WO2022178929A1 - Dispositif optique intégré à feu de route et feu de croisement, dispositif d'éclairage d'automobile, et automobile - Google Patents

Dispositif optique intégré à feu de route et feu de croisement, dispositif d'éclairage d'automobile, et automobile Download PDF

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Publication number
WO2022178929A1
WO2022178929A1 PCT/CN2021/081314 CN2021081314W WO2022178929A1 WO 2022178929 A1 WO2022178929 A1 WO 2022178929A1 CN 2021081314 W CN2021081314 W CN 2021081314W WO 2022178929 A1 WO2022178929 A1 WO 2022178929A1
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WO
WIPO (PCT)
Prior art keywords
light
guide body
light guide
cut
passing
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PCT/CN2021/081314
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English (en)
Chinese (zh)
Inventor
李志兵
祝贺
仇智平
桑文慧
Original Assignee
华域视觉科技(上海)有限公司
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Publication of WO2022178929A1 publication Critical patent/WO2022178929A1/fr

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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
    • F21S41/10—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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
    • F21S41/24—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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • 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
    • 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
    • F21W2102/155—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 having inclined and horizontal cutoff lines
    • 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 a vehicle lamp, in particular to an integrated optical device for far and near light.
  • the invention also relates to an automobile lighting device and an automobile.
  • left-hand drive headlights or right-hand drive headlights are usually designed for different needs of different countries or regions, because left-hand drive headlights can only be applied to Left-hand drive market, and right-hand drive headlights can only be used in the right-hand drive market, which leads to poor product versatility.
  • Existing headlamps with integrated left-hand drive and right-hand drive functions usually realize light-shape switching through the rotation of rotating mechanisms such as visors, shafts, and solenoid valves. Such light-shape switching methods have high noise, low modeling flexibility, and The system composition is more complicated.
  • the mechanical switching structure has a large volume, which not only affects the miniaturization of the volume of the lamp, but also easily interferes with the high beam light path of the integrated high beam and low beam lamp.
  • the light module forms the left-hand drive cut-off area illumination or the right-hand drive cut-off area illumination, and the two are combined with each other to form a left-hand drive low-beam light shape, or a right-hand drive low-beam light shape
  • the high beam module forms a high beam light shape.
  • the auxiliary low-beam module, the main low-beam module and the high-beam module in the high and low beam integrated vehicle lamp are usually arranged separately, which makes the volume of the vehicle lamp relatively large, and it is difficult to meet the requirements of the miniaturization of today's vehicle lamps.
  • the auxiliary low-beam module, main low-beam module and high-beam module need to be set close together, and if the optical elements of the low-beam broadening illumination, the optical elements of the left and right driving cut-off area illumination, and the optical elements of the high-beam illumination If the components are close together, some of the light from different optical components will enter other optical components, which will have a bad effect on the low beam shape, especially the cut-off line.
  • the technical problem to be solved by the present invention is to provide a far and near light integrated optical device, which has a high integration degree, a small volume, and a controllable light direction in different optical channels.
  • the further technical problem to be solved by the present invention is to provide an automotive lighting device, which is small in size, can switch between left and right driving lighting, and has a clear cut-off line of light and dark.
  • the technical problem to be solved by the present invention is to provide an automobile, the lamp of which is small in size, can switch the lighting light shape of left and right driving, and the lighting light shape is clear and stable.
  • one aspect of the present invention provides an integrated optical device for far and near light, including a light guide portion integrally formed by a first light guide body, a second light guide body and a third light guide body, the light guide
  • the first light guide body, the second light guide body and the third light guide body are arranged side by side in order, and a first material interface is formed between the first light guide body and the second light guide body.
  • a second material interface is formed between the second light guide body and the third light guide body, the refractive index of the first light guide body is greater than the refractive index of the second light guide body, and the second light guide body
  • the refractive index of the light body is greater than the refractive index of the third light guide body
  • a concave cut-off line structure is provided on the side of the second light guide body adjacent to the third light guide body, and the third light guide body is provided with a concave cut-off line structure.
  • Corresponding protruding structures are provided at corresponding positions of the light guide body.
  • the integrated optical device for far and near light of the present invention comprises a first light channel formed by a first light incident part, a first light pass part and a first light exit part connected in sequence; a second light incident part, a second light pass part connected in sequence The second light channel formed by the light part and the second light exit part, and the third light channel formed by the third light incident part, the third light passing part and the third light exit part connected in sequence;
  • the second light-passing portion and the third light-passing portion are arranged in sequence from top to bottom to form the light-guiding portion, the first light-passing portion is formed by the first light-guiding body, and the second light-passing portion is formed by the The second light guide body is molded, the third light passing portion is molded by the third light guide body, and the interface between the first light passing portion and the second light passing portion is formed as the first light passing portion.
  • a material interface, the interface between the second light-passing portion and the third light-passing portion is formed as the second material interface, and the cut-off is formed on the lower side of the second light-passing portion
  • Corresponding protruding structures are provided at corresponding positions on the upper side of the third light-passing portion.
  • the light enters from the first light entrance part, passes through the transmission of the first light passing part, and exits from the first light exit part, and can form a low beam widening illumination area;
  • the light enters from the second light entrance part, After being transmitted from the second light-passing portion and blocked by a cut-off line structure recessed into the second light-passing portion, after being emitted from the second light-emitting portion, it can be formed into a low-beam cut-off portion illumination area with a bright and dark cut-off line;
  • the widening illumination area is combined with the illumination area of the low-beam cut-off portion to form a low-beam illumination light shape.
