WO2016101463A1 - 一种车灯照明用局部镀铝透镜 - Google Patents

一种车灯照明用局部镀铝透镜 Download PDF

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Publication number
WO2016101463A1
WO2016101463A1 PCT/CN2015/077398 CN2015077398W WO2016101463A1 WO 2016101463 A1 WO2016101463 A1 WO 2016101463A1 CN 2015077398 W CN2015077398 W CN 2015077398W WO 2016101463 A1 WO2016101463 A1 WO 2016101463A1
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Prior art keywords
lens
light
illumination
partial
vehicle lamp
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PCT/CN2015/077398
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English (en)
French (fr)
Inventor
张洁
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HASCO Vision Technology Co Ltd
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Shanghai Koito Automotive Lamp Co Ltd
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Priority to US15/539,108 priority Critical patent/US10139069B2/en
Priority to EP15871539.1A priority patent/EP3239601B1/en
Publication of WO2016101463A1 publication Critical patent/WO2016101463A1/zh
Anticipated expiration legal-status Critical
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—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
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to 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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

Definitions

  • the invention belongs to the field of vehicle lamp illumination, and in particular relates to a partial aluminized lens for illumination of a vehicle lamp.
  • the existing optical module capable of forming a cut-off line of a near-light band inflection point needs to be composed of a main low-beam unit capable of forming a cut-off line with a cut-off point and an auxiliary low-beam unit capable of forming a horizontal cut-off line, as shown in FIG. It consists of three units, which is complicated and cumbersome and takes up a lot of space.
  • the main low beam module is composed of an LED light source, a main low beam mirror, a main low beam mask and a main low beam lens.
  • the light emitted by the LED light source is reflected by the mirror toward the main low beam lens, and the main low beam shutter is provided with a cutoff line shape with an inflection point, which is disposed at the focus of the main low beam lens.
  • the shape of the inflection point required for the low beam is formed by the occlusion of the cut-off line of the main low-beam visor, and is then irradiated onto the road surface by the magnification of the lens.
  • the above-mentioned main low beam unit has the defects of low light efficiency and generally 30% to 40% light efficiency.
  • the existing LED light source has a luminous flux of about 1300 lumens.
  • the luminous flux of the actually used LED light source is generally reduced, generally not exceeding 1000 lumens, so the above-mentioned main low beam unit is actually irradiated.
  • the luminous flux of the road surface is between 300 lumens and 400 lumens, so the above-mentioned main low-beam unit cannot meet the luminous flux requirement of low-light 500 lumens to 1000 lumens.
  • the prior art solution is to reduce the illumination range of the main low beam unit, about 20 degrees in the front and rear directions of the vehicle, and in practice, the general low beam illumination range is about 40 degrees inside the vehicle, and the outside of the vehicle About 70 degrees, so the auxiliary low beam unit needs to be supplemented.
  • the auxiliary low beam unit can be composed of 1 to 2 auxiliary low beam modules, which can form a horizontal cutoff line of about 40 degrees inside the vehicle and about 70 degrees outside the vehicle.
  • the defect of the auxiliary low beam unit is that only the horizontal cutoff line can be formed, which cannot be realized. Near-light cut-off line with inflection point required. Therefore, it is necessary to combine the two light shapes to form a low beam illumination function.
  • the structure for forming the horizontal cut-off line is completed by another lens unit disposed in front of the lens, and the overall structure is complicated, involving more parts and occupying a larger space;
  • the luminosity emitted by the light source of the vehicle is only partially utilized by the lens, and the rest is wasted;
  • the present invention provides an optimized aluminum-plated lens for illumination of a vehicle lamp, and the technical solution thereof is as follows:
  • a partial aluminized lens for illumination of a vehicle lamp disposed in front of a light source (1) of a vehicle lamp, characterized in that:
  • the partial aluminized lens includes an incident surface (2) forming a main light shape, an exit surface (3), and a reflective surface (4) forming an auxiliary light shape.
  • the incident surface and the exit surface forming the main light shape are completed by a plano-convex lens (5).
  • the reflecting surface forming the auxiliary light shape is completed by a reflective bracket (6) integrally provided with the plano-convex lens, and the reflection is formed by partially aluminizing the reflective bracket.
  • connection portion (7) is formed at a junction of the plano-convex lens and the reflection bracket,
  • the light wave can form an illumination range from 35 degrees to 45 degrees on the inside of the vehicle through the incident surface of the plano-convex lens, the reflection surface and the connection portion of the reflection bracket, and a main light shape with a horizontal cut-off line on the outer side of the vehicle from 65 degrees to 75 degrees.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the incident surface forming the main light shape is a plane or a curved surface.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the reflective bracket is disposed in a bowl shape, and the partial aluminum plated lens for illumination of the vehicle lamp is fixed to the heat sink of the lamp light source through the connecting portion.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the aluminum plating thickness is 4.5 to 5.5 ⁇ m.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the reflective bracket is partially aluminum plated on the inner side.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the reflective bracket is partially aluminum plated on the outer side.
  • a partially aluminized lens for illumination of a vehicle lamp according to the present invention characterized in that:
  • the lamp light source is formed by 1-5 LED chip arrays.
  • the partial aluminized lens for illumination of the vehicle lamp of the present invention is improved in structure around the purpose of cost saving, so that the improved lens can meet the requirement of forming a cut-off line once, and the previous need to cooperate with other illumination units can be omitted.
  • the redundant structure is formed.
  • the present invention increases the light utilization efficiency within the safety margin by improving the position of the lens and the light source. Further, the present invention also eliminates the light-shielding structure between the previous lamp light source and the lens. . Replace structurally cumbersome vehicle components with structural optimization.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a first light pattern diagram formed by the present invention
