González-Acuña Rafael G, Chaparro-Romo Héctor A, Gutiérrez-Vega Julio C
Appl Opt. 2019 Feb 1;58(4):1010-1015. doi: 10.1364/AO.58.001010.
In this paper, an analytical closed-form formula for the design of freeform lenses free of spherical aberration and astigmatism is presented. Given the equation of the freeform input surface, the formula gives the equation of the second surface to correct the spherical aberration. The derivation is based on the formal application of the variational Fermat principle under the standard geometrical optics approximation.
本文提出了一种用于设计无球差和像散的自由曲面透镜的解析闭式公式。给定自由曲面输入表面的方程，该公式给出用于校正球差的第二表面的方程。推导基于标准几何光学近似下变分费马原理的形式应用。
