为了优化变焦镜头的设计过程, 本文提出了基于混合镜组模型的变焦镜头设计方法, 包括近轴设计, 镜组模型确定以及基于混合镜组模型的像差设计。近轴设计阶段采用了高斯括号和矩阵光学, 可以很方便地构建镜组间隔和镜组焦距之间的关系。镜组模型确定阶段是根据现有镜头专利训练了一个镜组分类模型, 它可以根据镜组近轴数据将镜组分为薄透镜模型或者厚透镜模型。像差设计阶段综合了薄镜组模型像差设计和厚镜组模型像差设计。镜组分类模型成功地将80%以上的镜组进行了分类。最后采用基于混合镜组模型设计方法设计了一个物方远心的变焦镜头。结果表明, 该镜头具有良好的设计初值, 基于混合镜组模型的变焦镜头设计方法能减少像差变量数量, 准确、方便地完成像差设计。

To facilitate zoom lens design, a systematic zoom lens design approach, based on mixed lens modules, is proposed in this paper, which consists of paraxial lens design, lens type determination, and aberration design. During paraxial lens design, Gaussian brackets and matrix optics are adopted, with which the relationship between component interval distances and component focal lengths can be easily determined. A lens module classification model is trained, with which the lens type can be determined from its thin lens parameters. More than 80% of the lens components have been successfully classified by the classification model. Mixed lens modules, namely thin lens modules and thick lens modules, are applied for aberration design of lens components, with which the component aberrations can be easily balanced and some practical considerations, such as interval distances between lens elements and components collisions, can be handled simultaneously. At last, an example is provided, which shows the detailed procedure of zoom lens design using mixed lens modules.