We made an error of scale in section six of our paper [Opt. Eng., 57(10), 101704 (2018). doi: https://doi.org/10.1117/1.OE.57.10.101704] that resulted in an inappropriate comparison. After properly scaling and optimizing our three mirror telescope design the averaged over the field RMS spot size is 10.4 μm and this represents an improvement of about 26% and not of 40%. We find that the Zf(r) surfaces, the XY polynomial surfaces, and the NURBS surfaces are able to model the mirror system with similar RMS spot size performance.

中文翻译：

---

使用自由曲面设计非轴对称光学系统的方法（勘误表）

我们在论文的第六部分 [Opt. Eng., 57 (10), 101704 (2018)。doi: https://doi.org/10.1117/1.OE.57.1​​0.101704] 导致不适当的比较。在对我们的三镜望远镜设计进行适当缩放和优化后，场 RMS 光斑尺寸的平均值为 10.4 μm，这表示提高了约 26% 而不是 40%。我们发现 Zf (r) 表面、XY 多项式表面和 NURBS 表面能够模拟具有类似 RMS 光斑尺寸性能的反射镜系统。