WO2020244080A1 - 一种车灯光学元件、车灯模组、车辆前照灯和车辆 - Google Patents

一种车灯光学元件、车灯模组、车辆前照灯和车辆 Download PDF

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Publication number
WO2020244080A1
WO2020244080A1 PCT/CN2019/104606 CN2019104606W WO2020244080A1 WO 2020244080 A1 WO2020244080 A1 WO 2020244080A1 CN 2019104606 W CN2019104606 W CN 2019104606W WO 2020244080 A1 WO2020244080 A1 WO 2020244080A1
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Prior art keywords
light
vehicle
optical element
light source
transmission part
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PCT/CN2019/104606
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English (en)
French (fr)
Inventor
仇智平
张大攀
祝贺
Original Assignee
华域视觉科技(上海)有限公司
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Application filed by 华域视觉科技(上海)有限公司 filed Critical 华域视觉科技(上海)有限公司
Priority to US17/261,308 priority Critical patent/US11306891B1/en
Priority to DE112019004405.2T priority patent/DE112019004405T5/de
Publication of WO2020244080A1 publication Critical patent/WO2020244080A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/27—Thick lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—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]
    • 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
    • F21S41/10—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
    • 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
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21W2102/14—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 vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
    • 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
    • F21W2102/20—Illuminance distribution within the emitted light
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to the technical field of vehicle lighting, in particular to a vehicle light optical element, a vehicle light module, a vehicle headlight and a vehicle.
  • Vehicle headlights are usually equipped with vehicle light modules.
  • Vehicle light modules refer to devices or units that can be used alone or in combination to achieve different vehicle lighting functions.
  • Matrix headlight modules can The high-beam lighting area is subdivided into multiple lighting areas of the car light module to realize the ADB adaptive high-beam function, which can adaptively change the high-beam type according to the road conditions, shield the target in front of the vehicle, and avoid other roads The user is dazzling and improves driving safety.
  • a primary optical element such as a reflector and a light guide
  • a secondary optical element such as a lens
  • the combination of the primary optical element and the secondary optical element can realize the switching of far and near light.
  • Patent application CN107664295A discloses a vehicle optical module, suitable for matrix headlights, provided with a collimator lens as a primary optical element and a secondary lens as a secondary optical element.
  • Patent application CN109611780A discloses a motor vehicle high beam lighting module, suitable for matrix headlights, including a circuit board mounted with a condenser, and the condenser is located in a housing cavity formed by the circuit board, lens holder and lens Inside, where the condenser is the primary optical element of the module, and the lens is the secondary optical element of the module.
  • the assembly relationship of the car lamp module is complicated. Affected by the manufacturing precision of the primary optical element and the secondary optical element itself and the assembly accuracy of the assembly, the existing car lamp Modules have problems such as complex assembly, difficult dimming, and large optical system accuracy errors.
  • the purpose of the present invention is to overcome the problems of complicated assembly of existing vehicle lamp modules, difficulty in dimming, and large errors in the accuracy of the optical system, and to provide a vehicle lamp optical element, which is used in vehicle lamp modules.
  • a first aspect of the present invention provides an optical element for a vehicle light, the optical element for a vehicle light including a light incident part, a light transmission part and a light output part;
  • the rear end and the front end of the light transmission part along the light output direction are the light input end and the light output end respectively;
  • the light incident part includes at least one light incident structure provided at the light incident end of the light transmission part and corresponding to the light source;
  • the light-emitting portion includes a light-emitting surface protruding from a light-emitting end of the light transmission portion in a light-emitting direction;
  • the cross-sectional area of the light transmission part from the light entrance end to the light exit end gradually increases.
  • the light incident structure is arranged in a matrix at the light incident end of the light transmission part;
  • the light incident structures are arranged in at least one row on the light incident end surface of the light transmission part.
  • the light incident structure is a vertebra protruding from the light incident end of the light transmission part toward the light source;
  • each cone corresponds to the light source
  • Each of the light incident structure and the light exit surface of the light exit portion form a double convex lens structure in the light exit direction.
  • the light-emitting surface of the light-emitting portion is a curved structure continuously spliced by a plurality of convex lens surfaces.
  • the length in the transverse direction and/or the length in the longitudinal direction gradually increase;
  • the light transmission part includes a side wall connecting a light entrance end and a light exit end thereof;
  • the side wall is a spliced surface formed by a plurality of side surfaces, and the side surface is a flat surface or a curved surface;
  • Each of the side surfaces is parallel to or forms an angle with the central axis of the light transmission part.
