WO2017075780A1 - Système antireflet intégré pour phare de véhicule - Google Patents

Système antireflet intégré pour phare de véhicule Download PDF

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Publication number
WO2017075780A1
WO2017075780A1 PCT/CN2015/093847 CN2015093847W WO2017075780A1 WO 2017075780 A1 WO2017075780 A1 WO 2017075780A1 CN 2015093847 W CN2015093847 W CN 2015093847W WO 2017075780 A1 WO2017075780 A1 WO 2017075780A1
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WO
WIPO (PCT)
Prior art keywords
lens
fresnel
light
integrated anti
parabolic
Prior art date
Application number
PCT/CN2015/093847
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English (en)
Chinese (zh)
Inventor
赵海天
Original Assignee
深圳大学
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 深圳大学 filed Critical 深圳大学
Priority to PCT/CN2015/093847 priority Critical patent/WO2017075780A1/fr
Publication of WO2017075780A1 publication Critical patent/WO2017075780A1/fr

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Classifications

    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens 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

Definitions

  • the invention belongs to the technical field of anti-glare technology of vehicles, and in particular relates to an integrated anti-glare system for vehicle headlights.
  • the traditional vehicle headlights (mainly low beam lights) have two measures to prevent elevation glare: one is the lens design, the precise light distribution through the convex lens reduces the overflow light; the other is to set the upper light intercepting plate and cut off through the upper light intercepting plate.
  • the direct light between the driver of the opposite vehicle and the headlights makes the driver unable to see the light source.
  • the LED light source is the currently widely used vehicle illumination source, and the LED point source emits nearly 180 Degree of scattered light.
  • the Fresnel lens can converge the front light (center light) from the light source directly to the Fresnel lens into a nearly parallel beam with a small beam angle. See Figure 2 .
  • Parabolic optical lenses converge non-frontal light (non-central light) into near-parallel beams with small beam angles. Combine the two to form an LED point source that emits close to 180
  • the scattered light of the degree converges into a Fresnel-parabolic lens with a nearly parallel beam of small beam angle. After being distributed by a Fresnel-parabolic lens, the scattered light from the LED source is converted into a circular spot with a smaller diameter.
  • the necessary condition for the parabolic lens to emit parallel light is that the light source is an infinitely small particle located exactly at the focal point of the parabolic space. Any light emitted from the point of the particle passing through the parabolic lens must be inconsistent with the main optical axis. Consistent, that is, contain non-parallel light. Non-parallel light is fugitive light. The farther away from the focus, the more fugitive light, see the figure. 3, point A is at the focus position, point B and point C are off focus, only point A is emitted parallel to the main optical axis of the parabolic lens, which is effective light; point B and point C emit light Lb, Lc is the escape light.
  • a single one-sided corrugated micro-structured lens is placed in front of the Fresnel-parabolic lens to diffuse the smaller-diameter circular spot horizontally into the strip-shaped spot required for road surface illumination.
  • this structure has an air gap between the Fresnel-parabolic lens and the micro-structured lens, which will cause the light projected by the Fresnel lens to pass through the two interfaces again, which will inevitably reduce the light efficiency, and may also Precipitating dust.
  • the technical problem to be solved by the present invention is to provide An integrated anti-glare system for a vehicle headlight is intended to solve the problems of low light efficiency and poor anti-glare effect of the headlamps in the prior art.
  • an integrated anti-glare system for a vehicle headlight comprising a Fresnel lens, a parabolic lens, and a grid array structure, wherein the Fresnel lens is provided with a circular texture on one side thereof.
  • the other side is provided with a plane, the plane is patterned with stripe corrugations to form a single-sided corrugated lens;
  • the periphery of the parabolic lens is a reflective curved surface, and the longitudinal section of the reflective curved surface is symmetric or asymmetric parabolic;
  • the Fresnel lens and the parabolic lens are integrated to form an inverted Fresnel • Ripple - Parabolic lens, the inverted Fresnel • Ripple -
  • the periphery of the parabolic lens is a reflective curved surface of the parabolic lens, and one end of the focus of the parabolic lens is a circular line of the Fresnel lens, and the other end is a plane of the Fresnel lens;
  • One end of the grid array structure faces the light exit of the luminaire, and the other end is docked with the single-sided corrugated lens.
  • the grid array structure includes a plurality of spaced apart grid sheets.
  • the grid sheet is a film having a transmissive ability.
  • the grid sheet is a film having a flat surface on both the upper and lower surfaces or is alternately connected and bent by a film at an angle of bending at an upward and downward direction.
  • one end of the Fresnel lens is provided with two or more circular lines of the same center.
  • the integrated anti-glare system further includes a lamp housing, the inverted Fresnel • corrugated - Both the parabolic lens and the grid array structure are disposed within the luminaire housing.
  • the lamp housing is provided with a plurality of air inlets corresponding to the position of the light exit port of the lamp, and each air inlet is respectively connected with a gap between two adjacent grid sheets; the lamp housing is opened and The air outlet that communicates with the gap.
  • the position of the air outlet is opened at the bottom of the lamp housing.
  • a cleaning passage for introducing a water flow is opened on a side surface of the lamp housing.
  • the cleaning channel is inclined in the direction of the inverted Fresnel-corrugated-parabolic lens.
  • a drain or a drain hole for draining is further disposed on the lamp housing.
  • the present invention has the beneficial effects that the present invention integrates a Fresnel lens and a parabolic lens to form an inverted Fresnel.
