This paper describes principle and general design on rotating deflector of the laser scanner according to application . theory on brushless dc motor is studied and structures of the mechanics and control system have been designed according to special requirements of the rotating laser scanner . the scanning motor developed has been tested synthetically in performance 本论文针对转镜式激光扫描器的应用，实施了转镜式激光扫描器的原理及总体方案设计，对无刷直流电动机的理论进行了探讨，并针对转镜式激光扫描器的特殊要求进行了扫描器的机械结构及其控制系统的结构设计，对研制的扫描电机的性能进行了综合实验。
