EP3396241B1 - Leuchtmodul mit optimierter bildanzeigeoptik für einen verpixelten räumlichen lichtmodulator, der für ein kraftfahrzeug bestimmt ist - Google Patents

Leuchtmodul mit optimierter bildanzeigeoptik für einen verpixelten räumlichen lichtmodulator, der für ein kraftfahrzeug bestimmt ist Download PDF

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Publication number
EP3396241B1
EP3396241B1 EP18168421.8A EP18168421A EP3396241B1 EP 3396241 B1 EP3396241 B1 EP 3396241B1 EP 18168421 A EP18168421 A EP 18168421A EP 3396241 B1 EP3396241 B1 EP 3396241B1
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Prior art keywords
light
high definition
reflection
optical
imaging system
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English (en)
French (fr)
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EP3396241A1 (de
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Pierre Albou
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Valeo Vision SAS
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Valeo Vision SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/10—Position lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/15—Side marker lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the present invention relates to lighting for vehicles, in particular towards the front or towards the rear.
  • the invention relates more precisely, in the automotive field, to a light module provided with a pixelated spatial modulator, for example in the form of a micro-mirror matrix (or DMD from English "Digital Micromirror Device") whose micro-mirrors are controllable.
  • a pixelated spatial modulator for example in the form of a micro-mirror matrix (or DMD from English "Digital Micromirror Device") whose micro-mirrors are controllable.
  • a lighting device for a motor vehicle comprising a light source, a matrix of micro-mirrors or similar modulator device making it possible to decompose a light beam into pixels distributed along two dimensions.
  • the micro-mirror matrix is generally used to reflect the light rays coming from the light source towards an optic for shaping the light beam, intended to project the figure formed on the micro-mirror matrix, in the form of an outgoing beam of light.
  • This light beam makes it possible, for example, to illuminate the lane on which the motor vehicle comprising this lighting device is traveling, or fulfills a signaling function.
  • Projection lighting using a micro-mirror array or similar pixelated spatial modulator offers the ability to provide bright, adaptive lighting solutions for many applications.
  • DBL Dynamic Bending Light
  • the matrix grouping the micro-mirror devices decomposes the outgoing beam into pixels, which allows the projected light beam formed with a micro-mirror matrix to be adaptively shaped to suit a variety of needs.
  • the control circuit can advantageously be used to segment and/or adaptively shape the projected light beam, for example so as to avoid the eyes of oncoming drivers. Sensors and control circuits can be used to automate this “glare-free” function.
  • some of the micro-mirrors in one DMD array may be in an inactive position (due to a certain tilt) while other mirrors are oriented to the "on" position and reflect light towards the imaging system, for example a projection lens. In this way it is possible to shape the beam of light projected by the lens.
  • the light radiation directed towards the micro-mirrors of the DMD matrix is only very partially used and it is generally considered that the use of a micro-mirror matrix is not energy efficient.
  • illumination sources with a DMD matrix, including when the illumination sources are of a simple/inexpensive type such as light-emitting diodes (LEDs) or similar elements.
  • LEDs light-emitting diodes
  • US2016347237A1 And US2015377442A1 also disclose an imaging system comprising, in a first imaging part, a lens adjusting to a dimension characteristic of the format of a spatial modulator, adapted to concentrate radiation from the light source.
  • the invention proposes a light module for a motor vehicle according to claim 1.
  • the imaging system thus comprises, in a first imaging part, an adjustment lens to a dimension characteristic of the determined format, adapted to concentrate radiation from the light source (the adjustment effect is for example such that the raw radiation coming from the light source is converted, after passing through the lens, into a first radiation which is within the limits of the perimeter of the reflection zone of the spatial modulator when it reaches it).
  • the imaging system is thus designed to format an intermediate image on the one hand (on the upstream side of the spatial modulator), and to format the image to be projected on the other hand (on the downstream side of the spatial modulator) .
  • a spectacular increase in optical efficiency can be obtained by shaping upstream of the high definition pixelated spatial modulator. It is permitted to remove a collimator since it involves illuminating by forming an intermediate image.
  • the flux efficiency is improved by the concentration of the beam emitted from the light source with optionally an anamorphic compression of the illumination beam routed to the reflection zone or active zone of the high definition pixelated spatial modulator. This makes it possible to adjust the intermediate image of the source formed on the reflection zone, as close as possible to the external dimensions of this zone. In practice, the external rays of the beam on the upstream side can then be incident along the perimeter of the reflection zone, without extending beyond this perimeter.