  • At least one side surface of the light transmission part is provided with a matting pattern, and the matting pattern is a skin pattern or a matting tooth.
  • a second aspect of the present invention provides a vehicle light module, which includes a radiator, a heat dissipation bracket, a light source circuit board, and the above-mentioned vehicle light optical element;
  • the light source circuit board is arranged behind the light incident portion of the vehicle light optical element, and the light source on the light source circuit board corresponds to the light incident structure of the vehicle light optical element one to one;
  • Each light source on the light source circuit board can be independently controlled to turn on and off;
  • the vehicle light optical element is used to divide the high beam illumination area into several illumination units equal to the number of light sources, and the brightness of each illumination unit is individually controlled by the corresponding light source.
  • the light source is an LED light source or a laser light source.
  • a third aspect of the present invention provides a vehicle headlamp, the vehicle headlamp includes a lamp body and at least one of the above-mentioned vehicle lamp modules installed in the lamp body;
  • the multiple vehicle lamp modules are integrated or dispersed in the lamp body.
  • a fourth aspect of the present invention provides a vehicle, which is provided with the vehicle headlight described above.
  • the assembly relationship is simple, and the vehicle light optical element is improved.
  • the manufacturing precision of the parts and the precision of the optical system At the same time, the volume of the optical component of the car light can be adaptively reduced when the light distribution requirements are met, which is conducive to integrated research.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the optical element of the vehicle lamp at a first viewing angle
  • FIG. 2 is a schematic diagram of the three-dimensional structure of the optical element of the vehicle lamp at a second viewing angle
  • Figure 3 is a side view of the optical element of the vehicle light
  • FIG. 4 is a schematic cross-sectional view of the optical element of the vehicle lamp shown in FIG. 3 along the line B-B;
  • Figure 5 is a top view of the optical element of the vehicle lamp
  • FIG. 6 is a schematic cross-sectional view of the optical element of the vehicle lamp shown in FIG. 5 along the line A-A;
  • Fig. 7 is an enlarged schematic diagram of part P in Fig. 6;
  • Figure 8 is a front view of the optical element of the vehicle lamp
  • Figure 9 is a schematic diagram of the structure of the car light module
  • FIG. 10 is a schematic diagram of the direction of light in the vehicle lamp module shown in FIG. 9;
  • Figure 11 is a schematic diagram of the structure of a vehicle headlamp
  • Fig. 12 is a schematic diagram of the light shape of the vehicle headlamp shown in Fig. 11 applied.
  • Car light optical element 1 Car light module 2
  • Vehicle headlight 3 Light entrance part 10
  • Lamp body 30 Light source 20 Lamp body 30
  • the existing vehicle lamp module is affected by the accuracy of the parts of the primary optical element and the secondary optical element and the accuracy of the installation position, and its optical system is difficult to adjust and the system accuracy error is large.
  • the first embodiment of the present invention A vehicle light optical element is provided, and the vehicle light optical element is used in a vehicle light module.
  • the “front” and “rear” mentioned below correspond to the “front” and “rear” directions of the vehicle in normal driving, and the lighting area of the vehicle lights is in the front.
  • the “up” and “down” are the same as the “up” and “down” directions of the optical element in Figure 3, that is, the “up” and “down” directions of the lights when the car is running normally;
  • “front” , “Rear”, “left”, and “right” correspond to the directions of "front”, “rear”, “left”, and “right” in Figure 5 respectively, that is, the front, rear, left, and right directions of the lights when the car is running normally.
  • the direction of light emission is from “back” to "front”.
  • the first embodiment of the present invention provides an optical element 1 for a vehicle lamp.
  • the optical element 1 for a vehicle lamp is integrally formed, and is provided with a light incident portion 10, a light transmission portion 11, and a light output portion.
  • the rear end and the front end of the light transmission part 11 along the light output direction are the light input end and the light output end, respectively.
  • the light incident part 10 includes at least one light incident structure 13 arranged at the light incident end of the light transmission part 11 and corresponding to the light source.
  • the light incident part 10 is used to guide the light emitted by the light source through the light incident structure 13 Light transmission unit 11.
  • the light transmission part 11 is used to collect the incident light introduced through the light entrance part 10 and the reflected light reflected by the sidewall of the light transmission part 11 and propagate it to the light exit part.
  • the light exit portion includes a light exit surface 12 protruding from the light exit end of the light transmission portion 11 toward the light exit direction, and the light exit portion refracts light through the exit surface 12 to form a high beam.