  • the light enters from the third light incident part, passes through the transmission of the third light passing part, and exits from the third light emitting part to form a high beam illumination light shape.
  • the light transmitted through the first light-passing portion can produce total reflection at the first material interface between the first light-passing portion and the second light-passing portion, and cannot enter the second light-passing portion.
  • a low beam is formed.
  • the upper boundary of the lighting area is widened, and on the other hand, the light transmitted in the first light-passing portion can be prevented from entering the second light-passing portion, which affects the light-dark cut-off line of the lighting area of the low-beam cut-off portion.
  • Part of the light transmitted through the second light-passing part can pass through the first material interface, enter the first light-passing part, and exit through the first light-exiting part, so as to form between the low-beam widening illumination area and the low-beam cut-off illumination area. Partially overlapping to avoid dark areas between the two illuminated areas.
  • the light transmitted through the second light-passing part irradiates the second material interface between the second light-passing part and the third light-passing part, it will produce total reflection and cannot enter the third light-passing part, which forms a The upper boundary of the illumination area of the low-beam cut-off part, that is, the cut-off line of light and dark of the illumination area of the low-beam cut-off part.
  • Part of the light transmitted through the third light-passing part can pass through the second material interface, enter the second light-passing part, and exit through the second light-exiting part. Partial overlap is formed between the partial lighting areas, so as to avoid a dark area of lighting between the high beam lighting area and the low beam cutoff lighting area.
  • the first light incident portion is formed by the first light guide body
  • the second light incident portion is formed by the second light guide body
  • the third light incident portion is formed by the third light guide body.
  • Light guide molding the light channel formed by the first light incident portion and the first light passing portion, the light channel formed by the second light incident portion and the second light passing portion, and the third light incident portion and the third light passing portion
  • the light channels formed by the light portion are all formed by the same light guide body, which can reduce the molding process of the integrated optical device for far and near light of the present invention and improve the convenience of processing.
  • the first light incident portion, the second light incident portion and the third light incident portion are all formed by the same light guide body.
  • the structure of the light incident portion is relatively complicated, and the first light incident portion, the second light incident portion and the third light incident portion formed by the same light guide body can be processed and formed at one time, which is convenient for processing and manufacturing. The cost is also lower.
  • the protruding structure is formed by the third light guide body.
  • the protruding structure and the third light-passing portion are processed and formed by the same light guide body, which is convenient for processing.
  • the refractive index of the third light guide body is smaller than the refractive index of the second light guide body, when the light in the second light passing portion irradiates the interface between the cut-off line structure and the convex structure, it is more likely to generate total reflection, Helps to create clear cut-off lines.
  • the light in the protruding structure irradiates the interface between the protruding structure and the cut-off line structure, it can enter the second light-passing portion, forming a good transition between the high-beam illumination area and the low-beam cut-off portion illumination area .
  • the first light incident portion includes a plurality of broadening concentrating cups, and the broadening condensing cups are suitable for introducing light emitted by a light source and exiting through the first light emitting portion, so as to form a low beam broadening illumination area
  • the second light incident portion includes a cut-off portion condensing cup, and the cut-off portion condensing cup is suitable for introducing light emitted by the light source, and then exits after being blocked by the cut-off line structure, so as to be able to form a near-beam cut-off portion illumination area
  • the low-beam broadening illumination area and the low-beam cut-off portion illumination area are combined to form a low-beam illumination light shape;
  • the third light entrance portion includes a plurality of high-beam condenser cups, and the high-beam condenser cups are suitable for The light emitted by the light source is introduced and emitted through the third light emitting part, so as to form a high beam illumination light
  • the light transmitted in the first light-passing portion cannot pass through the first material interface between the first light-passing portion and the second light-passing portion, a material interface corresponding to the material interface is formed.
  • the low beam widens the upper boundary of the illumination area, and at the same time prevents the light transmitted in the first light-passing part from entering the second light-passing part, irradiating the illumination area of the low-beam cut-off part, and affecting the light-dark cut-off line of the low-beam illumination light shape.
  • a part of the light transmitted in the second light-passing portion can enter the first light-passing portion through the first material interface, forming a partial overlap of the low-beam cut-off illumination area and the low-beam broadening illumination area, so that the low-beam cut-off portion illuminates There is a good connection between the lighting area and the low beam broadening lighting area; when the light transmitted in the second light-passing part hits the second material interface between the second light-passing part and the third light-passing part, it will be totally reflected and cannot enter The third light-passing portion, which forms the upper boundary of the illumination area of the low-beam cut-off portion, that is, the light-dark cut-off line of the illumination area of the low-beam cut-off portion.
  • Part of the light transmitted through the third light-passing part can pass through the second material interface, enter the second light-passing part, and exit through the second light-emitting part, which expands the lower boundary of the high-beam lighting light shape and avoids the high-beam lighting light shape.
  • the boundary forms light and dark jumps, improving the driver's visual experience. Therefore, the cut-off line of the light shape of the low-beam illumination formed is clearer, avoiding the occurrence of a connecting dark area between the low-beam cut-off part lighting area and the low-beam broadening lighting area; the formed high-beam light is more reasonable.
  • the cut-off condensing cup includes a left-hand drive cut-off concentrator cup and a right-hand drive cut-off concentrator cup, and the light introduced by the left-hand drive cut-off concentrator cup is blocked by the cut-off line structure and passes through.
