WO2019170270A1 - Projecteur et procédé destiné à fabriquer un projecteur - Google Patents

Projecteur et procédé destiné à fabriquer un projecteur Download PDF

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Publication number
WO2019170270A1
WO2019170270A1 PCT/EP2018/083911 EP2018083911W WO2019170270A1 WO 2019170270 A1 WO2019170270 A1 WO 2019170270A1 EP 2018083911 W EP2018083911 W EP 2018083911W WO 2019170270 A1 WO2019170270 A1 WO 2019170270A1
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WO
WIPO (PCT)
Prior art keywords
light
light sources
lens
group
headlamp
Prior art date
Application number
PCT/EP2018/083911
Other languages
German (de)
English (en)
Inventor
Ralph Wirth
Mathieu RAYER
Vincent Grolier
Philipp Kreuter
Original Assignee
Osram Gmbh
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 Osram Gmbh filed Critical Osram Gmbh
Publication of WO2019170270A1 publication Critical patent/WO2019170270A1/fr

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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
    • F21S41/10—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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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

Definitions

  • the invention relates to a headlamp and method for manufacturing a headlamp.
  • Vehicle headlights have been characterized by a not insignificant depth.
  • the purely optical part of a headlamp usually has for the
  • the final diameter of the optics which is located downstream of a light source, is related to the size of the light source.
  • Classic incandescent filament of halogen lamps, arcs of high-pressure lamps and LED chip surfaces have a source size in the range of> 1 mm x 1 mm. In LED technologies, slightly smaller LEDs in the range 750 ym x 750 ym are used today.
  • the diameter of the optics downstream of a light source is approximately 20 times the diameter of the light source when a light source in the form of a Lambertian reflector faces a beam with a 5 ° opening angle should be displayed.
  • the downstream optics are usually called
  • Reflectors or designed as lens optics are Reflectors or designed as lens optics.
  • a standard LED for use in the headlight has, for example, a light-emitting surface of 1 mm x 4 mm, the LED is typically installed horizontally (long side of the LED along the horizontal in the headlight).
  • a 8 cm (20 x 4 mm) wide, downstream optics is necessary for a light of such a standard LED, which is to be imaged horizontally on a 5 ° beam.
  • the resulting depths are in similar dimensions as the exit aperture, ie about 8 cm. Due to the resulting large construction depth large space in the car interior is claimed by the headlights.
  • LARP laser activated remote phosphor
  • Dirt such as frost, moisture, dust near the exit aperture, e.g. on the cover of the headlamp, the risk of glare, since all the light, for example.
  • the low beam typically 800-2000 lm per headlamp exits from a correspondingly small optical aperture, for. 1 cm x 1 cm.
  • each light module implements one separate function such as position light, dipped beam, daytime running light, cornering light (eg turn signal or cornering light), etc.
  • Some of these modules have primary optics (directly on the light emitting module) or secondary optics (of which spaced light emitting module and not connected to this) on. Therefore, a plurality of different lighting modules are mounted on the front of the vehicle body. This can lead to the stability of the vehicle body being reduced due to the openings required by the depth of the headlights.
  • the individual for example, above, lighting functions on separate power supplies and control units, resulting in a complex system for the entire lighting functionality. Furthermore, the large number of different lighting modules leads to the
  • the object of the invention is the overall depth of
  • Vehicle headlights which allow multiple lighting functions are provided easier and / or with more degrees of freedom in the design.
  • a headlight having a plurality of light sources.
  • the light sources are arranged in a matrix arrangement.
  • a light source of the plurality of light sources has one or more light emitting diodes and one in the
  • the lens system has a support structure and at least a first lens and a second lens.
  • the first lens and the second lens are by means of the support structure in
  • the second lens is different from the first lens.
  • the light sources may be arranged regularly or irregularly in the matrix arrangement.
  • the first lens and the second lens are arranged relative to one another by means of the holding structure.
  • the second lens is usually different from the first lens.
  • the matrix arrangement of the plurality of light sources has a plurality of 100-1000 small light-emitting diodes in a sparse array.
  • the light emitting diodes have area coverage on a common substrate
  • a common circuit board of less than about 5%, for example, less than about 2.5%, for example, less than about 1%.
  • Light emitting diode has a base, for example
  • Light-emitting diodes to the light-emitting surface of the common substrate of the plurality of light-emitting diodes on which they are arranged, the area coverage.
  • the light-emitting surface of the common substrate is based for example on the shape and dimension of the common substrate, for example the shape and dimension of a
  • One area of a printed circuit board is for light-emitting diodes, for example
  • an integrated circuit (IC) or an IC chip is arranged in the inaccessible region, for example a driver circuit for the plurality of light-emitting diodes.
  • a portion of this plurality of light-emitting diodes for example, one or more groups each having the same light-emitting diodes is used to realize each of the individual lighting functions. For every lighting function can be any one or more groups each having the same light-emitting diodes. For every lighting function can be any one or more groups each having the same light-emitting diodes. For every lighting function can be any one or more groups each having the same light-emitting diodes. For every lighting function can be any lighting function.
  • the LEDs of the sparse matrix array are each at least one
  • each light source of the plurality of light sources is a light emitting module.
  • the headlamp For some functions of the headlamp, such as a turn signal function, optionally only one lens is required. In other words, in non-imaging optics systems, the second lens is optional. Imaging optics systems of the
  • Headlamps such as cornering, high beam, low beam, have at least the first lens and the second lens.
