EP3722663A1 - Optische einheit, die einen lichtstrahl mit hell-dunkel-grenze erzeugen kann - Google Patents

Optische einheit, die einen lichtstrahl mit hell-dunkel-grenze erzeugen kann Download PDF

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Publication number
EP3722663A1
EP3722663A1 EP20164742.7A EP20164742A EP3722663A1 EP 3722663 A1 EP3722663 A1 EP 3722663A1 EP 20164742 A EP20164742 A EP 20164742A EP 3722663 A1 EP3722663 A1 EP 3722663A1
Authority
EP
European Patent Office
Prior art keywords
optical
cut
edge
optical part
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20164742.7A
Other languages
English (en)
French (fr)
Other versions
EP3722663B1 (de
Inventor
Ibrahima N DIAYE
Pascal GARIN
Clément OLCHEWSKY
Julien Aubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP3722663A1 publication Critical patent/EP3722663A1/de
Application granted granted Critical
Publication of EP3722663B1 publication Critical patent/EP3722663B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • F21S41/29—Attachment 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
    • 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
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape 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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment 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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the present invention relates to the field of automotive vehicle lighting. Particularly, the invention relates to an optical assembly capable of generating a light beam having a cut-off line and to a light module comprising such an optical module.
  • Said beam also called a cut-off beam
  • the beam having a cut-off line may be a beam complementary to the dipped beam and configured so that the combination of said complementary beam with the dipped beam forms a main beam.
  • optical parts are arranged to send light rays to specific places.
  • an assembly can comprise an elliptical reflector, a folder and a converging lens located downstream of the reflector and the folder.
  • a disadvantage of this type of optical part is that it requires a high degree of precision in the positioning of the parts relative to each other for precise and efficient reflection, so as to have a sharp and precise cut line. positioned.
  • an objective of the invention is to provide an optical system generating a cut-off beam having a clear cut-off line and positioned in a precise manner.
  • Said optical assembly further comprises a reflecting material distinct from the material of the first optical part and arranged on said first face, the reflecting material extending from the cut-off edge towards the elementary outputs. Furthermore, the reflective material and the first optical part are arranged so as to hold onto each other without additional part and so that the reflective material is in direct contact with the cut-off edge.
  • the production of a reflection means by adding the reflecting material to the first single-piece optical part makes it possible to overcome these positioning problems for the reflection members while having good reflection efficiency.
  • the image of the beam generated by the optical assembly according to the invention is therefore clear and precise.
  • the reflective material can be attached to the first optical part, for example by means of plating members.
  • optical assembly according to the invention can optionally comprise one or more characteristics described in the following paragraphs.
  • direct contact between the reflecting material and the cut-off edge is made with all of said cut-off edge.
  • the reflecting material is formed by a reflection member distinct from the first optical part or by a reflecting coating.
  • the reflective material has a reflectivity rate of at least 85%. Thus, there is less loss of light rays.
  • the reflecting material when the reflecting material is formed by a reflecting coating, the latter is made of aluminum or of silver, in particular formed by a deposit, such as an aluminizing.
  • the method of manufacturing the reflective material is simple and inexpensive.
  • said first optical part comprises at least one plating member arranged so that the first face of the reflection member is in direct contact with the cut-off edge, said first optical part and the plating member being formed in one single piece.
  • the space between the reflecting material and the cut-off edge of the first optical part is eliminated.
  • the reflective material perfectly matches the cut-off edge of the first optical part, which prevents the formation of black bands at the level of the cut-off line on the projected image of the beam generated by the optical assembly.
  • the plating member being integral with the first optical part, this therefore simplifies the assembly of the first optical part with the reflection member and makes it possible to eliminate mounting irregularities due to a third-party fixing means.
  • the first face of the reflection member has a downstream central portion. Direct contact between the reflective material and the cutting edge is made with this downstream central portion. In addition, this central portion is in direct contact with the first optical part only on the cut edge.
  • downstream central portion is delimited downstream by a downstream edge, the direct contact between the downstream central portion and the first optical part being formed by the direct contact of said downstream edge with the entire cut-off edge. It is therefore here an edge to edge contact between the reflection member and the first optical part.
  • the reflector has on one side the first face and on the other side a second face, the second face being reflective.
  • the first optical part comprises stop members in contact with stops of the reflection member so as to block the movement of the reflection member relative to the first optical part according to at least one of these three axes.
  • the reflection member is fixed immobile relative to the first optical part along at least one of the three axes, which makes it possible to avoid poor positioning between these two parts which can degrade the beam emitted by the assembly. optical.
  • At least one of the stop members is arranged so as to press the reflecting member against the cut edge.
  • the stop member and the plating member are made in one piece.
  • the reflection member comprises at least one elastic portion under stress against a corresponding bearing portion of the first optical part so as to generate a force pressing at least one stop of the member. of reflection against the corresponding stop member of the first optical part.