  • FIG. 3 is a schematic view showing a second light shape formed by the present invention.
  • FIG. 4 is a schematic view showing a third light shape formed by the present invention.
  • Figure 5 is a fourth light pattern diagram formed by the present invention.
  • Figure 6 is a schematic view of the structure of the prior art.
  • 1 is the light source of the vehicle; 2 is the incident surface; 3 is the exit surface; 4 is the reflective surface; 5 is the plano-convex lens; 6 is the reflective bracket; 7 is the connecting portion.
  • a partial aluminized lens for illumination of a vehicle lamp as shown in FIG. 1 is disposed in front of a lamp light source (1), and the partial aluminized lens includes an incident surface (2) and an exit surface forming a main light shape. (3) and a reflecting surface (4) forming an auxiliary light shape,
  • the incident surface and the exit surface forming the main light shape are completed by a plano-convex lens (5).
  • the reflecting surface forming the auxiliary light shape is completed by a reflective bracket (6) integrally provided with the plano-convex lens.
  • connection portion (7) is formed at a junction of the plano-convex lens and the reflection bracket,
  • the light wave can form a main light shape with an illumination range of about 40 degrees on the inner side of the vehicle through the entrance surface and the exit surface of the plano-convex lens, and a horizontal cut-off line with a horizontal cut-off line on the outer side of the vehicle, and the light wave passes through the incident surface of the plano-convex lens.
  • the reflecting surface and the connecting portion of the reflecting bracket can form an auxiliary light shape of the cut-off line with the inflection point required for the low-light shape of about 20 degrees inside and outside the vehicle, and form a final by superimposing the two light shapes.
  • the low beam illumination shape can form a main light shape with an illumination range of about 40 degrees on the inner side of the vehicle through the entrance surface and the exit surface of the plano-convex lens, and a horizontal cut-off line with a horizontal cut-off line on the outer side of the vehicle, and the light wave passes through the incident surface of the plano-convex lens.
  • the reflecting surface and the connecting portion of the reflecting bracket can form an
  • the lamp light source is formed by arranging one or several square LED light-emitting chips, generally 1 to 5. Place The LED light-emitting chip can be regarded as a surface light source. By placing the LED light-emitting chip at the focus of the lens, the light emitted by the LED light-emitting chip is twice refracted through the incident surface and the exit surface to form an illumination light shape with a horizontal cut-off line;
  • the incident surface forming the main light shape is a plane or a curved surface.
  • the reflective bracket is disposed in a bowl shape, and the partial aluminum plated lens for illumination of the vehicle lamp is fixed to the heat sink of the lamp light source through the connecting portion.
  • the aluminum plating of the inner wall and the outer wall of the reflective bracket can be achieved by a partial vacuum aluminum plating process, which avoids the aluminum plating of the incident surface and the reflecting surface of the lens, thereby affecting the formation of the main light shape.
  • the vacuum aluminizing process may form a reflective aluminized layer having a surface of about 5 microns formed on the surface of the lens.
  • the reflective bracket is designed according to the direction of the incident light, and can reflect the reflected light to a desired illumination area, such as an inflection point of the near-light cut-off line, to form an F2 light shape as shown in FIG. 4, and FIG. 2
  • the F2 light shape is used to increase the illumination area, or the F2 light shape of Figure 3, to enhance the illumination intensity of the local area.
  • the partial aluminized lens can also be used as a high beam illumination function, and the light emitted by the LED light source can be formed by the plano-convex lens through a specific exit surface design.
  • the high beam illumination main light shape F1 shown in FIG. 5 forms a supplementary light shape F2 by reflection of the reflection surface of the reflection bracket, thereby ensuring the brightness of the high beam center point and increasing the illumination range of the high beam.
  • the above-mentioned partial aluminum-plated lens for illumination of a vehicle lamp can meet the technical requirements of forming a cut-off line at a time under the premise of meeting cost saving and reducing the space by the arrangement of the reflection bracket, and the setting of the reflection bracket is also certain
  • the shading effect can be achieved by directly fixing the plano-convex lens and the radiator of the lamp light source, thereby eliminating the previously provided mechanism for shading; by re-optimizing the distance between the convex lens and the lamp source, increasing the car
  • the utilization of the light source; the different reflection brackets can be used to meet the needs of different cut-off lines (as shown in Figures 2, 3 and 4 and different light shapes according to different reflective bracket mechanisms, in the figure, F1 is the main Light shape; F2 is auxiliary light shape; F3 is light and dark cut-off line); the reflective bracket adopts partial vacuum aluminum plating to form a reflecting surface, and can form a reflective aluminum plating layer of about 5 micrometers on the inner side or the outer side surface of the reflective
  • the reflecting surface can be set to a different shape, so that the reflected light forms a required complementary light shape.
  • the F2 light shape in 2 is used to expand the illumination range
  • the F2 light shape of FIG. 3 is used for localization.
  • the F2 light shape of FIG. 4 is used to form a cut-off line with an inflection point necessary for forming a low beam, and to enlarge the illumination range of the high beam light form F1 shown in FIG.
  • the partial aluminized lens for illumination of the vehicle lamp of the present invention is improved in structure around the purpose of cost saving, so that the improved lens can meet the requirement of forming a cut-off line once, and the previous need to cooperate with other illumination units can be omitted.
  • the redundant structure is formed.
  • the present invention increases the light utilization efficiency within the safety margin by improving the position of the lens and the light source. Further, the present invention also eliminates the light-shielding structure between the previous lamp light source and the lens. . Replace structurally cumbersome vehicle components with structural optimization.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种车灯照明用局部镀铝透镜，其设置于车灯光源（1）的前方，包括有形成主光形的入射面（2）、出射面（3）及形成辅助光形的反射面（4），形成主光形的入射面（2）和出射面（3）由一平凸透镜（5）完成，形成辅助光形的反射面（4）由与平凸透镜（5）一体设置的反射支架（6）完成，反射支架（6）通过局部镀铝形成。该车灯照明用局部镀铝透镜可满足一次形成明暗截止线的需要，省去需要配合其他发光单元才能一次形成的冗杂构造。