  • the headlight according to the principle of the so-called
  • the light source of a headlamp is divided into many small light sources, the each have their own imaging optics.
  • the individual light sources also referred to below as LED chips
  • the individual light sources are less than or equal to 200 ym x 200 ym, ideally in the range 50-150 um x 50-150 ym.
  • Lighting function on micro LED chips in which each chip or a group of chips is followed by a separate optics, the depth is reduced.
  • the optical design rule described above is the diameter of the optic 2 mm when using one or a group of 100 ym light emitting diodes.
  • Light emitting diodes have a similar efficiency over a wide range, regardless of their size. Accordingly, for example, the usual 4 mm 2 of the above-mentioned standard headlight LEDs are divided into 400 micro-LEDs. In a square arrangement results in this example, an optical module area of 4 cm x 4 cm. So in a similar one
  • the depth of the headlamp is according to
  • the size (volume) of the heat sink can be reduced.
  • a headlight according to various embodiments has a significantly reduced depth.
  • the lens system of the plurality of light sources for each lighting function or even within a
  • Lighting function be different. This allows multiple groups of light sources in the headlight
  • Lighting functions can be realized in a headlight is a single for the headlamp
  • the headlight has, in various embodiments, a light-emitting diode array with a first lens and a second lens to different
  • the first lens and the second lens are part of an optic, which may also be referred to as primary optics.
  • the distinction between primary and secondary optics is made, for example, when an LED chip-near optic (primary optic), e.g. used to create a pre-collimated image, and a more distant optics for all LED chips (secondary optics)
  • the headlamp is used.
  • the headlamp is free of secondary optics.
  • the headlamp according to various embodiments is a headlamp without secondary optics.
  • the different lighting functions are the same.
  • ADB adaptive driving beam
  • cornering light and / or turn signals for example cornering light and / or turn signals
  • Indicator position light and / or fog lights.
  • Lighting functions also be a brake light function integrated in the headlight. This additional
  • Pedestrians or other road users when looking at the headlight recognize whether the vehicle is in a braking operation.
  • the object is achieved according to a further aspect of the invention by a method for producing a headlight with a plurality of light sources. The method comprises the following steps: forming a plurality of
  • Light-emitting diodes on a substrate and disposing each of a first lens over a light emitting diode of the plurality
  • Light sources Detecting respectively an optical property of the beam emitted from each of the light emitting diodes by the respective first lens, selections respectively of a second lens and their arrangement over the respective first lens based on the difference of the detected optical property to a predetermined characteristic of the respective one Light source with the respective first lens and light emitting diode; and disposing each of the selected second lenses over the respective first lens, thereby forming one light source of the plurality of light sources, respectively.
  • the first and / or second lenses can be produced, for example, by additive manufacturing techniques and are distinguished by the fact that, because of the adapted optics, they function solely for a specific light module and in the detail of their execution of other optics of the same series.
  • the formation of the first and / or second lenses are based on a stamping technology.
  • Figure 1 is a schematic sectional view of a
  • Figure 2 is a schematic sectional view of a
  • Figure 3 is a schematic sectional view of a
  • Figure 4 is a schematic sectional view of a
  • Figure 5 is a schematic sectional view of a
  • Figure 6 is a schematic sectional view of a
  • Figure 7 is a schematic plan view of a headlight according to various embodiments.
  • Figure 8 is a schematic plan view of a headlight according to various embodiments.
  • Figure 9 is a schematic plan view of a headlight according to various embodiments.
  • Figure 10 is a schematic plan view of a headlamp according to various embodiments.
  • FIG. 11 shows a flow diagram of a method for producing a headlight according to various exemplary embodiments.
  • a light source can have one or more light-emitting diodes.
  • a light source with a single light emitting diode may also act as a light emitting diode
  • a light source may be configured as a so-called submount package.
  • a light-emitting diode which provides electromagnetic radiation, as a
  • the electromagnetic radiation may, for example, be light in the visible range, UV light and / or infrared light.
  • the light emitting diode may be part of an integrated circuit in various embodiments. Furthermore, the plurality of light emitting diodes and light sources on a common substrate and in a common
  • Housing be housed.
  • a light emitting diode may comprise a semiconductor chip providing electromagnetic radiation (leaded LED, SMD) or may be configured as a semiconductor chip providing electromagnetic radiation (chip-on-board).
  • the semiconductor chip may be a packaging
  • Packaging may be formed, for example, as an encapsulation, optical lens and / or as a converter element.
  • a wired LED can be a semiconductor chip
  • provide electromagnetic radiation can be understood as an LED chip.
  • the semiconductor chip can, for example, with a
  • the plastic cap can protect the LED chip from external, harmful influences, for example oxygen and / or water, during manufacture and during operation.
  • An overlying light emitting diode may have an LED chip in a housing.
  • the housing can be with a substrate be conclusively fixed, for example, non-positively, positively or materially.
  • a chip-on-board light-emitting diode can have an LED chip which is fixed on a substrate, wherein the LED chip can have neither a housing nor contact pads.
  • optical components such as
  • Lenses or reflectors using the example of the first, second and possibly, further lens illustrated could alternatively also a corresponding reflector for
  • Beam forming can be used.
  • the lens system of the light sources only lenses as beam-shaping, optical elements. That is, in at least one
  • the first lens is an optical lens and the second lens is an optical lens that is not identical and not equal to the first lens.