  • the support of the elastic portion against the corresponding portion ensures that the reflection member is in contact with the stop members of the first optical part.
  • the elastic portion is formed of an elastic tongue.
  • the reflection member is formed by one or more plates.
  • the reflection member comprises two parts: a reflecting plate and a support plate, said support plate being carried by the first optical part and carrying the reflecting plate. Direct contact is made at the reflective plate.
  • the plate or the support plate comprises elastic tabs forming the elastic portions.
  • the bearing portion is formed by a projecting block disposed on one side of the first optical part.
  • the elastic portion is formed by an elastic tongue located opposite said protruding block, the elastic tongue resting under stress against the protruding block while being curved away from the first face of the first optical part.
  • such a light module generates a cut-off beam without a black band at the cut-off line of said beam, which improves the optical performance of the module.
  • the light module according to the invention can optionally include one or more characteristics set out in the following paragraphs.
  • the light module further comprises an assembly for generating light rays.
  • the first optical part is arranged on one side of the reflecting member and the light ray generating assembly emitting light rays on the other side so that the reflecting member forms a bender for the rays coming from the assembly for generating light rays, and so as to form a second beam having on the one hand a cut-off line substantially identical to that of the first beam, and on the other hand a shape complementary to that of the first beam at this cutoff line.
  • the second beam is a low beam while the first beam is an upper part of the high beam, so that the two beams together form a high beam.
  • the first beam is devoid of a black band. Consequently, the driving beam formed by the first and second beams is free from a transition marked by a shadow line between said beams. Such a high beam thus exhibits high optical performance.
  • the first optical part of the optical assembly according to the invention comprises several light guides.
  • the first beam generated by the optical assembly according to the invention is a pixelized beam with a cut-off line.
  • the projection of said pixelated beam forms an image composed of illumination units, also called “pixels” in English.
  • the high beam partly including the first beam can perform an adaptive lighting function, because at least the first beam is pixelated, which allows a shadow area to be generated above the second beam.
  • the adaptive function therefore makes it possible to offer better visibility to the driver of the vehicle during the night while avoiding dazzling the driver of the vehicle coming in front and / or of the following vehicle detected by presence sensors.
  • the first beam generated by the optical assembly according to the invention may be a passing beam.
  • the second beam generated by the light ray generation assembly may be a beam complementary to the passing beam.
  • the figures 1 to 17 illustrate a first embodiment of an optical assembly 1 according to the invention.
  • the optical assembly is arranged so as to produce a cut-off beam which is complementary to a dipped beam and forms an upper part of a main beam.
  • the optical assembly 1 has a longitudinal axis X extending in an upstream direction downstream of the first optical part 2
  • axes are also shown in the figures.
  • One of these axes is a second transverse Y axis, in particular substantially perpendicular to the longitudinal axis X and extending from left to right in the figures.
  • a third transverse axis Z in particular substantially perpendicular, to the longitudinal axis X and to the transverse axis Y.
  • the third axis Z extends, here, from the bottom to the top of the figures.
  • the optical assembly 1 is arranged so that the longitudinal axis X is substantially parallel to the longitudinal axis of a vehicle (not shown) equipped with said optical assembly.
  • the second axis Y is substantially perpendicular to the longitudinal axis X and belongs to a horizontal plane containing said axis X.
  • the third axis Z the latter is substantially perpendicular to the other two axes and extending in a vertical direction.
  • the Y and Z axes are thus called the transverse Y axis and the vertical Z axis respectively.
  • the three axes X, Y and Z here form an orthogonal reference.
  • the first optical part 2 comprises a plurality of light guides 20.
  • Each light guide 20 extends along the longitudinal axis X and comprises an input diopter 21 and an output 22.
  • a light source (not shown on the figures 2 and 3 ) is placed in front of each input diopter 21.
  • the light guides 20 are arranged so that the light rays coming from the light sources propagate inside the guides by total internal reflection along the longitudinal axis X, from upstream to downstream, that is to say - say in the direction of the entry diopter 21 to the exit 22.
  • the first optical part 2 comprises a common outlet 23 located downstream of the outlets 22 of the light guides.
  • the common outlet 23 here forms a front face of the first optical part 2 through which the light rays exit from said first part 2.
  • the first optical part 2 further comprises a first face 24 extending between the common outlet 23 and the outlets 22 of the light guides 20.
  • the first face 24 forms part of an upper face of the first optical part 1.
  • the first face 24 is delimited downstream by a cut-off edge 25. More precisely, in the 'example illustrated, the first face 24 and the common outlet 23 join the cut-off edge 25.
  • the cut edge 25 comprises a first horizontal portion 251, a second horizontal portion 252, and an intermediate portion 253 connecting the first horizontal portion 251 to the second horizontal portion 253.
