CN102683337A - Integrated method of high-power light-emitting diode (LED) arrays - Google Patents

Integrated method of high-power light-emitting diode (LED) arrays Download PDF

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CN102683337A
CN102683337A CN2012101840568A CN201210184056A CN102683337A CN 102683337 A CN102683337 A CN 102683337A CN 2012101840568 A CN2012101840568 A CN 2012101840568A CN 201210184056 A CN201210184056 A CN 201210184056A CN 102683337 A CN102683337 A CN 102683337A
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array
led
led array
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high
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CN2012101840568A
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孙玉平
张云龙
王建坤
苏宙平
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江苏彤明车灯有限公司
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Abstract

The invention discloses an integrated method of high-power light-emitting diode (LED) arrays. The method comprises first achieving optical arrangement of LED array base modules through a value optimizing method, enabling the illuminance of the LED array base modules on illuminating surfaces to be uniformized, and enabling the LED array base modules to comprise base arrays formed respectively by 4 LEDs, 5 LEDs, 6 LEDs and 7 LEDs; then expanding the base array modules into a large-scale LED array; and finally continuously selecting a required number of LED subarrays in the large-scale LED array to serve as an applied array. The large-scale LED array is formed by more than 7 LEDs. The integrated method has the advantages that the LED array with a random number can be integrated by using the value optimizing method to optimize a few array base modules. The method is fast and simple, and automatic arrangement is achieved. In particular, when the number of the LEDs is very large, the integrated method has a very obvious advantage.

Description

大功率LED阵列集成方法 High-power LED array integrated process

技术领域 FIELD

[0001] 本发明涉及一种大功率LED阵列的集成方法,属于LED照明技术领域。 [0001] The present invention relates to a method for an integrated high-power LED array, LED lighting technology belongs.

背景技术 Background technique

[0002] 随着光效的不断提高,LED逐渐发展为一种新型的光源,广泛应用各种照明如:路灯、隧道灯、工矿灯、室内照明及投影与显示照明。 [0002] With the improvement of luminous efficiency, LED gradually developed into a new light source, a wide variety of lighting applications, such as: lights, tunnel lights, mining lights, interior lighting and display lighting and projection. 单颗LED由于输出的光通量有限,因此在很多照明应用中,需要将多颗LED集成一个LED阵列模组使用。 Due to the limited output of a single LED light flux, so in many lighting applications, it is necessary to integrate a multiple LED array module using the LED. 因此如何设计一个LED阵列模组,使其在目标平面上实现均匀照明,是一个非常关键的问题。 Therefore, how to design an LED array module, so as to achieve uniform illumination on the target plane, is a very critical issue. 先前的技术对LED阵列的排列,主要是通过解析的方法进行计算LED阵列的排布,求解过程复杂,计算效率低,只能对近似朗伯分布的LED进行排列设计。 The prior art arrangement of the LED array, mainly through the LED array is calculated analytically arrangement, solving process is complicated, computational efficiency is low, the LED can be arranged approximately Lambertian distribution design. 中国专利申请201110366801. 6中,通过使用计算机程序进行自动优化排列LED位置,形成了一个对LED阵列模组,使其能够在照明面上形成均匀的照度分布。 Chinese patent application 201110366801.6, automatic optimization of the arrangement position of the LED by using a computer program, a form of an array of LED module, it is possible to form a uniform illuminance distribution on the illumination surface. 这种方法对颗数比较少的阵列效果不错,但是对颗数较多的LED阵列,如LED颗数达到几十颗的时候,由于涉及的优化参数较多,优化时间变得非常长,·普通的计算机几乎无法实现。 This method relatively small number of teeth array good results, but more number of pieces of the LED array, such as LED number tens pieces, because of the many parameters involved in the optimization, the optimization time becomes very long, · an ordinary computer almost impossible.

发明内容 SUMMARY

[0003] 本发明的目的提供一种大功率LED阵列集成方法,将多颗LED快速集成一个大功率的LED阵列模组,这个阵列模块在目标平面上实现了照度均匀化。 [0003] The object of the present invention provides an integrated high-power LED array method, a rapid integration of multiple LED array of high power LED modules, the modules in the array to achieve the object plane uniform illuminance. 此方法可以实现任意数目,任意光强分布的LED阵列集成,可以通过计算机程序控制实现自动优化排布集成,增强了工业应用的可操作性。 This method can be implemented in any number, LED array of any integrated light intensity distribution, the control program can be automatically optimized by a computer integrated arrangement enhances the operability of industrial applications.

