由于单颗LED的功率很小，作为照明光源使用时需要采用LED阵列形式。首先推导LED阵列的照度叠加公式，根据叠加公式对阵列进行仿真，以圆形为例分析LED在平面上的均匀分布以及以球表面为例分析LED在曲面上的均匀分布。给出两种LED阵列分布的仿真结果，得出不同阵列的分布特点。指出圆面阵列的照射范围比较集中，此类阵列分布的灯具适用于照射面较小且比较集中的照射领域；球表面上的阵列的照射分布范围比较广，呈圆面，此类阵列分布的灯具适用于照射面较大但照度要求不是很高的照射区域。该结果为LED灯具设计提供了依据。

As the power of a single LED is very small, when it is taken as the illuminating source, it is necessary to use LED array to enhance the brightness and enlarge the luminous area to improve the uniformity of illuminance. The luminous superposition formula of the LED array is derived, and then the LED array is simulated according to the formula. The uniform distribution of LEDs on a plane is analyzed taking the circular distribution as an example and the homogeneous distribution of LEDs on a curved surface is analyzed taking the spherical distribution. The simulation results of two kinds of arrays' characteristics are presented. The distribution features of different arrays were obtained. The array distributions applied to different lamps are achieved and reliable reference for the design of LED lamps is provided.