利用单个LED芯片的照度公式推导出LED方形阵列的照度公式和光斑的散射角公式, 利用推导出的公式研究了LED方形阵列的照度峰值和光斑散射角随芯片数、方形阵列的结构参数以及目标距离的变化关系。得出了这三种情况下照度峰值和光斑散射角的变化规律。这些规律为利用LED方形阵列来实现照明设计提供了定量的理论依据。

Using the single LED illumination formula, the illumination formula and the divergence angle formula of LED square array were deduced. The variations of the peak illumination and the divergence angle of LED square array with the number of LED and the structural parameters and the target distance were studied. The changing rules of the peak intensity of illumination and the divergence angle were derived. The principles provide a theoretical basis for the lighting design using LED square array.