WO2020010932A1 - Procédé de commande dynamique de feu de véhicule, système associé et feu de véhicule - Google Patents

Procédé de commande dynamique de feu de véhicule, système associé et feu de véhicule Download PDF

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Publication number
WO2020010932A1
WO2020010932A1 PCT/CN2019/088522 CN2019088522W WO2020010932A1 WO 2020010932 A1 WO2020010932 A1 WO 2020010932A1 CN 2019088522 W CN2019088522 W CN 2019088522W WO 2020010932 A1 WO2020010932 A1 WO 2020010932A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
light source
different
dynamic lighting
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Application number
PCT/CN2019/088522
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English (en)
Chinese (zh)
Inventor
张洁
董世琨
张园
周浩
孟凡
Original Assignee
华域视觉科技(上海)有限公司
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Publication date
Priority claimed from CN201810775459.7A external-priority patent/CN109827138B/zh
Priority claimed from CN201821112400.1U external-priority patent/CN209295011U/zh
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
Publication of WO2020010932A1 publication Critical patent/WO2020010932A1/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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters

Definitions

  • the present invention relates to vehicle lights, and in particular, the present invention relates to a dynamic lighting control method and device and vehicle light thereof.
  • the dynamic lighting control method and device and vehicle light thereof simultaneously have a high-light illumination light shape adjustment function and a low-light illumination light shape.
  • the adjustment function more specifically, the dynamic lighting adjustment according to the present invention can switch the light shape between different positions corresponding to the defocus amount of different lenses, and can also continuously change the light shape to achieve different speeds and different speeds. Road conditions, forming different light shapes to improve the lighting effect, ensure driving safety and reduce costs.
  • laser light sources are widely used in vehicle lights.
  • the publication number CN107314324A discloses a high-beam lamp.
  • the patent utilizes the characteristics of a small light source of the laser light source and the concentrated light emitted.
  • the yellow fluorescent plate is excited by a blue laser as a light source, and then the laser reflector and the optical The lens projects light onto the road to achieve the purpose of long distance exposure.
  • the implementation and principle of the above-mentioned high-beam lamp is no different from the traditional projection lighting system, that is, by setting an ellipsoid-like mirror with two focal points, the light source is set at a near focus, and the approximate Lambertian divergence emitted by the light source The light rays are converged to a far focal point through a reflector, the far focal point is set near the focal point of the lens, and the divergent light rays are collimated by the lens and emitted in parallel in a horizontal direction.
  • the inherent defect of the traditional projection lighting system is that the reflectivity of the ellipsoidal mirror generally does not exceed 85%, which results in a decrease in the overall light efficiency of the implementation of the high beam lamp.
  • the existing AFS function only changes the low beam light shape to meet different lighting requirements in different environments and road conditions, and improve driving safety. High beam lighting cannot be changed.
  • the present invention provides a dynamic lighting control method, device and vehicle light thereof.
  • the dynamic lighting control method, device and vehicle light thereof simultaneously have a high-light illumination light shape adjustment function and a low-light illumination light shape adjustment function.
  • the dynamic illumination adjustment according to the present invention can perform jump-type light shape switching between different light shape positions corresponding to different defocus amounts of different lenses, and can also perform continuous conversion of light shape to achieve different speeds and speeds.
  • Different road conditions form different lighting shapes.
  • low-speed driving is suitable for light shapes with a large amount of defocus, as shown in Figure 16, the illumination range is large, but the distance is short.
  • High-speed driving is suitable for the light shape shown in Figure 11 and the lighting distance is long, but the lighting range is small to ensure the purpose of improving light efficiency, driving safety and reducing costs.
  • a dynamic lighting control method for vehicle lights which uses a vehicle light dynamic lighting control system including a light source and a lens, is characterized in that:
  • the light source is an LED light emitting chip surface light source
  • the optical axis of the area light source is aligned with the incident surface of the lens
  • the light passing through the lens is propagated in parallel, forming a light beam shape on the front screen.
  • the surface light source is set in front of or behind the focal point of the lens to form a lens defocus, and the relative position of the surface light source with respect to the lens focal point, that is, the lens defocus amount, is used to realize the change of the front screen light shape, that is, dynamic lighting.
  • the illumination can be changed by adjusting the relative position of the light source relative to the lens focus, that is, the lens defocus amount.
  • Light shape the larger the lens defocus amount, the larger the light spot, and the smaller the Emax value. Therefore, dynamic illumination can be achieved by adjusting the defocus amount of the lens, and at the same time, it can be used to achieve the maximum beam high value (Emax value).
  • the dynamic lighting control method for vehicle lights characterized in that the light source is a rectangular or square LED light emitting chip surface light source, and the lens defocus amount is 0-5mm before or behind the lens focal point,
  • the luminous characteristics of the surface light source are similar to a Lambertian divergence, and the luminous angle ranges from 0 to 90 degrees.
  • the light emission characteristics are shown in FIG. 2.
  • the dynamic illumination light shape can be switched between several different positions corresponding to different lens defocus amounts, and the corresponding dynamic illumination light shapes are jump-type Change to set different light shapes according to different vehicle speeds and road conditions.
