交通、船舰、机场等应用领域的信号灯、探照灯容易受到天气因素的影响,本文通过实验比较了不同颜色LED光源在淡水雾和海雾中的穿透性能,并研究了淡水雾中LED光源的透光性与距离的关系.结果显示:各种颜色LED光源在雾中的透射率随距离呈指数关系下降;而且,淡水雾和海水雾中,黄光LED的透过率均为最大.本研究工作为信号灯、探照灯等功能照明提供了设计依据. Traffic, ships, airports and other applications of signal lights, searchlights are vulnerable to weather factors, this paper experimentally compared the different color LED light source penetration in freshwater fog and sea fog, and the study of freshwater fog LED light source Transmissivity and distance.The results show that the transmittance of various color LED light sources in the fog decreases exponentially with distance, and the transmittance of the yellow LED is the highest in the freshwater fog and the seawater fog. Research work provided the design basis for functional lighting such as signal lights and searchlights.