With ingenious structural design, this coupling system provides accurate control of the parallelism between the Box and the Lens. Combined with machine vision, the accuracy of Lens coupling position is improved, the coupling time is greatly reduced, and the position difference introduced by material difference is reduced. Combined with the algorithm, the near-field and far-field switching can be realized, and the collimating Lens can be coupled. Maximum coupling power is achieved. Scanned raw data and test results are saved to the database. The system integrates the automatic dispensing function, which can be used for single-point dispensing and continuous dispensing.