  • the vehicle lamp optical element 1 has a central axis, which is a straight line extending along the light-emitting direction to pass the apex of the light-emitting surface, wherein the apex of the light-emitting surface is the light-emitting surface 12 shown in FIG. The point of tangency to the vertical plane of the direction.
  • the length along the transverse direction and/or the length along the longitudinal direction gradually increase, that is, the length along the left and right directions shown in FIG. 5 and/or the length shown in FIG.
  • the cross section is a cross section perpendicular to the central axis of the vehicle light optical element 1.
  • the AA cross-section of the vehicle light optical element 1 is a fan shape expanding from the light entrance portion 10 to the light exit surface 12, that is, the light transmission portion 11 extends from the light entrance end to the light exit
  • the cross section of the end gradually increases in length in the up and down direction. Therefore, the shape of the vehicle lamp optical element 1 is a cone structure with a smaller rear end and a larger front end.
  • the rear end of the cone structure is set as the light entrance portion 10, and the front end convexly convex surface is the light exit surface 12.
  • the light energy introduced through the light entrance part 10 is better collected by the light transmission part 11 and projected onto the light exit surface 12.
  • the volume of the vehicle light optical element 1 can be adaptable To shrink.
  • the vehicle light optical element 1 selects an optical material with good light guiding performance.
  • the material of the vehicle light optical element 1 is transparent silica gel, glass, and optical plastics such as PMMA or PC.
  • the light incident structures 13 are arranged in a matrix at the light incident end of the light transmission portion 11, and the light incident structures 13 are arranged in at least one row on the light incident end of the light transmission portion 11.
  • the light incident structure 13 is arranged in one row, two rows or multiple rows at the light incident end of the light transmission part 11.
  • the light incident structure 13 is a cone protruding from the light entrance end of the light transmission part 11 toward the light source, and the top of each cone corresponds to the light source.
  • the light entrance end of the light transmission part 11 is provided with a row of 5 light entrance structures 13 in total.
  • the light entrance structures 13 are quadrangular pyramids protruding from the light entrance end of the light transmission part 11 toward the light source.
  • the top of the quadrangular pyramid protrudes toward the direction of the light source, and the sides of the quadrangular pyramid can be flat or curved.
  • the bottom edges of two adjacent quadrangular pyramids are connected, or two adjacent quadrangular pyramids are arranged at intervals.
  • each quadrangular pyramid corresponds to the installation position of the light source
  • the light emitting center of the light source corresponds to the top of the quadrangular pyramid
  • the light source is preferably placed at the focal point of the light incident structure 13.
  • each light entrance structure 13 and the light exit surface 12 of the light exit portion form a lenticular lens structure in the light exit direction, and the light emitted by the light source is collected by the light transmission portion 11 and collimated by the light exit surface 12 and then projected forward , Form the corresponding light shape in the illuminated area.
  • the volume of the vehicle light optical element 1 is related to the number of light sources to be installed, and the volume of the vehicle light optical element 1 becomes less adaptable as the number of light sources decreases.
  • the light incident structure 13 of the light incident portion 10 may be a flat structure, or a condensing bowl formed in the light incident portion 10 that is recessed toward the light exit direction may be used as the light incident structure 13.
  • the light-emitting surface 12 of the light-emitting portion may be a complete curved surface, or as shown in FIGS. 7 and 8, it is a curved structure formed by continuous splicing of a plurality of convex lens surfaces.
  • the upper surface appears as a grid-like surface.
  • the light exit surface 12 of the light exit portion can be regarded as a continuous smooth curved surface formed by a plurality of smooth convex lens curved surfaces connected by curvature.
  • Each convex lens curved surface can be used to diverge the light to expand the illumination area.
  • the boundary of the light-emitting surface 12 can be trimmed to any suitable shape according to customer requirements.
  • the boundary shape of the light exit surface 12 is a parallelogram.
  • the light transmission part 11 includes side walls for connecting the light entrance part 10 and the light exit surface 12.
  • the side walls of the light transmission part 11 are continuous in the circumferential direction. Curved surface, and extinction lines are arranged on the continuous surface.
  • the side wall of the light transmission part 11 is formed by splicing a plurality of side faces 14, and each side face 14 is parallel or at an angle with the central axis of the light transmission part 11. In this embodiment In this manner, at least one side surface 14 of the light transmission portion 11 is provided with a matting pattern.
  • the matting lines are skin textures or matting teeth, so that the surface of the side wall of the light transmission part 11 is rough or uneven, thereby reducing the light directly emitted from the side wall of the light transmission part 11 or passing through the light transmission part.