  • the lens system also has at least one beam-shaping component instead of or in addition to the first, second and / or further lens which is not a lens, for example a reflector, a scattering layer or a well-conducting or translucent cover. It is understood that the generally designated first or second or further lens application-specific, a converging lens, diverging lens, Fresnel lens,
  • Cylindrical lens astigmatic lens or other
  • common lens to shape the beam may be.
  • FIG. 1 shows a schematic sectional view of a
  • the headlight 100 has on or above a substrate 102 at least a first light source 104 and a second one
  • Light source 106 on.
  • the light sources 104, 106 may be configured to emit light into different ones Emit main directions (illustrated in FIG 1 by the arrows 130, 140).
  • the light sources 104, 106 have different characteristics
  • Embodiments each have one or more light-emitting diodes 108, 110 and a lens system.
  • the lens system of the light sources 104, 106 has at least one first lens 114, 118 and a second lens 116, 120, respectively.
  • the first lens 114, 118 and the second lens 116, 120 are above the
  • the holding structure 112 is set up such that an air gap 126 is formed between the light-emitting diode 108, 110 and the first lens 114, 118.
  • the support structure 112 is further configured such that between the first lens 114, 118 and the second lens 116, 120, a further air gap 128 is formed.
  • the light-emitting diodes of the light sources of the plurality of light sources are configured, for example, as light-emitting chips, for example as LED chips.
  • the chips 122 have a
  • the light-emitting surface 124 which are aligned in the direction of the first lens.
  • Substrate 102 is mounted and then their position
  • the corresponding first and / or second lens can then be mounted per chip. These can be prefabricated lenses. If an adjustment according to the present misalignment is too expensive, the first and / or second lens can be set quickly. After a further measurement of the first lens, additive techniques can be used by which the optical
  • a headlight 100 has a plurality of light sources 104, 106.
  • the light sources 104, 106 are arranged in a matrix arrangement.
  • a light source 104, 106 of the plurality of light sources 104, 106 has in each case one light-emitting diode 108, 110 and one in the beam path of the light-emitting diode 108, 110
  • the lens system has a support structure 112 and at least a first lens 114, 118 and a second lens 116, 120.
  • the first lens 114, 118 and the second lens 116, 120 are by means of the support structure 112 in the beam path 130, 140 of the light-emitting diode 108, 110th
  • the second lens 116, 120 is different from the first lens 114, 118.
  • the light-emitting diodes 108, 110 of the plurality of light sources 104, 106 are arranged in a sparse matrix arrangement.
  • the sparsely populated array may also be referred to as a sparse array.
  • Embodiments are the light emitting diodes 108, 110 of the plurality of light sources 104, 106 on a common
  • Substrate 102 is arranged.
  • the headlight 100 with the sparse matrix arrangement of the light-emitting diodes 108, 110 of the plurality of light sources 104, 106 has, for example, the advantage that due to the sparse arrangement, the heat propagation in the
  • Lighting system for example with respect to
  • a secondary optic which is not connected to the light-emitting diodes 108, 110 is not absolutely necessary.
  • the second lens 116, 120 is, for example, an adaptive lens for the first lenses 114, 118 with respect to one
  • a part of the second lenses of the plurality of light sources 104, 106 are each as adaptive lenses for the first lenses with respect to a
  • each of the second lenses 116, 120 as adaptive lenses for the first lenses 114, 118, with respect to a predetermined illumination function of
  • the first lens 114, 118 is spaced from the light emitting diode 108, 110 by means of an air gap 126.
  • the first lens 114, 118 is spaced from the second lens 116, 120 by means of an air gap 128.
  • the first lens 114, 118 and the second lens 116, 120 are arranged successively following the light-emitting diode 108, 110, for example stacked one above the other.
  • the light emitting diode 108 of the first light source 104 is the same as the light emitting diode 110 of the second light source 106.
  • the light emitting diodes 108, 110 of the light sources 104, 106 may be different from each other, as described in more detail below.
  • the first lens 114 of the first light source 104 is equal to the first lens 118 of the second light source 106.
  • the first Lenses 114, 118 of the light sources 104, 106 to each other
  • the second lens 114 of the second light source 104 is equal to the second lens 118 of the second light source 106.
  • the second lenses 114, 118 of the light sources 104, 106 may be mutually aligned
  • the lens system of at least one light source of the plurality of light sources 104, 106 or the plurality of light sources 104, 106 is arranged such that the holding structure 112 of the lens system of the light source 108, 110 is arranged adjacent to the light emitting diode 108, 110 or not touched or contacted.
  • Holding structure 112 a first part and a second part, wherein the first part for holding the first lens above the light emitting diode 108, 110, is arranged and the second part is arranged to hold the second lens above the first lens.
  • the second part of the support structure 112 is attached to the first part of the support structure 112.
  • the support structure has at least a first part and a second part.
  • the first part of the support structure 112 is arranged to arrange the first lens 114, 118 of the light source 104, 106 above the light emitting diode 108, 110.
  • the second part of the support structure 112 is configured to dispose the second lens 116, 120 of the light source 104, 106 over the first lens 114, 118.
  • the first part and the second part of the support structure 112 may be interconnected
  • the support structure 112 may be formed of several parts, which are interconnected or arranged side by side.
  • the substrate 102 is configured as a printed circuit board (PCB), for example, as a flexible printed circuit board (flex PCB).
  • PCB printed circuit board
  • flex PCB flexible printed circuit board
  • Light emitting diodes 108, 110 of the light sources 104, 106 each set up as a Lambert 's emitter.