  • the first horizontal portion 251 is located higher than the first second horizontal portion 252.
  • the intermediate portion 253 is inclined by a value of between 15 ° and 45 ° relative to the horizontal.
  • the optical assembly 1 is designed so as to generate a beam having a cut-off line and which is complementary to a passing beam.
  • the cut-off beam generated by the optical assembly 1 constitutes the upper part of a main beam.
  • the projection of the first horizontal portion 251 forms a first part of the cut-off line situated below the horizon.
  • the projection of the second horizontal portion 252 forms a second part of the cut-off line located above the horizon.
  • the projection of the intermediate portion 253 forms part of the middle of the cut-off line, inclined relative to the horizon.
  • the first optical part 2 has a main axis A parallel to the longitudinal axis X and passing through the middle of the intermediate portion 253 of the cut edge 25.
  • the reflecting material is formed by a reflection member 5 separate from the first optical part 2 and having a first face.
  • the reflection member 5 is arranged on the first optical part 2 so that the first face of the reflection member 5 is located opposite the first face 24 of the first optical part 2 .
  • the reflection member 5 is composed of a reflecting plate 51 and a support plate 52. In another embodiment, the reflection member can be made in one piece.
  • the reflecting plate 51 is here a thin metal blade and delimited downstream by a downstream edge 550.
  • the reflecting plate 51 has on one side a first face 511 and on the other side a second reflecting face 513.
  • the first face 511 of the reflective plate 51 forms the first face of the reflector 5.
  • the support plate 52 serves to support said plate 51 and to keep it fixed to the first optical part 2.
  • the reflective plate 51 is secured to the support plate 52 by gluing, welding or screwing.
  • the support plate 52 is hollowed out so as to leave the first face 24 exposed. In this way, when the reflective plate 51 is placed on the support plate 52, the first face 511 of the reflective plate 51 faces the opposite side. first face 24 of the first optical part 2.
  • the reflecting plate 51 extends from the cut-off edge 25 downstream.
  • the downstream edge 550 of the reflective plate 51 is perfectly aligned with the cut-off edge 25.
  • the front edge 550 is positioned neither in front of nor behind the cut-off edge 25.
  • the profile of the downstream edge 550 is identical to the profile of the cut-off edge 25 which is here curved in the direction of the entry diopters 21.
  • the cut-off edge 25 has a step formed by the intermediate portion 253.
  • the reflecting plate 51 and the support plate 52 are made, for example by folding, so that the downstream edge 550 has the same profile as the cut edge 25, that is to say with two horizontal portions 551, 552 connected to each other by an inclined linear portion 553, as shown in figure 5 .
  • the reflector 5 comprising the reflecting plate 51 and the support plate 52, also has the axis A as the main axis. This virtually divides the optical assembly 1 into two parts, including a first part 4 located to the left of the main axis A and a second part 6 located to the right of said main axis A.
  • the terms "left”",” Right denote respectively the left of the figure 4 and the right of the figure 4 .
  • the reflective plate 51 is in direct contact with the entire cut-off edge 25. More precisely, the first face 511 of the reflective plate 51 has a downstream central portion 510. The direct contact of the reflective plate 51 with the whole of the cut-off edge 25 is produced with this downstream central portion 510.
  • the central portion 510 is in direct contact with the first optical part 2 only on the cut edge 25. Specifically, the portions of the downstream edge 510 are in contact with the corresponding portions of the cut edge 25.
  • the first horizontal portion 551 of the downstream edge 550 is in direct contact with the first horizontal portion 251 of the cut-off edge 25, the second horizontal portion 552 of the downstream edge 550 is in direct contact with the second horizontal portion 252 of the edge 25, and the inclined linear portion 553 is in direct contact with the intermediate portion 253 of the cut edge.
  • plating members 26 and 29 located respectively at the front and at the rear of the first optical part 2. These plating members are hereinafter called the front plating member 26 and 1. rear tackle member 29 and details thereof are illustrated on the figures 6 to 14 .
  • the plating members 26 and 29 are made in one piece with the first optical part 2.
  • the first optical part 2 comprises two identical front plating members 26 which are respectively arranged on a left side and on a right side of the first optical part 2.
  • the front plating members 26 have the same shape whatever their location, only the front plating member located to the right of the main axis A, referenced 26a, will be described. This description applies in the same way to the plating member located to the left of the main axis A, referenced 26b in the figures. If there are any differences between the two sides, these will be addressed. The same applies to the elements in connection with the front plating members.
  • the front plating member 26a cooperates with the support plate 52 and the reflecting plate 51.
  • the support plate 51 comprises two side arms 520 extending from upstream to downstream and arranged symmetrically with respect to the main axis A.
  • Each side arm 520 includes a free end 521.