  • the second light emitting part emits to form a lighting area of the left-hand drive cut-off part; the light introduced by the right-hand drive cut-off part concentrator cup is blocked by the cut-off line forming structure and then exits through the second light emitting part, which can form Right-hand drive cut-off lighting area.
  • the left-hand drive cut-off portion lighting area and the right-hand drive cut-off portion lighting area can be formed respectively, It is combined with the low beam widening lighting area to form the left-hand driving low-beam lighting light shape and the right-hand driving low-beam lighting light shape respectively, which can conveniently form the switching of the left and right driving low-beam lighting light shapes.
  • the integrated optical device for far and near light of the present invention further includes a lens portion, the lens portion includes a lens light incident surface and a lens light exit surface, and the first light emitting portion, the second light emitting portion and the third light emitting portion are all related to the The light incident surface of the lens is integrally connected, and the light exit surface of the lens is formed as a convex curved surface.
  • the integrated optical device for far and near light of the present invention also has the function of a common lens, that is, the illumination light shape can be formed without setting up an independent lens, so the structure of the vehicle lamp can be simplified and the volume of the vehicle lamp can be reduced, Improve the stability of the lamp structure.
  • the light incident surface of the lens is formed as an outwardly convex curved surface.
  • the light incident surface of the lens is also formed as a curved surface that protrudes to the outside of the lens portion, so that the lens portion has better refractive effect and higher optical efficiency.
  • the first light guide body is a resin light guide body
  • the second light guide body is a PC light guide body or a PMMA light guide body
  • the third light guide body is a silicone light guide body
  • the resin light guide body is a light guide body of high refractive index resin material
  • the PC light guide body refers to the light guide body of PC material
  • the PMMA light guide body refers to the light guide body of PMMA material
  • the silica gel guide body refers to the light guide body of PMMA material.
  • the light body refers to the light guide body of the silicone material.
  • the refractive index of the resin material light guide body is high, the refractive index of the silicone material light guide body is low, and the refractive index of the PC or PMMA material light guide body is between the two.
  • the resin light guide body as the first light guide body
  • the PC light guide body or the PMMA light guide body as the second light guide body
  • the silicone light guide body as the third light guide body can form the first light guide body and the second light guide body.
  • the silicone material has high temperature resistance, which can prevent the light guide body from being deformed or changing the light guide performance due to the rise in temperature.
  • a second aspect of the present invention provides an automotive lighting device using the integrated optical device for far and near light provided in the first aspect of the present invention.
  • a third aspect of the present invention provides an automobile using the automobile lighting device provided in the second aspect of the present invention.
  • the integrated optical device for far and near light of the present invention comprises a light guide portion formed by arranging the first light guide body, the second light guide body and the third light guide body in sequence, wherein the first light guide body, the second light guide body and the third light guide body are arranged in parallel in order.
  • the second light guide body and the third light guide body can respectively form light channels for the light to pass through, and the three light channels can respectively form three different illumination areas; wherein, the cut-off structure arranged in the second light channel can form a belt Illuminated areas with cut-off lines.
  • the first light guide body, the second light guide body and the third light guide body are integrally formed into a light guide part including three light channels, which reduces the volume of the integrated optical device for far and near light.
  • the setting of the refractive index of the first light guide body is greater than that of the second light guide body, and the refractive index of the second light guide body is greater than the refractive index of the third light guide body, so that the light transmitted in the first light guide body can be Total reflection is generated at the first material interface, so the light transmitted in the first light guide body can be prevented from entering the second light guide body through the material interface.
  • the light transmitted in the second light guide body will not form total reflection at the interface of the first material, so part of the light can enter the first light guide body through the interface of the first material; and form total reflection at the interface of the second material, Therefore, it is possible to prevent the light transmitted in the second light guide body from entering the third light guide body through the second material interface.
  • Light in the third light guide body can enter the second light guide body through the second material interface.
  • the different light channels arranged in parallel are closely attached together, and the structure is more compact; the light in the first light guide body can be prevented from entering the second light guide body and affect the light in the second light guide body.
  • the illumination light shape of the illumination area formed by the light, and the light in the second light guide body can partially enter the first light guide body, forming the illumination area formed by the light in the first light guide body and the light in the second light guide body.
  • the overlap between the illuminated areas formed by the light prevents the formation of dark areas between the two illuminated areas.
  • the light in the second light guide can be totally reflected at the interface of the second material, forming a clear upper boundary of the illumination area formed by the light in the second light guide; and the light in the third light guide can Entering the second light guide body expands the lower boundary of the illumination area formed by the light in the third light guide body, and can form the illumination area formed by the light in the third light guide body and the light in the second light guide body. Creates an overlap between the illuminated areas to prevent dark areas from forming between the two illuminated areas.
  • the automotive lighting device of the present invention can form a plurality of different lighting areas with a smaller volume, and can conveniently form a left-hand drive low-beam lighting light shape, a right-hand drive low-beam lighting light shape and a high-beam lighting light shape, and the lighting light shape is clear and the light is illuminated.
  • the scope of the area is more reasonable.
  • the automobile of the present invention also has the above-mentioned advantages because the automobile lighting device of the present invention is used.