  • the headlamp may include one or more light-blocking areas, for example, opaque areas around which
  • the first lens and / or the second lens is / are made of a plastic
  • PC polycarbonate
  • Polysiloxane (silicone, for example PMMS or PDMS) or a polyacrylate (for example PMMA).
  • FIG. 2 shows a schematic sectional illustration of a headlight according to various exemplary embodiments.
  • the headlamp 100 described above in various embodiments, further includes a translucent cover 202 spaced above the lens system 104, 106 lens system.
  • the cover 202 is not part of the various embodiments
  • Lensensystems the light sources 104, 106.
  • lenses with a dimension of for example 2 mm only a few lumens per light source are emitted.
  • Headlight 1000 lm so that 400 pieces of light emitting diodes each LED 2, 5 lm are emitted. Thus, it can not come to a glare at contamination of the cover 202.
  • Headlight 1000 lm so that 400 pieces of light emitting diodes each LED 2, 5 lm are emitted. Thus, it can not come to a glare at contamination of the cover 202.
  • the headlight 100 further comprises a translucent cover 202, also referred to as
  • the cover 202 is arranged in the beam path 130, 140 of the light sources 104, 106.
  • the cover 202 is at a distance above the lens system of the light sources 104, 106 of the plurality of light sources 104,
  • the light emitting diode is at least one light source 104, 106 as a
  • SMD 204, 206 surface mounted device
  • SMD LEDs 204, 206 formed.
  • the light-emitting diode 108, 110 is set up as an already prefabricated SMD component 204, 206. This has the advantage that the placement in the headlight according to the size of the light emitting diode SMD components 204, 206 is easier. Furthermore, the larger light emitting diode SMD components 204, 206 allow easier contacting. Furthermore, the light-emitting diode SMD components 204, 206 before, after and during a soldering of the
  • Light emitting diode SMD components 204, 206 stable properties.
  • FIG. 3 shows a schematic sectional view of a
  • Headlamps according to various embodiments.
  • the lens system may be mounted directly on the light emitting diode SMD component 204, 206 in various embodiments. In other words: in different
  • Embodiments is the lens system of at least one light source of the plurality of light sources 104, 106 and the
  • the lens system in each case arranged directly on the light-emitting diode, for example connected to it and / or attached thereto.
  • the support structure 112 of the lens system is attached to and / or connected to the light emitting diode 108, 110.
  • FIG. 4 shows a schematic sectional view of a
  • Headlamps according to various embodiments.
  • the lens systems of the plurality of light sources in various embodiments may be arranged as a contiguous optical disk over the substrate 102, which may also be referred to as a light-emitting diode panel, with light-emitting diodes 108/204, 110/206.
  • the optical disk is, for example, a microlens array having the first lenses.
  • the microlens array can also have the second lenses.
  • Optical plate be a rigid for each light source and / or for each headlight identical look. This makes it possible to use prefabricated optical plates which have been adapted by additive manufacturing processes using the second lenses or have been completely manufactured by the same.
  • Subordinate optics can either represent the entire field of light, eg low beam with light / dark edge, or illuminates only parts of the light field. In the latter case, it is also possible to realize adaptive drive beam (ADB) functionalities.
  • ADB adaptive drive beam
  • a control unit is required (see, for example, FIG. 7), which is set up to control the individual light-emitting diodes separately.
  • the first lenses 114, 118 of the light sources 104, 106 may be formed in one piece, for example as a microlens array.
  • the second lenses 116, 120 of the light sources 104, 106 may be formed in one piece,
  • the headlight 100 has a light-emitting diode matrix over which a first microlens array with first lenses 114, 118 of the
  • Light sources 104, 106 is arranged.
  • the first lenses 114, 118 may be connected to each other by means of the support structure 112 or a part 404, for example a connecting web, of the support structure 112.
  • the second lenses 116, 120 may be arranged, for example as a further, second microlens array.
  • the second lenses 116, 120 or further lenses as described in more detail below, as individual lenses, for example as
  • Light sources 104, 106 with respect to a predetermined
  • openings 402 may be provided in the substrate 102 into which the support structure 112 may engage to place the lenses 114, 116, 118, 120 of the light sources 104, 106 over the light emitting diodes 108/204, 110/206.
  • the holding structure 112 is connected, for example fixed, by means of the openings 402 in a form-fitting, materially bonded and / or non-positively connected manner to the substrate 102.
  • the headlight 100 is adjacent to the first light source 104 and the second
  • Light source 106 further light sources, that is, a plurality of light sources, as shown in FIG. 4 is illustrated in the edge regions of the first and second light sources 104, 106 is. The variety of light sources is still in the
  • the headlight has an LED array or an LED matrix. On or above the LED array can be one or more
  • Microlens array (micro lense array), for example
  • microlens arrays may be stacked and / or juxtaposed, for example, groups having different ones
  • Light sources 104, 106 set up as a microlens array.
  • Light sources 104, 106 and a portion 404 of the support structure 112 may be formed of a (first) piece.
  • a plurality of the second lenses 116, 120 of the plurality of light sources 104, 106 are as one
  • Microlens array is set up.
  • Light sources 104, 106 and a portion 404 of the support structure 112 may be formed of a (second) piece.
  • the first piece and the second piece of the lens system of the plurality of light sources 104, 106 may be connected to each other, for example, positively, non-positively or
  • first piece and the second piece of the lens system are a common piece formed or formed from a common piece, for example by means of a molding or stamping process.
  • FIG. 5 shows a schematic sectional view of a
  • Headlamps according to various embodiments, for example, one illustrated above and / or
  • a plurality of light sources on a common substrate 102 is arranged or formed.