  • the stray light formed after reflection on the sidewall of 11 improves the light-gathering ability of the light transmission part 11.
  • the matte teeth are several grooves recessed inward from the surface of the side surface of the light transmission portion 11.
  • the light entrance part is smaller than the light exit part, the light introduced from the light entrance part can be well collected by the light transmission part and projected to the light exit part; , Since the light entrance part and the light exit part are arranged on the same optical structure, there is no need to build a light path or install other unnecessary supporting devices, which simplifies the structure of the vehicle light optical element, thereby making the manufacturing precision of the vehicle light optical element high; In three aspects, the volume of the optical components of the car light can be adaptively reduced when the light distribution requirements are met, which is conducive to integrated research.
  • the second embodiment of the present invention provides a vehicle lamp module 2.
  • the vehicle lamp module 2 includes a light source circuit board and the aforementioned vehicle light optical element 1.
  • the light source circuit board is arranged on the vehicle light optical element 1 is behind the light incident portion 10, and each light source 20 on the light source circuit board corresponds to the light incident structure 13 of the vehicle light optical element 1 one to one.
  • the vehicle lamp module 2 is also provided with structures such as a radiator and a heat dissipation bracket for supporting the light source circuit board and the lamp optical element 1 and providing heat dissipation functions (not shown in FIG. 9).
  • each light source 20 on the light source circuit board can be independently controlled to turn on and off.
  • the vehicle light optical element 1 is used to divide the high beam lighting area into a number of lighting units equal to the number of light sources 20, and the brightness of each lighting unit is individually controlled by the corresponding light source 20.
  • the size of the light-emitting surface 12 of the vehicle light optical element 1 is also reduced accordingly.
  • the vehicle light provided in this embodiment In the optical element 1 the opening size of the light-emitting surface 12 is about 20 mm high and about 10 mm wide, which is much smaller than the lens opening size of the current Matrix headlight module, and can be adapted to more diverse vehicle lamp shapes.
  • the light incident structure 13 can also be arranged in multiple rows in the vertical direction along the light transmission portion 11. When each light incident structure 13 is correspondingly installed with a light source 20, the illumination area of the vehicle lamp module 2 can be arranged in multiple rows.
  • Matrix matrix light shape the figure only shows a single-row matrix light shape formed by 5 light incident structures 13 and their light sources 20.
  • the light source 20 is an LED light source or a laser light source.
  • the vehicle light module has a simple and compact structure, low cost, simple assembly relationship, and The external dimensions can also be adaptively reduced.
  • the accuracy of the optical system of the lamp module is only related to the assembly accuracy between the lamp optical component and the light source, so the dimming difficulty is small.
  • the optical system precision error of the module is small.
  • the third embodiment of the present invention provides a vehicle headlamp 3, which is installed on the head of the vehicle to illuminate the driving area in front of the vehicle and improve the visibility of the driver to road conditions.
  • the vehicle headlamp 3 includes a lamp body 30 and at least one vehicle lamp module 2 installed in the lamp body.
  • the plurality of vehicle lamp modules 2 may be integrally arranged, or may be dispersedly arranged in the lamp body 30.
  • three vehicle lamp modules 2 are scattered in the lamp body 30 of the vehicle headlamp 3, which together form a Matrix headlamp.
  • the vehicle headlight 3 provided with 3 vehicle light modules 2 has a total of 15 LED light sources, that is, 15 illumination pixels.
  • the high-beam lighting area of the vehicle headlight 3 is divided into 15 lighting units, and the brightness of each lighting unit is individually controlled by the corresponding LED light source.
  • the LED light source corresponding to the lighting unit where the obstacle is located is turned off, so that the The area where the lighting unit is located is dimmed to prevent other road users from dazzling and improve driving safety.
  • adjacent lighting units partially overlap at the boundary position to avoid too sharp field of view boundary.
  • the fourth embodiment of the present invention provides a vehicle with the above-mentioned vehicle headlamp 3 installed on the vehicle.