  • FIG. 1 is a perspective view of an embodiment of an integrated optical device for far and near light of the present invention
  • Fig. 2 is a perspective view of Fig. 1 from another perspective
  • Fig. 3 is the front-back direction schematic diagram of Fig. 1;
  • Fig. 4 is the A-A azimuth cross-sectional schematic diagram of Fig. 3;
  • Fig. 5 is the B-B azimuth sectional schematic diagram of Fig. 3;
  • Fig. 6 is the schematic diagram of the second optical channel part in Fig. 1;
  • Fig. 7 is the top view of Fig. 6;
  • Fig. 8 is a partial schematic diagram of the third optical channel in Fig. 1;
  • Fig. 9 is another perspective schematic diagram of Fig. 8.
  • FIG. 10 is a schematic diagram of the light shape of the left-hand drive low beam illumination formed by an embodiment of the far and near beam integrated optical device of the present invention.
  • FIG. 11 is a schematic diagram of the light shape of right-hand drive low beam illumination formed by an embodiment of the far and near beam integrated optical device of the present invention.
  • FIG. 12 is a perspective view of another embodiment of the integrated optical device for far and near light of the present invention.
  • Figure 13 is a perspective view of Figure 12 from another perspective
  • Figure 14 is a top view of Figure 12;
  • Fig. 15 is the C-C azimuth sectional schematic diagram of Fig. 14;
  • Figure 16 is a right side view of Figure 12;
  • Fig. 17 is the D-D azimuth sectional schematic diagram of Fig. 16;
  • FIG. 18 is a schematic diagram of one embodiment of the automotive lighting device of the present invention (only the optics are shown).
  • the first light guide body 11 The first light entrance part
  • the first light-passing part 13 The first light-emitting part
  • orientation or positional relationship indicated by the orientation words such as “front, rear, up, down, left and right” is based on the fact that the automotive lighting device of the present invention is normally installed in The orientation or positional relationship to the rear of the vehicle.
  • direction indicated by the orientation word "front” is the direction in which the light-emitting surface of the automotive lighting device faces.
  • first”, “second” and “third” are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or indicating the number of technical features indicated.
  • A”, “second”, “third” features may expressly or implicitly include one or more of said features.
  • connection may be a fixed connection, or It can be a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or an interaction relationship between the two elements.
  • connection may be a fixed connection, or It can be a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or an interaction relationship between the two elements.
  • an embodiment of the integrated optical device for far and near light includes a light guide part for guiding the light of the vehicle light, and the light guide part is composed of a first light guide body 1, a second light guide body 2 and the third light guide body 3 are integrally formed.
  • the first light guide body 1 , the second light guide body 2 and the third light guide body 3 may be integrally formed by inlay injection molding or two-color injection molding.
  • the first light guide body 1 , the second light guide body 2 and the third light guide body 3 are arranged side by side in sequence.
  • the parallel arrangement of the first light guide body 1 , the second light guide body 2 and the third light guide body 3 is relative to the transmission direction of the light, that is, the first light guide body 1 , the third light guide body 3
  • the second light guide body 2 and the third light guide body 3 are connected to each other in a direction perpendicular to the light transmission direction.
  • a first material interface 4 is formed at the part where the first light guide 1 and the second light guide 2 are in contact
  • a second material interface is formed at the part where the second light guide 2 and the third light guide 3 are in contact 5. Both the first material interface 4 and the second material interface 5 are parallel to the light transmission direction, or form a relatively small angle.
  • a cutoff line structure 24 recessed inside the second light guide body 2 is provided on the side of the second light guide body 2 adjacent to the third light guide body 3 , and the cutoff line structure 24 may be formed to be recessed into the second light guide body Inside the body 2, there is a depression of a set shape.
  • a convex structure 34 having the same shape and size as the concave shape and size of the cut-off line structure 24 is provided. form close contact.
  • the cut-off line structure 24 can block the light passing through the second light guide body, and form the light-dark boundary of the emitted light, that is, the light-dark cut-off line of the illumination area formed by the emitted light.
  • the first light guide body 1 , the second light guide body 2 and the third light guide body 3 are light guide bodies of different materials, wherein the refractive index of the first light guide body 1 is greater than the refractive index of the second light guide body 2 , The refractive index of the second light guide body 2 is greater than the refractive index of the third light guide body 3 .
  • the light transmitted in the first light guide body 1 when the light transmitted in the first light guide body 1 is irradiated on the first material interface 4 , it can form total reflection and be reflected back to the first light guide body 1 , so that the light transmitted in the first light guide body 1 can be Can not enter the second light guide body 2; when the light transmitted in the second light guide body 2 is irradiated on the first material interface 4, total reflection will not occur, and part of the light can occur at the first material interface 4 refracted to enter the first light guide body 1 .
  • the light guide part of the integrated optical device for far and near light of the present invention forms three different light paths respectively composed of the first light guide body 1, the second light guide body 2 and the third light guide body 3, and, Lights in different light paths can traverse between different paths according to a set direction.
  • the integrated optical device for far and near light of the present invention includes a first light incident portion 11 , a first light passing portion 12 , and a first light exit portion. part 13 , the second light incident part 21 , the second light passing part 22 , the second light exit part 23 , the third light entrance part 31 , the third light passing part 32 and the third light exit part 33 .
  • the first light incident part 11 , the first light passing part 12 and the first light emitting part 13 are connected in sequence to form a first light channel.
  • the second light incident portion 21 , the second light passing portion 22 and the second light exit portion 23 are connected in sequence to form a second light channel; the third light incident portion 31 , the third light passing portion 32 and the third light exit portion 33 They are connected in sequence to form a third optical channel.
  • the first light passing portion 12 , the second light passing portion 22 and the third light passing portion 32 are arranged in sequence from top to bottom, and constitute the light guide portion of the integrated optical device for far and near light of the present invention.