  • the plurality of light sources can at least a first
  • the substrate 102 may be constructed as described above
  • the lens system of the at least one light source of the first group 520 comprises at least a first lens 506, a second lens 508, and a third lens 510.
  • the lens system may have more than two lenses, for example, three or more lenses.
  • the lenses of the lens system of the first and second groups 520, 530 may be designed according to one of the above-described
  • the at least one light source of the first group 520 has a first light-emitting diode 502 and the at least one light source of the second
  • Group 530 has a second light emitting diode 504 which
  • the second light-emitting diode 504 a For example, the second light-emitting diode 504 a
  • Converter material 514 in the beam path of the light emitting diode for example, a phosphor or a phosphor.
  • the light emitting diodes of the first and second groups 520, 530 may be according to an embodiment described above
  • a lens of the lens system may additionally be configured as a color filter 512, as shown in FIG. 6 is illustrated.
  • the different light colors required for the different illumination functions of a headlight 100 can be converted directly to the light-emitting diode 504 by means of wavelength conversion
  • one of the first lens and the second lens is respectively for the
  • Light sources 104, 106 of the second group 530 equal.
  • Vehicle headlight 100 the first group of
  • light sources 520 are set up as dipped beam and the second group of light sources 530 are configured as turn signals or flashing lights.
  • the plurality of light sources 104, 106 include a first group 520 of light sources 104, 106 and a second group 530 of light sources 104, 106.
  • the first group 520 of light sources 104, 106 is set up such that a first illumination function can be realized, for example high beam.
  • Light sources 104, 106 is arranged such that a second illumination function, which is different from the first illumination functions, can be realized,
  • Lighting functions of the first or second group to be an above lighting function.
  • the headlamp 100 includes a first group 520, 530 of light sources 104, 106 of the plurality of light sources 104, 106.
  • the light sources of the first group 520, 530 are arranged to be one
  • the headlight 100 further comprises a second group of light sources of the plurality of light sources 104, 106.
  • the illumination function or display function is respectively determined by means of the light emitted by the light sources of the first or second group 520, 530,
  • the light sources of the first and second groups can be any light sources of the first and second groups.
  • the light sources of the second group are controlled such that by means of the emitted
  • Light of the light sources of the second group at least a predetermined information is displayed.
  • the given information is for example a logo, an image, a
  • the headlamp may therefore further comprise a plurality of light sources or light emitting diodes, which are arranged between the light sources or light emitting diodes for the
  • Lighting function are arranged. This can be a
  • the light sources of the plurality of light sources may be one
  • the same or different light sources or LEDs of Light sources are controlled.
  • light sources or light-emitting diodes may be provided in the headlight, which are only activated in the first operating mode or which are only activated in the second operating mode.
  • the intensity of the light of the display function can be much lower than the intensity of the light of the illumination function.
  • Light emitting diodes or light sources of the display function therefore contribute not or not essential to the lighting function.
  • the LEDs are in the first
  • light-emitting diodes can be provided which are activated in the first operating mode and in the second operating mode and emit light in each case.
  • the control for example, the operating current or the operating voltage may be different from each other in the first and second operating modes.
  • these light-emitting diodes can be driven in dimming, for example pulse modulated (eg pulse amplitude modulation (PAM), pulse width modulation (PWM), pulse frequency modulation (PFM), with a lower operating current and / or with a lower operating voltage.
  • pulse modulated eg pulse amplitude modulation (PAM), pulse width modulation (PWM), pulse frequency modulation (PFM)
  • PAM pulse amplitude modulation
  • PWM pulse width modulation
  • PFM pulse frequency modulation
  • a headlamp such as a vehicle headlamp
  • the headlamp can also be arranged to be simultaneous or exclusive in the first and second
  • Operating mode can be operated.
  • light sources operating in the second mode of operation may be a kind of luminous mat or luminous enclosure for light sources operating in the first mode of operation will be operated. This causes an optical contrast between the luminous area and the non-luminous area (of the headlamp) to be reduced.
  • the headlight 100 has a first group 520 of FIG.
  • the light sources of the first group are set up to realize at least a first illumination function and / or a second illumination function.
  • Lighting function is different from the first lighting function.
  • At least one light source 104, 106 of the first group is part of a second group of
  • the light sources of the second group are set up to realize a display function.
  • the illumination function or display function is realized in each case by means of the light emitted by the light sources of the first or second group 520, 530.
  • the headlight 100 is thus a display, for example for displaying a
  • the headlamp is operated by means of appropriate control essentially as lighting, such as a headlight, spotlight, or similar.
  • Lighting functions in a vehicle headlight are, for example, a dipped beam, daytime running lights, cornering lights, cornering lights, brake lights, fog lights, adaptive headlights, high beam, etc ..
  • Display device operated to display image data, video data or optical design elements (display function), for example as a display for displaying logos,
  • the light sources of the second group are arranged between light sources of the first group.
  • the light sources or light-emitting diodes of the first operating mode and the light sources or light-emitting diodes of the second operating mode can be spatially interposed or interleaved, for example similar to one another
  • At least some of the light sources of the second group differ from the light sources of the first group (illumination function) in at least one of the following
  • Characteristic a larger number of light-emitting diodes, a greater number density of light-emitting diodes and / or a simpler lens system, preferably no lens or only one lens.
  • the light sources of the first group may each have a number of light-emitting diodes in a range of 1 to 3
  • the light sources of the second group may each have a number of light-emitting diodes in a range of 1 to 10, for example in a range of 3 to 10.
