CN105371199A - 车辆用头灯 - Google Patents
车辆用头灯 Download PDFInfo
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- CN105371199A CN105371199A CN201410584657.7A CN201410584657A CN105371199A CN 105371199 A CN105371199 A CN 105371199A CN 201410584657 A CN201410584657 A CN 201410584657A CN 105371199 A CN105371199 A CN 105371199A
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- 230000001678 irradiating effect Effects 0.000 description 2
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- 230000007423 decrease Effects 0.000 description 1
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Classifications
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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
- F21S41/10—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/26—Elongated lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/27—Thick lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
-
- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
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- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
本发明涉及一种车辆用头灯,是上下左右的透镜规格具有非对称放大率的车辆用头灯,其可以包括光源及配置于所述光源的前方且水平放大率与垂直放大率互异的非球面透镜。根据本发明实施例的车辆用头灯中设置于车灯内的透镜形状为非对称结构,从而具有能够向左右扩散照明光的效果。并且,通过省略反射面及遮光构件以减少部件数量,在降低制造成本的同时提供原本由反射面及遮光构件执行的保持切断及大扩散功能。
Description
技术领域
本发明涉及一种车辆用头灯,尤其涉及上下左右的透镜规格具有非对称放大率的车辆用头灯。
背景技术
通常,车辆具有多种车灯,这些车灯中有的起到在夜间行驶时为确保容易确认车辆周边对象而照明的功能,有的起到向其他车辆或道路上人员提示本车辆行驶状态的信号功能。例如,前照灯及雾灯等起到照明功能,转向灯、尾灯、刹车灯、示廓灯等起到信号功能。
这些车灯通常采用的光源主要是卤素灯或氙气(Highintensitydischarge,HID)灯等。
现在主要采用的光源是发光二极管(Lightemittingdiode,LED),一般来讲,LED的色温约为5500K,接近太阳光,对人眼造成的疲劳程度最小,此外由于尺寸小,因此在设计车灯方面可提高设计自由度,不仅如此,由于其寿命半永久,从而还具备经济性。
现在的主要研究方向是尝试通过导入发光二极管解决当前车灯结构复杂、加工工序繁多的问题,当前的趋势是试图利用发光二极管本身特性延长车灯寿命,利用其尺寸小的特性解决车灯空间上的问题。
另外,各种车灯中前照灯比其他车灯使用的光束模式更为多样。例如,前照灯根据车辆的行驶状态,例如行驶速度、行驶方向、路面情况及周围亮度等照射最佳光束模式的光,从而在充分确保驾驶员视野的同时防止对周边车辆造成炫目。
并且,采用发光二极管时为确保在照射各种光束模式的光的同时确保足够光量,采用一个以上的发光二极管。
但是,现有的车灯在缩小非球面透镜的尺寸时其效率性大幅下降,而且由于光学尺寸大,因此无法把多个模块设置在车灯内。
现有技术文献
专利文献
韩国授权专利第10-1339159号。
发明内容
技术问题
为解决上述问题,本发明的目的在于提供一种车辆用头灯,其通过在头灯内设置非对称形状的透镜,以提供原本由反射面及遮光构件执行的保持切断及大扩散功能。
本发明另一目的在于通过省略反射面及遮光构件减少部件数量,以节省制造成本。
技术方案
为有效解决上述问题,本发明可以包括光源及配置于所述光源的前方且水平放大率与垂直放大率互异的非球面透镜。
所述光源可以由发光二极管(LED)构成。
所述非球面透镜可以是畸变透镜(Anamorphiclens)。
所述光源的特征可以是从所述非球面透镜的焦点向上方至少移动2mm发光。
所述非球面透镜的球面曲线可以通过以下数学式所形成:
C:曲率(curvature)
K:圆锥常数(conicconstant)
A:垂直非球面高次项系数
B:水平非球面高次项系数。
技术效果
根据本发明实施例的车辆用头灯中设置于车灯内的透镜形状为非对称结构,从而具有能够向左右扩散照明光的效果。
并且,通过省略反射面及遮光构件以减少部件数量,在降低制造成本的同时提供原本由反射面及遮光构件执行的保持切断及大扩散功能。
附图说明
图1为显示根据本发明实施例的车辆用头灯的非球面透镜的上下部分的示意图;
图2为显示根据本发明实施例的车辆用头灯的非球面透镜的左右部分的示意图;
图3为显示根据本发明实施例的从车辆用头灯的焦点向透镜发光的状态的示意图;
图4为显示根据本发明实施例的光源位于正位置时光的发光状态的示意图;
图5为显示根据本发明实施例的光源位于焦点上方2mm时光的发光状态的示意图;
图6为显示根据本发明实施例的光源位于焦点上方3mm时光的发光状态的示意图;
图7为显示根据本发明实施例的光源位于焦点上方4mm时光的发光状态的示意图。
附图标记说明
10:光源20:非球面透镜
具体实施方式
