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WO2020244109A1 - 近光iii区照明模组、车辆前照灯及车辆 - Google Patents

近光iii区照明模组、车辆前照灯及车辆 Download PDF

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Publication number
WO2020244109A1
WO2020244109A1 PCT/CN2019/110504 CN2019110504W WO2020244109A1 WO 2020244109 A1 WO2020244109 A1 WO 2020244109A1 CN 2019110504 W CN2019110504 W CN 2019110504W WO 2020244109 A1 WO2020244109 A1 WO 2020244109A1
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WO
WIPO (PCT)
Prior art keywords
light
mirror
reflector
low
iii
Prior art date
Application number
PCT/CN2019/110504
Other languages
English (en)
French (fr)
Inventor
仇智平
祝贺
Original Assignee
华域视觉科技(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 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 US17/271,837 priority Critical patent/US11608956B2/en
Priority to JP2021518511A priority patent/JP6955131B1/ja
Priority to DE112019004392.7T priority patent/DE112019004392T5/de
Publication of WO2020244109A1 publication Critical patent/WO2020244109A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • 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

Definitions

  • the invention relates to a vehicle lamp lighting module, in particular to a low beam III zone lighting module, and in addition, to a vehicle headlight and a vehicle.
  • optical elements of transparent materials have been increasingly used in vehicle headlamp lighting devices such as low beam or high beam.
  • vehicle headlamp lighting devices such as low beam or high beam.
  • transparent optical elements Due to the comprehensive advantages of high light efficiency, simple system configuration, and low system cost, they are used in vehicle headlight lighting devices such as low beam or high beam.
  • the application gradually increases, forming a development trend of headlamp lighting device technology.
  • the low beam of the car lights is for close-range lighting.
  • the low beam has an important part called "zone III", which is located at the cut-off line Above, it mainly illuminates the objects located above the road such as signs, so that the driver can obtain information such as signs.
  • AFS Adaptive Headlight System
  • the narrower such as ⁇ 10° zone III light shape in the left and right directions cannot meet the requirements of the standard and the needs of practical applications.
  • AFS can continuously dynamically adjust the headlights according to the car steering wheel angle, vehicle yaw rate and driving speed, adapt to the current steering angle, and keep the light direction consistent with the current driving direction of the car to ensure the best lighting for the road ahead, and Provide the best visibility to the driver, thereby significantly enhancing the safety of driving in the dark; in poor road lighting or multi-curved road conditions, the driver's field of vision can be expanded, and the opponent can be alerted in advance.
  • BLL involves the left side -8° ⁇ -20°
  • BRR involves the right side +8° ⁇ +20°, which makes the light shape of zone III at least ⁇ 20° left and right;
  • zone III If the light shape of zone III does not shift, the light shape of zone III is required to cover a certain width (if AFS rotates 10°, the light shape of zone III needs to reach 30 ° in order to meet the regulations); (3) From the perspective of practical applications, it is also necessary for the light shape of zone III to have sufficient width, for the illumination of sufficient width above the low beam cut-off line, and for the sufficient illumination of zone III under the vehicle AFS function. Improve the visibility of road information for drivers.
  • a low-beam illuminating device with a transparent material optical element with a certain length of light channel is used to form the low-beam III zone structure as a corresponding III zone formation structure provided on this optical element, however, It still cannot effectively increase the width of the light shape in zone III.
  • the application date is August 17, 2016, and the publication number is CN106122870B.
  • the Chinese invention patent discloses an LED light source and near beam integrated vehicle light module.
  • the technical solution for forming the low beam III zone is: A secondary reflector is set. Part of the light reflected by the secondary reflector is reflected and refracted by the condenser (that is, the transparent material optical element) and then exits from the lens to form a low beam III zone.
  • the III zone on the condenser forms a structure. Above the condenser body, it receives the light reflected from the reflector arranged behind the LED light source, passes through the III area to form a structure, and enters the lens after being emitted from the light exit surface, and finally forms the III area light shape, and the left and right width of the formed III area light shape About ⁇ 10°, it cannot meet the corresponding lighting requirements of Zone III when the vehicle is turning, and cannot meet the requirements of the AFS regulations for vehicle headlights.
  • the technical problem to be solved in the first aspect of the present invention is to provide a low-beam zone III lighting module, which can effectively expand the width of the light shape of the zone III.
  • the technical problem to be solved in the second aspect of the present invention is to provide a vehicle headlamp, which not only can effectively expand the width of the light shape of zone III, but also can meet the standard requirements and practical requirements of the adaptive front lighting system for automobiles. Application requirements.
  • the technical problem to be solved by the third aspect of the present invention is to provide a vehicle which can still provide good performance in the turning range when the low beam cut-off part is shifted left and right and the light shape of zone III is not shifted when turning. Zone III lighting.
  • the first aspect of the present invention provides a low-beam zone III lighting module including a light source and a lens, and also includes a transparent optical element and a low-beam zone III forming mechanism; the light source, the low-beam zone III forming mechanism, and a transparent
  • the optical elements and lenses are arranged in sequence along the light path forming the light shape of the low beam III zone;
  • the low beam III zone forming mechanism includes at least one first reflector and at least one second reflector, the first reflector and the second reflector
  • the mirrors are distributed on both sides of the optical axis of the lens and arranged in a staggered arrangement.
  • the light source is located at the first focal point of the first mirror, and the second focal point of the first mirror is connected to the second mirror.
  • the first focus of the second reflector coincides, the second focus of the second mirror is set on the light incident surface of the transparent optical element, and the lens is located directly in front of the light exit surface of the transparent optical element.
  • the transparent optical element includes the light incident surface, the light exit surface, an upper surface and a lower surface, and the light incident surface, the upper surface, the lower surface and the light exit surface enclose a light channel.
  • the light incident surface is set to be a flat surface or a concave or convex arc surface
  • the upper surface is set to be a flat surface or a concave or convex arc surface
  • the light exit surface is set to be concave at the center and convex at both ends. Arcuate.
  • At least one of the light-incident surface, the upper surface, and the light-emitting surface is provided with skin grains.
  • the first mirror and the second mirror are configured as ellipsoidal mirrors.
  • the low beam III zone forming mechanism includes a first reflector and a second reflector, the first reflector and the second reflector are distributed on both sides of the optical axis of the lens,
  • the light source is located at the first focal point of the first mirror, the second focal point of the first mirror coincides with the first focal point of the second mirror, and the second focal point of the second mirror
  • the two focal points are arranged on the light incident surface of the transparent optical element, and the lens is located directly in front of the light exit surface of the transparent optical element, so as to be able to expand the widening of one side of the light shape of the low beam III zone.
