Abstract: In order to better choose a suitable auxiliary objective lens, this article is based on the working principle of the auxiliary objective lens, starting from both theoretical deduction and experimental simulation, firstly, the structure optimization design of the common double glued auxiliary objective lens is carried out. According to the design requirements, the initial structure of the auxiliary objective lens was reasonably selected, and various aberrations were theoretically deduced. Finally, based on the initial structure and optimization goals, the optical design software OSLO is used to optimize the structure and aberration analysis of the two forms of auxiliary objective lenses. Afterwards, the design of the innovative double cemented-thick meniscus auxiliary objective lens was optimized. The structural parameters of the similar lens in the literature were used as the initial structure of the design. OSLO optical software and design experience were used to optimize the structure and analyze aberrations. And correction. Finally, the two types of auxiliary objectives are compared and analyzed. The results show that the parameters of the two types of auxiliary objectives after optimization can meet the design requirements, but the double-bonded-thick meniscus type auxiliary objective is more suitable for large images. The optical system of the surface.
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