Passive coupling method and device of optical assembly and photoelectric module

The invention provides a passive coupling method and device of an optical assembly and a photoelectric module, the optical assembly and the photoelectric module are arranged in the first direction, images of the optical assembly and the photoelectric module are obtained in the second direction, the optical assembly and the photoelectric module are corrected according to the shot images, the distance between the optical assembly and the photoelectric module is calculated, and the optical assembly is moved to complete preliminary coupling; images of the optical assembly and the photoelectric module after preliminary coupling are shot from the side face in the first direction, the shot side face images are used for adjusting the optical assembly, and coupling of the optical assembly and the photoelectric module is completed. According to the invention, blind search time is saved, a drive circuit is not needed, and parts are saved; the step of passive coupling is simplified, and coupling can be completed on vario