  • the Fresnel lens After the front light from the light source passes through the circular pattern of the Fresnel lens, the light is concentrated at the focus position of the parabolic lens, and the light in multiple directions passing through the position is irradiated onto the reflective surface of the parabolic lens to produce a reflection, which is formed almost and inverted.
  • the parallel light beam of the main optical axis of the parabolic lens, the light beam is diffused in the horizontal direction by a single-sided corrugated lens, and after exiting, a strip-shaped spot with a clear cut-off line is formed, and the strip-shaped spot is emitted through the gap between the grid sheets for front illumination. .
  • Asymmetric inverted Fresnel • Ripple - parabolic lens, ie vertical and horizontal asymmetry, compared to symmetric inverted Fresnel • Ripple - Parabolic lenses further enhance light efficiency.
  • the present invention can provide a strip of light of sufficient brightness to illuminate the road surface while having a good anti-glare effect.
  • Figure 1 shows a schematic diagram of the application of existing headlamps to the sensation of glare by motor vehicle drivers at various locations during driving.
  • Figure 2 is a schematic diagram of a Fresnel lens concentrating front light (center light) into nearly parallel beams with small beam angles.
  • Figure 3 shows a parabolic optical lens that converges non-frontal light (non-center light) into nearly parallel beams with small beam angles.
  • 4a is a front elevational view of an inverted Fresnel® corrugated-parabolic lens provided by an embodiment of the present invention.
  • Figure 4b is a top plan view of the inverted Fresnel • corrugated-parabolic lens shown in Figure 4a.
  • Figure 5 is a view of the light source of the light source through the inverted Fresnel • corrugation in the embodiment of the invention - Schematic diagram of the optical path and glare analysis of the parabolic lens.
  • Figure 6 is an inverted Fresnel • corrugation of an embodiment of the present invention - A front view of a parabolic lens and a flat grid array structure.
  • Fig. 7 is a perspective view showing the structure of a bent type grid sheet array structure according to an embodiment of the present invention.
  • Figure 8 is a view of the light source of the light source through the inverted Fresnel • corrugation of the embodiment of the present invention - Schematic diagram of the optical path of the parabolic lens and the bent grid array structure.
  • Figure 9 is a longitudinal cross-sectional view showing the self-cleaning structure of the lamp housing of the embodiment of the present invention.
  • Figure 10 is a transverse cross-sectional view showing the cleaning structure of the lamp housing of the embodiment of the present invention.
  • an integrated anti-glare system for a vehicle headlight includes a Fresnel lens, a parabolic lens, and a grid array structure 1 .
  • one side of the Fresnel lens is provided with a circular pattern 21
  • the other side is provided with a plane on which a stripe corrugation 221 is formed to constitute a single-sided corrugated lens 22 .
  • the periphery of the parabolic lens is a reflective surface 23, and the reflective surface 23
  • the longitudinal section is symmetrical or asymmetrical parabolic.
  • the Fresnel lens and the parabolic lens are integrated to form an inverted Fresnel • corrugated-parabolic lens 2 .
  • Inverted Fresnel • Ripple - Parabolic Lens The periphery of 2 is the reflective curved surface 23 of the parabolic lens, the end of which is close to the focal point of the parabolic lens is the circular texture 21 of the Fresnel lens, and the other end is the plane of the Fresnel lens.
  • Grid array structure 1 One end faces the light exit 11 of the luminaire, and the other end interfaces with the single-sided corrugated lens 22, which includes a plurality of spaced apart grid sheets 12 .
  • One end of the above Fresnel lens is provided with two or more circular lines 21 of the same center.
  • asymmetric inverted Fresnel • corrugated - parabolic lens 2 That is, the vertical and horizontal directions are asymmetrical, and the light effect is further improved compared to the symmetric inverted Fresnel-corrugated-parabolic lens 2.
  • the grid sheet 12 is a film having a flat surface on both the upper and lower surfaces (ie, a flat grid sheet).
  • a film may be alternately bent and bent in an upward and downward direction at a bending angle (the bending angle in the figure is ⁇ ), and the longitudinal section thereof is substantially wavy.
  • the angle of inclination of the luminaire with respect to the horizontal direction is ⁇
  • the escaping light enters into the grid array structure, is irradiated to the bend of the grid sheet at an angle ⁇ , and then exits at a ⁇ angle to enter the driver.
  • the bent grid piece 12 can more effectively reduce the escape light.
  • the integrated anti-glare system of this embodiment integrates a Fresnel lens and a parabolic lens to form an inverted Fresnel • corrugation - Parabolic lens 2 , the inverted Fresnel • corrugated - parabolic lens 2
  • the end of the focus near the parabolic lens is the circular pattern of the Fresnel lens 21
  • the other end is a plane of a Fresnel lens, and a stripe corrugation 221 is formed on the plane to form a single-sided corrugated lens 22 . Because of Fresnel lenses, parabolic lenses, and single-sided corrugated lenses 22 It integrates and integrates without air layer. The light passes through the interface with less light, high light efficiency, no gap between the lenses, and no problem of sedimentation of dust.
  • the front light from the light source passes through the circular pattern of the Fresnel lens 21 After that, the light is concentrated at the focus position of the parabolic lens, and light rays in a plurality of directions passing through the position are irradiated onto the reflective curved surface 23 of the parabolic lens to produce a reflection, forming almost the same with the inverted Fresnel • corrugated surface - parabolic lens 2
  • the light beam parallel to the main optical axis, the light beam is diffused in the horizontal direction through the single-sided corrugated lens 22, and after exiting, a strip-shaped spot with a clear cut-off line is formed, and the strip-shaped spot passes through the grid sheet 12
  • the gap between the exits is for the road lighting.
  • the above-mentioned strip spot improves the brightness of the road illumination.