  • the low beam III zone forming mechanism includes two first reflecting mirrors and two second reflecting mirrors, and the two first reflecting mirrors and the two second reflecting mirrors are respectively arranged symmetrically in the The two sides of the optical axis of the lens, wherein the second focus of the first mirror located on one side of the optical axis of the lens and the second focus of the second mirror located on the other side of the optical axis of the lens
  • the first focal point coincides
  • the first focal points of the two first mirrors coincide
  • the light source is located at the first focal point of the first mirror
  • the second focal point of each second mirror is set on the transparent
  • the lens is located directly in front of the light-emitting surface of the transparent optical element, so as to be able to expand the widening on both sides of the light shape of the low beam III zone.
  • the first focus of the low beam reflector is set at the light source.
  • each of the first reflectors, each of the second reflectors, and the low beam reflector is mounted on the heat sink or is integrally formed with the heat sink.
  • a second aspect of the present invention provides a vehicle headlamp, which includes the low beam zone III lighting module according to any one of the technical solutions of the first aspect.
  • a third aspect of the present invention provides a vehicle, including the vehicle headlamp described in the technical solution of the second aspect.
  • the light emitted by the light source is reflected by the first reflector and the second reflector into the transparent optical element, and then exits through the light exit surface and the lens of the transparent optical element.
  • the mirrors are distributed on both sides of the optical axis of the lens, and are arranged in a shifted front and back.
  • the light emitted through the lens produces a certain large-angle propagation direction change in the left and right directions, so that the light shape of the low beam III zone is in the
  • the illumination range in the left and right directions becomes larger, that is, the width of the light shape of the low beam III area is enlarged.
  • the shape of the light incident surface of the transparent optical element can be set to a flat surface or a concave or convex curved surface.
  • the curved surface can diffuse light
  • the shape of the upper surface can also be set to be flat or concave or convex. It can reflect the light incident on the light incident surface; in particular, the light exit surface of the transparent optical element is set as a curved surface with concave and convex ends at the center.
  • This arrangement makes the angle of the outer light emitted from the light exit surface of the transparent optical element more divergent. It is more conducive to forming a wide-angle, wide-range light shape of zone III.
  • At least one of the light incident surface, the upper surface, and the light exit surface of the transparent optical element may be provided with skin texture, which functions to cause diffuse reflection of light and reduce the energy of light irradiated to the effective area, thereby adjusting the low beam
  • the function of the lighting intensity of zone III is to meet the requirements of car lights.
  • the general regulations require that the maximum lighting intensity of zone III is less than 625cd (candela), that is to say, 625cd corresponds to 1lx (lux) on the 25m light distribution screen.
  • the low-beam zone III lighting module of the present invention is applied to vehicle headlights, especially AFS headlights, so that when the vehicle turns, the low-beam cut-off part is shifted left and right, and the light shape of zone III does not shift. , Can still provide good zone III lighting in the turning range.
  • Figure 1 is a schematic diagram of a low beam light shape in the prior art
  • Figure 2 is a three-dimensional schematic diagram of an embodiment of the present invention.
  • FIG. 3 is another three-dimensional structural diagram of an embodiment of the present invention.
  • Figure 4 is a three-dimensional schematic diagram of another embodiment of the present invention.
  • Figure 5 is a three-dimensional schematic diagram of another embodiment of the present invention.
  • Figure 6 is a side view of the structure in Figure 4.
  • Figure 7 is a top view of the structure in Figure 4.
  • FIG. 8 is a schematic diagram of a three-dimensional structure of the transparent optical element of the present invention.
  • Fig. 9 is another three-dimensional schematic diagram of the transparent optical element of the present invention.
  • FIG. 10 is a schematic diagram of a light direction and a light shape of an embodiment of the present invention.
  • Figure 11 is a three-dimensional schematic diagram of another embodiment of the present invention.
  • FIG. 12 is a schematic diagram of the light direction and the light shape of FIG. 11.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the terms “first” and “second” The feature of “two” may explicitly or implicitly include one or more of the features.
  • the terms “installation” and “setting” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or Integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a communication between two elements or an interaction relationship between two elements.
  • installation and “setting” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or Integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a communication between two elements or an interaction relationship between two elements.
  • the technical solution of the Chinese invention patent with the filing date of August 17, 2016 and the announcement number CN106122870B cannot expand the width of the light shape in Zone III because if the width of the light shape in Zone III is to be increased, it corresponds to Zone III.
  • the imaging angle range of the light at the cut-off line structure needs to reach the corresponding width range, otherwise it will not be able to form a larger width after being projected by the lens, and the light shape of the III zone reflected by the secondary reflector in the above technical solution is from directly behind
  • the structure is formed by entering the III zone on the condenser, which makes the angle of the incident light limited to a certain small angle range.
  • the III zone forming structure extends from back to front to the concave light exit set at the focal point of the lens
  • the light shape of zone III is basically concentrated in the middle of the optical axis, and the expandable angle range is limited.
  • the light-emitting surface of the concave structure makes the left and right expansion of the light further restricted, so that the light entering the lens cannot be formed.
  • the formed zone III has a narrower width in the left-right direction.
  • the light exit end is “front”
  • the light entrance end is “rear”
  • the left side along the light exit direction is “left”
  • the right side along the light exit direction is “right”
  • the upper side along the light exit direction is “up”
  • the bottom along the light exit direction is “down”.
  • the low beam III zone lighting module in the basic technical solution of the present invention includes a light source 1, a lens 2, a transparent optical element 3, and a low beam III zone forming mechanism; the light source 1, near The light III zone forming mechanism, the transparent optical element 3 and the lens 2 are arranged in sequence along the light path forming the light shape of the low beam III zone;
  • the low beam III zone forming mechanism includes at least one first reflecting mirror 4 and at least one second reflecting mirror 5.
  • the first reflecting mirror 4 and the second reflecting mirror 5 are distributed on the optical axis of the lens 2
  • the two sides are arranged in a staggered arrangement, that is, the first reflector 4 is located in front of the corresponding second reflector 5, the second reflector 5 is located behind the transparent optical element 3, and the light source 1 is located at the first reflector 4
  • the second focus of the first mirror 4 coincides with the first focus of the second mirror 5, and the second focus of the second mirror 5 is set on the transparent optical element 3.
  • the light incident surface 31, so that the second reflector 5 is located behind the light incident surface 31 of the transparent optical element 3, and the lens 2 is located directly in front of the light output surface 32 of the transparent optical element 3.
  • the light source 1 is located at the first focal point of the first mirror 4, the second focal point of the first mirror 4 coincides with the first focal point of the second mirror 5, and the second focal point of the second mirror 5
  • the two focal points are set on the light incident surface 31 of the transparent optical element 3; the reason why the corresponding optical elements are set at the focal point is to efficiently use the light energy, because the light at the focal point is the most concentrated, that is,
  • the above technical solutions do not indicate that the corresponding optical elements are strictly aligned with the focus, but may also have a small amount of deviation to adjust the shape and intensity of the illumination.
  • a small amount of deviation refers to a millimeter-level distance deviation. Specifically, a small amount of deviation is generally Within 5mm.
  • the formation mechanism of the low beam III zone there are at least two ways for the formation mechanism of the low beam III zone.
