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.