  • Some of the light sources of the first group may also be light sources of the second group.
  • the substrate of the light sources of the first group may have the same or essentially the same form factor as that of the substrate of the light sources of the second group (display function).
  • the light sources of the first group may have the same or essentially the same form factor as that of the substrate of the light sources of the second group (display function).
  • Lighting function and the second group (display function), for example, on a common
  • Substrate be arranged.
  • the plurality of light sources may include a third group of light sources adjacent to the first group of light sources
  • the light sources surround the third group the plurality of light sources of the first
  • the third group may be arranged at a distance next to the first group.
  • the distance may be, for example, in a range of a few centimeters to two meters.
  • the light sources of the third group can be controlled by the same control unit as the
  • Light sources of the first and / or second group are Light sources of the first and / or second group.
  • the light sources of the third group may be arranged according to an embodiment of the light sources of the second group.
  • FIG. 7 shows a schematic plan view of one
  • Headlamps according to various embodiments, for example, an illustrated above and / or
  • Light sources can according to one described above
  • the headlamp 100 further includes a controller 702 and a power controller 704 that are connected to the plurality of light sources 706 on the substrate 102 to drive them.
  • Light emitting diodes or the groups of light emitting diodes of the plurality of light sources can each be individually controlled by means of the control unit 702 and the energy control 704.
  • the headlight further comprises a control unit 702, which is set up in such a way that the plurality of light sources 104, 106 are activated in order to display predetermined information, in particular a logo or symbol, by means of the light emitted by the light sources 104, 106 ,
  • the plurality of light sources may include a plurality or a plurality of groups of
  • a group of light sources 808 is for
  • a further set of light sources 802 is configured as a turn signal, another group of light sources 804 is set up as a daytime running light, and another group of light sources 706 is configured as a dipped beam.
  • the groups of light sources 706, 802, 804, 808 have light-emitting diodes and lens systems configured according to their lighting function.
  • the light sources of the groups of light sources may each be arranged in a contiguous region
  • the light sources of the groups of light sources or a part thereof may be distributed or spaced on the substrate 102
  • the arrangement of the LEDs 706, 802, 804, 808 can be arbitrary. This allows an almost limitless Design freedom for the appearance of the headlamp 100, as illustrated in FIG.9.
  • any lighting functions can be arbitrary or
  • Display function is very homogeneous, since the areas with different lighting functions or display function are indistinguishable when the headlamp is off, for example, in the case that colored light by means of wavelength conversion on the
  • Headlamps are used for information presentation, for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed, emitted light. Such information can be used for information presentation, for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed, emitted light. Such information can be used for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed, emitted light. Such information can be used for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed, emitted light. Such information can be used for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed, emitted light. Such information can be used for example, to represent the individual lighting functions, animations, company logos, brands or other characters, for example by means of a dimmed
  • a tail lamp for example, a group of light sources 802, which are used as turn signals or
  • Flashing lights are set up, and a group of
  • Light sources 1002 which are set up as a brake light or brake light on.
  • FIG. 11 shows a flowchart of a method for
  • the individual components of the headlamp which is formed by means of the method, can be set up in accordance with embodiments described above.
  • Light sources 104, 106 comprises forming S1 of a plurality of light-emitting diodes on a substrate.
  • the method 1100 further comprises arranging S2 each of a first lens over a light emitting diode of the plurality of light emitting diodes.
  • the method 1100 includes detecting S3 each of an optical property of the beam emitted respectively from the LEDs by the respective first lens.
  • the detected optical property is
  • Luminous intensity distribution body Color locus of the light which can be emitted by the first lenses from the light-emitting diodes.
  • the method 1100 includes selecting S4 each of a second lens and arranging it over the respective first lens based on the difference of the detected optical property to a predetermined characteristic of the respective light source with the respective first lens and light emitting diode.
  • the second lens may be additive and / or adaptive to the first lens relative to a first lens
  • the selection of the arrangement includes, for example, the positioning or Alignment of the optical axis of the second lens with respect to the first lens.
  • the method 1100 has a corresponding one
  • the first lens prior to arranging S2 the first lens has the method on or above the first lens
  • Another / first optical property is for example the color locus, the light intensity or the
  • the method 1100 then includes selecting a respective first lens and arranging it over the respective light emitting diode based on the difference of the detected optical property to a predetermined one
  • the method then additionally has a corresponding arrangement of the respectively selected first lens above the respective light-emitting diode, whereby the first lens is arranged (S2).
  • the method comprises: detecting at least one further optical property of the radiation beam, the respective light source of the plurality of light sources;
  • Embodiment 1 has a headlamp 100 comprising: a plurality of light sources 104, 106 arranged in a matrix arrangement, and wherein one
  • Light source 104, 106 of the plurality of light sources 104, 106 each one or more light emitting diode (s) 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 and one in the beam path of the light emitting diode (s) 108th , 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002, the lens system having a support structure 112 and at least one first lens 114, 118, 506 and a second lens 116, 120, 508 , wherein the first lens 114, 118, 506 and the second lens 116, 120, 508 by means of the support structure 112 in
  • Light emitting diode (s) 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 are arranged and spaced from each other, and wherein the second lens 116, 120, 508 of the first lens 114 , 118, 506 differs.
  • the headlight 100 according to Embodiment 1 optionally has the light emitting diodes 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 of the plurality of light sources 104, 106 in a sparse one
  • the sparse matrix array may also be referred to as a sparse array.