  • One is to include only a first reflector 4 and a second reflector 5, so that the single-sided width of the light shape of the low beam III zone can be enlarged.
  • the other is to include two first mirrors 4 and two second mirrors 5, so that the double-sided width of the light shape of the low beam III zone can be enlarged; and the first mirror 4 and the corresponding second reflector
  • the mirrors 5 may be arranged facing each other, that is, the reflecting surface of the first reflecting mirror 4 and the reflecting surface of the corresponding second reflecting mirror 5 are arranged facing each other, so that the light received by the reflecting surface of the first reflecting mirror 4 After being reflected, it can be directed to the reflecting surface of the second reflecting mirror 5 through the first focal point of the corresponding second reflecting mirror 5, and finally a large-angle and wide-range low-beam zone III light shape is formed.
  • the light emitted by the light source 1 is first reflected by the first reflector 4, and then exits from the second focus of the first reflector 4. Because the second focus of the first reflector 4 and the second focus of the second reflector 5 A focal point coincides, the light is reflected by the second mirror 5, and exits from the second focal point of the second mirror 5.
  • the second focal point of the second mirror 5 is set on the light incident surface 31 of the transparent optical element 3, so the light is emitted Enter the transparent optical element 3, and then exit through the light exit surface 32 of the transparent optical element 3, and finally exit through the lens 2 to form a low-beam zone III light shape.
  • the light emitted through the lens 2 produces a certain large-angle propagation direction change in the left and right unilateral or bilateral directions, so that the low beam III zone light
  • the illumination range of the shape in the left and right unilateral or bilateral directions becomes larger, that is, the width of the light shape in the low beam III zone is enlarged.
  • the transparent optical element 3 includes the light incident surface 31, the light output surface 32, an upper surface 33, and a lower surface 34.
  • the surface 31, the upper surface 33, the lower surface 34 and the light exit surface 32 enclose a light channel 35.
  • the transparent optical element 3 is made of transparent material, has high light efficiency, can make the system structure simple and the system cost is low.
  • the shape of the light incident surface 31 can be set as a flat surface or a concave or convex arc surface, which can diffuse light, and the upper surface 33 is set as a flat surface or a concave or convex arc surface, which can reflect the light incident on the light incident surface 31.
  • the light-emitting surface 32 is set as a curved surface with concave and convex ends at the center, so that the angle of the outer light emitted from the light-emitting surface 32 of the transparent optical element 3 is more divergent, which is more conducive to forming a large-angle and wide-range low beam III District lighting.
  • the dermatoglyph is a granular microstructure with irregular shapes. Its function is to make the light diffusely reflect, reduce the energy of the light irradiated to the effective area, and thus play the role of adjusting the lighting intensity of the low beam III zone to meet the requirements of the car lights. Regulatory requirements (general regulations require that the maximum lighting intensity in Zone III is ⁇ 625cd).
  • the first mirror 4 and the second mirror 5 are configured as ellipsoidal mirrors. It is understandable that, in the specific embodiment, the characteristics of the ellipsoidal mirror are mainly used: the light emitted from or passing through any one focal point is converged to another focal point after passing through the ellipsoidal mirror; moreover, those skilled in the art It should be conceivable that the first reflector 4 and the second reflector 5 can also be car light reflectors that can achieve the above-mentioned functions in the prior art, such as a bifocal parabolic reflector, as long as any one of the focal points of the reflector emits or passes through the The light from the focal point can be collected to another focal point after passing through the mirror.
  • the low beam III zone forming mechanism may include a first reflector 4 and a second reflector 5.
  • the first reflector 4 And the second reflecting mirror 5 are distributed on both sides of the optical axis of the lens 2 and arranged in a staggered arrangement, that is, the first reflecting mirror 4 is located in front of the second reflecting mirror 5, and the second reflecting mirror 5 is located in the transparent optical element 3.
  • the light source 1 is located at the first focus of the first reflector 4, the second focus of the first reflector 4 coincides with the first focus of the second reflector 5, and the second reflector
  • the second focus of the mirror 5 is set on the light-incident surface 31 of the transparent optical element 3, and the lens 2 is located directly in front of the light-emitting surface 32 of the transparent optical element 3 to enable the light emitted by the light source 1 to pass through the first
  • the optical path composed of a reflecting mirror 4, a second reflecting mirror 5 and a transparent optical element 3 achieves the effect of expanding the light shape of the low beam III zone on one side.
  • the low beam III zone forming mechanism may include two first mirrors 4 and two second mirrors 5, and two The first reflecting mirror 4 and the two second reflecting mirrors 5 are respectively arranged symmetrically on both sides of the optical axis of the lens 2, wherein the first reflecting mirror located on one side of the optical axis of the lens 2
  • the second focus of the mirror 4 coincides with the first focus of the second mirror 5 located on the other side of the optical axis of the lens 2
  • the first mirror 4 is located in front of the corresponding second mirror 5, two
  • the first focus of the first reflecting mirror 4 coincides
  • the light source 1 is located at the first focus of the first reflecting mirror 4, and the second focus of each second reflecting mirror 5 is set on the transparent optical element 3
  • the lens 2 is located directly in front of the light output surface 32 of the transparent optical element 3 to enable the light emitted by the light source 1 to pass through the first reflector 4, the second reflector 5 and the transparent optical element
  • a person of ordinary skill in the art can integrate an optical shape similar to the low-beam main body shown in FIGS. 2, 3, and 11 based on the above technical solutions.
  • the module is used for the illumination of vehicle headlights.
  • a low beam reflector 6 can be provided in the above technical solution, so that the first focus of the low beam reflector 6 is set on the light source 1. In this way, the low-beam light shape 001 and the large-angle, wide-range zone III light shape can be obtained at the same time.
  • the cut-off line forming structure can be directly arranged at the upper boundary of the light exit surface 32 of the transparent optical element 3, so as to form a low beam shape 001 with a cut-off line; of course, other methods of forming the cut-off line can also be used.
  • a radiator may also be included, so that each of the first reflectors 4, each of the second reflectors 5, and the low beam reflector 6 can be mounted on the radiator, or be combined with the radiator.
  • One-piece molding for easy production and assembly.
  • the low-beam zone III lighting module of the preferred embodiment of the present invention includes a light source 1, a lens 2, a transparent optical element 3, and a low-beam zone III forming mechanism; the light source 1, near The light III zone forming mechanism, the transparent optical element 3 and the lens 2 are sequentially arranged along the light path forming the light shape of the low beam III zone; the low beam III forming mechanism includes at least one first reflector 4 and at least one second reflector 5, which is understandable However, there are at least two ways for the formation mechanism of the low beam III zone, which only includes a first reflector 4 and a second reflector 5.