  • jump-type switching in different lighting modes such as switching between urban road mode and highway mode.
  • a plurality of lens defocus amounts can be preset, and jump position switching is performed between different lens defocus amounts, and the corresponding light shapes are also jump transitions (as shown in Figures 11 to 16, in Switch between 6 light shapes).
  • the dynamic illumination light shape can be continuously transformed between different positions corresponding to different lens defocus amount presets, and the corresponding dynamic illumination light shapes are also continuous The transformation, that is, the defocus amount is continuously transformed, and the light shape is continuously transformed accordingly.
  • the lens defocus amount is dynamically and continuously transformed, and its corresponding light shape is also continuously changed to avoid human eye discomfort caused by the sudden change of the illumination light shape.
  • Figure 11 shows the light shape of a 1mm * 5mm rectangular light-emitting chip set at the focal point of the lens, which is suitable for high-speed driving. It is characterized by a large Emax value and a long lighting distance, but a small lighting range.
  • Figure 17 shows the light shape of a 1mm * 5mm rectangular light-emitting chip set at a distance of 5mm from the focal point of the lens, which is suitable for urban road conditions. It is characterized by a large illumination range, but the Emax is not high, that is, the irradiation distance is not far.
  • a light emitting chip is provided at a focal point of a lens, and a light shape at the focal point of the lens is suitable for high-speed driving.
  • the technical solution is characterized by a large Emax value and a long lighting distance, but a small lighting range.
  • the dynamic lighting control method for vehicle lights according to the present invention is characterized in that a light emitting chip is provided at a distance of 5 mm from the focal point of the lens, so as to be suitable for urban road lighting.
  • the rectangular light-emitting chip is selected from a rectangular light-emitting chip of 1mm * 1-5mm, and the square light-emitting chip is selected from 1-5mm * 1-5mm.
  • Square light emitting chip is selected from 1mm * 1-5mm.
  • the method for controlling dynamic lighting of a vehicle lamp according to the present invention wherein the rectangular light emitting chip is selected from a rectangular light emitting chip of 1 mm * 5 mm.
  • the dynamic lighting control method for a vehicle lamp according to the present invention is characterized in that a light shielding plate is provided near the surface light source, the light shielding plate is disposed at the focal point of the lens, and the surface light source is disposed behind the light shielding plate, so as to form a light and dark cutoff.
  • Low-beam illumination of a line or part of said low-beam illumination is characterized in that a light shielding plate is provided near the surface light source, the light shielding plate is disposed at the focal point of the lens, and the surface light source is disposed behind the light shielding plate, so as to form a light and dark cutoff.
  • the lens is a convex lens
  • the convex lens is selected from a plano-convex lens, a hyperboloid lens, a Fresnel lens, and a lens group.
  • a dynamic lighting control system includes a light source and a lens, wherein the light source is an LED light emitting chip surface light source,
  • the optical axis of the surface light source is aligned with the incident surface of the lens, and the light emission angle is a hemispherical range of 0 to 90 degrees.
  • the light passing through the lens is propagated in parallel, forming a light beam shape on the front screen.
  • the surface light source is set in front of or behind the focal point of the lens to form a lens defocus, and the relative position of the surface light source with respect to the lens focal point, that is, the lens defocus amount, is used to realize the change of the front screen light shape, that is, dynamic lighting.
  • the lens defocus causes the illumination light shape to diffuse, and the Emax value will decrease, but the illumination range will also increase. Therefore, you can change the illumination light by adjusting the relative position of the light source relative to the lens focus, that is, the lens defocus amount. Shape, the greater the defocus amount of the lens, the larger the light spot, and the smaller the Emax value, the different the defocus amount, the corresponding Emax of the light shape is also different. Therefore, dynamic illumination can be achieved according to the amount of defocus of the lens.
  • the surface light source is set at 0-5 mm in front of or behind the focal point of the lens.
  • the dynamic illumination light shape can be switched between several different positions corresponding to different lens defocus amounts.
  • the corresponding dynamic illumination light shapes are Jumping change to set different light shapes according to different speeds and road conditions.
  • the maximum value of the high beam is lower, but the illumination range is larger.
  • a smaller lens defocus amount or no lens defocus amount is used to achieve a higher maximum value of high beam, so as to achieve the purpose of farther illumination.
  • the dynamic lighting control system for vehicle lights is characterized in that the surface light source is set at 0-5mm in front of or behind the focal point of the lens, corresponding to different positions of the light shape preset for different lens defocus amounts.
  • the illumination light shape can be switched between several different positions corresponding to different lens defocus amounts.
  • the corresponding dynamic illumination light shape is continuously changed to set different illumination light shapes according to different vehicle speeds and road conditions.
  • the maximum value of the high beam is lower, but the illumination range is larger.
  • a smaller lens defocus amount or no lens defocus amount is used to achieve a higher maximum value of high beam, so as to achieve the purpose of farther illumination.
  • a light shielding plate is disposed near the surface light source, the light shielding plate is disposed at the focal point of the lens, and the surface light source is disposed behind the light shielding plate, so as to form a low-light illumination with a cut-off line of light and dark, or a part of the low-light illumination.
