CN101684919B - Led street light lens - Google Patents

Led street light lens Download PDF

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Publication number
CN101684919B
CN101684919B CN 200910054935 CN200910054935A CN101684919B CN 101684919 B CN101684919 B CN 101684919B CN 200910054935 CN200910054935 CN 200910054935 CN 200910054935 A CN200910054935 A CN 200910054935A CN 101684919 B CN101684919 B CN 101684919B
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surface
lens
light
light source
angle
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CN 200910054935
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Chinese (zh)
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CN101684919A (en )
Inventor
宋金德
张茂胜
王祥伟
董维胜
陈志忠
王万林
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江苏伯乐达光电科技有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/70Used in particular applications
    • Y02B20/72Used in particular applications in street lighting

Abstract

The invention provides an LED street lamp lens. The lens is arranged above an LED light source, and the shaft lines of the lens and the light source are on the same straight line; the lens comprises an incident surface, an exit surface, a bottom surface, a complete reflective surface and a transitional surface between the complete reflective surface and the exit surface; the incident surface is astrip-shaped pit of which the middle part is a strip-shaped curved surface formed by vertical extending symmetrical circular arc lines and free-form curved lines and both end parts are circular arc surfaces or free-form curved surfaces; the exit surface is in a peanut shape in which the arc is sunk along the X axis and the arc is protruded along the Y axis, the exit surface contour circular arc of the cross section penetrating the central shaft of the lens is protruded, and the exit surface contour central area arc of the vertical section penetrating the central shaft of the lens is sunk; andthe complete reflective surface surrounding the incident surface reflects the light beams to the transitional surface between the complete reflective surface and the exit surface. By using the lens, the light energy given off by the LED light source can be completely transmitted by the refraction of the curved surface of the lens, so that the utilization ratio is comparatively higher.

Description

LED路灯透镜 LED lights lens

技术领域 FIELD

[0001] 本发明涉及LED照明领域,尤其涉及光能利用率较高的LED路灯透镜。 [0001] The present invention relates to the field of LED lighting, particularly to a high efficiency LED street light lenses. 背景技术 Background technique

[0002] 路灯是城市照明的重要组成部分,传统的路灯常采用高压钠灯,高压钠灯整体上光效低的缺点造成了能源的巨大浪费。 [0002] an important part of the city street lighting, street lights often used conventional high pressure sodium, low pressure sodium lamp disadvantages of the overall coating efficiency of huge waste of energy. 因此,开发新型高效、节能、寿命长、显色指数高、环保的路灯对城市照明节能具有十分重要的意义。 Therefore, the development of new high efficiency, long life, high color rendering index, environmentally friendly street has great significance for the city lighting energy.

[0003] 现今,LED光源作为路灯的应用已越来越广泛。 [0003] Nowadays, LED street lamp as a light source has been applied more and more widely. LED光源是光线分布较发散的光源,为配合道路照明,需要在充分提高光能利用率的基础上重新配光。 LED light source is more divergent light distribution, as with the road lighting, the light distribution on the basis of need to sufficiently increase the light use efficiency.

[0004] 目前市场上LED路灯主要采用两种配光形式,第一种为将LED发光模块拱起或凹进,这种配光形式能将光在路面平行方向分布较广,但光能利用率低,均勻性达不到要求。 [0004] LED lamps currently on the market mainly in two forms the light distribution, the first one is arched or recessed LED lighting modules, which can form the light distribution of light in a direction parallel to the road surface widely distributed, but the use of light low, mainly the uniformity. 第二种为采用透镜配光,透镜材料为PC或PMMA,透镜结构设计的不合理和材料本身的损耗,光能利用率低。 The second is the use of the light distribution lens, the lens material is a PC or PMMA, the lens design and material loss unreasonable itself, using low energy.

[0005] 公开号为C拟842182中国专利公开了一种LED路灯,这种路灯中的LED是密集安装在安放板上,安放板中部为平面板,周边向LED的安装面反方向翘起形成夹角,整个LED 的安装面呈凸起状。 [0005] C intended Publication No. 842182 discloses a Chinese LED street lamp, which lights the LED mounted on the mounting plate is a dense, flat central plate mounting plate surrounding the LED to tilt in the opposite direction forming a mounting surface angle, the LED-section mounting convex shape.

[0006] 公开号为CN1821651的中国专利公开了一种大功率LED路灯,这种路灯灯头套接有对应的透镜,透镜通过固定盖板固定。 [0006] Chinese Patent Publication No. CN1821651 discloses a high power LED lamp, street lamp socket which has a corresponding lens, the lens is fixed by the fixing plate.

[0007] 公开号为C拟896006的中国专利公开了一种高亮度LED路灯灯头,灯头内设置有拱形支架,大功率LED安装在支架上,每个LED都装有透镜。 [0007] C intended Publication No. 896006 Chinese patent discloses a high brightness LED street lamp, provided with arched support, high-power LED lamp mounted on the bracket, each LED is equipped with a lens.