Description

一种车灯照明用局部镀铝透镜 技术领域
本发明属于车灯照明领域，具体涉及一种车灯照明用局部镀铝透镜。
背景技术
汽车车灯中根据不同的照明功能，需要对光源发出的光线的光路进行控制，以形成特定的照明光形，同时需要满足法规对相应照明功能的测试点的亮度需求特别是雾灯等功能还需要在路面上形成照明的水平明暗截止线，如图3所示；特别的是近光功能还需要在路面上形成带拐点的明暗截止线，如图4所示，以避免对来车的驾驶人员造成眩目，影响行车安全。
现有的可形成近光带拐点的截止线的光学模组需要一个能够形成带拐点明暗截止线的主近光单元及一个能够形成水平明暗截止线的辅助近光单元组成，如图6所示，其由三个单元构成，结构复杂繁琐，占用空间大。其中，主近光模组由LED光源、主近光反射镜、主近光遮光板及主近光透镜组成。LED光源发出的光线经过反射镜反射向主近光透镜，同时主近光遮光板上设有带拐点的截止线形状，所述截止线设于主近光透镜的焦点处。通过主近光遮光板的截止线的遮挡形成近光所需的带拐点的光形，再通过透镜的放大，照射到路面。但是上述主近光单元的缺陷在于：光效较低，光效一般在30﹪至40﹪。而目前现有的LED光源标定光通量在1300流明左右，由于散热问题以及考虑到LED光源的寿命，一般会降低实际使用的LED光源光通量，一般不超过1000流明，所以上述主近光单元实际照射到路面的光通量在300流明至400流明之间，所以上述主近光单元无法满足近光500流明至1000流明的光通量要求。
目前现有技术的解决方案是，缩小主近光单元的照明范围，约车前方向左右各20度范围的路面，而在实际中，一般近光的照明范围在车内侧40度左右，车外侧70度左右，所以需要辅助近光单元进行补充照明。辅助近光单元可以由1至2个辅助近光模块组成，可形成车内侧40度左右，车外侧70度左右的水平截止线，辅助近光单元的缺陷在于仅可形成水平截止线，无法实现带拐点的近光截止线要求。所以需要通过两种光形的叠加，组合成近光照明功能。
除此之外，上述技术还存在如下问题：
1.用以形成水平明暗截止线的结构是一个透镜配合设置于前方的另一个发光单元完成，整体结构庞杂，涉及的零部件较多，占据的空间较大；
2.车灯光源发出的光度仅仅被透镜利用一部分，而其余部分均被浪费掉；
3.不被透镜利用的光线还会形成杂散光，需要通过遮光设置将这一部分影响去除。
发明内容
为在能够简化结构和装配的基础上一次性解决以上问题，本发明对现有技术进行的优化设置，提供了一种车灯照明用局部镀铝透镜，其技术方案具体如下：
一种车灯照明用局部镀铝透镜，设置于车灯光源(1)的前方，其特征在于：
所述的局部镀铝透镜包括有形成主光形的入射面(2)、出射面(3)及形成辅助光形的反射面(4)，
所述形成主光形的入射面和出射面由一平凸透镜(5)完成，
所述形成辅助光形的反射面由与平凸透镜一体设置的反射支架(6)完成，所述反射通过对反射支架局部镀铝形成，
在平凸透镜与反射支架的交接处形成有接续部(7)，
所述的光波经由平凸透镜的入射面、反射支架的反射面及接续部可形成照明范围在车内侧35度—45度，车外侧65度—75度带有水平明暗截止线的主光形及车内、外侧各15度—25度的带有近光光形所需的带拐点的明暗截止线的辅助光形。。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述形成主光形的入射面为平面或曲面。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述的反射支架为碗状设置，所述的车灯照明用局部镀铝透镜通过接续部固定于车灯光源的散热器。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述镀铝厚度为4.5—5.5μm。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述的反射支架为内侧面局部镀铝。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述的反射支架为外侧面局部镀铝。
根据本发明的一种车灯照明用局部镀铝透镜，其特征在于：
所述的车灯光源由1-5个LED芯片阵列而成。
