泽尼克多项式
望远镜
物理
光学
散光
视野
计算机科学
波前
领域(数学)
数学
纯数学
作者
Eric M. Schiesser,Aaron Bauer,Jannick P. Rolland
标识
DOI:10.1364/josaa.36.002115
摘要
When using freeform surfaces in optical design, the field dependence of the aberrations can become quite complex, and understanding these aberrations facilitates the design process. Here we calculate the field dependence of low-order Zernike astigmatism (Z5/6) up to the eighth order in nodal aberration theory (NAT). Expansion of NAT astigmatism terms to the eighth order facilitates a more accurate fit to the Zernike astigmatism data. We then show how this estimated field dependence can be used to quantitatively analyze a freeform telescope design. This analysis tool adds to the optical designer’s arsenal when up against the challenge of designing with freeform optics.
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