[0008] 公开号为CN1936417的中国专利公开了一种LED路灯光源,这种路灯的发光装置是LED安装在散热上座的底面上,底面由相互间成一定夹角的多个倾斜平面构成,LED通过透镜套住,用透镜固定架固定透镜。 [0008] Chinese Patent Publication No. CN1936417 discloses an LED street light, this light-emitting device is an LED lights mounted on the bottom surface of the heat radiating upper seat, the bottom surface is constituted by a certain angle to each other between a plurality of inclined planes, LED trap through the lens, the lens fixed to a lens holder.

[0009] 公开号为CN101105272中国专利公开了一种LED路灯透镜,这种透镜的结构是包含具有圆对称的凹坑和枕头形的出射面以及全反射面,透镜的材料为PC或PMMA。 [0009] Chinese Patent Publication No. CN101105272 discloses an LED street lamp lens, such a lens is a structure comprising dimples having circular symmetry and pillow-shaped total reflection surface and the exit surface, the material of the lens for the PC or PMMA.

[0010] 然而,以上专利文献揭露的路灯透镜的光能利用率很低或均勻性达不到标准。 [0010] However, the above patent document discloses a lens street light energy utilization is low homogeneity or not up to standard.

发明内容 SUMMARY

[0011] 本发明的目的是提供一种光利用率高的LED路灯透镜,达到在矩形区域内满足道路照明的光分布照度要求。 [0011] The object of the present invention is to provide a high efficiency LED street light lenses, to meet the requirements of road lighting illuminance distribution of the light in the rectangular region.

[0012] 为了达成上述目的,提供了一种LED路灯透镜,所述透镜安装在LED光源的上方, 所述透镜和光源的轴线在同一条直线上,所述透镜包含入射面和出射面、底面、全反射面以及全反射面和出射面的过渡面,所述入射面为一个安装所述LED光源的长条形凹坑,凹坑的中部为对称的圆弧线、自由曲线垂直拉伸的长条形曲面,其两端部为圆弧面或自由曲面; 出射面为一个沿着X轴方向弧形凹下、Y轴方向弧形凸出的花生米形状,穿过透镜中心轴的横向截面的出射面轮廓圆弧凸出,穿过透镜中心轴的纵向截面的出射面轮廓中心区域弧形凹下;围绕入射面的全反射面,将光线反射向全反射面和出射面的过渡面。 [0012] To attain the above object, there is provided an LED lamp lens, said lens mounting over the LED light source, the light axis of the lens and on the same line, said lens comprising incident surface and an exit surface, a bottom surface , and the total reflection surface total reflection surface and the exit surface of the transition surface, the incident surface of the LED light source is mounted to a elongated pit, the pit is symmetrical with the center line of an arc, a free curve is drawn perpendicular elongated curved surface, both end portions is a circular arc surface or a free curved surface; exit surface is a concave arcuate along the X-axis, Y-axis direction of the convex arcuate shape of peanuts, a transverse axis passing through the center of the lens a central region of the contour of the exit surface of the exit surface a cross-sectional profile of convex arc passing through the lens center axis of the concave arcuate longitudinal section; total reflection surfaces surrounding the incident surface, and the total reflection surface reflects the light exit surface toward the transition surface .

[0013] 较佳地,所述横向截面的正半截面轮廓的线段包括入射面轮廓包含线段AB、曲线BC,底面轮廓为线段CD,全反射面轮廓为曲线DE,过渡面轮廓为曲线EF,出射面轮廓为曲线FG。 [0013] Preferably, the transverse cross-sectional segment of the positive half-section profile of the incident surface comprises a contour including segments AB, the BC curve, the bottom surface of the CD contour line segments, curved total reflection surface contour DE, curved transition surface profile EF, exit surface contour curve FG.

[0014] 较佳地,re曲线的构造方法为:AB与re线构成二维透镜,通过Z轴旋转360度, 将光源所发出的从0度到α角内的光能重新分配在垂直于LED光源中心线的目标平面的半径为r圆形区域内,中心线经过圆形区域的中心;TO上点坐标为(χ,ζ),光线从光源点到(x,ζ)经过re上的点(χθ,ζθ),从而确定光源发出光线的顶角,在顶角内的光通量等于对应的目标平面内圆形面积乘以照度,最终根据微分方程解出re曲线的数值解。 [0014] Preferably, the method is configured to re curve: AB and re lines constituting the two-dimensional lens, the Z axis rotated by 360 degrees, from 0 degrees to the angle α of the light emitted from the light source is perpendicular to redistribute the radius of the target plane to the center line of the LED light sources r circular area, the center line passing through the center of the circular region; point coordinates (χ, ζ) on the tO, the light from the light source to the point (x, ζ) on after a re point (χθ, ζθ), an apex angle of light emitted to determine the source of the object plane in the apex angle is equal to the light quantity corresponding to the illumination area of ​​a circle is multiplied, the final solution according to the numerical solution of differential equations re curve.