  • the lower side of the second light-passing part 22 is provided with a cut-off line structure 24 recess extending back and forth.
  • the cut-off line structure 24 is recessed in the middle of the second light-passing part 32 in the left-right direction, and has a cut-off line corresponding to the low beam shape.
  • the boundary corresponding to the shape; the corresponding position on the upper side of the third light-passing portion 32 is provided with a convex structure 34 that is consistent with the shape and size of the recess of the cut-off line structure 24 .
  • the protruding structure 34 is located in the cut-off line structure 24 inside the second light passing portion 22, and forms a close contact therebetween.
  • the light can enter the first light channel from the first light incident part 11 , be transmitted through the first light passing part 12 , and be emitted from the first light exit part 13 .
  • the part of the light can be projected by the converging optical element to form the first illumination area.
  • the converging optical element can be an independent element in the lamp, such as a lens, or an attached light-condensing structure on the optical device.
  • the light can enter the second light channel from the second light incident portion 21 , be transmitted through the second light passing portion 22 , and be blocked by the cut-off line structure 24 , and then be emitted from the second light exit portion 23 .
  • the part of the light can be projected by the converging optical element to form a second illumination area with a cut-off line.
  • the light can enter the third light channel from the third light incident part 31 , be transmitted through the third light passing part 32 , and be emitted from the third light exit part 33 .
  • the part of the light can be projected by the converging optical element to form a third illumination area.
  • the first light passing portion 12 is formed by the first light guide body 1
  • the second light passing portion 22 is formed by the second light guide body 2
  • the third light passing portion 32 is formed by the third light guide body 3
  • the first light passing portion 22 is formed by the second light guide body 2 .
  • the interface between the light part 12 and the second light pass part 22 forms the first material interface 4
  • the interface between the second light pass part 22 and the third light pass part 32 forms the second material interface 5 .
  • the light transmitted from the first light-passing portion 12 is irradiated to the first material interface 4
  • total reflection will occur, which prevents the light in the first light-passing portion 12 from entering the second light-passing portion 22, and on the one hand forms the first light-passing portion 22.
  • the clear upper boundary of the illumination area can prevent the light in the first light-passing portion 12 from irradiating the second illumination area and affect the clarity of the cut-off line in the second illumination area.
  • the transition lighting area at the lower part of the third lighting area is formed, and the lighting boundary at the lower part of the third lighting area is expanded, so that the lower part of the third lighting area overlaps with the upper boundary of the second lighting area, preventing An illuminated dark area occurs between the third illuminated area and the second illuminated area.
  • the first light incident portion 11 , the second light incident portion 21 and the third light incident portion 31 may have light incident structures, and the light incident structures may be condensing cups or other light incident surfaces with flat, concave or convex surfaces.
  • Light incident structure; the light incident structures of the first light incident portion 11 , the second light incident portion 21 and the third light incident portion 31 may be the same or different.
  • the light incident structure can better guide the light emitted by the light source.
  • the first light emitting portion 13 , the second light emitting portion 23 and the third light emitting portion 33 may be a light emitting structure with a light emitting surface, or may be a light emitting surface at the front end of the corresponding light passing portion.
  • the shape of the light-emitting surface can be freely designed according to the needs of the lighting area, and can be a plane, a cylindrical surface, a concave surface, a convex surface or a free-form surface. can be different.
  • the second light incident part 21 , the second light passing part 22 and the second light exit part 23 are all made of the second light guide body 2 , the third light entrance part 31 , the third light passing part 32 and the third light exit part
  • the parts 33 are all made of the third light guide body 3 , and the entire optical device for far and near light is integrally formed.
  • the first light incident portion 11 , the first light passing portion 12 and the first light exit portion 13 are made of the same material, and there is no space between the first light incident portion 11 , the first light passing portion 12 and the first light exit portion 13 .
  • the second light incident part 21, the second light passing part 22 and the second light exit part 23 are also made of the same material, the second light incident part 21, the second light passing part 22 and the second light exit part 23 There is no interface between them; similarly, the third light incident part 31, the third light passing part 32 and the third light exit part 33 are also made of the same material, the third light incident part 31, the third light passing part 32 and the third light There is also no interface between the three light-emitting parts 33 . In this way, when the light passes through the corresponding light channel, no reflection is generated due to the interface, and the light efficiency of the light passing through the light channel is high.
  • the first light incident portion 11 , the second light incident portion 21 and the third light incident portion 31 are all formed by the same light guide body.
  • the light guide body may use one of the first light guide body 1 , the second light guide body 2 or the third light guide body 3 , or may use another different light guide body.
  • the first light incident part 11 , the second light incident part 21 and the third light incident part 31 can preferably use a light guide body made of silica gel material.
  • the temperature is high, and the use of silicone material can prevent the light incident part from being deformed or aged at a high working temperature, which can ensure the stability of the output light shape and prolong the service life of the integrated optical device for far and near light.
  • the first light incident portion 11 , the second light incident portion 21 and the third light incident portion 31 are all made of the same material.
  • the light portion 21 and the third light incident portion 31 can be injection-molded at one time, which simplifies the processing technology of the integrated optical device for far and near light of the present invention, and reduces the processing cost.
  • the protruding structure 34 is formed by the third light guide body 3 .
  • the convex structure 34 formed by the third light guide body 3 is formed by the same light guide body as the third light passing portion 32 , so it can be processed at one time, and the processing and forming are more convenient.