  • a vehicle light dynamic lighting control system is provided.
  • the lens is a convex lens, and the convex lens is selected from a plano-convex lens, a hyperboloid lens, a Fresnel lens, and a lens group thereof.
  • a dynamic lighting control system for vehicle lights is used for a headlight headlight.
  • the vehicle light dynamic lighting control system is characterized in that the dynamic lighting system is used for the functions of daytime running lights, position lights, brake lights, turn lights and fog lights.
  • the invention has the following advantages and prominent effects: simple structure, high Eman value can be achieved only by using a full light source in combination with a lens, and a low-light beam is added on the basis of this.
  • the technology of the invention is mature, and the existing LED light sources and lenses can meet the output requirements. High light efficiency, smaller output luminous flux can achieve higher test point test value.
  • FIG. 1 is a schematic diagram of dynamic lighting of a vehicle lamp according to the present invention.
  • Fig. 2 is a schematic diagram showing the relationship between the light intensity and the angle of an LED light emitting chip. The figure illustrates that the light emitting characteristics of a surface light source, such as an LED light emitting chip, are similar to Lambertian divergence.
  • FIG. 3 is a schematic diagram of the simulated light shape of a light source input at 180 lumens.
  • FIG. 4 is a schematic diagram of a measured light shape of a product under a light source input of 180 lumens.
  • FIG. 5 is a schematic diagram of the overall screen illumination of the low beam.
  • FIG. 6 is a partial schematic diagram of the overall screen illumination of the low beam.
  • the H of the 75R test point is 1.15 degrees
  • the V is 0.57 degrees.
  • FIG. 7 is a schematic structural diagram of a low beam module with a light shielding plate.
  • FIG. 8 is a schematic structural diagram of a low beam module with a light shielding plate.
  • FIG. 9 is a schematic diagram of an optical path of a low beam module with a light shielding plate.
  • FIG. 10 is a schematic diagram of a screen illuminance simulation of a low beam module with a light shielding plate according to the present invention.
  • FIG. 11 is a schematic diagram of a light shape at a focal point of a rectangular LED light emitting chip (1mm * 5mm).
  • FIG. 12 is a schematic diagram of the light shape of a rectangular LED light emitting chip (1mm * 5mm) at a distance of 1mm from the focus.
  • FIG. 13 is a schematic diagram of the light shape of a rectangular LED light emitting chip (1mm * 5mm) at a distance of 2mm from the focus.
  • FIG. 14 is a schematic diagram of the light shape of a rectangular LED light emitting chip (1mm * 5mm) at a distance of 3mm from the focus.
  • FIG. 15 is a schematic diagram of the light shape of a rectangular LED light emitting chip (1mm * 5mm) at a distance of 4mm from the focus.
  • Figure 16 is a schematic diagram of the light shape of a rectangular LED light emitting chip (1mm * 5mm) at a distance of 5mm from the focus.
  • 1 is an LED light source
  • 2 is a lens
  • 3 is an LED circuit board
  • 4 is a light shielding plate
  • 5 is a cut-off line of the light shielding plate
  • 6 is a 75R test point.
  • a rectangular LED light emitting chip (1mm * 5mm) is set near the focal point on the inside of the convex lens.
  • the light emitted by the LED light source close to the Lambertian divergence is converged into nearly parallel light after the convex lens.
  • Emax the Emax value can exceed 240 lx, that is, the upper limit of the Emax value specified by regulations.
  • Figure 4 shows the simulated screen illumination results
  • Figure 5 shows the actual measurement of the product.
  • the Emax value determines the distance of high beam exposure.
  • a light shielding plate is provided in the vicinity of the surface light source.
  • the light shielding plate is disposed at the focal point of the lens, and the surface light source is disposed behind the light shielding plate.
  • One part, that is, the local low-beam illumination light shape near the inflection point of the low-beam, is combined with the auxiliary low-beam unit to achieve a complete low-beam light shape, which can achieve a higher 75R test point illuminance value with a smaller light flux.
  • the rectangular LED light emitting chip (1mm * 5mm) is respectively set at a defocus of 1mm, 2mm, 3mm, 4mm and 5mm inside the convex lens to obtain different light shapes for high beam lighting.
  • the defocus amount increases, the maximum value of the high beam gradually decreases, but the illumination range gradually increases.
  • Different vehicle speeds can be adopted accordingly, such as using a smaller lens defocus amount or no lens defocus amount when driving at high speed to achieve a higher maximum high beam value to achieve the purpose of farther illumination.
  • the maximum high beam (ie, Emax) needs to be within a certain brightness range.
  • Emax the maximum high beam
  • automotive LED headlights GB25991 is a regulation on the lighting function of LED light sources. Headlights, including high-beam, low-beam, and other lighting functions of light distribution performance requirements.
  • the high beam maximum value (that is, the Emax value) is required to be between 48lx and 240lx, and the 75R test point of low beam is required to be not less than 12lx. For better lighting effects, the value is generally increased to more than 20lx in actual lamp design. .
  • the dynamic lighting control method, the device and the vehicle light thereof according to the present invention simultaneously have a high-light illumination light shape adjustment function and a low-light illumination light shape adjustment function. Especially, in the case of vehicles driving at night, in order to meet the different environments and road conditions, To improve driving safety, not only for low beam light shape but also for high beam lighting light shape.
  • the dynamic lighting adjustment according to the present invention can perform jump-type light shape switching between different light shape positions corresponding to different defocus amounts of different lenses, and can also continuously change the light shape to achieve the formation according to different vehicle speeds and different road conditions. Different lighting shapes.