[0015] 较佳地,所述纵向截面的正半截面轮廓的线段包括入射面轮廓包含线段ab,底面轮廓为线段bc,全反射面轮廓为曲线cd,过渡面轮廓为曲线de,出射面轮廓为曲线ef。 Segment [0015] Preferably, the longitudinal cross-sectional profile of the positive half-section includes an incident surface contour including segments ab &, the bottom surface contour line segments BC, CD total reflection surface contour curve, a curve contour de transition surface, the exit surface contour curve ef.

[0016] 较佳地,ef曲线的构造方法为:ab与ef线构成二维透镜,通过Z轴旋转360度, 将光源所发出的从0度到β角内的光能重新分配在垂直于LED光源中心线的目标平面的半径为r圆形区域内,中心线经过圆形区域的中心;假设光源为点光源,ef上点坐标为(y, z),光线从光源点到(y,z)为入射光线,从(y,z)到目标平面为出射光线,在顶角内的光通量等于对应的目标平面内圆形面积乘以照度,最终根据微分方程解出ef曲线的数值解;其中ab为根据LED实际配光所做调整的自由曲线。 [0016] Preferably, the method ef curve is configured: ab ef lines constituting the two-dimensional lens, the Z axis rotated by 360 degrees, from 0 degrees to the angle β of the light emitted from the light source is perpendicular to redistribute the radius of the target plane to the center line of the LED light sources r circular area, the center line passing through the center of the circular region; assumed light source is a point light source, the ef coordinate point (y, Z), the light from the light source to the point (y, z) of the incident ray, from (Y, z) to the target outgoing light plane, the object plane in the apex angle is equal to the light quantity corresponding to the illumination area of ​​a circle is multiplied, the final solution according to the numerical solution of differential equations ef curve; wherein ab is a free-form curve with the actual LED light in accordance with the adjustments made.

[0017] 较佳地,光源所发出的光路包括小角度光路和大角度光路,所述小角度光路为从光源发出经过入射面折射到达出射面,然后再经过折射,从出射面出射,在一定距离的垂直水平面内形成矩形光斑的所有光线组成,所述小角度光路在所述横向截面上所述透镜的垂线的夹角在80度之内,所述小角度光路在所述纵向平面上与所述垂线的夹角在80度之内; 所述大角度光路为从光源发出经过入射面折射到达外围全反射面,经过反射后到达过渡面,然后再经过折射从透镜出射,光线集中在上述矩形光斑之内,从而对中心区域的光进一步增强补偿。 [0017] Preferably, the optical path of light emitted by comprising a small angle light path and the large-angle light path, the small-angle light path is emitted from the light source through the incident surface refracted reaches the exit surface, and then refracted from the exit surface, a certain all light rays forming an angle perpendicular rectangular beam within a vertical plane consisting of distance, the small-angle light path in the transverse cross section of the lens is within 80 degrees of the small angle light path in the longitudinal plane angle with the vertical within 80 degrees; the angle of Great light path from the light source is emitted through the incident surface refracted arrival peripheral total reflection surface, after reflection reaches the transition surface, and then refracted through the exit from the lens, light concentration in said rectangular beam, the light to further enhance the compensation of the central region.

[0018] 较佳地,所述透镜的材料为聚甲基丙烯酸甲酯、聚碳酸酯或者玻璃。 [0018] Preferably, the material of the lens is a polymethyl methacrylate, polycarbonate or glass.

[0019] 较佳地,所述透镜为单个安装或多个阵列在和LED对应的发光面板上。 [0019] Preferably, the lens is a single or a plurality of arrays mounted on the light emitting panel and the corresponding LED.

[0020] 使用本发明的透镜,LED光源所发出的光能都能经过透镜曲面的折射传输出,因此利用率较高。 [0020] using the lens according to the present invention, light emitted from the LED light source can be transmitted through the refractive surfaces of the lens, and therefore higher efficiency. 本发明的透镜的出射曲面的独特设计,可以把光能在照射面上很好的分配,因此均勻度较高。 Lens of the present invention, the exit surface of the unique design of the energy distribution in the irradiated surface well, therefore high uniformity.

附图说明 BRIEF DESCRIPTION

[0021] 参考下文之现时较佳实施例的描述以及附图,可最佳地理解本发明及其目的与优 [0021] Hereinafter with reference to the preferred embodiments of the present description and drawings, may be best understood and its objects and advantages of the present invention

;^^,I . ; ^^, I.

[0022] 图1是本发明路灯透镜配合LED的系统剖视图; [0022] FIG. 1 is a LED lights lens system of the present invention with a sectional view;

[0023] 图2是本发明路灯透镜配合两颗LED系统的剖视;图 [0023] FIG. 2 is a street lamp lens of the present invention with two cross-sectional view of the LED system; FIG.

