四象限探测器镜头光学质量的检测系统设计

Design of Optical Quality Detection System for Four-quadrant Detector Lens

在激光制导中,四象限探测器镜头的光学质量决定了目标定位的精度。鉴于此,设计一种非接触式检测四象限探测器镜头光学质量的系统,该系统能够对四象限探测器镜头的光学质量进行在线批量检测。首先将激光光源整形扩束准直为平顶光束,然后通过四象限探测器镜头在磨砂玻璃上显像,最后通过非接触式长工作距离的显微物镜成像在探测器上以探测光斑的形状、位置及均匀度。设计结果表明,此系统能够有效单独对四象限探测器镜头的光学质量进行批量检测,从而提高四象限探测器镜头的品控,有助于提升四象限激光制导探测系统的整体质量。

In laser guidance, the optical quality of four-quadrant detector lens determines the accuracy of target positioning. In view of this, a non-contact detection system of the optical quality of the four-quadrant detector lens is designed. The system can detect the optical quality of the four-quadrant detector lens in batches online. First, the laser light source is shaped, expanded, and collimated into a flat-top beam. Then, the image is developed on the frosted glass through the four-quadrant detector lens. Finally, the shape, position, and uniformity of the spot are detected by the non-contact microscopic objective lens with long working distance. The design results show that the system can effectively batch detect the optical quality of the four-quadrant detector lens, thus improving the quality control of the four-quadrant detector lens, and helping to improve the overall quality of the four-quadrant laser guidance detection system.