanical mirrors and / or one or more acousto-optic deflectors. With the deflector 16 may be the first radiation 14 to predetermined areas of a transducer element 18 be steered. The first radiation 14 can scan over the transducer element 18 be guided and illuminate each of the predetermined areas for a predetermined period of time.
  • The transducer element 18 is designed to be that of the light source 12 emitted, first radiation 14 into a second radiation 20 with a different wavelength or different wavelengths. The transducer element 18 can be due to the radiation of the light source 12 be stimulated accordingly, causing the transducer element 18 the second radiation 20 radiates. The transducer element 18 is in particular designed such that it emits radiation or light in the white wavelength range. This is illustrated schematically schematically by an arrow. The transducer element 18 For example, it may be formed of a nitride-phosphor or a cerium-doped YAG (yttrium-aluminum-garnet) phosphor.
  • For the headlight 10 a light distribution can be specified. Such a light distribution may be, for example, a dipped beam, a high beam, a city light, a highway light or the like. Based on this light distribution becomes a light intensity of the second radiation 20 determined for each of the areas. Thus the light intensity of the second radiation 20 provided for the respective areas can be, will be the first radiation 14 adapted for each of the areas. In particular, the average power P 'associated with the light source 12 be adjusted during the predetermined time duration in which the respective predetermined area is illuminated. The adjustment may be within the limits of the speed of the deflector 16 predetermined and provided by the Bildwiederholfrequenzanforderungen opportunities are minimized or optimized. The 2 to 5 show different examples, such as the transducer element 18 with the first radiation 14 can be illuminated.
  • In the example of 2 becomes an area 22a in the left area of the transducer element 18 with the maximum power P by means of the light source 12 illuminated. 3 shows a variant in which a surface 22b covering the entire area of the transducer element 18 is associated with the light source 12 is illuminated. In the example below 4 will complete the power P on two surfaces 22c and 22d distributed. Of course, only one of the surfaces could 22c or 22d be illuminated, then only half the power P would be needed. Alternatively, just one of the surfaces could be 22c or 22d be illuminated even brighter. 5 shows any light distribution, where four areas 22e to 22h with the light source 12 be illuminated. Some of the areas 22e to 22h are irradiated with average power P, others of the areas 22e to 22h on the other hand, they are not irradiated at all and, in turn, others of the areas 22e to 22h are irradiated with significantly more power P (just those from the weak or not irradiated areas). Thus, with the headlight 10 Any light distributions are provided. One is only limited by the maximum available power and the scan speed or the maximum available pulse time. This means that there is no arbitrarily large area as bright as possible illuminated.
  • The illuminance that hits the road ahead of the motor vehicle, however, falls square with the distance r. With the method for operating a headlamp 10 For example, it is possible to produce a light distribution which can be kept homogeneous over the complete lane, since the power falling with the distance to the square r 2 can be compensated for with an accuracy below the local resolution of the human eye. This is based on 6 clarified.
  • In 6 shows a first graph 24 on whose abscissa the distance r from the headlight 10 is applied to the roadway and on the ordinate the illuminance E is applied. The illuminance E impinging on the ground decreases quadratically with the distance r at a constant luminous flux. The rear areas on the road look darker. Thus, starting from the eye of the driver no constant luminance. Further shows 6 a second graph, on the abscissa 28 the pixels are correlated with the distance applied. The ordinate plots the average power P 'emitted by the light source.
  • A homogeneous illumination can be generated via highly accurate adaptation of the laser power P over the location r. To compensate for the squared offsets, those predetermined areas imaged at a greater distance are operated at a higher power P. The entire area looks homogeneous to the observer, as long as the human eye can no longer resolve the individual pixels. This is through the graph 30 clarified. This makes it possible to set a perception-relevant variable, such as luminance, constantly.
  • The mean power P 'of the first radiation 14 for the predetermined area with the light source 12 is output can be adjusted by the drive time during which the light source is activated within the predetermined time duration. Thus, the light intensity of the second radiation 20 be adapted in the manner of a pulse width modulation. Alternatively or additionally, power P or radiation power can be adapted. Thus, the light intensity of the second radiation 20 be adapted in the manner of a pulse amplitude modulation. Consequently, a light control by dynamic stepwise modulation of the pulse widths and pulse amplitudes, by targeted switching on and off individual luminous elements, take place.
  • Depending on the light distribution to be realized, a dynamic algorithmic method is required that reduces both the drive times t a and the laser power P to a reasonable level. First, the powers predetermined by the light distribution per predetermined range or per pixel are determined and sorted. Starting at the highest pixel powers, the maximum available power P is pulsed and the pulse time or drive time t a is determined. Especially at the point that is below a critical pulse time to prevent technically complex to be implemented pulse lengths, the next power level is used up to the lowest power level.
  • The power levels result from the number of light elements or laser diodes in the headlight 10 , With n laser diodes a maximum of 2 n power levels are possible. In the case of identical laser diodes, the number of course reduces, as in the case of separate laser beams. The pulse times t a thus correspond to a pulse width, the power levels of a pulse amplitude modulation. The distance the peaks are given by the refresh rate. In simulations, it has been shown that with this approach, initially an area is created in which at full power the pulse times t a are varied (at high light intensities) and adjoined by an area where all maximum short pulses are operated at different power levels.
  • In general, an overall shorter actual pulse time t a will result than that which is available. This excess can now either be used to generate additional luminous flux, or to reduce the maximum occurring power by extending associated pulses, ie to lower the uppermost power levels.
  • For each predetermined range or for each pixel, the drive time t a and pulse amplitude or power P is adjusted as a function of the light distribution to be realized. Each pixel is illuminated as short as possible (above a critical time) with the maximum possible power P. Thus, the power P is also transportable from one pixel to another pixel. 7 shows four different graphs 32 to 38 in which the time t is plotted on the abscissa and the power P is plotted on the ordinate. In the example of Graph 32 the maximum average power P 'is achieved by maximum pulse duration t a and maximum amplitude P. The graph 34 shows an example of a lower average power P ', by reduced pulse duration t a , wherein the maximum power P is provided. When in graph 36 In addition, the power P is reduced. The graph 38 shows the lowest average power P 'by short pulse duration t a and minimum power P.
  • By combining pulse widths and pulse amplitude modulation, the requirements for the pulse times are reduced. In addition, any arbitrary light intensity distribution can be dynamically created by a clever algorithmic approach and thus the required power P can be minimized, which both reduces the load on the conversion phosphor and increases photobiological safety. In addition, the number of usable dimming levels increases to a maximum.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102010015125 A1 [0004]
    • DE 10349553 A1 [0005]
    • DE 202011100791 U1 [0006]
    • DE 10344174 A1 [0007]
    • DE 102011080559 A1 [0008]