  • the reflecting plate 51 may comprise two side members 512 extending on either side of a central portion 510 comprising the downstream edge 550.
  • the side members 512 of the reflective plate 51 are superimposed with the side arms 520 of the support plate 52, and in particular at the level of the free end 521.
  • the side arm 520 of the support plate 52 and the side member 512 of the reflective plate 51 are in connection with the front right tackle member 26.
  • the front plating member 26a may comprise a first portion 261 extending along the vertical axis Z and a second portion 262 extending along the longitudinal axis X from from one end of the first portion 261 upstream.
  • the front plating member 26 thus has the shape of a hook.
  • the front plating member 26a is in contact with the reflection member 5. Specifically, when the first optical part 2 and the reflection member 5 are assembled to each other, the reflection member 5 is in contact with the second portion 262 so as to block the movement of the reflection member 5 along the Z axis.
  • the lower face 263 of the second portion 262 bears against the second reflecting face 513 of the reflecting plate 51. This contact therefore prevents the reflection member 5 from moving vertically upwards.
  • the front plating member 26a serves as a stop to block the movement of the reflection member 5 along the Z axis.
  • the front plating member is also called the vertical stop member 26a.
  • the end 521 of the reflection member may be located at a distance from the first portion 261 so as to delimit a space along the longitudinal axis X. This space forms an assembly clearance. in the longitudinal direction in order to facilitate the mounting of the reflection member 5 on the first optical part.
  • the front plating member 26a ensures direct contact between the cut-off edge 25 and the downstream edge 510 of the reflecting plate 51.
  • the front plating member 26a is configured so that the lower face 263 of the second portion 262 is parallel to a horizontal plane H1 passing through the second horizontal portion 252 of the cut-off edge 25 and that the distance di between the lower face 263 and the plane H1 is equal to or slightly less than the total thickness of the reflection member 5.
  • the distance d1 is illustrated on the figure 9 .
  • the left front plating member 26b also includes a first portion and a second portion identical to those of the right front plating member 26a. Said portions therefore bear the same references.
  • the front left plating member 26b is arranged so that the lower face 263 of the second portion 262 is parallel to a horizontal plane H2 passing through the first horizontal portion 251 of the cut-off edge 25 and that the distance between the lower face 263 and the plane H2 is equal to or slightly less than the total thickness of the reflection member 5.
  • the H1 and H2 plans are illustrated on the figure 4 .
  • the front left tackle member 26b is slightly upwardly offset from the front right tackle member 26a. This offset corresponds to the distance between the H1 plane and the H2 plane.
  • the total thickness of the reflecting member is the sum of the thickness e of the support plate 52 and the thickness of the reflecting plate 51. Since the reflecting plate 51 is very thin, the thickness of said plate is not referenced in the figures.
  • the first optical part 2 can also include two lateral stop members 27 arranged so as to block the movement of the reflection member 5 along the transverse axis Y.
  • the side stop members 27 are identical and arranged symmetrically with respect to the main axis A. For this reason, only the side stop member located to the right of the main axis A, referenced 27a, is described below. after. The description applies in the same way to the other organ not described. The same applies to the elements in connection with the lateral stop members. Of course, the differences between the two sides will also be described.
  • the lateral stop member may be formed by a pin 27a projecting relative to the first face 24 of the first optical part 2.
  • the pin 27a has a circular section.
  • the pin 27a and the first optical part 2 are made in one piece.
  • the reflection member 5 comprises a slot 28a extending along the longitudinal axis X.
  • the slot 28a is formed by a first opening 514 made in the reflecting plate 51 and by a second opening 524 made in the support plate 52.
  • Said first and second openings 514 and 524 have the same dimensions and positioned in the same place.
  • the first and second openings 514 and 524 overlap and are aligned so as to form the slot 28a.
  • the width of the slot 28a, measured along the transverse axis Y is equal to the diameter of the pin 27a.
  • the pin 27a and the slot 28a are arranged so as to allow the pin 27 to slide in the slot 28a along the longitudinal axis X in the downstream direction towards the 'upstream until that the pin 27 is in abutment against an upstream transverse edge 281 so as to block the movement along the longitudinal axis X of the reflection member in the upstream direction downstream.
  • Such a displacement is represented by an arrow F1 illustrated on the figure 10 .
  • the upstream transverse edge 281 extends substantially parallel to the transverse axis Y and it is located behind the slot 28a.
  • the pin 27a once engaged in the slot 28a, blocks both the movement along the longitudinal axis X and the movement along the transverse axis Y of the reflection member 5.
  • the lateral stop member 27 is also formed by a pin of circular section referenced 27b. Said pin 27b is inserted into a slot 28b. However, unlike the straight part 6, the pin 27b is only in abutment against the upstream transverse edge 281 of the slot 28b. The pin 27b is not in abutment against the longitudinal edges 280 of the slot 28b, because the width of the slot 28b is greater than the diameter of the pin 27b. This creates play in the transverse direction facilitating the mounting of the reflector.