[0004] 按照本发明提供的技术方案,所述大功率LED阵列集成方法,首先通过数值优化的方法实现LED阵列基本模块的最佳排列,使这些LED阵列基本模块在照明面上照度均匀化,所述LED阵列基本模块包括由4颗、5颗、6颗、7颗LED分别构成的基本阵列;然后将这些基本阵列模块扩展成大规模的LED阵列。 [0004] according to the aspect of the present invention provides a method for integrated high-power LED array, the LED array are arranged firstly optimal base module by a numerical optimization method, these LED array module substantially uniform illuminance on the illumination surface, the LED array includes a base module 4, 5, 6, 7 constitute the basic LED array; then extend these basic modules into large arrays LED array.

[0005] 由基本阵列扩展为大规模阵列时,由基本阵列作为一个母阵列,然后将母阵列沿各方向复制成为新的子阵列,母阵列和子阵列之间共用了一条边。 [0005] When the array is substantially expanded by a large-scale array, the array of the basic array as a master, and the master copy arrays in each direction becomes a common edge between the new sub-arrays, arrays and subarrays mother. 然后将每个新子阵列再作为一个母阵列继续扩展。 Each subarray is then again as a new master array continues to expand. 最后在所述大规模LED阵列中连续选取所需数量的LED子阵列作为一个应用的阵列。 Finally, the large-scale LED array select a number of consecutive LED array as an array of sub-application. 所述的大规模LED阵列是由大于7个LED构成的。 The mass is larger than the LED array composed of seven LED.

[0006] 所述数值优化的方法是指优化照度均匀性评价函数,所述照度均匀性评价函数为照明面上多点照度的方差,照度均匀性评价函数是关于阵列中各LED位置坐标的函数,通过优化LED的位置,实现照度均匀性目标评价函数值最小,即方差最小,即获得照明面上照度的均匀分布。 [0006] The numerical optimization method is to optimize the illumination uniformity refers to the evaluation function, the evaluation function for the illuminance uniformity of illumination of the illuminating surface of the multi-variance, illuminance uniformity evaluation function is a function of the position coordinates of the respective LED array , by optimizing the position of the LED, to achieve uniform illumination of the objective evaluation function value the smallest, i.e. the minimum variance, i.e. to obtain a uniform illuminance distribution of the illumination surface.

[0007] 选择优化算法对所述照度均匀性评价函数进行优化,使目标评价函数值小于要求的最小值,就获得了各LED的最佳位置,所述优化算法采用随机游走算法、粒子群算法、蚁群算法、模拟退火算法、鱼群算法或果蝇算法。 [0007] The selection method for the evaluation of the uniformity of illumination optimization function, the evaluation function value is less than the target minimum required to obtain the optimal position of each LED, the optimization algorithm using a random walk algorithm, Particle Swarm algorithm, ant colony algorithm, simulated annealing algorithm, algorithm or fish Drosophila algorithm. 所述随机游走算法为多目标寻优算法。 The random walk algorithm is a multi-objective optimization algorithm.

[0008] 所述连续选取LED子阵列的过程中,需优先保持子阵列中的LED是连续且对称分布的。 Process [0008] selecting the successive sub-LED arrays, preferentially for an LED holding subarray distributions are continuous and symmetrical.

[0009] 本发明的优点是:本发明先优化几个小颗数的阵列模块作为基本阵列,最后按照一定方法将这些基本阵列集成为一个大颗数的LED模组。 [0009] The advantage of the present invention are: the present invention is to optimize the number of several small pieces of the basic array as array modules, according to a certain method for the last of these arrays are integrated into a substantially large number of pieces of the LED module. 使用数值优化方法优化颗数较少的几个基本阵列模块就可以集成任意颗数的LED阵列。 Using the numerical optimization method for optimizing the number of smaller particles of several basic modules can be integrated array of any number of pieces of the LED array. 这种方法快速,简单且实现自动化排列;特别是在颗数非常大的时候,优势非常明显。 This method is rapid, simple and automated arrangement; in particular, the number of stars is very large, very obvious advantages.

