Comparative analysis of the collimation effect of three lenses in the illumination system of laser active imaging

摘要

The illumination system used for laser active imaging has higher requirements for the divergence angle of the semiconductor laser. In this paper, ZEMAX is used to simulate the collimation effect of cylindrical lens, aspheric lens, and self-focusing lens, analyze the influence of distance and angle deviation on the collimation effect of cylindrical lens, aspherical lens, and self-focusing lens, and further simulate and use the three lens lighting system which is used for the lighting effect of laser active imaging. The results show that: compared with cylindrical lenses and self-focusing lenses, aspheric lenses are less affected by distance and angle deviation; in the illumination system of laser active imaging, the divergence angle of aspheric lenses is small, and the illumination effect is better. Aspheric lenses are more suitable for the collimating system used in laser active imaging.