基于图像处理技术的光纤准直器封装新方法

Novel packaging method for optical fiber collimator based on image processing

运用"可检测性"概念和Design For Test(DFT)方法,提出了一种基于图像处理技术的光纤准直器封装方法。在装配前利用机器视觉和数字图像处理技术保证插针到达正确相位,然后保持插针相位姿态不变插入不锈钢套筒,同时光纤插针做进给运动,以调节插针和自聚焦透镜在不锈钢金属套筒中的间隙,使插针快速地到达最佳装配位置,保证输出光功率最大。该系统主要由CCD摄像机、图像采集卡、系统控制和图象处理软件构成,由计算机控制其装配全过程。实验证明了该系统的有效性和实用性,其相位误差可控制在公差±3°内,满足光纤准直器装配精度要求。该封装方法已应用于生产,较大地提高了生产效率和产品合格率。

On basis of the ＂measurability＂ conception and the Design For Test（DFT） method, a new packaging method for the collimator based on image processing technique was put forward. The compurter vision and digital image processing technique were used to ensure the optical fiber plug to a right phase, and then keep the plug phase intercalating into the stainless steel tube. At the same time, the optical fiber plug feed was moved to adjust the clearance between the plug and GRIN lens in the stainless steel tube to make the plug get to the best assemble place to ensure the optical fiber collimator outputs in maximum light power. The main parts of the system were CCD camera, image board, controlling system and image processing software, and the whole assembly process was controlled by computer. The experimental results show that the system is practical and effective, and the assembly angle tolerance can be controlled less ±3° to satisfy the demand of collimator assembly precision. The packaging method for collimator has been applied to production, which has increased productivity and the qualified rate greatly.