导光板(LGP)作为液晶显示(LCD)技术的背光源，已得到了广泛的应用。导光板材料的反射面有大量反射点，目前照明用导光板多采用丝网印刷或激光雕刻制备这些反射点。丝网印刷的油墨反射点容易老化脱落，激光雕刻的优势在于更具个性化，生产灵活且环保等，是今后的发展趋势。传统激光雕刻方式效率低，且缺乏工艺优化。提出一套基于后动态聚焦振镜系统的激光打点方法及相应的工艺优化方法，该方法加工效果优异，加工效率显著提高。

The light guide plate (LGP) as the backlight of the liquid crystal display (LCD), has been applied widely. The manufacturing principle arranging the reflection point on the surface of the the LGP material. Currently LGP for lighting is manufactured by screen printing and laser engraving. Laser engraving is more personalized, flexible and green, but the traditional laser engraving way, whose efficiency is too low, is lack of processing optimization. A methodology of laser dots marking that based on dynamic focus galvanometer system is proposed.The corresponding process optimization method is developed. It improves the effectiveness and efficiency of processing significantly.