[0024] 图3是本发明透镜的上表面立体图; [0024] FIG. 3 is a perspective view of a surface of the lens of the present invention;

[0025] 图4是本发明透镜的下表面立体图; [0025] FIG. 4 is a perspective view of a lower surface of the lens of the present invention;

[0026] 图5是本发明透镜横向截面的二维坐标标记图; [0026] FIG. 5 is a two-dimensional coordinate signature of the transverse section of the lens of the present invention;

[0027] 图6是本发明透镜纵向截面的二维坐标标记图;[0028] 图7是本发明透镜阵列安装图; [0027] FIG. 6 is a two-dimensional coordinate according to the present invention, the lens signature longitudinal section; [0028] FIG. 7 is a lens array of the present invention, FIG mounted;

[0029] 图8是本发明路灯透镜配合LED系统光线传播图; [0029] FIG. 8 is a lens of the invention with LED street light system of FIG propagation;

[0030] 图9是实施本发明路灯透镜光学系统的实际安装照度分布图; [0030] FIG. 9 is a practical embodiment of the installation of FIG lights illuminance distribution lens optical system according to the present invention;

[0031] 图10是实施本发明路灯透镜光学系统的实际安装配光曲线图。 [0031] FIG. 10 is a graph showing an actual mounting street light distribution lens optical system of the present invention.

[0032] 附图符号表: [0032] BRIEF symbol table:

[0033] 11〜透镜 111〜透镜入射面 [0033] 11~ light incident plane lens 111~

[0034] 112〜透镜出射面 113〜透镜全反射面 [0034] 112~ the lens exit surface total reflection surface of the lens 113~

[0035] 114〜透镜全反射面和出射面的过渡面115〜透镜底面 [0035] 114~ total reflection surface and the exit lens surface of the lens bottom surface transition surface 115~

[0036] 12〜LED光源 3〜目标区域 [0036] 12~LED target source region 3 ~

[0037] 121〜光源所发出的光线分成小角度光路 Light [0037] 121~ light emitted by a small angle into the light path

[0038] 122〜光源所发出的光线分成大角度光路 [0038] The light emitted by the light 122~ large angle into the light path

具体实施方式 detailed description

[0039] 现参考附图描述根据本发明的LED路灯透镜的较佳实施例。 [0039] Referring now to the accompanying drawings a preferred embodiment of the lens of the LED lamp of the present invention.

[0040] 如图1所示,根据本发明实施例LED路灯应用于一般的LED路灯光学系统1中。 [0040] 1, according to the embodiment of the present invention is applied to the LED lights in general embodiment of an LED street lamp optical system 1. 光学系统1包含LED光源12。 The optical system 1 includes an LED light source 12. LED光源12安装于透镜11底面。 LED light source 12 is mounted on the bottom surface of the lens 11.

[0041] 本实施例中,LED光源12为单个或多个大功率LED或LED模组。 [0041] In this embodiment, LED light source 12 is a single or a plurality of high power LEDs or LED modules. LED光源12发出角度基本为180度的光。 LED light source 12 emits light angle of substantially 180 degrees. 图2示出了是本发明路灯透镜配合两颗LED系统的剖视图。 Figure 2 shows a cross-sectional view of the two LED lights lens system of the present invention is fitted.

[0042] 透镜11将LED光源13所发出光线经过重新整形,在一定距离的垂直平面内形成矩形光斑的透镜。 [0042] The lens 11 LED light source 13 emits light through the reshaped to form a rectangular beam in the vertical plane of the lens a certain distance. 现详述透镜11的结构。 DETAILED DESCRIPTION Now the structure of the lens 11.

[0043] 如图3和4所示,透镜11包含入射面111和出射面112、全反射面113以及全反射面和出射面的过渡面114、底面115。 [0043] As shown in FIG. 3 and 4, the lens 11 includes an incident surface 111 and exit surface 112, 113 and the total reflection surface total reflection surface and the exit surface of the transition surface 114, bottom surface 115. 入射面111为长条形凹坑,凹坑的中部为对称的圆弧线、自由曲线垂直拉伸的长条形曲面,其两端部为圆弧面或自由曲面。 Incident surface 111 of the elongated pits, the pits central symmetrical arc line, consisting of a vertical elongated tensile curve surface, both end portions is a circular arc surface or a free curved surface. 出射面112为一个纵向弧形凹下、横向弧形凸出的花生米形状。 Emission surface 112 is a concave arcuate longitudinal, transverse arcuate convex shape peanuts. 围绕入射面的全反射面113,将光线反射向全反射面和出射面的过渡面114。 Surrounding the incident surface of the total reflection surface 113 reflects the light total reflection surface and the transition surface to the exit surface 114.