  • the refractive index of the third light guide body 3 is smaller than that of the second light guide body 2 used in the second light passing portion 22 , the light in the second light passing portion 22 is irradiated between the cut-off line structure 24 and the protruding structure 34 . Total reflection can be generated when the interface between them is formed, which improves the light shielding effect of the cut-off line structure 24 .
  • the first light incident portion 11 includes a plurality of broadening condensing cups, which can be combined with a plurality of light-emitting light sources.
  • the light emitted by a plurality of light-emitting light sources can be introduced into the integrated optical device of the present invention, transmitted through the first light-passing portion 12, emitted through the first light-emitting portion 13, and formed by the projection of the converging optical element.
  • the first lighting area is the low beam broadening lighting area 91 as shown in FIG. 10 and FIG. 11 .
  • the second light incident portion 21 includes a cut-off portion concentrating cup, and the cut-off line structure 24 has an edge corresponding to the required shape of the cut-off line, which can block the light passing through the second light-passing portion 22 to form a second illumination The cutoff of light and dark for the area.
  • the cut-off concentrator cup can guide the light emitted by the corresponding light source.
  • the cut-off line structure 24 blocks the passing light, and the blocked light is emitted through the second light-emitting portion 23 and converged.
  • the second illumination area formed after the projection of the optical element is the illumination area 92 of the low-beam cut-off portion with the cut-off line as shown in FIG. 10 and FIG. 11 .
  • the low-beam widening illumination area 91 and the low-beam cut-off illumination area 92 are combined to form a low-beam illumination light shape with bright and dark cut-off lines.
  • the third light incident portion 31 includes a plurality of high-beam condenser cups, and the plurality of high-beam condenser cups can be in one-to-one correspondence with the plurality of light-emitting light sources, so as to be able to guide the light emitted by the plurality of light-emitting light sources into the third light-passing portion 32 , The light is emitted through the third light emitting portion 33, and the third illumination area formed by the projection of the converging optical element is formed into a high beam illumination light shape.
  • the cut-off condenser cup includes a left-hand drive cut-off section condenser cup 211 and a right-hand drive cut-off section condenser cup 212 .
  • the cut-off portion condensing cup 211 and the right-hand drive cut-off portion concentrator cup 212 can respectively correspond to the left-hand drive cut-off portion light source and the right-hand drive cut-off portion light source.
  • the cut-off line structure 24 is arranged relative to the position between the left-hand drive cut-off portion condensing cup 211 and the right-hand drive cut-off portion condensing cup 212 , and the recessed depth of the cut-off line structure 24 can run through the entire second light-passing portion 22 .
  • the corresponding position of the light-transmitting portion 22 is divided into two parts, left and right, which are separated from each other.
  • the left and right sides of the cut-off line structure 24 respectively form a slope-shaped structure.
  • the front end of the cut-off line structure 24 may be limited to the inside of the second light-passing portion 22, or may penetrate the second light-emitting portion 23 forward, and divide the second light-emitting portion 23 into left and right parts.
  • the beveled structures on the left and right sides of the cut-off line structure 24 are respectively set to correspond to the required shapes of the left-hand drive light-dark cut-off line and the right-hand drive light-dark cut-off line.
  • a left-hand drive cut-off portion illumination area 921 can be formed as shown in FIG. 10;
  • the light is emitted through the second light emitting portion 23, and after being projected by the converging optical element, the illumination area 922 of the right-hand drive cut-off portion as shown in FIG. 11 can be formed.
  • the left-hand drive cut-off portion lighting area 921 is combined with the low-beam widening lighting area 91 to form a left-hand drive low-beam lighting light pattern
  • the right-hand drive cut-off portion lighting area 922 is combined with the low-beam widening lighting area 91 to form a right-hand drive low beam lighting light pattern.
  • the top of the cut-off line structure 24 runs through the entire second light-passing portion 22 so that the light introduced through the left-hand drive cut-off concentrator cup 211 and the light introduced through the right-hand drive cut-off concentrator cup 212 are respectively limited to the corresponding second pass portions.
  • the 22 area of the light section ensures the clarity and lighting range of the low beam lighting for left and right driving, thereby ensuring driving safety.
  • the integrated optical device for far and near light of the present invention further includes a lens portion 6 .
  • the lens part 6 includes a lens light entrance surface 61 and a lens light exit surface 62 , the lens light exit surface 62 is formed as a convex curved surface protruding to the outside of the lens part 6 , the first light exit part 13 , the second light exit part 23 and the third light exit part 33 are integrally connected with the light incident surface 61 of the lens.
  • the light introduced by the first light incident portion 11 directly enters the lens portion 6 through the first light exit portion 13, and is refracted by the lens portion 6 and then exits through the lens light exit surface 62 to form a first illumination area;
  • the light directly enters the lens part 6 through the second light exit part 23 , and is refracted by the lens part 6 and then exits through the lens light exit surface 62 to form a second illumination area;
  • the light introduced through the third light entrance part 31 passes through the third light exit part 33 It directly enters the lens part 6 and is refracted by the lens part 6 and then exits through the lens light emitting surface 63 to form a third illumination area.
  • the lens part 6 is provided in the integrated optical device for far and near light of the present invention, the lens part 6 can act as a condensing optical element to project the light emitted by the first light emitting part 13 , the second light emitting part 23 and the third light emitting part 33 , forming Therefore, the converging optical element independently provided in the vehicle lamp can be omitted, and the structure of the vehicle lamp can be simplified.