Claims (10)

  1. Method for operating a headlamp ( 10 ) for a motor vehicle by - emitting a first radiation ( 14 ) having a first wavelength with a light source ( 12 ), - deflecting the first radiation ( 14 ) with a deflection device ( 16 ), the first radiation ( 14 ) each for a predetermined period of time to a predetermined region of a transducer element ( 18 ) is deflected and - the deflection with the deflector ( 16 ) deflected, first radiation ( 14 ) for each of the predetermined regions into a second radiation ( 20 ) having at least a second wavelength with the transducer element ( 18 ), characterized by - setting a respective intensity of the second radiation ( 20 ) for each of the predetermined regions and - adjusting the first radiation ( 14 ) for each of the predetermined regions such that the first radiation ( 14 ) for the respective predetermined area into the second radiation ( 20 ) is converted with the specified light intensity.
  2. Method according to claim 1, characterized in that a power (P) of the first radiation ( 14 ) is adjusted for each of the predetermined ranges.
  3. Method according to claim 1 or 2, characterized in that the first radiation ( 14 ) for each of the predetermined ranges by a drive time (t a ) during which the light source ( 12 ) is activated within the predetermined time duration is adjusted.
  4. Method according to claim 2 or 3, characterized in that the light source ( 12 ) comprises a plurality of light elements and the first radiation ( 14 ) for each of the predetermined areas is adjusted by the number of the lighting elements activated during the predetermined time duration.
  5. Method according to one of the preceding claims, characterized in that the first radiation ( 14 ) along the predetermined regions in a line-shaped, column-shaped and / or grid-shaped manner with the deflection device ( 16 ) is distracted.
  6. Method according to one of the preceding claims, characterized in that the light distribution is set such that a predetermined illumination area on a roadway with a constant illuminance (E) with the headlight ( 10 ) is illuminated.
  7. Headlights ( 10 ) for a motor vehicle with - a light source ( 12 ) for emitting a first radiation ( 14 ) having a first wavelength and - a deflection device ( 16 ) for deflecting the first radiation ( 14 ), wherein the deflection device ( 16 ) the first radiation ( 14 ) each for a predetermined period of time to a predetermined region of a transducer element ( 18 ), wherein - the transducer element ( 18 ) with the deflection device ( 16 ) deflected, first radiation ( 14 ) for each of the predetermined regions into a second radiation ( 20 ) with at least one second wavelength, characterized by - a control device for determining a respective intensity of the second radiation ( 20 ) for each of the predetermined areas and for adjusting the first radiation ( 14 ) for each of the predetermined regions such that the transducer element ( 18 ) the first radiation ( 14 ) for the respective predetermined area into the second radiation ( 20 ) with the specified light intensity.
  8. Headlights ( 10 ) according to claim 7, characterized in that the deflection device ( 16 ) comprises at least one micromechanical mirror and / or at least one acousto-optic deflector.
  9. Headlights ( 10 ) according to claim 7 or 8, characterized in that the light source comprises at least one semiconductor laser.
  10. Motor vehicle with a headlight ( 10 ) according to any one of claims 7 to 9.
DE102014001299.9A 2014-01-31 2014-01-31 Method for operating a headlight for a motor vehicle and headlights Pending DE102014001299A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102014001299.9A DE102014001299A1 (en) 2014-01-31 2014-01-31 Method for operating a headlight for a motor vehicle and headlights

