Abstract
In order to meet the design requirements of low weight and high specific stiffness for a small space camera lens assembly, based on the compact coaxial four-mirror optical system, a dynamic optimization design concept is proposed firstly, and then the initial lightweight design of lens structure is realized in an integrated assembly form. And then the BP neural network & genetic algorithm is used to dynamically optimize the lens structure parameters, which reduces the weight of the whole lens while ensuring the high specific stiffness of the lens, and realizes the goal of lens lightening design.
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