  • the lens portion 6 is integrally connected with other components of the integrated optical device for far and near light, the mutual positional stability is higher, and the formed illumination area is also more stable.
  • the light incident surface 61 of the lens is also formed as a convex curved surface that protrudes to the outside of the lens portion 6 .
  • the first light emitting portion 13 , the second light emitting portion 23 and the third light emitting portion 33 are all formed as concave curved surfaces concave toward the first light passing portion 12 , the second light passing portion 22 and the third light passing portion 32 respectively.
  • the lens part 6 may be formed by any one of the first light guide body 1 , the second light guide body 2 or the third light guide body 3 , or may be formed by another different light guide body.
  • the lens part 6 can be processed and formed by selecting a light guide body with a larger refractive index, and the lens light incident surface 61 of the convex curved surface has higher optical efficiency.
  • the first light guide body 1 is a resin light guide body with a high refractive index
  • the second light guide body 2 is a PC light guide body or a PMMA light guide body
  • the third light guide body 3 is a silica gel light guide body.
  • the refractive index of resin is usually significantly greater than that of PC and PMMA, and the refractive indices of PC and PMMA are both greater than those of silica gel.
  • the automotive lighting device of the present invention adopts the integrated optical device for far and near light according to any embodiment of the present invention.
  • the integrated optical device for far and near light of the present invention includes a first light incident portion 11, a first light passing portion 12, a first light exit portion 13, a second light incident portion 21, a second light passing portion 22, a second light exit portion 23, and a second light passing portion 23.
  • the first light incident portion 11 , the first light passing portion 12 and the first light exit portion 13 are all made of the first light guide body 1
  • the second light incident portion 21 , the second light passing portion 22 and the second light exit portion 23 are all made of the first light guide body 1 .
  • the second light guide body 2 It is made of the second light guide body 2 , and the third light incident part 31 , the third light passing part 32 and the third light exit part 33 are all made of the third light guide body 3 .
  • the first light incident portion 11 , the first light passing portion 12 and the first light exit portion 13 are integrally connected from the back to the front, and the second light incident portion 21 , the second light passing portion 22 and the second light exit portion 23 are integrally connected from the back to the front
  • the third light incident part 31 , the third light passing part 32 and the third light exit part 33 are integrally connected from the back to the front, and the first light passing part 12 , the second light passing part 22 and the third light passing part 32 Arranged side by side from top to bottom.
  • the first light incident portion 11 is provided with a plurality of widening condensing cups
  • the second light incident portion 21 is provided with a left-hand drive cut-off portion concentrator cup 211 and a right-hand drive cut-off portion condensing cup 212
  • the third light incident portion 31 is provided.
  • a plurality of high beam condenser cups are provided.
  • the lower side of the second light passing portion 22 is provided with a cut-off line structure 24 recessed into the second light passing portion
  • the upper side of the third light passing portion 32 is provided with a convex structure having the same shape and size as the cut-off line structure 24 34.
  • the protruding structure 34 is located in the cut-off line structure 24, and the two are in close contact.
  • the number of low beam widening light sources 71 is consistent with the number of widening concentrating cups, and are respectively arranged at the light entrances of the corresponding widening concentrating cups; , the left-hand drive cut-off light source 721 is set at the light entrance of the left-hand drive cut-off concentrator cup 211, the right-hand drive cut-off light source 722 is set at the light entrance of the right-hand drive cut-off condenser cup 212; The number is the same as that of the high-beam condenser cups, and they are respectively arranged at the light entrances of the corresponding high-beam condenser cups.
  • a lens 8 is disposed in front of the first light emitting portion 13 , the second light emitting portion 23 and the third light emitting portion 33 .
  • the low beam broadening light source 71 When the low beam broadening light source 71 is turned on, the light emitted by each low beam broadening light source 71 is introduced by the corresponding broadening concentrator cup, transmitted through the first light-passing part 12 , emitted through the first light emitting part 13 , and projected through the lens 8 , forming a low beam broadening illumination area 91 as shown in FIG. 10 and FIG. 11 .
  • the left-hand drive cut-off light source 721 When the left-hand drive cut-off light source 721 is turned on, the light emitted by the left-hand drive cut-off light source 721 is introduced into the left-hand drive cut-off concentrator cup 211 , transmitted through the second light-passing portion 22 and blocked by the cut-off structure 24 , and then passes through the second The light-emitting portion 23 emits light and is projected by the lens 8 to form a left-hand drive cut-off portion illumination area 921 as shown in FIG. 10 .
  • the light emitted by the right-hand drive cut-off light source 722 is introduced into the right-hand drive cut-off concentrator cup 212 , transmitted through the second light passage 22 and blocked by the cut-off structure 24 , and then passes through the second The light-emitting portion 23 emits light and is projected by the lens 8 to form a right-hand drive cut-off portion illumination area 922 as shown in FIG. 11 .
  • the low beam widening light source 71 and the left-hand drive cut-off light source 721 are turned on at the same time, as shown in FIG.
  • the low-beam widening lighting area 91 and the left-hand driving cut-off lighting area 921 are combined to form the left-hand driving low beam lighting light shape;
  • the light broadening light source 71 and the right-hand drive cut-off light source 722 are turned on at the same time, as shown in FIG.
  • Part of the light in the second light-passing portion 22 can enter the first light-passing portion 12 and exit through the first light-emitting portion 13, and is projected by the lens 8 to form between the low-beam widening illumination area 91 and the low-beam cut-off illumination area 92 the overlap between the two to prevent dark areas of lighting between them.