  • the high-definition pixelated spatial modulator is defined by a matrix of micro-mirrors having a reflection zone whose largest dimension is greater than the largest dimension of the light source.
  • the part of the imaging system upstream of the spatial modulator can perform an anamorphosis.
  • a technical advantage of this type of solution possibly with anamorphic compression of the image of the light source in one direction, is that it is possible to make the intermediate image coincide with the structure of the spatial modulator while allowing this same image to be enlarged to fill the input diopter of the projection optics, on the downstream side of the spatial modulator.
  • the output image can be very homogeneous. Furthermore, it is permitted to avoid unnecessarily heating the periphery of the reflection area, which is generally sensitive to heat.
  • the light source is part of a unit for emitting light rays provided with at least one reflective surface distinct from the spatial modulator and making it possible to orient the light source in a direction of distance of the light by relative to a reflection zone of the spatial modulator (in this case, we understand that the emission axis of the source is not more or less directed towards the matrix).
  • a projection screen is provided in the light module, for example parallel to a reflection zone of the spatial modulator.
  • the term “parallel” can be interpreted here with a certain tolerance, typically plus or minus 1 to 5°.
  • a second part of the imaging system can be adapted to create the desired image on the projection screen, from an intermediate image of the light source formed on the reflection zone.
  • the intermediate image is itself obtained by using a first part of the imaging system and extends exclusively within a perimeter of the reflection zone, so as not to unnecessarily heat the periphery of the this area of reflection.
  • Another object of the invention is to propose a headlight for a motor vehicle, comprising a headlight housing and at least one light module according to the invention in order to perform a lighting and/or signaling function.
  • this type of projector can advantageously present homogeneous lighting from a source, for example a light source with one or more light-emitting diodes, by targeting in an adjusted manner the active reflection surface of the DMD without overflowing, without optics of collimation.
  • a source for example a light source with one or more light-emitting diodes
  • these can be grouped on a common support or possibly distributed over several supports.
  • FIG. 1 represents a first embodiment of an optical module 1 for a motor vehicle, which can be integrated for example in a front light or a rear light.
  • the optical module 1 forms a light emitting device configured to implement one or more photometric functions.
  • the light module 1 comprises, as illustrated, a light source 2, a micro-mirror matrix 6 (or DMD, for English “Digital Micromirror Device”), a control unit 16, for example in the form of a controller, making it possible to control micro-mirrors 12 of the micro-mirror matrix 6 and projection optics 18 (or shaping optics) which belongs to an IMS imaging system.
  • the control unit 16 can optionally be relocated, for example to allow several light modules 1 to be controlled.
  • the micro-mirrors 12 are distributed in a plane, so that the matrix 6 defines an optical axis A which substantially coincides with a central axis of the projection optics 18.
  • the projection optics 18 is provided here between the reflection zone of the micro-mirror matrix 6 and a projection screen E1.
  • the drawings show a micro-mirror array 6, we understands that the light rays emitted by the light source 2 can be directed, by means of suitable optics, towards any type of high definition pixelated spatial modulator 3, which makes it possible to decompose the received radiation R1 into pixels.
  • a matrix of pixels provided with active surfaces in the focal plane of the projection optics in the form of pixels, of the "LCoS" type (from the English “Liquid Crystal on Silicon”), can be used.
  • An LCoS matrix device may indeed be suitable.
  • a first radiation R1 can be received on a surface subdivided very finely to define pixels with high definition, with typically 1280 by 720 pixels or more, knowing that a lower resolution would also be acceptable in many cases, in particular 640 by 480, and whose configurations can be modulated.
  • the change of state is preferably permitted for each pixel, in a manner known per se.
  • the light source 2 may consist of a light-emitting element such as a light-emitting diode (or LED) or an LED matrix. In the case of a group of electroluminescent elements, these are preferably packed together in the same area which can be compared to a single lighting source.
  • a laser diode where appropriate coupled with a collimator system and possibly a wavelength conversion device, can also make it possible to form raw radiation R0.
  • the light source 2 here allows the raw radiation R0 to be formed.
  • This raw radiation R0 is directed, directly or indirectly, towards a first part IP1 of the IMS imaging system.
  • This first part IP1 can be defined by a lens 4 designed and arranged in order to define a modified image of the light source 2.