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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)

Abstract

一种车辆照明技术领域中的车灯光学元件（1），该车灯光学元件（1）包括入光部（10）、光传输部（11）和出光部；光传输部（11）上沿出光方向的两端分别为入光端和出光端；入光部（10）包括设置在光传输部（11）的入光端并与光源（20）对应的至少一个入光结构（13）；出光部包括从光传输部（11）的出光端向出光方向凸设的出光面（12）；光传输部（11）从入光端到出光端的横截面面积逐渐增大。由于车灯光学元件（1）的入光部（10）和出光部设置在同一光学结构上，无需搭建光路，装配关系简单，从而简化了车灯光学元件（1）的结构，提高了车灯光学元件（1）的光学***精度。

Description

一种车灯光学元件、车灯模组、车辆前照灯和车辆 技术领域
本发明涉及车辆照明技术领域，具体涉及一种车灯光学元件、车灯模组、车辆前照灯和车辆。
背景技术
车辆前照灯中通常设置有车灯模组，车灯模组是指单独或组合使用的、能够实现车辆的不同照明功能的装置或单元，例如，Matrix矩阵式前照灯模组，即能够将远光照明区域细分为多个照明区域的车灯模组，实现ADB自适应远光功能，可根据路况自适应地变换远光光型，对车辆前方的目标物进行遮蔽，避免道路其他使用者炫目，提高驾驶安全。
现有车灯模组中通常设置有初级光学元件(比如反射镜、光导)和次级光学元件(比如透镜)，通过初级光学元件和次级光学元件的配合，实现远近光切换。专利申请CN107664295A公开了一种车用光学模组，适用于矩阵式大灯，设置有作为初级光学元件的准直透镜以及作为次级光学元件的二级透镜。专利申请CN109611780A公开了一种机动车远光照明模组，适用于矩阵式大灯，包括安装有聚光器的电路板，且该聚光器位于由电路板、透镜支架和透镜形成容置腔内，其中，聚光器为该模组的初级光学元件，透镜为该模组的次级光学元件。
由于现有车灯模组中的组成零件较多，导致车灯模组的装配关系复杂，受初级光学元件和次级光学元件本身的零件制造精度以及总成装配精度的影响，现有车灯模组存在装配复杂、调光困难且光学***精度误差较大等问题。
发明内容
本发明的目的是克服现有车灯模组装配复杂、调光困难且光学***精度误差较大的问题，提供了一种车灯光学元件，应用于车灯模组中。
为了实现上述目的，本发明第一方面提供一种车灯光学元件，所述车灯光学元件包括入光部、光传输部和出光部；
所述光传输部上沿出光方向的后端和前端分别为入光端和出光端；
所述入光部包括设置在所述光传输部的入光端并与光源对应的至少一个入光结构；
所述出光部包括从所述光传输部的出光端向出光方向凸设的出光面；
所述光传输部从所述入光端到出光端的横截面面积逐渐增大。
优选地，所述入光结构在所述光传输部的入光端呈矩阵式排列；
所述入光结构在所述光传输部的入光端端面上设置为至少一排。
优选地，所述入光结构为由所述光传输部的入光端向着光源方向凸出的椎体；
每个所述椎体的顶部与光源对应；
每个所述入光结构与所述出光部的出光面在出光方向上构成双凸透镜结构。
优选地，所述出光部的出光面是由若干个凸透镜面连续拼接成的曲面结构。
优选地，所述光传输部从入光端到出光端的横截面上，沿横向方向的长度和/或沿纵向方向的长度逐渐增大；
所述光传输部包括连接其入光端与出光端的侧壁；
所述侧壁是由多个侧面拼接成的拼接面，所述侧面为平面或曲面；
每个所述侧面与所述光传输部的中心轴平行或呈一夹角。
优选地，所述光传输部的至少一个侧面上设置有消光纹，所述消光纹为皮纹或消光齿。
本发明第二方面提供一种车灯模组，所述车灯模组包括散热器、散热支架、光源电路板以及上述的车灯光学元件；
所述光源电路板设置在所述车灯光学元件的入光部后方，且所述光源电路板上的光源与所述车灯光学元件的入光结构一一对应；
所述光源电路板上的每个光源能被独立控制亮灭；
所述车灯光学元件用于将远光的照明区域分割成与光源数量相等的若干个照明单元，每个照明单元的明暗通过对应的光源单独控制。
优选地，所述光源为LED光源或激光光源。
本发明第三方面提供一种车辆前照灯，所述车辆前照灯包括灯体和安装在所述灯体内的至少一个上述的车灯模组；
当所述车灯模组为多个时，多个所述车灯模组一体设置或分散设置于灯体内。