[0044] 如图5和6所示,透镜11的入射面111与出射面112按照如下方式形成: [0044] As shown in FIGS. 5 and 6, the lens 11 of the incident surface 111 and exit surface 112 is formed as follows:

[0045] 定义透镜中心轴为Z轴,与照明系统的主光轴方向重合,穿过透镜中心轴的横向截面为XZ平面,其出射面轮廓圆弧凸出,穿过透镜中心轴的纵向截面为YZ平面,其出射面轮廓中心区域弧形凹下。 [0045] The definition of the lens center axis to the Z axis, the main optical axis direction of the illumination system coinciding transverse section through the lens center axis of the XZ plane, which arc convex exit face contour, a longitudinal section through the central axis of the lens is YZ plane, the contour of which the central area of ​​the exit surface of the concave arc.

[0046] 透镜XZ平面上的正半截面轮廓的线段表示:入射面轮廓为线段AB,过渡面轮廓为曲线BC,底面轮廓线CD,全反射面轮廓线DE,过渡面轮廓线EF,出射面轮廓为曲线TO。 [0046] segment positive half-section profile of the lens XZ plane representation: incident surface contour line segment AB, the transition surface profile of the curve BC, the bottom surface contour CD, the total reflection surface contour DE, transition surface contour EF, exit surface contour curve tO.

[0047] ⑶曲线的构造方法为: Construction method [0047] ⑶ curve is:

[0048] AB与TO线构成二维透镜,通过Z轴旋转360度,假设成三维圆对称透镜,将光源所发出的从0度到α角内的光能重新分配在目标平面的半径为r圆形区域内,假设光源为点光源,re上点坐标为(X,z),根据光线折射定律,确定光线从光源点到(χ,ζ)经过re上的点(xO,c),从而确定光源发出光线的顶角,点(xO,zO)通过以下公式求得 [0048] AB and the line constituting the two-dimensional lensing TO, rotated 360 degrees by the Z-axis, assuming a three-dimensional circularly symmetric lens, reallocated from 0 degrees to the angle α of light emitted from the light source in the object plane of a radius r circular region, assuming the light source is a point light source, Re point coordinates (X, z), according to the law of light refraction, light from a light source is determined to point (χ, ζ) passes through the point (xO, c) on the re, whereby determining light source emits light apex point (xO, zO) obtained by the following formula

[0049] Γ = ^na-n2+(A-N0)2 -A-N0 [0049] Γ = ^ na-n2 + (A-N0) 2 -A-N0

[0050] (0· 1)[0051] [0050] (0 · 1) [0051]

Figure CN101684919BD00061

[0052] 此时出射光线矢量 [0052] At this time, the outgoing light vector

Figure CN101684919BD00062

[0053] 入射光线矢量 [0053] The vector of the incident light

Figure CN101684919BD00063

[0054] η为空气密度 [0054] η is the air density

[0055] η'为透镜密度 [0055] η 'is the density of the lens

[0056] 然后光线由点(xO,z0)到达(X,ζ)经过折射出射到目标区域,同样根据折射定律(1. 1),从而求得在到达目标圆形区域的半径r ; [0056] Then the light reaches the point (xO, z0) (X, ζ) is irradiated through a reflection target area, according to the same law of refraction (1.1) to obtain the radius r of the circular region to the goal;

[0057] 此时出射光线矢量 [0057] At this time, the outgoing light vector

Figure CN101684919BD00064

[0058]入射光线矢量 [0058] The vector of the incident light

Figure CN101684919BD00065

[0059] η为透镜密度 [0059] η is the density of the lens

[0060] η'为空气密度 [0060] η 'is the air density

[0061] 再根据光能经过透镜的能量守恒公式,在顶角内的光通量等于对应的目标平面内圆形面积乘以照度。 [0061] The energy equation of conservation of energy then passes through the lens of the light flux in the object plane is equal to an apex angle corresponding to the circular illumination area multiplied. 在顶角2 θ内的光通量为 Flux in the apex angle of 2 θ

Figure CN101684919BD00066

[0062] 在目标平面的半径为r圆形区域内的光通量为Φ2 = Ε*πΓ2,从而由边界条件χ =0,z = a和能量守恒公式ΦΙ = Φ2可以最终确定坐标点(x,z)数值解,最终拟合成TO 自由曲线。 [0062] In the object plane to the radius r of the circular light flux region Φ2 = Ε * πΓ2, so that the boundary condition χ = 0, z = a and the energy conservation equation can be finally determined ΦΙ = Φ2 coordinate point (x, z ) numerical solution, the final fit to a curve consisting of TO.

[0063] 透镜YZ平面上的正半截面轮廓的线段表示:入射面轮廓包含线段ab,底面轮廓为线段bc,全反射面轮廓为曲线cd,过渡面轮廓为曲线de,出射面轮廓为曲线ef。 [0063] segment positive half-section profile of the lens YZ plane represented: incident surface profile comprising a line segment ab, the bottom surface contour line bc, total reflection surface contour curve cd, transition surface contour curve de, exit surface contour curve ef .