  • the lens 4 can have a useful perimeter greater than or equal to the perimeter P6 of the reflection zone of the microphone matrix -mirrors 6 or reflection zone of a high definition spatial modulator 3 equivalent to this type of matrix. More particularly, the lens 4 is typically an optic operating at maximum aperture, for which some aberrations do not pose a problem, which results here in a high diameter.
  • the micro-mirror matrix 6 can optionally be covered with a layer CP for protecting the micro-mirrors 12 which is transparent.
  • the pivot axis of each of the micro-mirrors 12 can allow, by way of non-limiting example, a rotation of plus or minus 10° or plus or minus 12° relative to a nominal position without rotation.
  • the radiation R1 obtained at the exit of the lens 4 converges towards a virtual point located further than the matrix of micro-mirrors 6.
  • the radiation R2, resulting from the reflection on this matrix 6 can be focused to infinity or towards a point external to module 1 and far away.
  • the energy of the radiation R2 can be entirely received by the projection optics 18, forming the second part IP2 of the IMS imaging system.
  • the active micro-mirrors 12 are oriented in a comparable or identical manner.
  • the first part IP1 of the IMS imaging system is dimensioned and designed/assembled in the light module 1, so that the general plane of the reflection zone is inclined relative to the optical axis Z ( Figure 3 ) of the lighting system.
  • the lens 4 defines the output of an lighting system for illuminating the array of micro-mirrors 6.
  • the micro-matrix mirrors 6 can be more inclined to prevent the projection optics 18 from creating a shadow in the lighting beam resulting from the reflection by the matrix of micro-mirrors 6.
  • the light source 2 and the lens 4 can be entirely offset laterally, so as not to interfere with the radiation R2 which is reflected from the reflection zone of the micro-mirror matrix 6.
  • the lens 4 and another optical element 21 are adjacent or close to each other, and/or positioned in such a way that the optical element 21 and the envelope of the light rays upstream of the modulator 3 is as close as possible to each other.
  • the lens 4 can extend in a close position, less than 5 mm for example, such that the lens 4 is adjacent to this other optical element 21 on which the second radiation R2 is directed directly resulting from the reflection on the micro-mirror matrix 6.
  • a vertical virtual axis can for example both cross or be tangent to the respective input surfaces of the first part IP1 and the second part IP2. More generally, the lens 4 can be arranged close to the optical element 21, typically being closer to this optical element 21 than to the micro-mirror matrix 6.
  • the first part IP1 can alternatively be formed by an anamorphic lighting system.
  • the light source 2 can form a surface of 1.7 ⁇ 1.7 mm 2 , while the reflection zone of the micro-mirror matrix 6 (DMD type) extends rectangularly over a larger surface area (e.g. 12 ⁇ 6 mm 2 ).
  • the light source 2 which is typically formed by a group of diodes, has a compact appearance, without exceeding for example 9 or 10 mm 2 , preferably without exceeding 3 or 4 mm 2 , or possibly almost punctual, with an emission surface of the order of 0.1 mm 2 .
  • the anamorphic system illuminates the micro-mirror matrix 6 by using two crossed cylindrical lenses 41, 42 having aspherical entrance faces of revolution, typically for (partial) correction of aberrations.
  • the lens 41 closest to the light source 2 has its power in the direction of the strongest magnification, here horizontally when the horizontal dimension of the reflection zone is greater than its vertical dimension.
  • the first imaging part IP1 arranged upstream of the spatial modulator 3 has a mirror with an anamorphosis effect, for example a mirror with a concave reflection surface.
  • the light source 2 can optionally form part of a light ray emission unit 20 provided with at least one reflective surface (not shown) distinct from the high definition pixelated spatial modulator 3.
  • the reflective surface is of a type known in itself, so that it will not be detailed here; it can make it possible to orient the light source 2 in a direction in which the light moves away from a reflection zone of the high-definition pixelated spatial modulator 3.
  • the first part IP1 can present at least one optical element (4; 41, 42), located upstream of the spatial modulator 3 and which belongs to the IMS imaging system, in order to define, from the light R0 emitted by the light source 2, the first radiation R1 projected onto the reflection zone of the spatial modulator 3.
  • an intermediate image is formed on this reflection zone which is distorted by an optical element of the converging type, here in the form lens 4 or an anamorphic system.