本发明的一种车灯照明用局部镀铝透镜，围绕节约成本的宗旨，在结构上做改进，使得改进后的透镜可满足一次形成明暗截止线的需要，省却先前需要配合其他发光单元才能一次形成的冗杂构造，进一步地，本发明通过对透镜和灯源的位置改进，在安全裕量内增大了光照利用率，进一步地，本发明还省却了先前车灯光源与透镜间的遮光结构。利用结构优化替代之前冗杂的车装组件。
附图说明
图1为本发明的结构示意图；
图2为本发明形成的第一种光形示意图；
图3为本发明形成的第二种光形示意图；
图4为本发明形成的第三种光形示意图；
图5为本发明形成的第四种光形示意图；
图6为现有技术的结构示意图。
图中，1为车灯光源；2为入射面；3为出射面；4为反射面；5为平凸透镜；6为反射支架；7为接续部。
具体实施方式
下面，根据说明书附图和具体实施方式对本发明的一种车灯照明用局部镀铝透镜作进一步具体说明。
如图1所示的一种车灯照明用局部镀铝透镜，设置于车灯光源(1)的前方，所述的局部镀铝透镜包括有形成主光形的入射面(2)、出射面(3)及形成辅助光形的反射面(4)，
所述形成主光形的入射面和出射面由一平凸透镜(5)完成，
所述形成辅助光形的反射面由与平凸透镜一体设置的反射支架(6)完成，
在平凸透镜与反射支架的交接处形成有接续部(7)，
所述的光波经由平凸透镜的入射面及出射面可形成照明范围在车内侧40度左右，车外侧70度左右带有水平明暗截止线的主光形,所述的光波经由平凸透镜的入射面、反射支架的反射面及接续部可形成车内、外侧各20度左右的带有近光光形所需的带拐点的明暗截止线的辅助光形，通过两种光形的叠加，形成最终的近光照明光形。
所述车灯光源由1个或若干个方形LED发光芯片排列而成，一般为1至5个。所 述LED发光芯片可视作面光源，通过将LED发光芯片置于透镜的焦点处，LED发光芯片所发出的光线经过入射面及出射面的两次折射形成带水平截止线的照明光形；
所述形成主光形的入射面为平面或曲面。
所述的反射支架为碗状设置，所述的车灯照明用局部镀铝透镜通过接续部固定于车灯光源的散热器。
所述的反射支架的内壁及外壁镀铝可以通过局部真空镀铝工艺实现，避免对透镜的入射面及反射面进行镀铝，从而影响主光形的形成。所述真空镀铝工艺可以形成在透镜表面形成5微米左右的反射镀铝层。所述反射支架根据入射光的方向进行特定的形状设计，可以将反射光线反射向所需的照明区域，如近光明暗截止线的拐点位置，形成如图4的F2光形，又如图2的F2光形，用于加大照明区域，或如图3的F2光形，用于加强局部区域的照明强度。
作为所述的一种车灯照明用局部镀铝透镜的补充功能，局部镀铝透镜还可以用作远光照明功能，通过特定的出射面设计，LED光源发出的光线经过平凸透镜后可以形成如图5所示的远光照明主光形F1，通过反射支架的反射面的反射形成补充光形F2，保证远光中心点亮度的同时增大远光的照明范围。
以上描述的一种车灯照明用局部镀铝透镜，通过反射支架的设置，在满足节约成本、减少占空的前提下能够满足一次形成明暗截止线的技术要求，反射支架的设置同时兼具一定的遮光效果，在此基础上通过将平凸透镜与车灯灯源的散热器直接固定，便可省却先前另外设置的用以遮光的机构；通过重新优化凸透镜与车灯光源的距离，增大车灯光源的利用率；通过设置不同的反射支架可满足不同的明暗截止线的需要(如图2、3、4所示及根据不同的反射支架机构实现的不同光形，图中，F1为主光形；F2为辅助光形；F3为明暗截止线)；所述的反射支架采用局部真空镀铝形成反射面，可以在反射支架的内侧面或外侧面，形成5微米左右的反射镀铝层，优选地，为4.5微米—5.5微米。反射面根据入射光的方向，可以将反射面设置成不同的形状，使反射光形成需要的补充光形，比如2中的F2光形用于扩大照明范围，图3的F2光形用于局部增强照明强度，图4的F2光形用于形成近光所必需的带拐点的明暗截止线，以及扩大图5所示的远光光形F1的照明范围。
本发明的一种车灯照明用局部镀铝透镜，围绕节约成本的宗旨，在结构上做改进，使得改进后的透镜可满足一次形成明暗截止线的需要，省却先前需要配合其他发光单元才能一次形成的冗杂构造，进一步地，本发明通过对透镜和灯源的位置改进，在安全裕量内增大了光照利用率，进一步地，本发明还省却了先前车灯光源与透镜间的遮光结构。 利用结构优化替代之前冗杂的车装组件。