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014001299.9A DE102014001299A1 (en) 2014-01-31 2014-01-31 Method for operating a headlight for a motor vehicle and headlights
PCT/EP2014/003402 WO2015113583A1 (en) 2014-01-31 2014-12-17 Method for operating a headlight for a motor vehicle, and headlight
EP14823904.9A EP3099529A1 (en) 2014-01-31 2014-12-17 Method for operating a headlight for a motor vehicle, and headlight

Publications (1)

Publication Number Publication Date
DE102014001299A1 true DE102014001299A1 (en) 2015-08-06

Family

ID=52282670

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102014001299.9A Pending DE102014001299A1 (en) 2014-01-31 2014-01-31 Method for operating a headlight for a motor vehicle and headlights

Country Status (3)

Country Link
EP (1) EP3099529A1 (en)
DE (1) DE102014001299A1 (en)
WO (1) WO2015113583A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102446A1 (en) * 2016-02-12 2017-08-17 Hella Kgaa Hueck & Co. Lighting device for vehicles
DE102016122492A1 (en) * 2016-11-22 2018-05-24 HELLA GmbH & Co. KGaA Generation of a homogeneous light distribution as a function of the topography and the measured luminance
DE102017223448A1 (en) * 2017-12-20 2019-06-27 Audi Ag Light projection device for a motor vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349553A1 (en) 2003-06-25 2005-01-20 Public Screen & Lightsystems Ag LED brightness regulation method for regulating the brightness of one or more LEDs, where a brightness range is defined by the amplitude of controlling current pulses, while a given brightness is defined by the pulse frequency
DE10344174A1 (en) 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Light beam deflection and scattering system for road vehicle headlight consists of 45 degree mirror assembly carrying large number of micro-mirrors each at slightly different angle to each other
DE102008022795A1 (en) * 2008-05-08 2009-11-12 Osram Opto Semiconductors Gmbh Motor vehicle headlight has semiconductor lasers as light source of motor vehicle headlight, and light modulator which modifies directional characteristic of light
US20110080753A1 (en) * 2008-05-28 2011-04-07 Osram Gesellschaft Mit Beschraenkter Haftung Vehicle lighting device with at least two semiconductor lamp elements
DE102010015125A1 (en) 2010-04-16 2011-10-20 Hella Kgaa Hueck & Co. Method for controlling a luminous flux of a lighting device with a number of semiconductor illuminants, which is set up for the identification and marking of traffic areas of airports
DE202011100791U1 (en) 2011-05-17 2012-08-24 Christian Braun Lamp with variable color light
DE102011080559A1 (en) 2011-08-05 2013-02-07 Bayerische Motoren Werke Aktiengesellschaft Illumination device for motor car, has deflection surface with micro mirrors adjustably arranged at pivotal axis independent of each other, where micro mirrors are externally excited and oscillated to achieve increased attenuation
WO2014121315A1 (en) * 2013-02-07 2014-08-14 Zizala Lichtsysteme Gmbh Headlight for a motor vehicle and method for distributing light