  • the projection optics 18 of the second part IP2 allows shaping of the radiation R2 complementary to the shaping carried out by the first part IP1. This shaping by the projection optics 18 makes it possible to form an outgoing beam 40 which has a photometric function suitable for a vehicle, in particular a motor vehicle.
  • a preferred photometric function associated with the light module 1 is a lighting and/or signaling function visible to a human eye.
  • These Photometric functions may be the subject of one or more regulations establishing requirements for colorimetry, intensity, spatial distribution according to a so-called photometric grid, or even visibility ranges of the emitted light.
  • the light module 1 is for example a lighting device constituting a headlight 10 - or headlight - of a vehicle. It is then configured to implement one or more photometric functions, for example chosen from a low beam function called a “code function”, a high beam function called a “road function”, a fog light function.
  • the light module 1 is a signaling device intended to be arranged at the front or at the rear of the motor vehicle.
  • the headlight 10 for a motor vehicle illustrated on the figure 1 can be housed in a housing 14 or be delimited by this housing 14.
  • the housing 14, as illustrated, comprises a body 14a forming a hollow interior space receiving at least in part the light module 1.
  • a cover 14b, at least in transparent part, is coupled to the body 14a to close the interior space.
  • the cover 14b also forms a hollow, partially receiving the light module 1, in particular all or part of the projection optics 18.
  • the cover 14b is for example made of plastic resin or other suitable plastic material.
  • the lighting projector 10 may include several light modules 1 which are then adapted to emit neighboring beams, the beams preferably partly overlapping. In particular, the lateral ends of neighboring beams can be superimposed.
  • the photometric functions that can be implemented by using the light module 1 include a direction change indication function, a daytime running light function known by the English acronym DRL, for “Daytime Running Light”, a front light signature function, a position light function, a so-called “Side- marker”, which comes from English and can be translated as side signage.
  • these functions photometric indicators include a reversing indication function, a stop function, a fog light function, a direction change indication function, a rear light signature function, a lantern function, a side signal function.
  • light source 2 may be red. In the case of a function for a front light, the light source 2 is preferably white.
  • the light source 2 is inclined so that the emission axis of the lens 4 is spaced from the optical axis of the lens 4 or of the optical imaging part IP1 in the plane defined by the axes optics of the projection optics 18 and the lens 4 or the projection optics 18 and the part IP1, respectively depending on the variant adopted, in the direction of the projection optics 18.
  • the light source 2 remains facing the reflection zone of the micro-mirror matrix 6 or other reflection zone of the spatial modulator 3, in order to optimize the sharpness of the image. Although this sharpness is not important in itself for many applications, it ensures that there is no spillover of light beyond the P6 perimeter of the reflection area. Losses and peripheral heating in the potentially dangerous spatial modulator 3 are therefore avoided.
  • the light source 2 can advantageously be placed at a short distance, for example less than 10 or 15 mm, from the lens 4 which is here convergent. As clearly visible in particular on the Figure 3 , this still makes it possible to obtain a flared beam shape for the light rays of the radiation R1 propagating between the light ray emission unit 20 and the micro-mirror matrix 6.
  • the light ray emitting unit 20 comprises a reflecting mirror.
  • the micro-mirror matrix 6 is here essentially defined by an electronic chip 7, attached to a printed circuit board 8 via a suitable connector (or “socket”) 9.
  • a cooling device here a radiator 11, is attached to the printed circuit board 8 to cool the printed circuit board 8 and/or the chip 7 of the micro-mirror array 6.
  • the radiator 11 can present a protruding relief passing through an opening in the printed circuit board 8 to be in contact with this chip 7, the connector 9 leaving a passage free for this protruding relief.
  • a thermal paste or any other means promoting thermal exchanges, accessible to those skilled in the art, can be interposed between the protruding relief and the micro-mirror matrix 6.
  • the micro-mirror matrix 6 is for example rectangular.
  • the micro-mirror matrix 6 thus extends mainly in a first direction of extension, between lateral ends of the micro-mirror matrix 6.
  • a second direction of extension which can correspond to a vertical dimension (height )
  • there are also two opposite end edges which are typically parallel to each other.
  • the first part IP1 of the IMS imaging system makes it possible to obtain homogeneity of the illumination on the micro-mirror matrix 6, the radiation R1 corresponding to an illumination with a spatial variation of the emittance similar to that of the source luminous 2. In fact, the inclination makes the emittance variation slow and limited.
