为了探究多基色激光显示系统的彩色散斑特性，采用蒙特卡洛的统计方法模拟了彩色散斑的空间分布。在CIE-u′v′色品图中，定义了彩色散斑椭圆的简化模型，描述了显示系统的彩色散斑空间分布，分析了不同基色数目和波长组合对彩色散斑的影响。结果表明，该椭圆随着基色数目的增加而缩小，彩色散斑严重程度下降; 三基色系统的椭圆面积为16.0×10-4，而六基色系统的椭圆面积为6.81×10-4,其中绿基色对彩色散斑的影响最大; 在多基色显示系统中，对于给定白平衡点的各基色亮度配比不唯一，因此在颜色表现和散斑现象之间存在权衡，当减小散斑对比度值较大的基色亮度的权重时，将减弱彩色散斑现象。该研究为多基色激光显示系统的彩色散斑评估提供了理论指导。

In order to investigate the color-speckle characteristics in multi-primary laser display systems, the spatial distribution of color speckles was simulated by a Monte Carlo method. In the CIE-u′v′ chromaticity diagram, a simplified ellipse model of color speckles was defined to describe the spatial distribution of color speckles in the display system intuitively. The effects of the number and different wavelength combinations of primary colors on color speckles were analyzed. The results show that with the increase in the number of primary colors, the ellipse becomes smaller, and the color speckle is reduced. The ellipse area of the three-primary system is 16.0×10-4, while that of the six-primary system is 6.81×10-4. Especially, the green primary has the greatest effect on color speckles. In the multi-primary display system, the brightness ratio of each primary color is not unique for a given white point, so there is a tradeoff between the color performance and speckle phenomenon. When the brightness weight of the primary color with a large speckle contrast value is reduced, the color speckle phenomenon will be alleviated. This study can provide theoretical guidance for color speckle evaluation of multi-primary laser display systems.