附图说明 BRIEF DESCRIPTION

[0010] 图I为本发明的实施流程图。 [0010] Embodiment I of the present invention, the flowchart of FIG. [0011] 图2(a)为用优化的随机游走方法模拟的五颗LED照度均匀排布阵列图。 [0011] FIG. 2 (a) is a LED illuminance five random walk method for optimizing a simulated uniform arrangement of the array of FIG.

[0012] 图2(b)为用优化的随机游走方法模拟的六颗LED照度均匀排布阵列图。 [0012] FIG. 2 (b) is a random walk method for optimizing a simulated illumination uniformity six LED array arrangement of FIG.

[0013] 图2(c)为用优化的随机游走方法模拟的七颗LED照度均匀排布阵列图。 [0013] FIG. 2 (c) is a LED illuminance seven random walk method for optimizing a simulated uniform arrangement of the array of FIG.

[0014] 图3(a)为五颗LED基本阵列单元按向量移动以形成一个大规模阵列的示意图。 [0014] FIG. 3 (a) is substantially five LED array unit moved by vector to form a schematic diagram of a large scale array.

[0015] 图3(b)为六颗LED基本阵列单元按向量移动以形成一个大规模阵列的示意图。 [0015] FIG. 3 (b) is substantially six LED array unit moved by vector to form a schematic diagram of a large scale array.

[0016] 图4(a)为本发明实施例的五颗LED基本阵列集成的大规模阵列集成面。 [0016] FIG. 4 (a) five basic LED array embodiment of an integrated large-scale integrated array of surface present invention.

[0017] 图4(b)为本发明实施例的六颗LED基本阵列集成的大规模阵列集成面。 [0017] FIG. 4 (b) substantially six LED array embodiment of an integrated large-scale integrated array of surface present invention.

[0018] 图4(c)为本发明实施例的七颗LED基本阵列集成的大规模阵列集成面。 [0018] FIG. 4 (c) seven basic LED array embodiment of the integrated scale integration plane array embodiment of the present invention.

[0019] 图5为在LED集成面上圈选9颗LED作为子阵列的组合排布。 [0019] FIG. 5 is a circle in the LED 9 of LED array as a sub-surface of the integrated combination arrangement.

具体实施方式 Detailed ways

[0020] 下面结合附图和实施例对本发明作进一步说明。 Drawings and embodiments of the present invention will be further described [0020] below in conjunction.

[0021] 本发明的思路是:先进行较少数目的LED阵列优化排列,使其照度均匀化,把这些优化好的阵列称为基本模块(基本模块包括了,4,5,6,7颗LED分别构成的阵列模块)。 [0021] The idea of ​​the present invention are: to carry out a smaller number of LED arrays arranged in optimization, so that uniform illumination, these arrays are called good optimization base module (basic module include, 4,5,6,7 stars each LED array module configuration). 优化这些基本模块的排列,采用随机游走算法、粒子群算法、蚁群算法、模拟退火算法、鱼群算法或果蝇算法。 Optimization of these basic modules are arranged, the random walk algorithm, Particle Swarm Optimization, Ant Colony Algorithm, Simulated Annealing algorithm, algorithm or fish Drosophila algorithm. 然后用计算机将这些LED阵列基本模块进行大规模集成。 The computer then used the LED arrays of these basic modules large scale integration. 在大规模集成阵列里面,可圈选所需要数目的LED阵列作为一个子阵列进行应用。 In large-scale integrated array which can circle the number of required LED array as a sub-array applications. 在圈选子阵列的过程中,尽量保持子阵列中的LED是连续且对称分布的,LED阵列集成过程如图I所示。 During circle subarray, the subarray keep LED is continuously distributed and symmetrically, LED array integrated process I as shown in FIG.

