Laser communication terminal is the key point of the satellite laser communication system. In order to improve thepointing and tracking efficiency, an afocal off-axis optical system was designed for laser communication Terminal. Sothe precise alignment an afocal mirror telescope of all-reflective off-axis optical system is great significance. In thispaper, computer-aided alignment methods utilizing Zernike polynomial coefficients have been developed for an afocalmirror telescope. The misalignment state is simulated in CODEV and computer-aided alignment software. The relationof component deflexion and the place of exit pupil have been simulated by computer model reverse optimization. At awavelength of 632.8nm, the main characteristics are a WFE of ≤0.035nm. These results show that it can meet theprecision requirement and accelerate the convergence of misalignment variables. Ultimately, the image quality andprecision of exit pupil was effective operated according to the request of satellite laser communication system.
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