  • the first reflector 4 and the second reflector 5 are distributed on the lens 2
  • the first mirror 4 is located in front of the corresponding second mirror 5, the light source 1 is located at the first focus of the first mirror 4, and the first The second focus of the reflector 4 coincides with the first focus of the second reflector 5, the second focus of the second reflector 5 is set on the light incident surface 31 of the transparent optical element 3, and the lens 2 is located at the The transparent optical element 3 is directly in front of the light-emitting surface 32; or, the low beam III zone forming mechanism includes two first reflecting mirrors 4 and two second reflecting mirrors 5, two first reflecting mirrors 4 and two The second mirrors 5 are respectively arranged symmetrically on both sides of the optical axis of the lens 2, wherein the second focus of the first mirror 4 located on one side of the optical axis of the lens 2 is The first focus of the second mirror 5 on the other side of the optical axis of the lens 2 coincides, the first mirror 4 is located in front of the corresponding second mirror 5, and the two first mirrors 4 The first focus
  • the upper surface 33 can be set as a flat surface or a concave or convex arc surface, which can reflect the light incident on the light incident surface 31, and the light exit surface 32 can be set as a convex arc surface with concave and convex ends in the middle.
  • the angle of the outer light emitted from the light-emitting surface 32 of the transparent optical element 3 is more divergent, which is more conducive to forming a large-angle and wide-range light shape of the low beam III zone; further, it can be on the light-incident surface 31, the upper surface 33 and One or more surfaces of the light-emitting surface 32 are provided with dermatoglyphs.
  • the low-beam reflector 6 can make the module produce a low-beam light shape 001, According to the needs of the design, the radiator and the first reflector 4, the second reflector 5 and the low beam reflector 6 can be detachably mounted together, or integrally formed to facilitate production and assembly.
  • the radiator can be air-cooled Radiator, water-cooled radiator, heat pipe radiator and many other types.
  • FIGS. 2 to 12 the working process of the low beam III zone lighting module of the present invention is described.
  • the light emitted by the light source 1 is first reflected by the first reflector 4 and exits from the second focus of the first reflector 4. Since the second focus of the first reflector 4 coincides with the first focus of the second reflector 5, the light is then Reflected by the second reflector 5, the second focal point of the second reflector 5 is emitted, and the second focal point of the second reflector 5 is set on the light incident surface 31 of the transparent optical element 3, so the light enters the transparent optical element 3 , Part of the light is reflected by the upper surface 33 and then irradiated to the light-emitting surface 32, another part of the light is directly irradiated to the light-emitting surface 32 through the light channel 35, the light is emitted through the light-emitting surface 32 of the transparent optical element 3, and finally is emitted through the lens 2 to form a low beam III Zone light shape; due to the relative optical position relationship between the first mirror 4 and the second mirror 5, and the optical position relationship between the second mirror 5 and the transparent optical element 3, the light
  • the illumination intensity of the low beam III zone can be adjusted to reduce the light exposure.
  • the energy of the effective area meets the requirements of vehicle lights; in addition, a low beam reflector 6 can be provided so that the first focus of the low beam reflector 6 is located at the light source 1. In this way, the light reflected by the low beam reflector 6 can form Low beam light shape 001.
  • the area III illumination range formed by the prior art is shown by the small angle III area light shape 002, which is generally ⁇ 10° in the left and right directions; however, refer to Figures 10 and 12 It can be seen that in the technical solution of the present invention, the large-angle and wide-range zone III light shape is relative to the prior art. It can be seen from FIG.
  • the embodiment of the vehicle headlamp of the present invention may have the low beam III zone lighting module described in any of the above embodiments, that is, all the technical solutions of the above low beam III zone lighting module embodiments are adopted, and therefore at least All the beneficial effects brought by the technical solutions of the above-mentioned low-beam zone III lighting module embodiments; the low-beam zone III lighting module and vehicle headlamps of the present invention are particularly suitable for the low-beam zone III lighting of AFS headlights.
  • the first reflector 4, the second reflector 5, and the low beam reflector 6 can be integrated with the radiator to facilitate production and assembly.
  • the low beam zone III lighting module of the present invention is applied to the AFS vehicle headlights, so that when the vehicle is turning, the low beam cut-off part is shifted left and right, and the light shape of zone III is not shifted, and it can still provide turning Good zone III lighting within the range.
  • the vehicle of the present invention may have the vehicle headlamp described in the foregoing embodiment, and at least have all the beneficial effects brought about by the technical solution of the foregoing vehicle headlamp embodiment.
  • the aforementioned vehicle headlights are applied to vehicles, that is to say, the low beam zone III lighting module of the present invention is applied to vehicles, especially headlights with AFS function; when the vehicle is turning , When the low beam cut-off part shifts left and right and the light shape of zone III does not shift, it can still provide good zone III lighting within the turning range, so that the driver can better obtain road information such as signs.
  • the description with reference to the terms “specific embodiment”, “preferred embodiment”, “a preferred embodiment” etc. means that the specific feature, structure, material or characteristic described in combination with the embodiment or example is included in In at least one embodiment or example of the present invention.