  • the first optical part 2 can comprise two rear plating members 29 which are identical and which are also arranged respectively on the left part and on the right part of the first optical part.
  • the rear plating members 29 have the same shape whatever their location, only the rear plating member located to the right of the main axis A, referenced hereinafter 29a, will be described. This description applies in the same way to the plating member located to the left of the main axis A, referenced 29b in the figures. If there are any differences between the two sides, these will be addressed. The same applies to the elements in connection with the rear plating members.
  • the rear right tackle 29a is shown in the figures 13 and 14 .
  • the rear right plating member 29a may comprise a straight portion 290 and a rounded portion 291 extending from a free end of said straight portion 290 downstream.
  • the rounded portion 291 and the straight portion 290 are arranged so as to define a space for receiving an elastic tongue 523.
  • the support plate 52 may comprise at least one elastic tab 523 located at the rear of said plate 52.
  • the support plate comprises two elastic tabs 523 located at the back. rear and respectively on a left side and on a right side. Only the right tab is described below.
  • the elastic tongue 523 is in contact with the rear plating member 29a while being pre-stressed, so as to block the movement along the longitudinal axis X of the reflection member 5 in the downstream direction upstream. .
  • Such a movement is represented by an arrow F2 illustrated on the figure 11 .
  • the free end 527 of the tongue 528 is in abutment under stress against the straight portion 290 of the rear plating member 29a.
  • the tongue 523 is also in abutment against the rounded portion 291 so as to block the movement of the reflection member 5 along the vertical axis Z.
  • an upper face 528 of the tongue 523 is in contact with a lower face 292 of the rounded portion 291.
  • the support plate 52 comprises two tabs 525 and 526 arranged on either side of the tab 523. These two tabs are placed on an upper face 310 of a promontory 30 located downstream of the entry diopters 21.
  • the promontory 30 is formed here by a rectangular block extending substantially parallel to the transverse axis Y.
  • the upper face 310 of the promontory 30 is flat and substantially parallel to a plane containing the X and Y axes.
  • the promontory 30 is integral with the first optical part 2.
  • the contact between the tongue 523 and the rounded portion 291 results from the fact that the distance, measured along the vertical axis Z, between the upper face 310 and the lower face 292 of the rounded portion 291 is equal to or slightly less than the thickness of the reflector 5.
  • the support plate 52 With the support plate 52 and the rear plating member 29a as configured, the support plate 52 is assembled to the first optical part 2 by clipping.
  • the rear plating member 29a therefore forms a stop member blocking both the vertical movement and the longitudinal movement of the reflection member 5.
  • the rear plating member 29 ensures direct contact between the cut edge 25 and the downstream edge 510 of the reflective plate 51.
  • the rear plating member 29a ensures direct contact between the second horizontal portion 252 of the cut edge 25 and the corresponding portion of the downstream edge 510 of the plate.
  • the first optical part 2 is arranged so that the distance, measured along the vertical axis Z, between the upper face 310 and the lower face 292 of the rounded portion 291 is equal to or slightly less than the thickness of the reflection member 5, and so that the upper face 310 of the promontory 30a of the straight part 6 is contained in the horizontal plane H1 passing through the second horizontal portion 252 of the cut-off edge 25.
  • the rear left plating member 29b also comprises a right portion and a rounded portion which are identical to those of the rear right plating member 29a. Said portions are therefore designated by the same references.
  • the same conditions must be met. fulfilled.
  • the distance, measured along the vertical axis Z, between the upper face 310 of the left promontory 30b and the lower face 292 of the rounded portion 291 of the left rear tackle member 29b is equal to or slightly less than the thickness of the reflection member 5.
  • the upper face 310 of the left promontory 30b is in the horizontal plane H2 passing through the first horizontal portion 252 of the cut-off edge 25.
  • the left promontory 30b is higher than the right promontory 30a.
  • the optical assembly 1 described in the preceding paragraphs is part of a light module 10 as illustrated on figure 16 .
  • the light module 10 comprises the optical assembly 1 and a converging lens 9.
  • the converging lens 9 is arranged so that its focus F is located in the vicinity of the cut-off edge 25 and the downstream edge 510.
  • the light module further comprises light sources 8.
  • Each light source 8 is arranged opposite each input diopter 21.
  • the light guides 20 are arranged so as to reflect light rays coming from the light sources 8 towards elementary outputs 22.
  • the light module 10 is able to generate a beam having a cut-off line along an optical axis I.
  • the optical axis I is substantially parallel to the main axis A.