本发明第四方面提供一种车辆，所述车辆上设置有上述的车辆前照灯。
在上述技术方案提供的车灯光学元件中，由于入光部与出光部设置在同一光学结构上，无需搭建光路，也无需安装其他不必要的支撑装置，装配关系简单，提高了车灯光学元件的零件制造精度和光学***精度，同时，车灯光学元件的体积在满足配光要求条件时能适应性缩小，有利于集成化研究。
附图说明
图1是车灯光学元件在第一视角下的立体结构示意图；
图2是车灯光学元件在第二视角下的立体结构示意图；
图3是车灯光学元件的侧视图；
图4是图3所示的车灯光学元件沿B-B线的剖面示意图；
图5是车灯光学元件的俯视图；
图6是图5所示的车灯光学元件沿A-A线的剖面示意图；
图7是图6中的P部放大示意图；
图8是车灯光学元件的前视图；
图9是车灯模组的结构示意图；
图10是图9所示的车灯模组内的光线走向示意图；
图11是车辆前照灯的结构示意图；
图12是应用图11所示的车辆前照灯的光形示意图。
附图标记说明
车灯光学元件1           车灯模组2
车辆前照灯3             入光部10
光传输部11              出光面12
入光结构13              侧面14
光源20                  灯体30
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
现有的车灯模组受初级光学元件和次级光学元件的零件精度和安装位置精度的影响，其光学***调节困难且***精度误差较大，为解决上述技术问题，本发明第一实施例提供了一种车灯光学元件，该车灯光学元件应用于车灯模组中。
为叙述方便，下文中所述的“前”、“后”对应于车辆正常行驶的“前”、“后”方向，车灯的照明区域在前。所述的“上”、“下”与附图3中的光学元件的“上”、“下”方向一致，也即汽车正常行驶时车灯的“上”、“下”方向；“前”、“后”、“左”、“右”分别对应附图5的“前”、“后”、“左”、“右”方向，也即汽车正常行驶时车灯的前后左右方向，车灯的出光方向为从“后” 向“前”。
请参阅图1至图8，本发明第一实施例提供了一种车灯光学元件1，车灯光学元件1一体成型，其上设置有包括入光部10、光传输部11和出光部。光传输部11上沿出光方向的后端和前端分别是入光端和出光端。
如图2所示，入光部10包括设置在光传输部11的入光端并与光源对应的至少一个入光结构13，入光部10用于通过入光结构13将光源发出的光导入光传输部11。光传输部11用于收集经入光部10导入的入射光以及经光传输部11的侧壁反射的反射光，并将其传播到出光部。出光部包括从光传输部11的出光端向出光方向凸设的出光面12，出光部通过该出光面12对光进行折射后形成远光。
根据本发明一个优选的实施方式，车灯光学元件1有一中心轴，该中心轴为沿出光方向延伸至经过出光面顶点的直线，其中，出光面顶点为图3所示的出光面12与上下方向的竖直平面相切的切点。在光传输部11从入光端到出光端的横截面上，沿横向方向的长度和/或沿纵向方向的长度逐渐增大，也即沿图5所示左右方向的长度和/或图3所示上下方向的长度逐渐增大，使得光传输部11从入光端到出光端的横截面面积逐渐增大，该横截面为垂直于车灯光学元件1的中心轴的截面。示例性地，如图5和图6所示，该车灯光学元件1的A-A向断面是由入光部10向出光面12扩开的扇形，也即光传输部11从入光端到出光端的横截面在上下方向的长度逐渐增大。因此，车灯光学元件1的外形是一个后端较小、前端较大的锥体结构，该锥体结构的后端设置为入光部10，前端向外凸出的曲面为出光面12，使得经入光部10导入的光能更好地被光传输部11收集并投射到出光面12上，同时，在满足出光面12出光要求的前提下，车灯光学元件1的体积可以适应性地缩小。
在本发明中，车灯光学元件1选择导光性能良好的光学材料，可选地，该车灯光学元件1的材料为透明的硅胶、玻璃，以及光学塑料如PMMA或 PC等。
根据本发明一个优选的实施方式，入光结构13在光传输部11的入光端呈矩阵式排列，入光结构13在光传输部11的入光端端面设置为至少一排。可选地，入光结构13在光传输部11的入光端设置为一排、两排或多排。