  • the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

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Abstract

一种近光III区照明模组，包括光源（1）、透镜（2）、透明光学元件（3）和近光III区形成机构；光源（1）、近光III区形成机构、透明光学元件（3）和透镜（2）沿近光III区光形形成光路依次设置；近光III区形成机构包括至少一个第一反射镜（4）和至少一个第二反射镜（5），第一反射镜（4）和第二反射镜（5）分布于透镜（2）的光轴的两侧，且错位排列，光源（1）位于第一反射镜（4）的第一焦点，第一反射镜（4）的第二焦点与第二反射镜（5）的第一焦点重合，第二反射镜（5）的第二焦点设置于透明光学元件（3）的入光面（31），透镜（2）位于透明光学元件（3）的出光面（32）的正前方。还公开了一种车辆前照灯和车辆，能够有效扩大III区光形的宽度。

Description

近光III区照明模组、车辆前照灯及车辆 技术领域
本发明涉及车灯照明模组，具体地，涉及一种近光III区照明模组，此外，还涉及一种车辆前照灯和车辆。
背景技术
在车灯技术领域，相比传统的仅设置表面镀铝的反射镜的光学元件，近些年，透明材质的光学元件在近光或远光等车辆前照灯照明装置中的应用越来越多，特别是具有一定长度光通道的透明材质光学元件，由于具有光效高、系统构成简单、系统成本较低等综合优点，使其在近光或远光等车辆前照灯照明装置中的应用逐渐增多，形成前照灯照明装置技术的一个发展趋势。
车灯的近光，是为了近距离照明，根据车灯相关的标准(以中国标准GB25991为例)可知，近光光形中具有被称为“III区”的重要组成部分，它位于截止线上方，主要对标志牌等位于路面上方的物体起到照明作用，使驾驶员获取标志牌等信息。
对于要求AFS(自适应前大灯系统)功能的前照灯而言，左右方向上较窄(比如±10°)的III区光形不能满足标准的要求以及实际应用的需求。AFS能够根据汽车方向盘角度、车辆偏转率和行驶速度，不断对大灯进行动态调节，适应当前的转向角，保持灯光方向与汽车的当前行驶方向一致，以确保对前方道路提供最佳照明，并对驾驶员提供最佳可见度，从而显著增强了黑暗中驾驶的安全性；在路面照明差或多弯道的路况中，扩大驾驶员的视野，而且可提前提醒对方来车。实现AFS功能的前照灯的技术方案中，有一种方式是通过近光截止部光形左右移动、而III区光形固定不动实 现的，这使得III区在左右方向上必须有足够的宽度，这是因为：(1)以中国的AFS法规GB T30036为例，III区中有BLL和BRR两个测试位置，BLL涉及左侧-8°～-20°，BRR涉及右侧+8°～+20°，这就使得III区光形要做到至少左右±20°；(2)AFS大灯在车辆左右旋转时，近光截止部光形会向转弯相应的方向偏移一定的角度(比如10°)，而此时也要满足AFS的法规，那么III区光形不偏移的话，就要求III区光形能够覆盖一定的宽度(AFS旋转10°的话，III区光形需要到达30°才能满足法规)；(3)从实际应用角度而言，也需要III区光形具有足够的宽度，用于近光截止线上方足够宽度的照明，以及车辆AFS功能下的III区足够照明，提高驾驶员的道路信息可视性。
在现有技术中，采用具有一定长度光通道的透明材质光学元件的近光照明装置，其用于形成近光III区的结构为设置于这种光学元件上相应的III区形成结构，但是，仍然不能有效地增大III区光形的宽度。例如，申请日为2016年8月17日、公告号为CN106122870B的中国发明专利，该专利公开了一种LED光源远近光一体车灯模组，其用于形成近光III区的技术方案为：设置二级反射镜，二级反射镜反射的部分光线经聚光器(即透明材质光学元件)反射和折射后从透镜射出，形成近光III区，聚光器上的III区形成结构设置于聚光器本体上方，接收来自设置于LED光源后方的反射镜反射的光线，经过III区形成结构，经出光面射出后进入透镜，最终形成III区光形，形成的III区光形的左右宽度约±10°，不能够满足车辆转弯时III区相应的照明需求，不能够满足AFS法规对车辆前照灯的要求。
因此，本技术领域亟需提供一种新的技术方案，用于解决上述现有技术中III区左右照明角度较窄的技术问题。
发明内容
本发明第一方面要解决的技术问题是提供一种近光III区照明模组，该 近光III区照明模组能够有效扩大III区光形的宽度。
本发明第二方面要解决的技术问题是提供一种车辆前照灯，该车辆前照灯不仅能够有效扩大III区光形的宽度，还能够满足汽车用自适应前照明系统的标准要求及实际应用的需求。
此外，本发明第三方面要解决的技术问题是提供一种车辆，该车辆在转弯时，近光截止部左右偏移、III区光形不偏移时，仍能提供转弯范围内的良好的III区照明。
为了实现上述目的，本发明第一方面提供一种近光III区照明模组包括光源和透镜，还包括透明光学元件和近光III区形成机构；所述光源、近光III区形成机构、透明光学元件和透镜沿近光III区光形形成光路依次设置；所述近光III区形成机构包括至少一个第一反射镜和至少一个第二反射镜，所述第一反射镜和所述第二反射镜分布于所述透镜的光轴的两侧，且错位排列，所述光源位于所述第一反射镜的第一焦点，所述第一反射镜的第二焦点与所述第二反射镜的第一焦点重合，所述第二反射镜的第二焦点设置于所述透明光学元件的入光面，所述透镜位于所述透明光学元件的出光面的正前方。
优选地，所述透明光学元件包括所述入光面、所述出光面、上表面和下表面，所述入光面、上表面、下表面和所述出光面围成光通道。
进一步地，所述入光面设置为平面或内凹或外凸的弧面，所述上表面设置为平面或内凹或外凸的弧面，所述出光面设置为中间凹两端凸的弧面。
更优选地，所述入光面、上表面、出光面中至少一个表面上设置有皮纹。
典型地，所述第一反射镜和第二反射镜设置为椭球面反射镜。
具体优选地，所述近光III区形成机构包括一个第一反射镜和一个第二反射镜，所述第一反射镜和所述第二反射镜分布于所述透镜的光轴的两侧，且错位排列，所述光源位于所述第一反射镜的第一焦点，所述第一反射镜 的第二焦点与所述第二反射镜的第一焦点重合，所述第二反射镜的第二焦点设置于所述透明光学元件的入光面上，所述透镜位于所述透明光学元件的出光面的正前方，以能够扩大近光III区光形单侧的展宽。
具体优选地，所述近光III区形成机构包括两个第一反射镜和两个第二反射镜，两个所述第一反射镜和两个所述第二反射镜分别对称地布置于所述透镜的光轴的两侧，其中，位于所述透镜的光轴的一侧的所述第一反射镜的第二焦点与位于所述透镜的光轴的另一侧的第二反射镜的第一焦点重合，两个所述第一反射镜的第一焦点重合，且所述光源位于该第一反射镜的第一焦点，各所述第二反射镜的第二焦点设置于所述透明光学元件的入光面上，所述透镜位于所述透明光学元件的出光面的正前方，以能够扩大近光III区光形两侧的展宽。
典型地，还包括近光反射镜，所述近光反射镜的第一焦点设置于所述光源。
典型地，还包括散热器，各所述第一反射镜、各所述第二反射镜和所述近光反射镜安装于所述散热器上，或者与所述散热器一体成型。
本发明第二方面提供一种车辆前照灯，包括上述第一方面的技术方案中任一项所述的近光III区照明模组。
本发明第三方面提供一种车辆，包括上述第二方面的技术方案所述的车辆前照灯。
通过上述技术方案，本发明的有益效果如下：