[0022] 如图I所示,本发明首先是利用数值优化方法实现LED阵列基本模块的最佳排布,其中采用的照度均匀性评价函数为照明面上多点照度的方差。 [0022] FIG I, the present invention is to achieve the first LED array module substantially optimal arrangement of numerical optimization method, a uniform illumination of the evaluation function is employed wherein the multi-surface lighting illuminance variance. 在程序运行时,通过合理优化基本模块中的各LED的位置,实现照度均匀性目标评价函数值最小,即方差最小,即可以获得照明面上照度的均匀分布。 The program runs through the rational optimization of the basic position of each LED module to achieve a uniform illumination of the objective evaluation function value the smallest, i.e. the minimum variance, i.e., illuminance distribution can be obtained uniformly illuminated surface. 然后将这些LED基本阵列模块扩展成大规模的阵列,再在这个大规模阵列中连续选取所需数量的LED子阵列作为一个应用的阵列。 These are then expanded into LED-array modules substantially large array, then this large scale continuous array select the desired number of LED array as an array of sub-application. 所述的大规模LED阵列是由大于7个LED构成的。 The mass is larger than the LED array composed of seven LED.

[0023] 优化过程就是使照明面照度均匀性评价函数值最小,即照明面上各点照度方差最小,即均匀度提高的过程。 [0023] The optimization process is the uniformity of the illuminance of the illumination surface the minimum evaluation function value, i.e., the minimum variance of the illumination of each surface point of illumination, i.e., improved uniformity of the process. 优化的具体实施过程如下:选择合理的优化算法(如随机游走算法,粒子群算法,蚁群算法,果蝇算法等)对目标评价函数进行优化,使目标评价函数函数值小于要求的最小值,这样就可以获得各LED的最佳位置。 Optimization of the specific implementation process is as follows: Select the rational optimization algorithms (such as random walk algorithm, Particle Swarm Optimization, Ant Colony Algorithm, Drosophila algorithm) to optimize the objective evaluation function, the evaluation function is a function of the target value is less than the minimum required , so that you can get the optimum position of each LED. 在获得LED的最佳位置之后,将LED阵列光源按计算获得位置进行排布,在光线仿真与分析软件,基于蒙特卡洛方法进行分析,来验证实验结果。 After the optimum position of the LED, the LED array light source is obtained by calculating the position for arrangement in the light simulation and analysis software for analysis based on the Monte Carlo method, to verify the results. 常用的分析软件Tracepro, ASAP, Lightools等。 Common analytical software Tracepro, ASAP, Lightools and so on.

[0024]以下以随机游走算法为例,介绍随机游走优化LED基本阵列模块的过程。 [0024] In the following the random walk algorithm, for example, describes a random walk process to optimize the basic LED array module. 随机游走算法是一种基于运用[O,I]区间的均匀分布随机数序列来进行的计算,非常适用于处理非线性优化问题。 Random walk algorithm is a calculation based on the use of [O, I] uniformly distributed random number sequence to the section, is suitable for nonlinear optimization problem. 使用随机游走算法进行优化照度均匀性需要以下几个步骤: Using a random walk algorithm to optimize the illumination uniformity requires the following steps:

I建立评价函数。 I established evaluation function.

[0025] 评价函数是用来判断目标游走到某个位置优劣的标准,是进行随机游走的唯一依据,评价函数就是照度均匀性的评价函数。 [0025] The evaluation function is used to determine the standard position to a target migration merits, is the only basis of a random walk, the evaluation function is an evaluation function of illumination uniformity.

[0026] 2目标初始化。 [0026] 2 object initialization.

[0027] 随机游走算法需要对所需优化的目标选取初始位置(这里对应于LED初始位置),原则上讲,从任何一个初始位置出发均可找到目标函数最小值,但是为了减小优化时间,最好是要选择一个合适的初始位置,这个初始位置应当是在游走范围内所要求的几率分布密度最大的区域。 [0027] The random walk algorithm needs to select the desired optimization target initial position (here corresponding to the initial position LED), in principle, from any initial position can be found a minimum objective function, but in order to reduce the optimization time , is best to choose a suitable initial position, the initial position should be within the probability distribution required to walk a maximum range of areal densities.

[0028] 3设置游走步长。 [0028] step 3 disposed walk.

[0029] 为目标游走设置游走步长,每次游走的方向及距离由随机产生的权值决定。 [0029] The migration target disposed walk step, each time the migration of the right direction and the distance determined randomly generated value. 择选择适当权值大小的原则是要在游走的试探过程中,有1/3到1/2的试探步子将被接受。 Select the appropriate size of the value of the right to choose principle is to walk in the test process, there are 1/3 to 1/2 tentative steps it will be accepted.