  • optics that are as less sensitive as possible to variations in wavelength (for example for a single lens 4, a crown glass can be used, preferably a PSK53 type crown glass).
  • the light module 1 has a first optical element 21 arranged as an input lens for the projection optics 18, making it possible to capture the second radiation R2.
  • a spherical biconvex lens can constitute this first optical element 21.
  • a group of diopters is then provided downstream of the first optical element 21 , making it possible to define a retro-focusing system, preferably with at least one additional convergence.
  • the first optical element 21 can be placed downstream and in a position adjacent to the intersection zone 30 of the lighting beam corresponding to the radiation R1 and the reflected beam corresponding to the radiation R2 in the activated state of all the pixels of the spatial modulator 3. It is sized to capture all or most of the reflected beam.
  • the projection optics 18 ensures that the marginal rays are collimated, so that light reaching an entrance diopter of the lens assembly which follows this entrance diopter is not lost.
  • An achromatic doublet 24 can for example be provided as the last optical element.
  • the retro-focusing effect is obtained here by the presence of a converging lens 22 and a diverging lens (which may optionally be part of the achromatic doublet 24 or be formed by an independent lens 23).
  • the short focal length typically required is thus achieved when the light module 1 must operate with a wide field (wide angle), with the counter-grid length required by the lighting and the geometry of the beam reflected by the micro-mirror matrix. 6.
  • the achromatic doublet 24 can be placed by optionally omitting the lens 23, or a simple lens can be placed to replace the achromatic doublet 24, with in this case a lens 23 formed in a specific glass different from that used in the lens. simple next.
  • the assembly formed by elements 23 and 24 makes it possible to reduce chromatic aberrations.
  • more lenses can be added and at least two different materials (crown type low chromatic dispersion glass on the one hand, and flint glass generally called “flint” in the optical field on the other hand) used to correct geometric aberrations and cancel first-order chromatism.
  • the light module 1 can thus provide outgoing radiation corresponding substantially to white, or possibly yellowish, visible light.
  • the projection optics further comprises a crown glass, typically thinner than the other lenses of the projection optics 18, and placed between two lenses of the projection optics 18 , for example between two final lenses.
  • the type of configuration of the projection optics 18, shown on the figure 1 is well suited when the draw of this optic is determined by the imposed position of its entrance diopter, knowing that the surface of its entrance pupil must generally be at least equal to that of this entrance diopter.
  • the focal length of the projection optics 18 can be determined by the desired angular aperture of the beam, horizontally or vertically, depending on the ratio between the aspect ratio of the reflection surface of the micro-mirror matrix 6 and the ratio of the desired horizontal and vertical openings for the beam to be projected (the opening in the other direction can be achieved using an anamorphosis).
  • One of the advantages of the light module 1 is to make it possible to project a homogeneous light beam with a power optimized in relation to the energy supplied to the light source 2 and the possibility of making the incident R1 radiation coincide exactly with the size and shape of the light source.
  • the light module 1 has been illustrated for a case in which the projection screen E1 is defined internally with respect to the transparent wall forming the glass of the transparent cover 14b, it is understood that a part of the transparent cover 14b or another element forming part of the external housing 14 can define the projection screen.
  • the projection optics 18 can for example be focused on a film formed on the internal side of the glass rather than on a separate screen.
  • an indication or marking can be added within the outgoing light beam 40.
  • the light module 1 can present optical imaging with a large numerical aperture (0.6 or 0.7, for example non-limiting).