[0064] ef曲线的构造方法为: Construction method [0064] ef curve is:

[0065] ab与ef线构成二维透镜,通过Z轴旋转360度,假设成三维圆对称透镜,将光源所发出的从0度到β角内的光能重新分配在目标平面的半径为r圆形区域内,假设光源为点光源,ef上点坐标为(y,ζ),根据光线折射定律,光线从光源点到(y,ζ)为入射光线,从(y,ζ)到目标平面为出射光线,根据光能经过透镜过程中能量守恒公式,在光源顶角内的光通量等于对应的目标平面内圆形面积乘以照度,根据边界条件y = 0,ζ = 0G,以及满足上述公式的微分方程,求得ef曲线的数值解,最终拟和成ef自由曲线。 [0065] ab to ef lines constituting the two-dimensional lens, the Z-axis rotated 360 degrees, assuming a three-dimensional circularly symmetric lens, reallocated from 0 degrees to the angle β of light emitted by the light source in the object plane of a radius r circular region, assuming the light source is a point light source, the point coordinates (y, ζ) on ef, according to the law of light refraction, light from the light source to the point (y, ζ) of incident light, from the (y, ζ) to the target plane into outgoing light, light passes through the lens during the energy conservation equation, the plane of the target light flux in the light source is equal to an apex angle corresponding to the illumination area of ​​a circle is multiplied, based on the boundary conditions y = 0, ζ = 0G, and satisfies the above equation according to the differential equations, numerical solution obtained curve ef, ef eventually fitting into a free curve.

[0066] 同理可以求得经过Y轴、与Z轴夹角为al的平面Pl上的曲线elf 1,al > 1度,此时的边界条件为y = 0,ζ = 0G1,Gl为面Pl与CG的交点。 [0066] Similarly can be determined through the Y-axis, and Z-axis angle of the curve on a plane Pl al elf is 1, al> 1 degrees, which is the boundary conditions y = 0, ζ = 0G1, Gl is a surface Pl intersection with the CG. a2角度对应的e2f2,a2 > al。 angle a2 corresponding e2f2, a2> al. 若将CG分割成等角度N段曲线(N > 3),则可共求得有N+1条曲线。 If CG is divided into N equal angular segment curve (N> 3), there can be obtained a total of N + 1 curve.

[0067] 透镜的出射面112是通过以上求得的纵横曲线网格化而成的曲面。 [0067] exit surface of the lens 112 through the above aspect curve obtained from grid surfaces.

[0068] ab为根据LED实际配光所做调整的圆弧线或自由曲线,ab垂直拉伸的曲面经过左右对称最终形成入射面111的凹坑中间部分。 [0068] ab actual LED light distribution according to the adjustments made circular arcs or free curves, ab surface perpendicular drawn through the final formed symmetrically incident surface 111 of the intermediate portion of the pit.

[0069] 本实施例中,透镜11的材料为聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)或者玻 [0069] In this embodiment, the lens material 11 is polymethyl methacrylate (PMMA), polycarbonate (PC) or glass

璃ο Glass ο

[0070] 本实施例中,根据本发明的LED路灯透镜为单个安装。 [0070] In this embodiment, the LED lights as a single lens of the present invention is installed. 当然,本发明的透镜还可阵列形成模块安装,如图7所示。 Of course, the lens array is formed according to the present invention may also install module, as shown in FIG.

[0071] 如图8所示,本发明从LED光源12所发出的光线分成小角度光路121和大角度光路122,光路121是从LED光源12发出后射向透镜11的入射面111,再由入射面111射向透镜的出射面112,最后由经过出射面112折射到达在一定距离的垂直水平面内的目标区域, 在目标区域内形成矩形光斑的所有光线组成,小角度光路在XZ平面上与Z轴的夹角在80 度之内,小角度光路在YZ平面上与Z轴的夹角在80度之内。 [0071] As shown, the present invention light from the LED light source emitted 12 into low angle light path 121 and the large-angle light path 1228, the optical path 121 from the LED light source 12 is emitted toward the incident surface 111 of the lens 11, and then the incident surface 111 toward the lens exit surface 112, and finally refracted by through exit face 112 reaches the target region in a vertical plane a certain distance are formed all rays rectangular beam composition within the target area, the small-angle optical path on the XZ plane Z-axis within an angle 80 degrees, a small angle with the angle between the optical path of the Z axis in the YZ plane within 80 degrees. 光路122是由LED光源12 发出后射向透镜11的全反射面113,再经过全反射面113反射射向全反射面113和出射面112的过渡区域114,最后经过折射到达目标区域3,光线集中在上述矩形光斑之内,从而对中心区域的光进一步增强补偿。 The light path 122 is emitted from the LED light source 12 toward the total reflection surface 113 of the lens 11, and then through the total reflection surface 113 is totally reflected toward the reflective surface 113 of transition zone 114 and an exit surface 112, and finally reach the target area 3 refracted light concentrated rectangular beam of the above, to further enhance the compensation light of the central region.