[0030] 4选择操作。 [0030] 4 selecting operation.

[0031] 选择操作是:选定目标初始值后得到一个评价函数的始值,每游走一步产生一个新的函数值,并与前一值比较,选择较小值作为当前函数最优值。 [0031] The selection operation is: to give a certain evaluation function after the initial values ​​for the selected initial value, each walk step function generates a new value, and compared with the previous value, selects the smaller current value as the optimal value function. 逐次游走直至游走结束。 Successive walk until the end of the walk.

[0032] 5最优值的选定。 [0032] 5 selected optimal value.

[0033] 如果在规定的迭代次数内都找不到更优的值,则认为最优解在以当前最优解为中心,当前步长为半径的球内,这时将步长减半。 [0033] If you can not find better values ​​in the predetermined number of iterations, the optimum solution is considered optimum in the current as the center, the current step is the ball radius, then the step size is halved. 返回到初始值位置,再开始新一轮的行走。 Returns to the initial position value, and then start a new round of walking.

[0034] 6非线性寻优。 [0034] 6 non-linear optimization.

[0035] 随机游走算法游走一定次数后,以所得到结果为初始值,进行局部寻优,并把寻优找到的局部最优值作为新的初始值并继续游走,直到最后找到目标函数所要求的位置,也就是找到了均匀性评价函数最小值对应的LED位置坐标。 [0035] After the random walk algorithm walk a certain number of times to obtain the result as an initial value, for local optimization, and optimization of the local optimum found as a new initial value and continues to walk, to find the target until the last function of the desired position, i.e. the position coordinates of the LED found uniformity evaluation function corresponding to the minimum. 如图2(a) (b) (c)所示分别为用优化的随机游走方法模拟的五颗、六颗、七颗LED照度均匀排布阵列图。 FIG. (A) (b) (c) are a random walk method for optimizing a simulation shown in Figure 2 five, six, seven uniform illumination LED array arrangement of FIG.

[0036] 如果采用其它算法,其实施过程与随机游走算法的实施过程也类似,把照度均匀化评价函数与每种算法的目标评价函数相对应,把LED位置坐标作为目标评价函数的变量,通过算法的实施,优化变量的位置坐标得到目标评价函数的最小值。 Implementation [0036] If other algorithms, and its implementation is also similar to the random walk algorithm, the uniform illumination of the objective evaluation function of each of the evaluation function corresponds to the algorithm, the position coordinates of the LED as the objective evaluation function of the variable, through the implementation of the algorithm, the position coordinates of optimization variables to obtain the minimum evaluation function of the objective.

[0037] 下面介绍实现LED阵列集成的方法。 [0037] The following describes the implementation of an integrated LED array method.

[0038] 选择LED排布的集成面所在平面作为坐标面,建立平面坐标系。 [0038] LED arrangement selection integration plane as the plane coordinate plane, the establishment of a plane coordinate system. 将LED基本阵列(如5颗阵列)作为集成面的一个母阵列,母阵列的中心位置设置在坐标原点。 The basic LED array (e.g., array 5) as a master integrated array plane, the center position of the master array disposed in the coordinate origin. 在LED排布平面内,将母阵列将按照一定方向复制,保证产生的新阵列与母阵列共用一条边。 LED arranged in a plane, the master copy in a certain direction of the array, a new array is guaranteed to produce the parent array share an edge. 然后将每个新子阵列再作为一个母阵列继续扩展。 Each subarray is then again as a new master array continues to expand. 图3所示为一个由基本阵列扩展为大规模阵列的示意图。 Substantially as an extension of a large scale array the array 3 shows a schematic view. 图3 Ca)由五颗基本阵列单元扩展成一个大规模阵列的示意图;图3 (b)由六颗基本阵列单元扩展成一个大规模阵列的示意图;图3 (c)由七颗基本阵列单元扩展成一个大规模阵列的示意图。 FIG 3 Ca) extended by the array element into five basic schematic diagram of a large scale array; FIG. 3 (b) is a schematic view of a massive array of substantially expanded from six to array unit; FIG. 3 (c) by the seven basic array unit a schematic view of a large-scale expansion into the array. 图4(a),(b), (c)分别为由五、六、七颗LED基本阵列构成的大规模LED阵列。 FIG. 4 (a), (b), (c), respectively, by five, six, seven large-scale LED array configuration of LED array substantially. 图5示意了如何从大规模LED阵列中选取任意颗数的应用阵列。 5 illustrates how to select an arbitrary array of applications from large-scale number of stars in the LED array.