根据本发明一个优选的实施方式，入光结构13为由光传输部11的入光端向着光源方向凸出的椎体，每个椎体的顶部与光源对应。如图2所示，光传输部11的入光端设置有一排共5个入光结构13，该入光结构13为自光传输部11的入光端向光源方向凸出的四棱锥，该四棱锥的顶部向着光源方向凸出，四棱锥的侧面可以为平面或曲面。相邻两个所述四棱锥的底部边缘相接，或者，相邻两个所述四棱锥间隔设置。在本实施方式中，每个所述四棱锥的顶部与光源的安装位置对应，光源的发光中心与四棱锥的顶部对应，光源优选放置在入光结构13的焦点处。需要说明的是，每个入光结构13与出光部的出光面12在出光方向上构成双凸透镜结构，通过光传输部11将光源发出的光进行收集并经出光面12准直后向前投影，在照明区域形成对应的光形。
需要说明的是，车灯光学元件1的体积与待安装的光源数量有关，车灯光学元件1的体积随光源数量的减少而适应性变小。可选地，本发明中还可以设置入光部10的入光结构13为平面结构，或者入光部10中向着出光方向凹陷形成的聚光碗作为入光结构13。
根据本发明一个优选的实施方式，出光部的出光面12可以是一个完整的曲面，或者如图7和图8所示，是由若干个凸透镜面连续拼接成的曲面结构，该出光面12整体上呈现为网格状曲面。在本实施方式中，出光部的出光面12可以看成是由多个光滑的凸透镜曲面通过曲率连接形成的一个连续光滑的曲面。每一个凸透镜曲面都可以用于对光进行发散，以扩大照明区域。
在满足出光要求的情况下，根据客户需求将出光面12的边界可修剪为任何合适的形状。例如，如图8所示，出光面12的边界形状为平行四边形。
在本发明中，光传输部11包括用于连接入光部10与出光面12的侧壁，根据本发明一个优选的实施方式，光传输部11的侧壁是一个在周向方向上连续的曲面，且该连续面上设置有消光纹。或者，根据本发明另一个优选的实施方式，光传输部11的侧壁由多个侧面14拼接而成，每个侧面14与光传输部11的中心轴平行或呈一夹角，在本实施方式中，光传输部11的至少一个侧面14上设置有消光纹。
较佳地，所述消光纹为皮纹或消光齿，使得光传输部11的侧壁表面粗糙或高低不平，从而减少从光传输部11的侧壁直接射出的光，或是经光传输部11的侧壁反射后形成的杂散光，提高光传输部11的聚光能力。示例性的，该消光齿为从光传输部11侧面的表面向内凹陷的若干凹槽。
在本发明实施例提供的车灯光学元件中，一方面，由于入光部较出光部小，从入光部导入的光能很好地被光传输部收集并投射到出光部；第二方面，由于入光部与出光部设置在同一光学结构上，无需搭建光路，也无需安装其他不必要的支撑装置，简化了车灯光学元件的结构，从而使得车灯光学元件的制造精度高；第三方面，车灯光学元件的体积在满足配光要求条件时能适应性缩小，有利于集成化研究。
如图9所示，本发明第二实施例提供了一种车灯模组2，该车灯模组2包括光源电路板以及上述的车灯光学元件1，光源电路板设置在车灯光学元件1的入光部10后方，且光源电路板上的每个光源20与车灯光学元件1的入光结构13一一对应。该车灯模组2上还设置有用于对光源电路板和车灯光学元件1提供支撑、散热功能的散热器、散热支架等结构(图9中未示出)。
如图10所示，由光源20发出的光经入光部10射入上述车灯光学元件1后，由光传输部11收集并传播到出光部，出光部的出光面12对光进行准 直后向前射出，投影成与光源20数量对应的Matrix矩阵大灯光形。根据本发明一种优选的实施方式，光源电路板上的每个光源20能被独立控制亮灭。车灯光学元件1用于将远光照明区域分割成与光源20数量相等的若干个照明单元，每个照明单元的明暗通过对应的光源20单独控制。
在本实施例中，由于车灯光学元件1的体积随光源20数量的减少而适应性变小，车灯光学元件1的出光面12尺寸也相应减小，例如在本实施例提供的车灯光学元件1中，出光面12的开口尺寸高约20毫米，宽约10毫米，相比目前Matrix矩阵大灯模组的透镜开口尺寸小很多，可以适应更丰富多样的车灯造型。另外，入光结构13也可以沿光传输部11在上下方向设置为多排，当每个入光结构13对应安装有光源20时，在车灯模组2的照明区域可以形成多排设置的Matrix矩阵光形，图中仅示意出了由5个入光结构13及其光源20形成的单排矩阵光形。
在本实施方式中，光源20为LED光源或激光光源。
在本实施例中，每个车灯模组中只需设置光源、车灯光学元件和必要的支撑装置，因此车灯模组结构简单、紧凑，成本低廉，装配关系简单，车灯模组的外形尺寸也可以适应性缩小。同时，在保证车灯光学元件的零件制造精度符合要求的情况下，该车灯模组的光学***精度只与车灯光学元件和光源之间的装配精度有关，因而调光难度小，车灯模组的光学***精度误差小。