Abstract

L'invention concerne un procédé de commande dynamique de feu de véhicule et un dispositif associé, utilisant un système de commande dynamique de feu de véhicule comprenant une source de lumière et une lentille. La source de lumière est une source de lumière de surface, telle qu'une source de lumière de surface à puce électroluminescente de LED. Un axe optique de la source de lumière de surface est aligné avec une surface incidente de la lentille. La lentille est utilisée pour effectuer une collimation primaire sur la lumière qui a été émise par la source de lumière de surface et qui a subi une divergence approximativement lambertienne, de sorte que la lumière, ayant traversé la lentille, se propage de manière sensiblement parallèle, de façon à produire un faisceau lumineux qui crée une forme sur un écran avant. La source de lumière de surface est disposée devant ou derrière le point focal de la lentille, de façon à être hors foyer. La quantité selon laquelle la source de lumière de surface est hors foyer par rapport à la lentille peut être ajustée pour modifier la forme de la lumière sur l'écran avant ; c'est-à-dire en obtenant un éclairage dynamique, de façon à fournir différentes formes de lumière en fonction de la vitesse du véhicule et des conditions routières. L'invention améliore l'éclairage et la sécurité de conduite, et réduit les coûts.
PCT/CN2019/088522 2018-07-13 2019-05-27 Procédé de commande dynamique de feu de véhicule, système associé et feu de véhicule WO2020010932A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810775459.7 2018-07-13
CN201821112400.1 2018-07-13
CN201810775459.7A CN109827138B (zh) 2018-07-13 2018-07-13 一种车灯动态照明控制方法及其系统和车灯
CN201821112400.1U CN209295011U (zh) 2018-07-13 2018-07-13 一种车灯动态照明控制系统和车灯

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WO2020010932A1 true WO2020010932A1 (fr) 2020-01-16

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101150905A (zh) * 2007-10-19 2008-03-26 陆勇 高亮度汽车大灯的安全使用方法
US20090141513A1 (en) * 2007-11-29 2009-06-04 Sl Seobong Adaptive front light system using led headlamp
CN105351839A (zh) * 2011-09-01 2016-02-24 株式会社小糸制作所 车辆用前照灯装置
US20160281951A1 (en) * 2015-03-23 2016-09-29 Stanley Electric Co., Ltd. Vehicle lighting fixture
CN106671870A (zh) * 2015-11-10 2017-05-17 迅驰车业江苏有限公司 一种汽车车灯控制系统
CN107300145A (zh) * 2016-04-15 2017-10-27 株式会社小糸制作所 车辆用灯具以及具有该车辆用灯具的车辆

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101150905A (zh) * 2007-10-19 2008-03-26 陆勇 高亮度汽车大灯的安全使用方法
US20090141513A1 (en) * 2007-11-29 2009-06-04 Sl Seobong Adaptive front light system using led headlamp
CN105351839A (zh) * 2011-09-01 2016-02-24 株式会社小糸制作所 车辆用前照灯装置
US20160281951A1 (en) * 2015-03-23 2016-09-29 Stanley Electric Co., Ltd. Vehicle lighting fixture
CN106671870A (zh) * 2015-11-10 2017-05-17 迅驰车业江苏有限公司 一种汽车车灯控制系统
CN107300145A (zh) * 2016-04-15 2017-10-27 株式会社小糸制作所 车辆用灯具以及具有该车辆用灯具的车辆

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