Chinese Optics Letters, 2019, 17 (9): 092201, Published Online: Jul. 29, 2019
Design method for freeform reflective-imaging systems with low surface-figure-error sensitivity Download: 872次
220.4830 Systems design 080.4228 Nonspherical mirror surfaces 220.4610 Optical fabrication 080.4035 Mirror system design
Abstract
Freeform surfaces are difficult to manufacture due to their lack of rotational symmetry. To reduce the requirements for manufacturing precision, a design method is proposed for freeform reflective-imaging systems with low surface-figure-error sensitivity. The method considers both the surface-figure-error sensitivity and optical specifications, which can design initial systems insensitive to surface figure errors. Design starts with an initial planar system; the surface-figure-error sensitivity of the system is reduced during construction. The proposed method and another that is irrelevant to figure-error sensitivity are used to design a freeform off-axis three-mirror imaging system. Comparison of the sensitivities of the two systems indicates the superiority of our proposed method.
Yuting Deng, Guofan Jin, Jun Zhu. Design method for freeform reflective-imaging systems with low surface-figure-error sensitivity[J]. Chinese Optics Letters, 2019, 17(9): 092201.