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1302066A1 (en) * 2000-07-09 2003-04-16 3DV Systems Ltd. Camera having a through the lens pixel illuminator
US6969183B2 (en) * 2002-12-27 2005-11-29 Ichikoh Industries, Ltd. Digital lighting apparatus for vehicle, controller for digital lighting apparatus, and control program for digital lighting apparatus
JP4289288B2 (en) * 2004-12-03 2009-07-01 セイコーエプソン株式会社 Light source device and image display device
JP4881255B2 (en) * 2007-08-13 2012-02-22 株式会社小糸製作所 Vehicle headlamp
DE102010028949A1 (en) * 2010-05-12 2011-11-17 Osram Gesellschaft mit beschränkter Haftung headlight module
DE102012213311A1 (en) * 2012-07-30 2014-01-30 Osram Gmbh Projection with semiconductor light sources, deflecting mirrors and transmitted light areas

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349553A1 (en) 2003-06-25 2005-01-20 Public Screen & Lightsystems Ag LED brightness regulation method for regulating the brightness of one or more LEDs, where a brightness range is defined by the amplitude of controlling current pulses, while a given brightness is defined by the pulse frequency
DE10344174A1 (en) 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Light beam deflection and scattering system for road vehicle headlight consists of 45 degree mirror assembly carrying large number of micro-mirrors each at slightly different angle to each other
DE102008022795A1 (en) * 2008-05-08 2009-11-12 Osram Opto Semiconductors Gmbh Motor vehicle headlight has semiconductor lasers as light source of motor vehicle headlight, and light modulator which modifies directional characteristic of light
US20110080753A1 (en) * 2008-05-28 2011-04-07 Osram Gesellschaft Mit Beschraenkter Haftung Vehicle lighting device with at least two semiconductor lamp elements
DE102010015125A1 (en) 2010-04-16 2011-10-20 Hella Kgaa Hueck & Co. Method for controlling a luminous flux of a lighting device with a number of semiconductor illuminants, which is set up for the identification and marking of traffic areas of airports
DE202011100791U1 (en) 2011-05-17 2012-08-24 Christian Braun Lamp with variable color light
DE102011080559A1 (en) 2011-08-05 2013-02-07 Bayerische Motoren Werke Aktiengesellschaft Illumination device for motor car, has deflection surface with micro mirrors adjustably arranged at pivotal axis independent of each other, where micro mirrors are externally excited and oscillated to achieve increased attenuation
WO2014121315A1 (en) * 2013-02-07 2014-08-14 Zizala Lichtsysteme Gmbh Headlight for a motor vehicle and method for distributing light

Also Published As

Publication number Publication date
EP3099529A1 (en) 2016-12-07
WO2015113583A1 (en) 2015-08-06

Similar Documents

Publication Publication Date Title
JP4485507B2 (en) System and method for generating white light
JP4122607B2 (en) Aviation sign lights
JP5512186B2 (en) Automotive lighting system
DE4228895C2 (en) Motor vehicle lighting device with multiple semiconductor light sources
US9677736B2 (en) Adaptive lighting system for an automobile vehicle
US9702519B2 (en) Headlight module
CN102224374B (en) Lighting device and method of generating output illumination
US9200780B2 (en) Light source for an automotive headlight with adaptive function
JP4881255B2 (en) Vehicle headlamp
US20130127340A1 (en) Motor vehicle light, motor vehicle and method for operating a motor vehicle light
JP5611941B2 (en) Vehicle lighting device comprising at least two semiconductor light emitting members
DE102008022795B4 (en) Motor vehicle headlight
US20080062706A1 (en) Systems, devices, components and methods for controllably configuring the brightness and color of light emitted by an automotive LED illumination system
EP2063170A2 (en) Illumination device for a vehicle
US20080055896A1 (en) Systems, devices, components and methods for controllably configuring the color of light emitted by an automotive LED illumination system
EP1500553B1 (en) Fixed cornering headlamp for motor vehicles
JP5577138B2 (en) Vehicle headlamp
EP2710644B1 (en) Optoelectronic semiconductor module and display having a plurality of such modules
EP2954256B1 (en) Headlight for a motor vehicle and method for distributing light
EP2178718A1 (en) System for generating a light beam in the area in front of a motor vehicle
AT514834B1 (en) Headlight for a motor vehicle and method for generating a light distribution
US20150377446A1 (en) Methods and Apparatus for Illumination with DMD and Laser Modulated Adaptive Beam Shaping
DE202004010950U1 (en) Headlight for a motor vehicle with a curved light display has light diode arrays in an arc with control of the operation and light intensity of different arrays
JP5987080B2 (en) Vehicle lighting device
EP2834554B1 (en) Illumination device for a motor vehicle

Legal Events

Date Code Title Description
R012 Request for examination validly filed
R016 Response to examination communication