  • the headlamp 100 according to Embodiment 1 or 2 optionally includes that
  • the headlight 100 optionally has the first lens 114, 118, 506 being separated from the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804 by means of an air gap 126 , 808, 1002 is spaced.
  • the headlight 100 according to any one of Embodiments 1 to 4 optionally includes the first lens 114, 118, 506 being spaced from the second lens 116, 120, 508 by an air gap 128.
  • the headlight 100 optionally has the first lens 114, 118, 506 and the second lens 116, 120, 508 above the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 are sequentially arranged.
  • the headlamp 100 optionally has the holding structure 112 of the lens system connected to the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 and / or or attached.
  • the headlamp 100 according to any one of Embodiments 1 to 7 optionally includes a plurality of the first lenses 114, 118, 506 of the plurality of light sources 104, 106 as a microlens array
  • the support structure 112 may be formed in one piece.
  • the headlamp 100 optionally includes a plurality of the second lenses 116, 120, 508 of the plurality of light sources 104, 106 as a microlens array is set up.
  • the support structure 112 may be formed in one piece.
  • the headlamp 100 according to any one of Embodiments 1 to 9 optionally includes the second lens 116, 120, 508 as an adaptive lens for the first lenses 114, 118, 506 with respect to a predetermined one
  • Illumination function of the light source 104, 106 is set up.
  • a part of the second lenses of the plurality of light sources 104, 106 are respectively arranged as adaptive lenses for the first lenses with respect to a predetermined illumination function of the respective light source.
  • each of the second lenses 116, 120, 508 as an adaptive lens for the first lenses 114, 118, 506 with respect to a predetermined illumination function of
  • the headlamp 100 optionally further comprises: a translucent cover 202 which is arranged in the beam path 130, 140 of the light sources 104, 106, wherein the cover 202 at a distance above the lens system of the light sources 104 , 106 of the plurality of light sources 104, 106.
  • the headlight 100 according to any one of Embodiments 1 to 11 further optionally includes: a first group 520 of light sources 104, 106 of the plurality of light sources 104, 106 configured to realize a first illumination function by the light is emitted from the light sources of the first group 520 and a second group 530 of light sources 104, 106 of the plurality of light sources 104, 106, which are adapted to a second illumination function, which is different from that The first lighting function is to realize by means of the light emitted from the light sources of the second group 530.
  • the headlamp 100 according to Embodiment 12 optionally includes one of the first lens and the second lens for the light sources 104, 106 of the first group 520 and the light sources 104, 106 of the second group 530, respectively.
  • the headlight 100 according to one of the exemplary embodiments 1 to 13 further optionally comprises: a control unit 702, which is set up in such a way that the plurality of light sources 104, 106 are driven by predetermined information, in particular a logo or symbol of the light emitted by the light sources 104, 106.
  • a control unit 702 which is set up in such a way that the plurality of light sources 104, 106 are driven by predetermined information, in particular a logo or symbol of the light emitted by the light sources 104, 106.
  • the holding structure 112 optionally has a first part and a second part, the first part for holding the first lens above the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 and the second part is arranged to hold the second lens above the first lens.
  • the holding structure yields
  • Embodiment 15 optionally includes that the second part of the support structure 112 is attached to the first part of the support structure 112.
  • Embodiment 17 is a method 1100 of manufacturing a headlamp 100 having a plurality of light sources 104, 106.
  • the method 1100 comprising the steps of: forming S1 a plurality of light emitting diodes 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 on a substrate 102; and disposing each S2 of a first lens over a light emitting diode of the plurality of light sources; Detecting S3 each of an optical property of the beam, each from the light-emitting diodes 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 is emitted by the respective first lens 114, 118, 506, selections S4 each of a second lens and their arrangement over the respective first one Lens based on the difference of the detected optical property to a predetermined characteristic of the respective light source 104, 106 with the respective first lens and light emitting diode 108, 110, 204, 206,
  • Embodiment 17 optionally following steps:
  • each selected further lens 510 above the respective light source, whereby a respective light source 104, 106 is formed with another lens 510 of the plurality of light sources 104, 106.
  • the method according to one of the exemplary embodiments 17 or 18 optionally comprises that
  • sparse matrix arrangement can also be referred to as sparse array.
  • the method according to one of the exemplary embodiments 17 to 19 optionally comprises that
  • Light-emitting diodes 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 of the plurality of light sources 104, 106 are arranged on a common substrate 102.
  • the method according to one of the exemplary embodiments 17 to 20 optionally has the first lens 114, 118, 506 being separated from the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804 by means of an air gap 126, 808, 1002 is spaced.
  • the method according to any one of embodiments 17 to 21 optionally includes disposing the first lens 114, 118, 506 by means of an air gap 128 from the second lens 116, 120, 508.
  • the method according to one of the exemplary embodiments 17 to 22 optionally has the first lens 114, 118, 506 and the second lens 116, 120, 508 above the light-emitting diode 108, 110, 204, 206, 502, 504, 706 , 802, 804, 808, 1002 are sequentially arranged.
  • the method according to one of the exemplary embodiments 17 to 23 optionally comprises that
  • the method according to one of the exemplary embodiments 17 to 24 optionally comprises a
  • a plurality of the first lenses 114, 118, 506 of the plurality of light sources 104, 106 is set up as a microlens array.
  • the support structure 112 may be formed in one piece.