在本发明的基础技术方案中，光源发出的光线依次经过第一反射镜和第二反射镜反射进入透明光学元件，再经由透明光学元件的出光面和透镜出射，由于第一反射镜和第二反射镜分布与透镜光轴的两侧，且前后错位排布，相对现有技术，使得经由透镜出射的光线在左右方向上产生一定的大角度传播方向变化，从而使得近光III区光形在左右方向上的照明范围变大，即扩大了近光III区光形的宽度。
其中，透明光学元件的入光面的形状可以设置为平面或内凹或外凸的弧面，弧面能够对光线进行扩散，上表面的形状也可以设置为平面或内凹或外凸，都能够对入光面入射的光线进行反射；特别是，透明光学元件的出光面设置为中间凹两端凸的弧面，这样的设置使得从透明光学元件的出光面出射的外侧光线角度更发散，更有利于形成大角度、宽范围的近光III区光形。
另外，透明光学元件的入光面、上表面、出光面中至少一个表面上可以设置有皮纹，其作用是使光线产生漫反射，降低光照射到有效区域的能量，从而起到调整近光III区照明强度的作用，以满足车灯的法规要求，一般法规要求III区的最大照明强度＜625cd(坎德拉)，也就是说，625cd对应于25m配光屏上就是1lx(勒克斯)照度。
而且，将本发明的近光III区照明模组应用到车辆前照灯后，特别是AFS前照灯，使得车辆在转弯时，近光截止部左右偏移、III区光形不偏移时，仍能提供转弯范围内的良好的III区照明。
有关本发明的其他优点以及优选实施方式的技术效果，将在下文的具体实施方式中进一步说明。
附图说明
图1是现有技术的近光光形示意图；
图2是本发明的一个实施例的一个立体结构示意图；
图3是本发明的一个实施例的另一个立体结构示意图；
图4是本发明的另一个实施例的立体结构示意图；
图5是本发明的另一个实施例的立体结构示意图；
图6是图4中结构的侧视图；
图7是图4中结构的俯视图；
图8是本发明中透明光学元件的一个立体结构示意图；
图9是本发明中透明光学元件的另一个立体结构示意图；
图10是本发明一个实施例的光线走向图及光形示意图；
图11是本发明的另一个实施例的立体结构示意图；
图12是图11的光线走向图及光形示意图。
附图标记说明
1 光源                          2 透镜
3 透明光学元件                  31 入光面
32 出光面                       33 上表面
34 下表面                       35 光通道
4 第一反射镜                    5 第二反射镜
6 近光反射镜
001 近光光形                    002 小角度III区光形
003 右侧大角度III区光形         004 左侧大角度III区光形
具体实施方式
下面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。
术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性或隐含指明所指示的技术特征的数量，因此，限定有“第一”、“第二”的特征可以明示或隐含地包括一个或更多个所述特征。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“设置”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或者是一体连接；可以是直接连接，也可以是通过中间媒介间接连接，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的 具体含义。
申请日为2016年8月17日、公告号为CN106122870B的中国发明专利的技术方案之所以不能够扩大III区光形的宽度，是因为如果要使得III区光形的宽度增大，对应III区的光线在截止线结构处的成像角度范围需要达到相应的宽度范围，否则经透镜投射后不能够形成较大的宽度，而上述技术方案中二级反射镜反射的III区光形是从正后方射入聚光器上III区形成结构的，这就使得入射光的角度局限在了一定的较小角度范围内，而且，III区形成结构由后向前延伸于设置在透镜焦点处的凹状出光面，III区光形基本上是集中于光轴中间位置传播的，可扩展的角度范围受到局限，凹状结构的出光面使得光线的左右扩展又受到进一步限制，使得射入透镜的光线不能够形成较宽的角度范围，形成的III区在左右方向上的宽度较窄。
首先需要说明的是，为了便于理解，如图2所示，基于透镜2的光轴，光线出射端为“前”，光线入射端为“后”，沿光线出射方向的左侧为“左”，沿光线出射方向的右侧为“右”，沿光线出射方向的上方为“上”，沿光线出射方向的下方为“下”，需要理解的是，术语为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
参照图2至图12所示，本发明的基础技术方案中的近光III区照明模组，包括光源1、透镜2、透明光学元件3和近光III区形成机构；所述光源1、近光III区形成机构、透明光学元件3和透镜2沿近光III区光形形成光路依次设置；
所述近光III区形成机构包括至少一个第一反射镜4和至少一个第二反射镜5，所述第一反射镜4和所述第二反射镜5分布于所述透镜2的光轴的两侧，且错位排列，即第一反射镜4位于相对应的第二反射镜5的前方，第二反射镜5位于透明光学元件3的后方，所述光源1位于所述第一反射 镜4的第一焦点，所述第一反射镜4的第二焦点与所述第二反射镜5的第一焦点重合，所述第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31，从而第二反射镜5位于透明光学元件3的入光面31的后方，所述透镜2位于所述透明光学元件3的出光面32的正前方。
其中，需要说明的是，光源1位于所述第一反射镜4的第一焦点，第一反射镜4的第二焦点与第二反射镜5的第一焦点重合，第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31；之所以将相应的光学元件设置于焦点处，是为了高效利用光的能量，因为焦点处的光线是最集中的，也就是说，上述技术方案中并不是指示相应的光学元件严格和焦点重合设置，也可以具有少量偏差，以起到调整照明光形和强度的作用，少量偏差指毫米级的距离偏差，具体地，少量偏差一般在5mm以内。
可以理解的是，近光III区形成机构至少存在两种方式，一种是仅包括一个第一反射镜4和一个第二反射镜5，这样，可以扩大近光III区光形的单侧宽度；另一种是包括两个第一反射镜4和两个第二反射镜5，这样，可以扩大近光III区光形的双侧宽度；而且，第一反射镜4和对应的第二反射镜5可以相互面向对方设置，也就是说，第一反射镜4的反射面与对应的第二反射镜5的反射面相互面向对方设置，这样，第一反射镜4的反射面接收到的光线被反射后，就可以经由对应的第二反射镜5的第一焦点射向该第二反射镜5的反射面，最终形成大角度、宽范围的近光III区光形。
在上述技术方案中，光源1发出的光线先经由第一反射镜4反射，由第一反射镜4的第二焦点出射，由于第一反射镜4的第二焦点与第二反射镜5的第一焦点重合，光线再经由第二反射镜5反射，由第二反射镜5的第二焦点出射，第二反射镜5的第二焦点设置于透明光学元件3的入光面31，因此光线射入透明光学元件3内，再经由透明光学元件3的出光面32出射，最终经由透镜2出射形成近光III区光形，其中，由于第一反射镜4与第二反射镜5相对光学位置关系，以及结合第二反射镜5与透明光学元 件3的光学位置关系，使得经由透镜2出射的光线在左右单侧或双侧方向上产生一定的大角度传播方向变化，从而使得近光III区光形在左右单侧或双侧方向上的照明范围变大，即扩大了近光III区光形的宽度。