Claims (7)

1.大功率LED阵列集成方法,其特征是:通过数值优化的方法实现LED阵列基本模块的最佳排列,使这些LED阵列基本模块的照度均匀化,所述LED阵列基本模块包括由4颗、5颗、6颗、7颗LED分别构成的基本阵列;然后将这些基本阵列模块扩展成大规模的LED阵列,再在所述大规模LED阵列中连续选取所需数量的LED子阵列作为一个应用的阵列。 1. High-power LED array integrated process, characterized in that: the best arrangement of the basic module of the LED array by means of numerical optimization, these illuminance substantially uniform array of LED modules, the LED array comprises four base modules, 5, 6, 7 constitute the basic LED array; basic array module then expanded into large-scale LED array, and then select a continuous mass in the number of LED in LED array as an array of sub-application array.
2.根据权利要求I所述的大功率LED阵列集成方法,其特征在于,所述的大规模LED阵列是由大于7个LED构成的。 The high-power LED array integrated process according to claim I, wherein the mass is larger than LED array composed of seven LED.
3.根据权利要求I所述的大功率LED阵列集成方法,其特征在于,所述数值优化的方法是指优化照度均匀性评价函数,所述照度均匀性评价函数为照明面上多点照度的方差,通过优化LED的位置,实现照度均匀性目标评价函数值最小,即方差最小,即获得照明面上照度的均匀分布。 The high-power LED array integrated process according to claim I, characterized in that the numerical optimization method is to optimize the illumination uniformity refers to the evaluation function, the evaluation function for the illuminance uniformity of illumination of the illuminating surface of the multi- variance, by optimizing the position of the LED, to achieve uniform illumination of the objective evaluation function value the smallest, i.e. the minimum variance, i.e. to obtain a uniform illuminance distribution of the illumination surface.
4.根据权利要求3所述的大功率LED阵列集成方法,其特征在于,选择优化算法对所述照度均匀性评价函数进行优化,使目标评价函数函数值小于要求的最小值,就获得了各LED的最佳位置,所述优化算法采用随机游走算法、粒子群算法、蚁群算法、模拟退火算法、鱼群算法或果妮算法。 4. The high-power LED array integrated process according to claim 3, characterized in that the selection method of the illuminance uniformity of the evaluation function to optimize the objective function value is less than the minimum evaluation function required, it is obtained for each the optimum position of the LED, the optimization algorithm using a random walk algorithm, particle swarm optimization, ant Colony algorithm, simulated annealing algorithm, the algorithm fish or fruit Ni algorithm.
5.根据权利要求4所述的大功率LED阵列集成方法,其特征在于,所述随机游走算法为多目标寻优算法。 The high-power LED array integrated process as claimed in claim 4, wherein the random walk algorithm multi-objective optimization algorithm.
6.根据权利要求I所述的大功率LED阵列集成方法,其特征在于,所述大规模LED阵列是由照度均匀的LED阵列基本模块构成;由基本阵列扩展为大规模阵列时,由基本阵列作为一个母阵列,然后将母阵列沿各方向复制成为新的子阵列,母阵列和子阵列之间共用了一条边,然后将每个新子阵列再作为一个母阵列继续扩展。 The high-power LED array integrated process according to claim I, wherein said LED array is composed of a large-scale uniform illuminance LED array basic module; when the array is substantially expanded by the large scale array by an array of substantially as a master array, and then become the master copy of each array in a common direction, a new edge between the sub-arrays, arrays and subarrays parent, then each new sub-array in an array as a master continues to expand.
7.根据权利要求I所述的大功率LED阵列集成方法,其特征在于,所述连续选取LED子阵列的过程中,需优先保持子阵列中的LED是连续且对称分布的。 The high-power LED array integrated process according to claim I, wherein the continuous process of selecting the sub-LED arrays, preferentially for an LED holding subarray distributions are continuous and symmetrical.
CN2012101840568A 2012-06-05 2012-06-05 Integrated method of high-power light-emitting diode (LED) arrays CN102683337A (en)

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