  • a high definition pixelated spatial modulator 3 and the correction of aberrations makes it possible to form characters (letters, numbers or the like) with sufficient resolution to make it possible to display to the attention of people external to the vehicle messages or pictograms which are for example representative of the activation of a functionality or an operating context of the vehicle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
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Claims (14)

  1. Leuchtmodul (1) für ein Kraftfahrzeug, das dazu bestimmt ist, einen Lichtstrahl zu formen, wobei das Leuchtmodul umfasst:
    - eine Lichtquelle (2),
    - ein Bildgebungssystem (4, 18), das geeignet ist, ein Bild der Lichtquelle (2) zu erzeugen,
    - einen hochaufgelösten gepixelten räumlichen Modulator (3), der einen Reflexionsbereich mit einem bestimmten Format aufweist,
    wobei das Bildgebungssystem (IMS) mindestens zwei optische Elemente (4, 21, 22, 23, 24; 41, 42) umfasst, die stromauf und stromab des hochaufgelösten gepixelten räumlichen Modulators (3) entlang der Ausbreitungsrichtung des von der Lichtquelle (2) emittierten Lichts verteilt sind, so dass es mindestens ein Element des Bildgebungssystem stromauf und mindestens ein Element des Bildgebungssystems stromab des hochaufgelösten gepixelten räumlichen Modulators (3) gibt,
    wobei das Bildgebungssystem (IMS), in einem ersten Bildgebungsteil (IP1), eine Linse (4) zur Anpassung an ein charakteristisches Maß des bestimmten Formats, die geeignet ist, eine Strahlung der Lichtquelle (2) zu bündeln, und ein konvergentes optisches Element (4; 41, 42), das stromauf des hochaufgelösten gepixelten räumlichen Modulators (3) gelegen ist und das zum Bildgebungssystem (IMS) gehört, umfasst und
    ausgehend von dem von der Lichtquelle (2) emittierten Licht (R0) eine erste Strahlung (R1) definiert, die auf einen Reflexionsbereich des hochaufgelösten gepixelten räumlichen Modulators (3) projiziert wird, wobei sie auf diesem Reflexionsbereich ein Zwischenbild bildet, das durch das konvergente optische Element (4; 41, 42) verformt wird,
    dadurch gekennzeichnet, dass sich das konvergente optische Element (4; 41, 42) vergleichsweise weiter von dem hochaufgelösten gepixelten räumlichen Modulator (3) entfernt und näher an einem anderen optischen Element (21) erstreckt, auf das eine zweite Strahlung (R2) gerichtet wird, die direkt aus einer Reflexion der ersten Strahlung (R1) auf dem hochaufgelösten gepixelten räumlichen Modulator (3) stammt, wobei das andere optische Element (21) ein erstes optisches Element (21) einer Projektionsoptik (18) bildet, die zu dem Bildgebungssystem (IMS) gehört,
    und dadurch, dass die Projektionsoptik (18), hintereinander in dieser Reihenfolge, in einer von dem hochaufgelösten gepixelten räumlichen Modulator (3) wegführenden Richtung umfasst:
    - das erste optische Element (21), das als Eintrittslinse der Projektionsoptik (18) angeordnet ist, um die zweite Strahlung (R2) zu erfassen;
    - ein Paar optische Elemente (22, 24), die es ermöglichen, die Brennweite der Projektionsoptik (18) in Bezug auf eine größere Brennweite, die für die Projektionsoptik (18) ohne das Paar optische Elemente (22, 24) erhalten würde, zu verringern.
  2. Leuchtmodul nach Anspruch 1, wobei der hochaufgelöste gepixelte räumliche Modulator (3) durch eine Matrix aus Mikrospiegeln (6) definiert wird, die einen Reflexionsbereich besitzt, dessen größtes Maß größer als das größte Maß der Lichtquelle ist.
  3. Leuchtmodul nach Anspruch 1 oder 2, wobei das bestimmte Format des Reflexionsbereichs ein Format mit rechteckiger Umfangsbegrenzung hat.
  4. Leuchtmodul nach Anspruch 1, 2 oder 3, wobei mindestens eines der optischen Elemente des Bildgebungssystems (IMS) den ersten Bildgebungsteil (IP1) bildet, der umfasst:
    - die Anpassungslinse (4) zur Anpassung an das bestimmte Format, die dazu ausgelegt und angeordnet ist, die Strahlung der Lichtquelle (2) zu bündeln, indem eine Konturform der Strahlung definiert wird, die der Form einer Umfangsbegrenzung (P6) des Reflexionsbereichs entspricht, der durch den hochaufgelösten gepixelten räumlichen Modulator (3) definiert wird.
  5. Leuchtmodul nach Anspruch 3 oder 4, wobei der erste Bildgebungsteil (IP1), der stromauf des hochaufgelösten gepixelten räumlichen Modulators (3) angeordnet ist, mindestens ein transparentes optisches Element mit anamorphotischem Effekt aufweist.
  6. Leuchtmodul nach Anspruch 3, 4 oder 5, wobei der erste Bildgebungsteil (IP1), der stromauf des hochaufgelösten gepixelten räumlichen Modulators (3) angeordnet ist, einen Spiegel mit anamorphotischem Effekt aufweist.