本发明第三实施例提供了一种车辆前照灯3，车辆前照灯3安装在车辆的头部，用于对车辆前方的行驶区域照明，提高驾驶员对路况的可视性。如图11所示，该车辆前照灯3包括灯体30和安装在该灯体内的至少一个车灯模组2。当车辆前照灯3中安装有多个车灯模组2时，该多个所述车灯模组2可一体设置，或者分散设置于灯体30内。图11中所示为车辆前照灯3的灯体30中分散设置有3个车灯模组2，共同构成Matrix矩阵大灯。
示例性的，当每个车灯模组2中LED光源的数量为5个，设置有3个 上述车灯模组2的车辆前照灯3总共有15个LED光源，即15个照明像素，车辆前照灯3的远光照明区域被分割为15个照明单元，每个照明单元的明暗通过对应的LED光源单独进行控制。如图12所示，当车辆的行驶路线上出现其他车辆或行人等障碍物时，通过调节车辆前照灯3的远光光型，将与障碍物所在照明单元对应的LED光源关闭，使得该照明单元所在区域变暗，防止其他道路使用者炫目，提高驾驶安全性。同时，为保证整个远光视场区域的光学均匀性，相邻照明单元在边界位置有部分重叠，以避免出现过于尖锐的视场边界。
本发明第四实施例提供了一种车辆，该车辆上设置上述车辆前照灯3。
以上详细描述了本发明的优选实施方式，但是，本发明并不限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，包括各个技术特征以任何其它的合适方式进行组合，这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。

Claims (10)

  1. 一种车灯光学元件，其特征在于，所述车灯光学元件包括入光部、光传输部和出光部；
    所述光传输部上沿出光方向的后端和前端分别为入光端和出光端；
    所述入光部包括设置在所述光传输部的入光端并与光源对应的至少一个入光结构；
    所述出光部包括从所述光传输部的出光端向出光方向凸设的出光面；
    所述光传输部从入光端到出光端的横截面面积逐渐增大。
  2. 根据权利要求1所述的车灯光学元件，其特征在于，所述入光结构在所述光传输部的入光端呈矩阵式排列；
    所述入光结构在所述光传输部的入光端端面上设置为至少一排。
  3. 根据权利要求1所述的车灯光学元件，其特征在于，所述入光结构为由所述光传输部的入光端向着光源方向凸出的椎体；
    每个所述椎体的顶部与光源对应；
    每个所述入光结构与所述出光面在出光方向上构成双凸透镜结构。
  4. 根据权利要求1所述的车灯光学元件，其特征在于，所述出光部的出光面是由若干个凸透镜面连续拼接成的曲面结构。
  5. 根据权利要求1所述的车灯光学元件，其特征在于，所述光传输部从入光端到出光端的横截面上，沿横向方向的长度和/或沿纵向方向的长度逐渐增大；
    所述光传输部包括连接其入光端与出光端的侧壁；
    所述侧壁是由多个侧面拼接成的拼接面，所述侧面为平面或曲面；
    其中，每个所述侧面与所述光传输部的中心轴平行或呈一夹角。
  6. 根据权利要求5所述的车灯光学元件，其特征在于，所述光传输部的至少一个侧面上设置有消光纹，所述消光纹为皮纹或消光齿。
  7. 一种车灯模组，其特征在于，所述车灯模组包括散热器、散热支架、光源电路板以及如权利要求1-6任意一项所述的车灯光学元件；
    所述光源电路板设置在所述车灯光学元件的入光部后方，且所述光源电路板上的光源与所述车灯光学元件的入光结构一一对应；
    所述光源电路板上的每个光源能被独立控制亮灭；
    所述车灯光学元件用于将远光的照明区域分割成与光源数量相等的若干个照明单元，每个照明单元的明暗通过对应的光源单独控制。
  8. 根据权利要求7所述的车灯模组，其特征在于，所述光源为LED光源或激光光源。
  9. 一种车辆前照灯，其特征在于，所述车辆前照灯包括灯体和安装在所述灯体内的至少一个如权利要求7或8所述的车灯模组；
    当所述车灯模组为多个时，多个所述车灯模组一体设置或分散设置于灯体内。
  10. 一种车辆，其特征在于，所述车辆上设置有如权利要求9所述的车辆前照灯。
PCT/CN2019/104606 2019-06-05 2019-09-06 一种车灯光学元件、车灯模组、车辆前照灯和车辆 WO2020244080A1 (zh)

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