The precise assembly of optical module is an important part of the building of laser driver, the assembly accuracy and efficiency of optical module impact the building and operating result of the system directly. The research background of this paper is the assembly planning of optical module in large laser driver. This paper research from two aspects, the assembly sequence planning and the assembly process simulation and verification, of optical module. Two assembly sequence planning methods are proposed in this paper. Moreover, the assembly process of large-diameter reflector and frequency conversion module in final optics assembly are simulated and verified by Delmia. The main research contents are as follows. (1) For the characteristic of modularization of optical module, an algorithm of assembly sequence planning by a combination of dynamic programming and genetic algorithms is proposed. Dynamic programming is used to plan the assembly sequence between modules of optical module roughly，and genetic algorithms is used to plan the assembly sequence in modules of optical module detailed. The combination of the two results is the overall assembly sequence. This method takes advantage of the characteristic of modularization of optical module, and improves the efficiency of assembly sequence planning greatly. (2) Based on Graduated NonConvexity and Concavity Procedure (GNCPP) optimization framework, a new assembly sequence planning approach is proposed. The mathematical model of ASP is transformed to matrix form and some parameters are deduced to meet the requirement of GNCCP. The search speed of this method is much faster than conventional approaches for ASP. The experimental data show that the optimization effect of assembly sequence planning method based on GNCCP and genetic algorithms is about the same, but the running time is much less than genetic algorithms. (3) Based on the Delmia software, the assembly process of large-diameter reflector and frequency conversion module in final optics assembly are simulated and verified. We find that the assembly work of optical module in laser driver can be finished basically by the exiting assembly process. However, there some defects that affect the accuracy and efficiency of assembly work of optical module. For these defects, some recommendations for improvement are proposed.
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