以下参照附图详细说明本发明的优选实施例。首先,需要注意的是,在对各附图的构成要素赋予附图标记方面,对于相同的构成要素,即使在不同的附图上显示,也尽可能赋予相同的附图标记。并且在说明本发明时,若判断认为对相关公知的结构或功能的具体说明有可能混淆本发明的内容时,省略有关详细说明。另外,以下将说明本发明的优选实施例,但本发明的技术方案并不限定或限制于此,所属技术领域的技术人员可多样地变形实施,这是不言而喻的。
图1为显示根据本发明实施例的车辆用头灯的非球面透镜的上下部分的示意图,图2为显示根据本发明实施例的车辆用头灯的非球面透镜的左右部分的示意图,图3为显示根据本发明实施例的从车辆用头灯的焦点向透镜发光的状态的示意图。
如图所示,根据本发明实施例的车辆用头灯包括光源10及配置在光源10前方的非球面透镜20。
采用的光源10可以是发光二极管(LightEmittingDiode;LED)元件,且可以是向预定方向照射光的指向性光源。
并且,光源10可以是白色发光二极管,在一个半导体发光元件中还可设置有多个发光芯片。
其中,光源10因不耐受高温高热而可能出现性能下降的问题,因此可以采用放热板(未示出)来防止由于光源10放出的热而引起的温度的上升。
光源10的前方设置有非球面透镜20。所构成非球面透镜20的水平方向与垂直方向放大率互异。
即,非球面透镜20像畸变透镜(Anamorphiclens)一样,纵向比例相对小于横向比例。
例如,非球面透镜20的横向比例与纵向比例为6:4或7:3,横向比例大于纵向比例。从而,非球面透镜20形状可以是横向长度大于纵向长度的长方形。
因此,从光源10射出的光的上下焦点保持一致,且上下扩散的光受到约束。相反,左右焦点大幅扩散,因此光能够左右扩散。
在此,非球面透镜20的外面曲线应确保使得垂直焦点受约束,水平焦点大幅扩散。因此基于可形成虚像的双曲线(hyperbola)进行设计。
用于满足上述条件的数学式如下:
C:曲率(curvature)
K:圆锥常数(conicconstant)
A:垂直非球面高次项系数
B:水平非球面高次项系数。
上述数学式是根据求一般圆锥曲线(coniccurve)的数学式与求非球面曲线的数学式算出的。
即,求一般圆锥曲线的数学式为:
k=0:球面(sphere)
-1<k<0:椭圆(ellipse)
k=-1:抛物线(parabola)
k<-1:双曲线(hyperbola)
k>1:非常规圆锥曲线(notatrueconicsection)。
并且,求非球面曲线的数学式为:
c:曲率
K:圆锥常数
C:非球面高次项系数
由上述一般圆锥曲线的数学式及非球面曲线的数学式可知,以一个轴为基准旋转二维平面上设计得到的非球面透镜20的非球面曲线,以立体化非球面透镜,即可构成普通的具有一个焦点的非球面透镜。
图4为显示根据本发明实施例的光源位于正位置时光的发光状态的示意图,图5为显示根据本发明实施例的光源位于焦点上方2mm时光的发光状态的示意图,图6为显示根据本发明实施例的光源位于焦点上方3mm时光的发光状态的示意图,图7为显示根据本发明实施例的光源位于焦点上方4mm时光的发光状态的示意图。
如图4至图7所示,当光源10位于正位置时,通过非球面透镜的光的形状是从光束模式的中心整体扩散的形状,但当光源10位于焦点上方2mm时,上端形成切断线,下端出现光发散现象。
如上所述,可通过调整非球面透镜20的形状与光源10的位置形成光束模式,从而可以省略反射面及遮光构件。
因此,根据本发明实施例的车辆用头灯中非球面透镜20的垂直方向放大率与水平方向放大率互异,从而能够提高光学效率及性能,能够使得制造具有同等效率而尺寸却更小的车辆用头灯成为可能。
并且,光直接从光源10射向非球面透镜20,从而可省略反射面及遮光构件,组装工序也相应减少,因此还能够实现减少部件数量的效果。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照上述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对上述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (5)
1.一种车辆用头灯,其特征在于,包括:
光源;以及
非球面透镜,其配置于所述光源的前方,水平放大率与垂直放大率互异。
2.根据权利要求1所述的车辆用头灯,其特征在于:
所述光源是发光二极管。
3.根据权利要求1所述的车辆用头灯,其特征在于:
所述非球面透镜是畸变透镜。
4.根据权利要求1所述的车辆用头灯,其特征在于:
所述光源从所述非球面透镜的焦点向上方至少移动2mm发光。
5.根据权利要求1所述的车辆用头灯,其特征在于:
所述非球面透镜的球面曲线是通过以下数学式所形成:
C:曲率
K:圆锥常数
A:垂直非球面高次项系数
B:水平非球面高次项系数。
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KR1020140115298A KR20160026420A (ko) | 2014-09-01 | 2014-09-01 | 차량용 헤드램프 |
KR10-2014-0115298 | 2014-09-01 |
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CN114967150A (zh) * | 2022-06-13 | 2022-08-30 | 海信集团控股股份有限公司 | 车辆及光学自由曲面的确定方法 |
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DE102018113533B4 (de) * | 2018-06-06 | 2024-02-08 | Shutter Precision Co., Ltd. | Optische Beleuchtungsvorrichtung für Fahrzeuge |
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KR20160026420A (ko) | 2016-03-09 |
US20160061399A1 (en) | 2016-03-03 |
US9528674B2 (en) | 2016-12-27 |
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