  • the method according to one of the exemplary embodiments 17 to 25 optionally comprises a Variety of second lenses 116, 120, 508 of the plurality of light sources 104, 106 is set up as a microlens array.
  • the support structure 112 may be formed in one piece.
  • the method according to one of the exemplary embodiments 17 to 26 optionally has the second lens 116, 120, 508 as an adaptive lens for the first lenses 114, 118, 506 with respect to a predetermined one
  • Illumination function of the light source 104, 106 is established.
  • a part of the second lenses of the plurality of light sources 104, 106 are respectively set as adaptive lenses for the first lenses with respect to a predetermined illumination function of the respective light source.
  • the method according to one of the exemplary embodiments 17 to 27 further optionally comprises: a transparent cover 202, which is arranged in the beam path 130, 140 of the light sources 104, 106, wherein the
  • Cover 202 at a distance above the lens system of the light sources 104, 106 of the plurality of light sources 104, 106 is arranged.
  • the method according to any one of Embodiments 17 to 28 further optionally includes: a first group 520 of light sources 104, 106 of the plurality of light sources 104, 106 arranged to realize a first illumination function and a second group 530 of FIG Light sources 104, 106 of the plurality of light sources 104, 106, which are set to a second To realize lighting function that is different from the first lighting functions.
  • Embodiment 29 optionally, that one of the first lens and the second lens respectively for the light sources 104, 106 of the first group 520 and the light sources 104, 106 of the second group 530 are formed the same.
  • the method further optionally includes connecting a control unit 702 which is set up in such a way that the plurality of light sources 104, 106 are driven by predetermined information, in particular a logo or symbol of the light emitted from the light sources 104, 106, with the plurality of light sources 104, 106.
  • the method of any one of Embodiments 17 to 31 further includes arranging the first lens and the second lens in a holding structure.
  • the holding structure 112 optionally has a first part and a second part, the first part for holding the first lens above the light-emitting diode 108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002 is arranged and the second part is arranged to hold the second lens above the first lens.
  • the holding structure yields
  • Embodiment 33 optionally on that the second part of the support structure 112 is attached to the first part of the support structure 112.
  • the headlamp 100 according to any one of Embodiments 1 to 16 further includes a first group 520, 530 of light sources 104, 106 of the plurality Light sources 104, 106 adapted to realize an illumination function by means of the light emitted from the light sources of the first group 520, 530 and a second group of light sources of the plurality of light sources 104, 106 which are arranged, to realize a display function by means of the light emitted from the light sources of the second group.
  • the headlight 100 according to exemplary embodiment 35 has at least some of the
  • Light sources of the second group are arranged between light sources of the first group, and wherein at least some of the light sources of the second group are different from the light sources of the first group in at least one property
  • Light-emitting diodes a greater number density of light emitting diodes and / or a simpler lens system, preferably no or only one lens.
  • the headlamp 100 according to any one of Embodiments 1 to 16 and 35 to 36 has a first group 520 of light sources 104, 106 of the plurality of light sources 104, 106 arranged to be
  • Light source 104, 106 of the first group is part of a second group of light sources, which are adapted to realize a display function by means of the light emitted from the light sources of the second group.
  • Embodiment 38 is a method for operating a headlamp 100 having an illumination function and a display function according to one of the embodiments 35 to 37, wherein in a first operating mode, the light sources of the first group are controlled such that by means of the emitted light of the light sources of the first group at least one illumination function is realized, and in a second operating mode, the light sources of the second group are controlled in such a way that by means of the
  • emitted light of the light sources of the second group is displayed at least one predetermined information, preferably a logo, a picture, a state information and / or a symbol.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Selon différents exemples de réalisations, l'invention concerne un projecteur (100), comportant : une pluralité de sources de lumière (104, 106) qui sont agencées en un agencement de matrice, et une source de lumière (104, 106) de la pluralité de sources de lumière (104, 106) comportant chacune une diode électroluminescente (108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002) et un système de lentilles agencé dans le chemin de rayonnement de la diode électroluminescente (108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002), le système de lentilles comportant une structure porteuse (112) et au moins une première lentille (114, 118, 506) et une deuxième lentille (116, 120, 508), la première lentille (114, 118, 506) et la deuxième lentille (116, 120, 508) étant agencées au moyen de la structure porteuse (112) dans le chemin de rayonnement de la diode électroluminescente (108, 110, 204, 206, 502, 504, 706, 802, 804, 808, 1002) et étant espacées l'une par rapport à l'autre, et la deuxième lentille (116, 120, 508) étant différente de la première lentille (114, 118, 506).
PCT/EP2018/083911 2018-03-08 2018-12-07 Projecteur et procédé destiné à fabriquer un projecteur WO2019170270A1 (fr)

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DE102018203497.4A DE102018203497A1 (de) 2018-03-08 2018-03-08 Scheinwerfer und verfahren zum herstellen eines scheinwerfers

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DE102020130540A1 (de) 2020-11-19 2022-05-19 Marelli Automotive Lighting Reutlingen (Germany) GmbH Projektionsmodul, Scheinwerfer, Kraftfahrzeug
FR3119663B1 (fr) * 2021-02-09 2023-05-19 Valeo Vision Source lumineuse pour la signalisation d’un véhicule automobile
FR3119662B1 (fr) * 2021-02-09 2023-01-20 Valeo Vision Source lumineuse pour la signalisation d’un véhicule automobile
FR3119664B1 (fr) * 2021-02-09 2023-01-20 Valeo Vision Source lumineuse pour la signalisation d’un véhicule automobile
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