[0072] 由以上的光路传输原理可以看出,LED光源所发出的光能都能经过透镜曲面的折射传输出,另外通过透镜出射曲面的设计可以把光能在照射面上很好的分配,达到照度均勻性要求。 [0072] As can be seen from the above principle of the optical transmission path, light emitted from the LED light source can be transmitted through the refractive surfaces of the lens, the well may additionally irradiated surface of the light distribution emitted by the lens surface design, achieve illumination uniformity requirements.

[0073] 图9、图10为实施本发明方案后的LED路灯达到的效果图,分别为照度分布图和配光曲线图。 [0073] FIG 9, FIG 10 is a view of the effect of the embodiment of the present invention to achieve the LED lights, respectively, light distribution and illuminance distribution graph of FIG. 由这两张光学效果图可以看出在有效照明范围内,光照度的均勻性能达到道路照明标准。 By these two optical effect can be seen in the effective illumination range, to achieve uniform illumination performance standards for road lighting.

[0074] 本发明具有如下优点。 [0074] The present invention has the following advantages.

[0075] (1)使用本发明的透镜,LED光源所发出的光能都能经过透镜曲面的折射传输出, 因此利用率较高。 [0075] (1) using the lens of the present invention, light emitted from the LED light source can be transmitted through the refractive surfaces of the lens, and therefore higher efficiency.

[0076] (2)本发明的透镜的出射曲面的独特设计,可以把光能在照射面上很好的分配,因此均勻度较高。 [0076] (2) of the present invention, the lens exit surface of the unique design of the energy distribution in the irradiated surface well, therefore high uniformity.

[0077] 尽管业已描述本发明的示范实施例,本技术领域的技术人员应理解可对这些实施例作出修改而不超出本发明的主旨和精神,本发明的范围由所附权利要求及其等同物所限定。 [0077] While the invention has been described with an exemplary embodiment of the present embodiment, those skilled in the art will appreciate that modifications may be made to these embodiments without departing from the spirit and spirit of the invention, the scope of the present invention is defined by the appended claims and their equivalents It was defined.

Claims (6)

