Assembly performance analysis of reflective optical systems based on digital twin

As an important technology for realizing national strategies such as intelligent manufacturing and industrial 4.0, digital twin (DT) has received great attention from scholars and enterprises. At present, it has been applied to vehicles, ships, spacecraft, satellite, machining process and other fields, but there is no research report in the field of optical manufacturing. Aiming at this problem, and taking the reflective optical systems as the object, the applications of DT were discussed from the lifecycle dimension, including design and development, manufacturing and assembly, operation, and maintenance, et al. On this basis, taking the construction of the optical DT model as an example, the modelling methods of machining error and assembly error were mainly studied, the applications of the DT in computer-aided alignment and active optics were discussed, which demonstrate the importance of DT technology in the manufacturing process of reflective optical systems.