  • the light source 8 emits the first light rays R1 which, after being reflected inside the light guide, are sent to the cut-off edge 25. Since the focus F of the converging lens 9 is at the edge of cut-off 25, the first light rays R1 are parallel to the optical axis I on leaving the converging lens 9. The projection of these first light rays R1 forms the cut-off line of the beam generated by the light module 10.
  • the light source 8 emits second light rays R2 which, after being reflected inside the light guide 20, pass below the cut-off edge 25.
  • the lens 9 and the optical assembly are arranged so as to that the second light rays R2 are sent towards the converging lens 9. As these second rays pass under the cut-off edge, they leave said lens along a first axis intersecting with the optical axis I and towards the same first side of a horizontal plane passing through this optical axis, here upwards.
  • the light source 8 emits third light rays R3 which, after being reflected inside the light guide 20, reach the first face 24 of the first part 2, which returns them towards the converging lens 9. They come out. then from said lens along a second axis secant to the optical axis I and also to the first side of the horizontal plane passing through this optical axis, here upwards.
  • the first face 24 of the first optical part therefore forms a bender of the beam emitted by the light source 8.
  • the projection of the second and third rays R2 and R3 forms the part situated above the cutoff line of the beam projected by the lens 9.
  • the beam obtained is a beam with a cutoff line, also called the cutoff beam.
  • the cutoff beam For example, as illustrated, it may be an upper part of a high beam.
  • the reflection member 5 does not have an optical function vis-à-vis the first optical part 2.
  • the reflection member 5 has an optical function for an assembly 20 for generating light rays placed above the optical assembly 1 in order to generate a passing beam.
  • Said crossing beam has on the one hand a cutoff line identical to the cutoff line of the beam generated by the optical assembly 1, and on the other hand forms a shape complementary to that of the beam generated by the optical assembly 1 at the level of this cut-off line.
  • the light ray generation assembly 20 is schematically illustrated in figure 16 .
  • the reflection member 5 is arranged with the generation assembly 20 so that the fourth rays R4, coming from said generation assembly 20, and passing through the downstream edge 550, are parallel to the optical axis I on leaving the converging lens 9.
  • the projection of these fourth rays R4 forms the cut-off line of the passing beam.
  • the arrangement of the reflection member 5 with the generation assembly 20 is made so that fifth rays R5, coming from said generation assembly 20 and reaching the reflecting face 513 of the reflecting plate 51, are reflected towards the converging lens 9.
  • the fifth rays R5 exit from said lens along an axis intersecting with the optical axis I and towards a second side of the horizontal plane passing through this optical axis, here downwards. Said fifth rays R5 are thus projected below the cut-off line.
  • the reflecting plate of the reflection member 5 therefore forms a bender for the light beam exiting from the assembly 20.
  • the passing beam generated by the generation assembly 20 forms with the cut-off beam generated by the optical assembly 1 a driving beam.
  • the cut-off edge 25 forming the cut-off line of the cut-off beam generated by the optical assembly 1 is in direct contact with the downstream edge 550 forming the cut-off line of the dipped beam generated by the generation assembly 20 , the cut-off lines of said beams merge on the projection, which allows a better junction between said beams.
  • the cut-off beam generated by the optical assembly 1 is devoid of a black band at the level of the cut-off line.
  • the high beam obtained from this combination is free from a black transition line formed by the black band, which therefore makes it possible to improve the optical performance of the high beam.
  • the figures 18 to 25 illustrate a second exemplary embodiment of the optical assembly 100 according to the invention.
  • the optical assembly 100 is also designed to generate a cut-off beam complementary to a passing beam and forming the upper part of a high beam.
  • the optical assembly 100 comprises a first optical part 200 and a reflection member 50 disposed on said first optical part 200.
  • the reflection member 50 also consists of a support plate 58 and a reflecting plate 57.
  • the first optical part 200 is similar to the first optical part 2 of the first exemplary embodiment.
  • the first optical part 200 comprises guides extending along the longitudinal axis X.
  • Each of the guides comprises an input diopter and an elementary output.
  • a common outlet, forming the front face 23 of the first optical part 200, is arranged downstream of the elementary outlets.
  • the upper edge of the front face 23 of the first optical part forms the cut-off edge 25.
  • the latter is identical to that presented in the first embodiment, that is to say that 'it comprises a first horizontal portion 251, a second horizontal portion 252, and an intermediate portion 253 connecting the first horizontal portion 251 to the second horizontal portion 253.
  • the plate reflective 57 is delimited by a downstream edge 550 which is in direct edge-to-edge contact with the cut-off edge 25 and perfectly aligned with said edge 25 seen from above.
  • the optical assembly 200 has a main axis A passing through the middle of the intermediate portion 253 and dividing the optical assembly 200 into a left part 4 and into a right part 6.
  • the first optical part 200 also comprises front plating members 2600, rear 2900 and side stop members 2800.
  • the front plating members 2600, rear 2900 and side stop members 2800 on the one hand and the first part optics 200 on the other hand are formed in one single piece.