  1. 1. 一种LED路灯透镜,所述透镜安装在LED光源的上方,所述透镜和光源的轴线在同一条直线上,所述透镜包含入射面和出射面、底面、全反射面以及全反射面和出射面的过渡面,其特征在于:所述入射面为一个安装所述LED光源的长条形凹坑,凹坑的中部为对称的圆弧线、自由曲线垂直拉伸的长条形曲面,其两端部为圆弧面或自由曲面;出射面为一个沿着X轴方向弧形凹下、Y轴方向弧形凸出的花生米形状,穿过透镜中心轴的横向截面的出射面轮廓圆弧凸出,穿过透镜中心轴的纵向截面的出射面轮廓中心区域弧形凹下;围绕入射面的全反射面,将光线反射向全反射面和出射面的过渡面,所述横向截面的正半截面轮廓的线段包括入射面轮廓包含线段AB、曲线BC,底面轮廓为线段CD,全反射面轮廓为曲线DE, 过渡面轮廓为曲线EF,出射面轮廓为曲线re,FG曲线的 1. An LED street lamp lens, the exit surface, a bottom surface, the total reflection surface and a total reflection surface of the lens over the LED light source is mounted, the axis of the lens and the light source is on the same line, said lens comprising an incident surface and and the exit surface of the transition surface, wherein: the incident surface of the LED light source is mounted to a elongated pit, the pit is symmetrical with the center line of the arc, the elongated curved surface consisting of a vertical stretch , both end portions of an arcuate surface or a free curved surface; exit surface is a concave arcuate along the X-axis, Y-axis direction of the convex arcuate shape of peanuts, the transverse cross-section through the central axis of the exit surface of the lens arcuate convex contour, the contour of a longitudinal section of the central region of the arcuate concave exit surface through the lens center axis; total reflection surfaces surrounding the incident surface, the light reflected toward the total reflection surface and the transition surface emitting surface, the lateral line section positive half-section profile includes an incident surface contour including segments AB, curve BC, the bottom surface of the contour line segment CD, the total reflection surface contour curve DE, transition surface contour curve EF, exit surface contour curve re, FG curve 造方法为:AB与re线构成二维透镜,通过Z轴旋转360度,将光源所发出的从0度到α角内的光能重新分配在垂直于LED光源中心线的目标平面的半径为r圆形区域内,中心线经过圆形区域的中心;re上点坐标为(χ, ζ),光线从光源点到(χ,ζ)经过re上的点(xO,zO),从而确定光源发出光线的顶角,在顶角内的光通量等于对应的目标平面内圆形面积乘以照度,最终根据微分方程解出re曲线的数值解。 Method of manufacturing: AB and re lines constituting the two-dimensional lens, the Z axis rotated by 360 degrees, from 0 degrees to the angle α of the light emitted from the light source redistributed plane perpendicular to the target radius of the center line of the LED light source r within the circular area, the center line passing through the center of the circular region; Re point coordinates (χ, ζ), the light passes through the point (xO, zO) on re, to determine from the light source to the point (χ, ζ) a light source apex angle of light emitted, the inner circle area multiplied by the illumination luminous flux in the object plane corresponding to the apex angle is equal to, the final solution according to the numerical solution of differential equations re curve.
  2. 2.如权利要求1所述的路灯透镜,其特征在于,所述纵向截面的正半截面轮廓的线段包括入射面轮廓包含线段ab,底面轮廓为线段bc,全反射面轮廓为曲线cd,过渡面轮廓为曲线de,出射面轮廓为曲线ef。 2. The street lamp lens according to claim 1, wherein said longitudinal segment of the positive half-section profile section includes an incident surface contour line segment ab & comprises, a bottom surface contour line segments BC, CD curved total reflection surface contour, transition curved surface contour de, exit surface contour curve ef.
  3. 3.如权利要求2所述的路灯透镜,其特征在于,ef曲线的构造方法为:ab与ef线构成二维透镜,通过Z轴旋转360度,将光源所发出的从0度到β角内的光能重新分配在垂直于LED光源中心线的目标平面的半径为r圆形区域内,中心线经过圆形区域的中心;假设光源为点光源,ef上点坐标为(y,z),光线从光源点到(y,z)为入射光线, 从(y,ζ)到目标平面为出射光线,在顶角内的光通量等于对应的目标平面内圆形面积乘以照度,最终根据微分方程解出ef曲线的数值解;其中ab为根据LED实际配光所做调整的自由曲线。 3. The street lamp lens according to claim 2, characterized in that the curve is configured ef method: ab ef lines constituting the two-dimensional lens, the Z axis rotated by 360 degrees, the angle β from 0 degrees to the light emitted redistribute light within a certain radius in a plane perpendicular to the center line of LED light sources within a circular region r, the center line through the center of the circular region; assumed light source is a point light source, the point coordinates (y, z) on ef , the light from the light source to the point (y, z) of the incident ray, from (y, ζ) to the target outgoing light plane, the object plane in the apex angle is equal to the luminous flux corresponding to the illumination area of ​​a circle is multiplied, according to a differential final ef a numerical solution of equations of the curve; wherein ab is a free-form curve with the actual LED light in accordance with the adjustments made.
  4. 4.如权利要求1所述的路灯透镜,其特征在于:光源所发出的光路包括小角度光路和大角度光路,所述小角度光路为从光源发出经过入射面折射到达出射面,然后再经过折射, 从出射面出射,在一定距离的垂直水平面内形成矩形光斑的所有光线组成,所述小角度光路在所述横向截面上与所述透镜的垂线的夹角在80度之内,所述小角度光路在所述纵向平面上与所述垂线的夹角在80度之内;所述大角度光路为从光源发出经过入射面折射到达外围全反射面,经过反射后到达过渡面,然后再经过折射从透镜出射,光线集中在上述矩形光斑之内,从而对中心区域的光进一步增强补偿。 4. A street lamp lens according to claim 1, wherein: the optical path of light emitted by comprising a small angle light path and the large-angle light path, the small-angle light path is emitted from the light source through the incident surface refracted reaches the exit surface, then through refracted from the exit surface, all the light spots are formed in a rectangular vertical level at a distance from the composition, and the angle of the lens perpendicular to the optical path in a small angle to the transverse cross-section within 80 degrees, the small angle of said optical path in the longitudinal plane perpendicular to the angle of 80 degrees; the angle of Great light path from the light source is emitted through the incident surface refracted arrival peripheral total reflection surface, after reflection reaches the transition surface, then emitted from the lens is refracted, the light is concentrated in the above-described rectangular beam, thereby further enhancing the compensation light of the central region.
  5. 5.如权利要求1所述的路灯透镜,其特征在于,所述透镜的材料为聚甲基丙烯酸甲酯、 聚碳酸酯或者玻璃。 The street lamp lens according to claim 1, wherein the lens material is polymethyl methacrylate, polycarbonate or glass.
  6. 6.如权利要求1所述的路灯透镜,其特征在于,所述透镜为单个安装或多个阵列在和LED对应的发光面板上。 6. The lens of claim 1 street claim, wherein said lens is mounted on a single or multiple array of light emitting panels and the corresponding LED.
CN 200910054935 2009-07-16 2009-07-16 Led street light lens CN101684919B (en)

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CN102162625A (en) * 2011-01-30 2011-08-24 深圳市众明半导体照明有限公司 Large-angle LED and LED lamp
CN102494298A (en) * 2011-11-29 2012-06-13 天津工业大学 Design method of array free curved lens for LED street lamp

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