非近轴条件下单球面成像中光程的极值问题EXTREMUM PROBLEM OF OPTICAL PATH IN IMAGING BY A SINGLE SPHERICAL SURFACE UNDER NON-PARAXIAL CONDITIONS
王蕊,杨炳方
摘要(Abstract):
费马原理指出了实际光程总取极值的特点,在此基础上,可以尝试进一步判断具体的极值类型。单球面成像作为曲面成像的典型,在近轴理想成像时,其实际光程取恒定值,但对于非近轴情况实际光程的极值类型,尚未有文献进行专门讨论。本文采用数学上求高阶导数的方法,着重讨论在非近轴条件下,主轴上一给定物点发出的光线经单球面反射或折射后,对应于给定像点的实际光程的极值类型,深化了对非近轴成像及费马原理的理解。
关键词(KeyWords): 费马原理;非近轴条件;极值类型;球面成像
基金项目(Foundation): 河南省自然科学基金资助项目(项目批准号232300421217)
作者(Author): 王蕊,杨炳方
DOI: 10.27024/j.wlygc.2025.08.28.03
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