Claims (7)

  1. 一种车灯照明用局部镀铝透镜，设置于车灯光源(1)的前方，其特征在于：
    所述的局部镀铝透镜包括有形成主光形的入射面(2)、出射面(3)及形成辅助光形的反射面(4)，
    所述形成主光形的入射面和出射面由一平凸透镜(5)完成，
    所述形成辅助光形的反射面由与平凸透镜一体设置的反射支架(6)完成，所述反射通过对反射支架局部镀铝形成，
    在平凸透镜与反射支架的交接处形成有接续部(7)，
    所述的光波经由平凸透镜的入射面、反射支架的反射面及接续部形成照明范围在车内侧35度—45度，车外侧65度—75度带有水平明暗截止线的主光形及车内、外侧各15度—25度的带有近光光形所需的带拐点的明暗截止线的辅助光形。
  2. 根据权利要求1所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述形成主光形的入射面为平面或曲面。
  3. 根据权利要求1所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述的反射支架为碗状设置，所述的车灯照明用局部镀铝透镜通过接续部固定于车灯光源的散热器。
  4. 根据权利要求1所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述镀铝厚度为4.5—5.5μm。
  5. 根据权利要求4所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述的反射支架为内侧面局部镀铝。
  6. 根据权利要求4所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述的反射支架为外侧面局部镀铝。
  7. 根据权利要求1所述的一种车灯照明用局部镀铝透镜，其特征在于：
    所述的车灯光源由1-5个LED芯片阵列而成。
PCT/CN2015/077398 2014-12-24 2015-04-24 一种车灯照明用局部镀铝透镜 Ceased WO2016101463A1 (zh)

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