为了实现激光均匀照明, 在分析常规匀光技术的基础上设计了新型的激光匀光系统, 并对该系统的匀光技术及光斑均匀性进行研究。新型的匀光系统是利用无刷电机带动光束整形散射器以高于摄像机电子快门的频率旋转, 使多支光束在积分时间内叠加, 形成一个均匀照明效果。新型的匀光系统能够消除激光散斑与干涉条纹, 实现匀光的目的。实验结果表明: 新型匀光系统使激光光斑有效区域内均匀性到达95%以上, 光能利用率为90%。新型匀光系统提高了照明均匀性及光能利用率, 从而提高了被照明目标的成像质量。

In order to achieve laser uniform illumination, a new laser homogenization system was designed based on the analysis of regular homogenization technology, and the homogenization technology and the uniformity of laser illumination were researched. The new homogenization system used brushless motor to drive a light shaping scatterer to rotate at a frequency faster than the electronic shutter of cameras, making multiple light superimposed in integration time to form a uniform illumination effect. The new homogenization system can eliminate laser speckles and interference fringes, and realize the purpose of homogenization. Experimental results show that the new homogenization system makes the illumination uniformity reach up to 95% and the energy efficiency reach up to 90% in the effective area. The new homogenization system improves the uniformity of illumination and utilization rate of laser, thus improves the image quality of the illuminated target.