  • the plating and lateral stop members are two in number. In the same pair, one is located on the right part 6 and the other on the left part 4.
  • the reference of the organs of the right part ends with the letter "a" while the reference of the organs of the left side with the letter "b".
  • the support plate 58 is in contact with the front and rear plating members and the side stop members.
  • the front plating members 2600 having the same shape, only the left member 2600a is described below. Unless otherwise indicated, the description applies in the same way to the other member 2600b. The differences between these two bodies will be mentioned.
  • the front right plating member 2600a may comprise a first portion 2610 extending substantially along the vertical axis Z and a second portion 2620 extending from one end of the first portion 2610 upstream.
  • the plating member 2600a thus has the shape of a hook.
  • the support plate 58 comprises a central portion on which the reflecting plate 57 is placed and two side portions arranged on either side of the central portion.
  • the side portions each include an elongated arm 540 or 560 extending downstream.
  • the front plating member 2900a contacts an elongated arm 560 of the support plate 58.
  • a lower face 2630 of the second portion 2620 is in contact with the upper face 530 of the support plate 58 at the level of the arm 560. This contact prevents the movement of the reflection member 50 along the vertical axis Z in the direction of distance from the first optical part 200.
  • a downstream end 5121 of the elongated arm 560 may also be in contact with a rear face 2611 of the first portion 2610, which blocks the movement of the reflection member 50 along the longitudinal axis X and in the upstream direction downstream as illustrated by the arrow F1.
  • the front plating member 2600a therefore forms a stop blocking both the vertical movement and the longitudinal movement of the reflection member 50.
  • the front plating members 2900 are arranged so as to ensure direct contact between the downstream edge 510 of the reflection member 50 with the cut-off edge 25.
  • the member front left plating 2600a is arranged so that the distance between the lower face 2630 of the first portion 2620 and a plane H1 is equal to or slightly less than the thickness of the reflection member 50.
  • the plane H1, illustrated on the figure 18 is a horizontal plane passing through the second horizontal portion 252 of the first optical part 200.
  • the plane H1 of the second example is substantially identical to that of the first example.
  • the front right plating member 2600b comprises a second portion, the lower face of which is located at a distance from a plane H2 also illustrated on the figure. figure 18 . This distance is equal to or slightly less than the thickness of the reflection member.
  • the plane H2 is a horizontal plane passing through the first straight portion 251 of the cut-off edge.
  • the plane H2 of the second example is substantially identical to that of the first example.
  • the front left plating member 2600b is offset upwards with respect to the front right plating member 2600a. This offset corresponds to the distance between the H1 plane and the H2 plane.
  • side stop members are not identical. They will therefore be described individually below.
  • the lateral stop member 2800a can be arranged on one side of the first optical part, here the right side.
  • said member 2800a is formed by a projection extending from the upper face of the first optical part 200.
  • the support plate 58 comprises a recess 580 located at the same location as the right side stop member 2800a.
  • the recess 580 is also referred to as a notch.
  • an edge 581 of the recess 580 is in contact with an internal lateral face 2810 of the member 2800a so as to block the movement of the reflection member 50 along the transverse axis Y in the direction from left to right illustrated by arrow F3.
  • the left side stop member 2800b is formed by a block projecting from the upper face of the first optical part 200.
  • Said protruding block has a thickness greater than that of the projection forming the right side stop member 2800a.
  • the support plate 58 includes a flexible tab 582 extending from a left side edge 584 of the support plate 58.
  • the flexible tab 582 is located in front of the left side stopper member 2800b.
  • the width of the flexible tongue 582 is substantially equal to the width of the member 2800b.
  • the flexible tongue 582 bears against an internal lateral face 2820 of the stop member 2800b while being bent upwards .
  • the left stop member 2800b is also called the support member.
  • the support of the tongue on the stop member 2800b makes it possible to block the lateral displacement of the support plate 58, therefore of the reflection member 50, in the direction from right to left as illustrated by arrow F4.
  • such support of the tongue 582 against the projecting block 2800b generates a force pressing the recess 580 against the projection 2800a.
  • the deformability of the flexible tongue 582 makes it possible to absorb the swelling of the medium of the reflection member 50 when the latter is mounted on the first optical part 200. In the event of swelling of the reflection part 50, it suffices to press on the swollen part of said part 50 to lay it flat. The flattening of the reflector 50 therefore causes the flexible tongue 582 to bend further.
  • the rear right plating member 2900a can comprise a straight portion 2910 and a rounded portion 2920.
  • the latter here has a substantially triangular section.
  • the rounded portion 2920 extends from an upper end of the straight portion 2910 downstream.
  • the support plate 58 comprises an upwardly curved rear portion 585, that is to say opposite the first face of the first optical part 200.