  • the light in the second light-passing portion 22 cannot enter the third light-passing portion 32 , forming a clear light-dark boundary line in the upper portion of the illumination area 92 of the low-beam cut-off portion.
  • the high-beam light sources 73 are turned on, the light emitted by each high-beam light source 73 is introduced by the corresponding high-beam condenser cup, transmitted through the third light-passing portion 12, emitted through the third light-emitting portion 33, and projected by the lens 8, Form a high beam lighting light shape.
  • Part of the light in the third light-passing portion 32 can enter the second light-passing portion 22 and exit through the second light-exiting portion 23.
  • the automotive lighting device of this embodiment uses an integrated optical device for far and near light to form four different lighting areas, and the structure is more compact. And it can prevent the light emitted by the low beam broadening light source 71 from entering the second light passing portion 22, interfering with the light distribution pattern of the low beam cutoff portion illumination area 92, and affecting the clarity of the light and dark cutoff lines.
  • the first light guide body 1, the second light guide body 2 and the third light guide body 3 can respectively form a light path, the first light guide body 1, the second light guide body 3 2 and the third light guide body 3 are connected in parallel in sequence, so that the structure of the integrated optical device for far and near light is more compact, and the volume can be designed to be smaller.
  • the setting of the cut-off line structure 24 can form a light-dark cut-off line of the low beam illumination light shape.
  • the refractive index of the first light guide body 1 is greater than the refractive index of the second light guide body 2 , which can prevent the light in the first light guide body 1 from entering the light channel of the second light guide body 2 and interfere with the second light guide body 2
  • the light distribution pattern formed by the light in the light channel, and part of the light in the second light guide body 2 can enter the first light guide body 1, forming the overlapping part between the illumination areas formed by the light in the two light channels , to prevent illuminated dark areas from appearing between the two illuminated areas.
  • the refractive index of the second light guide body 2 is greater than the refractive index of the third light guide body 3 , which can prevent the light in the second light guide body 2 from entering the third light guide body 3 and form the light in the second light guide body 2 and the light in the third light guide body 3 can enter the second light guide body 2 , extending the lower boundary of the illumination area formed by the light in the third light guide body 3 .
  • a plurality of widening condensing cups are provided on the first light incident portion 11 , and a left-hand cut-off portion concentrating cup 211 and a right concentrating cup 211 are respectively provided on the second light incident portion 21 .
  • the cut-off part concentrator cup 212 and set the cut-off line structure 24 at the relative position in the middle, which can be used to form the left-hand drive low-beam lighting light shape and the right-hand drive low-beam lighting light shape respectively through the integrated optical device of the far and near beams, and can be used for
  • the control of the corresponding light source can easily switch the light shape of the left and right driving low beam lighting.
  • a plurality of high beam condensing cups are provided on the third light incident portion 31, so that the irradiation range and illuminance of the high beam beam can be improved.
  • the automotive lighting device of the present invention adopts the integrated optical device for far and near beams of the present invention, which can form a plurality of different lighting areas with a smaller volume, and conveniently form the light shape of left-hand drive low-beam lighting, right-hand drive low-beam lighting light shape and far
  • the light shape of the light is illuminated, and the light shape of the illumination is clear, and the range of the illumination area is more reasonable.
  • the automotive lighting device using the preferred embodiments of the integrated optical device for far and near beams of the present invention also has the advantages of the preferred embodiments.
  • the automobile of the present invention using the automobile lighting device of any embodiment of the present invention, also has the above advantages.
  • description with reference to the terms “one embodiment”, “some embodiments”, “an embodiment”, etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example includes in at least one embodiment or example of the present invention.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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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)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

La présente invention concerne un dispositif optique intégré à feu de route et feu de croisement, un dispositif d'éclairage d'automobile le comprenant, et une automobile. Le dispositif optique intégré à feu de route et feu de croisement comprend une partie de guidage de lumière formée d'un seul tenant par un premier corps de guidage de lumière (1), un deuxième corps de guidage de lumière (2), et un troisième corps de guidage de lumière (3). Dans la partie de guidage de lumière, le premier corps de guidage de lumière (1), le deuxième corps de guidage de lumière (2), et le troisième corps de guidage de lumière (3) sont disposés l'un après l'autre en parallèle ; une première surface limite de matériau (4) est formée entre le premier corps de guidage de lumière (1) et le deuxième corps de guidage de lumière (2) ; une seconde surface limite de matériau (5) est formée entre le deuxième corps de guidage de lumière (2) et le troisième corps de guidage de lumière (3) ; l'indice de réfraction du premier corps de guidage de lumière (1) est supérieur à celui du deuxième corps de guidage de lumière (2), et l'indice de réfraction du deuxième corps de guidage de lumière (2) est supérieur à celui du troisième corps de guidage de lumière (3) ; le côté du deuxième corps de guidage de lumière (2) adjacent au troisième corps de guidage de lumière (3) est pourvu d'une structure de ligne de découpe évidée (24) ; et une position correspondante du troisième corps de guidage de lumière (3) est pourvue d'une structure de ligne en relief correspondante (34). Le dispositif optique intégré à feu de route et feu de croisement présente une structure compacte, et la direction de la lumière dans un canal optique différent peut être commandée.
PCT/CN2021/081314 2021-02-24 2021-03-17 Dispositif optique intégré à feu de route et feu de croisement, dispositif d'éclairage d'automobile, et automobile WO2022178929A1 (fr)

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