  • it is impossible to completely scatter the parallel beam on the light exit surface 24 of the inverted Fresnel corrugated-parabolic lens 2 light will be non-main optical axis direction are formed escaping light L 1, L 1 in the optical component to escape the viewer (here a driver of the vehicle) the gaze direction, constitutes a direct glare L 2. Therefore, it is also necessary to further process the escaped light L 1 .
  • the light escapes through L 1 grid array sheet structure 1 may produce reflections, so that the light L 1 is cut off escape, avoiding escape of light L 1 to direct the eye of the driver (i.e., is to ensure that the human eye can not directly Glare). Therefore, the above integrated anti-glare system can provide a strip of light with sufficient brightness to illuminate the road surface, and at the same time has a good anti-glare effect.
  • the above-mentioned grid sheet 12 is a film having a transmissive ability, which is made of a material having a light absorbing ability.
  • the escape light L 1 and its glare component are greatly attenuated after being reflected and absorbed by the grid sheet 12 as it propagates through the gap between the two adjacent grid sheets 12 of the grid array structure 1.
  • the degree of attenuation of the escaped light L 1 is related to the reflection and absorption characteristics of the grid sheet 12 and the parameters of the grid array structure 1. These parameters include the size of the grid array structure 1 and the spacing between the grid sheets 12 The length, thickness, shape, color, reflectivity, and stacking pattern of the grid 12.
  • FIG. 1 Preferentially, referring to FIG.
  • a grid array structure 1 having a superior effect on attenuating fugitive light, the width of the structure being from the end of the light exit surface 24 of the inverted Fresnel corrugated-parabolic lens 2 to The end near the light exit opening 11 of the lamp gradually increases to form a trapezoidal cross section.
  • the grid structure of the above array substrate 1 so that glare light to escape through at least one of L 1 reflected and absorbed at the two propagation between two adjacent grid plate 12, while reducing glare, reduced the cost of the entire Lighting effect.
  • the parameters of the non-fully reflective grid sheet 12 and the grid array structure 1 need to be optimized.
  • the thickness of the grid sheet 12 If the thickness is too thick, the light efficiency is lowered; if the thickness is too thin, the strength is low.
  • grid sheet 12 The way of stacking. When the average gap is used to stack the grid sheets, the upper cut-off line is not clear enough; when the non-average gap stack is used, the upper cut-off line is more clear.
  • the integrated anti-glare system also includes a luminaire housing 3, inverted Fresnel • corrugated - parabolic lens 2 And the grid array structure 1 is disposed in the lamp housing 3.
  • Lamp housing 3 corresponding to the light outlet of the lamp 11
  • the air inlet is provided with a plurality of air inlets (not shown), and each air inlet is respectively connected with a gap 13 between two adjacent grid pieces 12; the lamp housing 3 is provided with a connection with the gap 13 Tuyere 31
  • the position of the air outlet 31 is opened at the bottom of the lamp housing 3.
  • the relative motion of the vehicle as it advances causes airflow 4 to enter the gap between the grid sheets 12 inside the fixture from the outside. In the middle, the airflow moves horizontally in the gap to wash the upper and upper surfaces of the grid sheet 12, and the inverted Fresnel® corrugated surface of the parabolic lens 2, and finally the air outlet 31 at the bottom of the lamp housing 3 Flow out to achieve self-cleaning effect.
  • the side of the lamp housing 3 is provided with a cleaning passage 32 for opening the water flow, and the cleaning passage 32 To invert the Fresnel • Ripple - the direction of the parabolic lens 2 is tilted.
  • Self-tilting cleaning channel 32 Entering the luminaire, the powerful water vapor 5 on the one hand impacts the Fresnel • corrugation - the illuminating surface of the parabolic lens 2 , on the one hand scrubs the grid 12 , and finally, the sewage 6 along the grid 12 Flow out to achieve the purpose of cleaning.
  • the ventilator casing 3 is further provided with a sump 33 for draining and a drain hole (not shown), and the drain hole is horizontally disposed on the side wall of the luminaire casing, and the drain 33 It is vertically disposed on the side wall of the lamp housing 3.
  • the cleaned water or the water droplets that normally enter the inside of the lamp can be discharged to the outside of the lamp through the drain 33 and the drain hole.
  • the vehicles to which the integrated anti-glare system of the present invention is applied include ships, automobiles (including: automobiles, electric cars, crawlers, construction vehicles, cranes, loaders, motorcycles), and non-motor vehicles.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un système antireflet intégré pour un phare de véhicule comprenant: une lentille de Fresnel inversée • paraboloïde ondulatoire et une structure de réseau de plaques de support. La périphérie de la lentille de Fresnel inversée • paraboloïde ondulatoire est une surface incurvée réfléchissante (23) d'une lentille paraboloïde ; une extrémité de la lentille de Fresnel inversée • paraboloïde ondulatoire est une bande circulaire (21) d'une lentille de Fresnel, et l'autre extrémité est un plan de la lentille de Fresnel ; le plan est gravé avec des ondulations en forme de bandes (221) pour former une lentille ondulée monoface (22). Une extrémité de la structure de réseau de plaques de grille (1) fait face à un orifice de sortie de lumière d'une lampe et l'autre extrémité est en connexion de butée avec la lentille ondulée monoface (1); la structure de réseau de plaques de grille (1) comprend de multiples plaques de grille (12) qui sont empilées à intervalles. Une lumière avant émise par une source de lumière passe à travers la lentille de Fresnel inversée • paraboloïde ondulatoire pour former des points de lumière en forme de bandes pour l'éclairage de la route. Une lumière de fuite est réfléchie par la structure de réseau de plaques de grille (1), ce qui permet d'éviter qu'un conducteur soit directement exposé à la lumière de fuite. Le système antireflet intégré peut fournir une luminosité suffisante pour l'éclairage de la route et présente un bon effet antireflet.
PCT/CN2015/093847 2015-11-05 2015-11-05 Système antireflet intégré pour phare de véhicule WO2017075780A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/093847 WO2017075780A1 (fr) 2015-11-05 2015-11-05 Système antireflet intégré pour phare de véhicule