  • a rear end 5850 of the curved rear portion 585 may be in contact with the rear plating member 2900a so as to block the movement of the reflection member 50 along the vertical axis. Z in the direction of distance from the first optical part 200.
  • the rear end 5850 of the curved portion 585 is in contact with the lower face 2930 of the rounded portion 2920.
  • the rear plating member 2900a also serves as a stopper to block the movement of the reflection member 5 along the Z axis.
  • the plating member is also called the vertical stop member 2900a.
  • the support plate 58 is placed on a protrusion 250 integral with the first optical part 200.
  • the protrusion 250 is located downstream of the rear plating member. 2900b and comprises a planar upper face 251 which contacts the support plate 58.
  • the protrusion 250 and the rear plating member 2900b are arranged so that the upper face 251 of the protrusion 250 belongs to the H plane and so that the distance, measured along the vertical axis Z, between the lower face 2930 of the rounded portion 2920 and the plane H1 is substantially equal to the height h of the curved portion 585.
  • the same conditions apply analogously to the left rear plating member 2900b and to the protrusion left (not visible in the figures).
  • the upper face of the left protrusion must belong to the H2 plane.
  • the distance between the lower face of the rounded portion of the left member 2900b and the plane H2 must be substantially equal to the height h of the curved portion 585.
  • the left protrusion is higher than the protrusion 250 on the right side.
  • the height difference corresponds to the distance between the planes H1 and H2.
  • the optical assembly 100 as described can form part of the light module 10 described above by replacing the optical assembly 1 according to the first embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
EP20164742.7A 2019-04-12 2020-03-20 Optische einheit, die einen lichtstrahl mit hell-dunkel-grenze erzeugen kann Active EP3722663B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1903917A FR3095028B1 (fr) 2019-04-12 2019-04-12 Ensemble optique apte à former un faisceau lumineux à coupure

Publications (2)

Publication Number Publication Date
EP3722663A1 true EP3722663A1 (de) 2020-10-14
EP3722663B1 EP3722663B1 (de) 2022-12-14

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EP (1) EP3722663B1 (de)
CN (1) CN111810913A (de)
FR (1) FR3095028B1 (de)

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Publication number Priority date Publication date Assignee Title
CN117968008B (zh) * 2024-03-28 2024-06-21 领为视觉智能科技(宁波)有限公司 一种组合式汽车照明模组和汽车

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3067618A1 (de) * 2015-03-13 2016-09-14 Valeo Iluminacion Leuchtvorrichtung mit optischen wellenleitern
EP3159599A1 (de) * 2015-10-23 2017-04-26 Valeo Vision Leuchtvorrichtung mit optischen wellenleitern
DE102015224745A1 (de) * 2015-12-09 2017-06-14 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einer Grundlichtbaugruppe und einer Fernlichtbaugruppe
JP2017212037A (ja) * 2016-05-23 2017-11-30 スタンレー電気株式会社 車両用前照灯
US20180313511A1 (en) * 2017-04-26 2018-11-01 Hyundai Mobis Co., Ltd. Head lamp apparatus
WO2018210547A1 (de) * 2017-05-18 2018-11-22 Automotive Lighting Reutlingen Gmbh Lichtmodul eines kraftfahrzeugscheinwerfers und kraftfahrzeugscheinwerfer mit einem solchen lichtmodul

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3019267A1 (fr) * 2014-04-01 2015-10-02 Valeo Vision Systeme d'eclairage a longue portee pour vehicule automobile
FR3026461B1 (fr) * 2014-09-30 2019-04-05 Valeo Vision Module lumineux pour l'eclairage et/ou la signalisation d'un vehicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3067618A1 (de) * 2015-03-13 2016-09-14 Valeo Iluminacion Leuchtvorrichtung mit optischen wellenleitern
EP3159599A1 (de) * 2015-10-23 2017-04-26 Valeo Vision Leuchtvorrichtung mit optischen wellenleitern
DE102015224745A1 (de) * 2015-12-09 2017-06-14 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einer Grundlichtbaugruppe und einer Fernlichtbaugruppe
JP2017212037A (ja) * 2016-05-23 2017-11-30 スタンレー電気株式会社 車両用前照灯
US20180313511A1 (en) * 2017-04-26 2018-11-01 Hyundai Mobis Co., Ltd. Head lamp apparatus
WO2018210547A1 (de) * 2017-05-18 2018-11-22 Automotive Lighting Reutlingen Gmbh Lichtmodul eines kraftfahrzeugscheinwerfers und kraftfahrzeugscheinwerfer mit einem solchen lichtmodul

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Publication number Publication date
FR3095028B1 (fr) 2022-08-05
EP3722663B1 (de) 2022-12-14
CN111810913A (zh) 2020-10-23
FR3095028A1 (fr) 2020-10-16

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