参照图2至图9所示，在本发明的具体实施例中，所述透明光学元件3包括所述入光面31、所述出光面32、上表面33和下表面34，所述入光面31、上表面33、下表面34和所述出光面32围成光通道35。透明光学元件3由透明材质制备而成，具有光效高，能够使得系统构成简单、系统成本较低。
参照图2至图9所示，在本发明的优选实施例中，所述入光面31的形状可以设置为平面或内凹或外凸的弧面，能够对光线进行扩散，所述上表面33设置为平面或内凹或外凸的弧面，能够对入光面31入射的光线进行反射，针对上述入光面31和上表面33的形状，本技术领域的普通技术人员可以根据设计需要进行选择，所述出光面32设置为中间凹两端凸的弧面，使得从透明光学元件3的出光面32出射的外侧光线角度更发散，更有利于形成大角度、宽范围的近光III区照明。
在优选实施例中，所述入光面31、上表面33、出光面32中至少一个表面上设置有皮纹。其中，皮纹是形状不规则的颗粒状微结构，其作用是使光线产生漫反射，降低光照射到有效区域的能量，从而起到调整近光III区照明强度的作用，以满足车灯的法规要求(一般法规要求III区的最大照明强度＜625cd)。
在具体实施例中，所述第一反射镜4和第二反射镜5设置为椭球面反射镜。可以理解的是，在具体实施例中，主要利用椭球面反射镜的特点：任意一个焦点发出或通过该焦点的光，经椭球面反射镜后都汇聚到另一个焦点；而且，本领域技术人员应该能够想到，第一反射镜4和第二反射镜5也可以采用现有技术中能够实现上述功能的车灯反射镜，例如双焦点抛物面反射镜，只要反射镜的任意一个焦点发出或通过该焦点的光，经该反射 镜后都汇聚到另一个焦点即可。
参照图2至图10所示，在本发明的一个优选实施例中，所述近光III区形成机构可以包括一个第一反射镜4和一个第二反射镜5，所述第一反射镜4和所述第二反射镜5分布于所述透镜2的光轴的两侧，且错位排列，即第一反射镜4位于第二反射镜5的前方，第二反射镜5位于透明光学元件3的后方，所述光源1位于所述第一反射镜4的第一焦点，所述第一反射镜4的第二焦点与所述第二反射镜5的第一焦点重合，所述第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31上，所述透镜2位于所述透明光学元件3的出光面32的正前方，以能够使得光源1发出的光线经由第一反射镜4、第二反射镜5和透明光学元件3组成的光路，达到扩大近光III区光形单侧的展宽的效果。
参照图11和图12所示，在本发明的另一个优选实施例中，所述近光III区形成机构可以包括两个第一反射镜4和两个第二反射镜5，两个所述第一反射镜4和两个所述第二反射镜5分别对称地布置于所述透镜2的光轴的两侧，其中，位于所述透镜2的光轴的一侧的所述第一反射镜4的第二焦点与位于所述透镜2的光轴的另一侧的第二反射镜5的第一焦点重合，第一反射镜4位于相对应的第二反射镜5的前方，两个所述第一反射镜4的第一焦点重合，且所述光源1位于该第一反射镜4的第一焦点，各所述第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31上，所述透镜2位于所述透明光学元件3的出光面32的正前方，以能够使得光源1发出的光线经由第一反射镜4、第二反射镜5和透明光学元件3组成的光路，再经由透镜2出射，得到左右方向上的大角度、宽范围III区光形，以达到扩大近光III区光形两侧的展宽的目的。
参照图2、图3、图10至图12所示，典型地，本技术领域的普通技术人员可以基于上述技术方案集成类似图2、图3、图11所示的近光主体光形的光学模组用于车辆前照灯的照明，具体地，可以在上述技术方案中设 置近光反射镜6，使近光反射镜6的第一焦点设置于所述光源1。如此，就可以同时得到近光光形001和大角度、宽范围III区光形。此外，截止线形成结构可以直接设置在透明光学元件3的出光面32的上边界处，从而能够形成具有截止线的近光光形001；当然，也可以采用其它形成截止线的方式。
典型地，还可以包括散热器，可以使得各所述第一反射镜4、各所述第二反射镜5和所述近光反射镜6安装于所述散热器上，或者与所述散热器一体成型，便于生产和装配。
参照图2至图12所示，本发明的优选实施例的的近光III区照明模组，包括光源1、透镜2、透明光学元件3和近光III区形成机构；所述光源1、近光III区形成机构、透明光学元件3和透镜2沿近光III区光形形成光路依次设置；近光III区形成机构包括至少一个第一反射镜4和至少一个第二反射镜5，可以理解的是，近光III区形成机构至少存在两种方式，仅包括一个第一反射镜4和一个第二反射镜5，第一反射镜4和所述第二反射镜5分布于所述透镜2的光轴的两侧，且错位排列，即第一反射镜4位于相对应的第二反射镜5的前方，所述光源1位于所述第一反射镜4的第一焦点，所述第一反射镜4的第二焦点与所述第二反射镜5的第一焦点重合，所述第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31，透镜2位于所述透明光学元件3的出光面32的正前方；或者，近光III区形成机构包括两个第一反射镜4和两个第二反射镜5，两个所述第一反射镜4和两个所述第二反射镜5分别对称地布置于所述透镜2的光轴的两侧，其中，位于所述透镜2的光轴的一侧的所述第一反射镜4的第二焦点与位于所述透镜2的光轴的另一侧的第二反射镜5的第一焦点重合，第一反射镜4位于相对应的第二反射镜5的前方，两个所述第一反射镜4的第一焦点重合，且所述光源1位于该第一反射镜4的第一焦点，各所述第二反射镜5的第二焦点设置于所述透明光学元件3的入光面31上；经由上述设置，使第一反射镜4、第二反射镜5和透明光学元件3形成一个能够得到大角度、宽范 围III区光形的光路，达到扩大了近光III区左右方向上光形的宽度的效果，其中，第一反射镜4和第二反射镜5可以为椭球面反射镜；而且，透明光学元件3的入光面31的形状可以设置为平面或内凹或外凸的弧面，能够对光线进行扩散，其上表面33可以设置为平面或内凹或外凸的弧面，能够对入光面31入射的光线进行反射，出光面32可以设置为中间凹两端凸的弧面，使得从透明光学元件3的出光面32出射的外侧光线角度更发散，更有利于形成大角度、宽范围的近光III区光形；进一步地，可以在入光面31、上表面33和出光面32中的一个或多个表面上设置有皮纹，利用皮纹对光线产生漫反射的特点，调整近光III区照明强度，降低光照射到有效区域的能量，满足车灯的法规要求；另外，还可以结合本领域技术手段，增加设置近光反射镜6和散热器等，近光反射镜6能够使得模组产生近光光形001，可以根据设计的需要，使散热器与第一反射镜4、第二反射镜5和近光反射镜6可拆分地安装在一起，或者，一体成型，便于生产和装配，散热器可以采用风冷散热器、水冷散热器、热管散热器等多种类型。
参照图2至图12所示，描述本发明的近光III区照明模组的工作过程。