Applications Claiming Priority (1)

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PCT/CN2015/093847 WO2017075780A1 (fr) 2015-11-05 2015-11-05 Système antireflet intégré pour phare de véhicule

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109058845A (zh) * 2018-10-08 2018-12-21 江苏优为视界科技有限公司 一种降低ugr值的货架灯

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2799153A1 (fr) * 1999-09-30 2001-04-06 Valeo Vision Procede de fabrication d'une lentille pour projecteur du genre elliptique de vehicule automobile, et projecteur incorporant une lentille perfectionnee
US20090213608A1 (en) * 2005-08-22 2009-08-27 Mohsen Mozaffari-Afshar Headlight lens for a vehicle headlight
CN202253335U (zh) * 2011-08-03 2012-05-30 广州市雅江光电设备有限公司 一种led混色灯光学系统
CN203868944U (zh) * 2014-05-23 2014-10-08 刘炜斌 具有条纹的光学透镜

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2799153A1 (fr) * 1999-09-30 2001-04-06 Valeo Vision Procede de fabrication d'une lentille pour projecteur du genre elliptique de vehicule automobile, et projecteur incorporant une lentille perfectionnee
US20090213608A1 (en) * 2005-08-22 2009-08-27 Mohsen Mozaffari-Afshar Headlight lens for a vehicle headlight
CN202253335U (zh) * 2011-08-03 2012-05-30 广州市雅江光电设备有限公司 一种led混色灯光学系统
CN203868944U (zh) * 2014-05-23 2014-10-08 刘炜斌 具有条纹的光学透镜

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109058845A (zh) * 2018-10-08 2018-12-21 江苏优为视界科技有限公司 一种降低ugr值的货架灯

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