  7. Leuchtmodul nach einem der Ansprüche 3 bis 6, wobei der hochaufgelöste gepixelte räumliche Modulator (3) eine Matrix aus Mikrospiegeln (6) umfasst, wobei die Mikrospiegel (12) der Matrix aus Mikrospiegeln (6) jeweils bewegbar sind zwischen:
    - einer ersten Position, in welcher der Mikrospiegel (12) angeordnet ist, um Lichtstrahlen einer ersten Strahlung (R1), die von dem ersten Bildgebungsteil (IP1) des Bildgebungssystems zu ihm gelangen, in Richtung einer Projektionsoptik (18) zu reflektieren, die einen zweiten Teil des Bildgebungssystems (IMS) beinhaltet, zu reflektieren,
    - und einer zweiten Position, in welcher der Mikrospiegel (12) angeordnet ist, um die Lichtstrahlen der ersten Strahlung (R1), die von dem ersten Bildgebungsteil (IP1) des Bildgebungssystems zu ihm gelangen, an der Projektionsoptik (18) vorbei zu reflektieren.
  8. Leuchtmodul nach einem der Ansprüche 1 bis 6, wobei der hochaufgelöste gepixelte räumliche Modulator (3) einen reflektierenden Anzeigebereich vom Typ Flüssigkristall auf Silizium umfasst.
  9. Leuchtmodul nach einem der Ansprüche 1 bis 7, umfassend eine Projektionsoptik (18),
    wobei der hochaufgelöste gepixelte räumliche Modulator (3) eine Matrix aus Mikrospiegeln (6) umfasst, die in einer Ebene verteilt sind, wobei die Matrix eine optische Achse (A) definiert, welche die Projektionsoptik (18) mittig durchquert,
    und wobei aktive Mikrospiegel der Matrix aus Mikrospiegeln (6) in einem um einen bestimmen Winkel, bevorzugt zwischen 6 und 15°, zu einem konvergenten optischen Element (4; 41, 42) hin, das stromauf des hochaufgelösten gepixelten räumlichen Modulators (3) gelegen ist und das zum Bildgebungssystem (IMS) gehört, geschwenkten aktiven Zustand sind.
  10. Leuchtmodul nach einem der vorhergehenden Ansprüche, wobei die Projektionsoptik (18) ferner einen Achromaten (24) umfasst, der bevorzugt eines der optischen Elemente des Paars optischer Elemente (22, 24) bildet.
  11. Leuchtmodul nach einem der vorhergehenden Ansprüche, wobei die Lichtquelle (2) Teil einer Lichtstrahlenemissionseinheit (20) ist, die mit mindestens einer reflektierenden Oberfläche versehen ist, die von dem hochaufgelösten gepixelten räumlichen Modulator (3) verschieden ist und es ermöglicht, die Lichtquelle (2) entlang einer von einem Reflexionsbereich des hochaufgelösten gepixelten räumlichen Modulators (3) wegführenden Richtung des Lichts auszurichten.
  12. Leuchtmodul nach einem der vorhergehenden Ansprüche, umfassend einen Projektionsschirm (E1) parallel zu einem Reflexionsbereich des hochaufgelösten gepixelten räumlichen Modulators (3), wobei ein zweiter Teil (18) des Bildgebungssystems (IMS) geeignet ist, das Bild auf dem Projektionsschirm (E1) ausgehend von einem Zwischenbild der Lichtquelle zu erzeugen, das auf dem Reflexionsbereich durch Verwendung eines ersten Teils (4) des Bildgebungssystems (IMS) gebildet wird, wobei sich das Zwischenbild vollständig innerhalb einer Umfangsbegrenzung (P6) des Reflexionsbereichs erstreckt.
  13. Leuchtmodul nach einem der vorhergehenden Ansprüche, wobei die Lichtquelle (2) im Wesentlichen aus einer Leuchtdiode oder aus mehreren Leuchtdioden besteht, die insbesondere auf einem gemeinsamen Träger gruppiert sind.
  14. Scheinwerfer (10) für ein Kraftfahrzeug, umfassend ein Scheinwerfergehäuse (14) und mindestens ein Leuchtmodul (1) nach einem der vorhergehenden Ansprüche.
EP18168421.8A 2017-04-28 2018-04-20 Leuchtmodul mit optimierter bildanzeigeoptik für einen verpixelten räumlichen lichtmodulator, der für ein kraftfahrzeug bestimmt ist Active EP3396241B1 (de)

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