本文针对太阳帆板平面度测量这一特定要求 ,开发出了一种基于激光三角原理的特殊结构的光电非接触平面度测量系统。该系统摒弃了传统的大面积工件平面度测量所需要的高精度导轨等实物基准 ,而是通过在计算机中建立高精度的虚拟基准 ,达到了对太阳帆板平面度的高精度测量 ,并对这种特殊的仪器结构所造成的光斑特性进行了分析 In this paper, aiming at the specific requirement of solar flatness measurement, a special structure photoelectric non-contact flatness measurement system based on the principle of laser triangulation has been developed. The system abandons the physical benchmark such as the high-precision guide rail that the traditional large-area workpiece flatness measurement needs, but achieves the high-precision measurement of the flatness of the solar panel by establishing a high-precision virtual reference in the computer. This special instrument structure caused by the spot characteristics were analyzed