光源1发出的光线先经由第一反射镜4反射，由第一反射镜4的第二焦点出射，由于第一反射镜4的第二焦点与第二反射镜5的第一焦点重合，光线再经由第二反射镜5反射，由第二反射镜5的第二焦点出射，第二反射镜5的第二焦点设置于透明光学元件3的入光面31，因此光线射入透明光学元件3内，一部分光线经上表面33反射后向出光面32照射，另一部分光线经光通道35直接向出光面32照射，光线经由透明光学元件3的出光面32出射，最终经由透镜2出射形成近光III区光形；由于第一反射镜4与第二反射镜5相对光学位置关系，以及结合第二反射镜5与透明光学元件3的光学位置关系，使得经由透镜2出射的光线在左右单侧或双侧方向上产生一定的大角度传播方向变化，从而使得近光III区光形在左右单侧或双侧方向上的照明范围变大，即扩大了近光III区光形的宽度；其中，在入 光面31、上表面33和出光面32中的一个或多个表面上形成有皮纹，利用皮纹对光线产生漫反射的特点，可以调整近光III区照明强度，降低光照射到有效区域的能量，满足车灯的法规要求；另外，可以设置近光反射镜6，使得近光反射镜6的第一焦点位于光源1，如此，经由近光反射镜6反射的光线出射能够形成近光光形001。
需要说明的是，如图1所示，现有技术形成的III区照明范围如小角度III区光形002所示，在左右方向上一般为±10°；然而，参照图10和图12所示，可知，在本发明的技术方案中，大角度、宽范围III区光形是相对现有技术而言的，由图10可以看出本发明的一个实施例实现的是左侧10°右侧30°的大角度的III区照明范围，参见图10中右侧大角度III区光形003所示，但此处并不是指示相应的III区角度是严格到30°，附图中的度数只是左右方向上的大角度、宽范围III区光形的一个示意，可以理解的是还包括其他可能，比如＞30°的角度；另外，也可以进一步得到图12所示的一个实施例的左右两侧方向上均为大角度、宽范围III区光形的情况，参见图12中左侧大角度III区光形004和右侧大角度III区光形003所示，而且，左右两侧方向上的角度并非必须相等，可以根据设计的需要进行设计；其中，所述角度是相对V-V轴所在的0°位置而言的，近光的V-V轴位置是本技术领域的技术人员的公知常识，是经过近光截止线拐点的竖直方向的轴。
本发明的车辆前照灯的实施例可以具有上述任一实施例所述的近光III区照明模组，即采用了上述所有近光III区照明模组实施例的全部技术方案，因此至少具有上述近光III区照明模组实施例的技术方案所带来的所有有益效果；本发明的近光III区照明模组及车辆前照灯尤其适用于AFS前照灯的近光III区照明。
其中，在将近光III区照明模组应用到车辆前照灯中时，可以将第一反射镜4、第二反射镜5和近光反射镜6与散热器一体成型，便于生产和装配。
进一步地，将本发明的近光III区照明模组应用到AFS车辆前照灯中，使得车辆在转弯时，近光截止部左右偏移、III区光形不偏移时，仍能提供转弯范围内的良好的III区照明。
本发明的车辆可以具有上述实施例所述的车辆前照灯，至少具有上述车辆前照灯实施例的技术方案所带来的所有有益效果。
可以理解的是，将上述车辆前照灯应用到车辆中，也就是说，将本发明的近光III区照明模组应用到车辆中，尤其是具有AFS功能的前照灯；车辆在转弯时，近光截止部左右偏移、III区光形不偏移时，仍能提供转弯范围内的良好的III区照明，使驾驶员较好地获取标志牌等路面信息。
在本发明的描述中，参考术语“具体实施例”、“优选实施例”、“一个优选实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本发明中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上结合附图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，包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。但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 (11)

  1. 一种近光III区照明模组，包括光源(1)和透镜(2)，其特征在于，还包括透明光学元件(3)和近光III区形成机构；所述光源(1)、近光III区形成机构、透明光学元件(3)和透镜(2)沿近光III区光形形成光路依次设置；
    所述近光III区形成机构包括至少一个第一反射镜(4)和至少一个第二反射镜(5)，所述第一反射镜(4)和所述第二反射镜(5)分布于所述透镜(2)的光轴的两侧，且错位排列，所述光源(1)位于所述第一反射镜(4)的第一焦点，所述第一反射镜(4)的第二焦点与所述第二反射镜(5)的第一焦点重合，所述第二反射镜(5)的第二焦点设置于所述透明光学元件(3)的入光面(31)，所述透镜(2)位于所述透明光学元件(3)的出光面(32)的正前方。
  2. 根据权利要求1所述的近光III区照明模组，其特征在于，所述透明光学元件(3)包括所述入光面(31)、所述出光面(32)、上表面(33)和下表面(34)，所述入光面(31)、上表面(33)、下表面(34)和所述出光面(32)围成光通道(35)。
  3. 根据权利要求2所述的近光III区照明模组，其特征在于，所述入光面(31)设置为平面或内凹或外凸的弧面，所述上表面(33)设置为平面或内凹或外凸的弧面，所述出光面(32)设置为中间凹两端凸的弧面。
  4. 根据权利要求2所述的近光III区照明模组，其特征在于，所述入光面(31)、上表面(33)、出光面(32)中至少一个表面上设置有皮纹。
  5. 根据权利要求1所述的近光III区照明模组，其特征在于，所述第一反射镜(4)和第二反射镜(5)设置为椭球面反射镜。
  6. 根据权利要求1至5中任一项所述的近光III区照明模组，其特征在于，所述近光III区形成机构包括一个第一反射镜(4)和一个第二反射镜(5)，所述第一反射镜(4)和所述第二反射镜(5)分布于所述透镜(2)的光轴的两侧，且错位排列，所述光源(1)位于所述第一反射镜(4)的第一焦点，所述第一反射镜(4)的第二焦点与所述第二反射镜(5)的第一焦点重合，所述第二反射镜(5)的第二焦点设置于所述透明光学元件(3)的入光面(31)上，所述透镜(2)位于所述透明光学元件(3)的出光面(32)的正前方，以能够扩大近光III区光形单侧的展宽。
  7. 根据权利要求1至5中任一项所述的近光III区照明模组，其特征在于，所述近光III区形成机构包括两个第一反射镜(4)和两个第二反射镜(5)，两个所述第一反射镜(4)和两个所述第二反射镜(5)分别对称地布置于所述透镜(2)的光轴的两侧，其中，位于所述透镜(2)的光轴的一侧的所述第一反射镜(4)的第二焦点与位于所述透镜(2)的光轴的另一侧的第二反射镜(5)的第一焦点重合，两个所述第一反射镜(4)的第一焦点重合，且所述光源(1)位于该第一反射镜(4)的第一焦点，各所述第二反射镜(5)的第二焦点设置于所述透明光学元件(3)的入光面(31)上，所述透镜(2)位于所述透明光学元件(3)的出光面(32)的正前方，以能够扩大近光III区光形两侧的展宽。
  8. 根据权利要求1所述的近光III区照明模组，其特征在于，还包括近光反射镜(6)，所述近光反射镜(6)的第一焦点设置于所述光源(1)。
  9. 根据权利要求8所述的近光III区照明模组，其特征在于，还包括散热器，各所述第一反射镜(4)、各所述第二反射镜(5)和所述近光反射镜(6)安装于所述散热器上，或者与所述散热器一体成型。
  10. 一种车辆前照灯，其特征在于，包括根据权利要求1至9中任一项所述的近光III区照明模组。
  11. 一种车辆，其特征在于，包括根据权利要求10所述的车辆前照灯。
PCT/CN2019/110504 2019-06-04 2019-10-11 近光iii区照明模组、车辆前照灯及车辆 WO2020244109A1 (zh)

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