折衍混合单透镜替代双胶合望远物镜的设计研究  

Study on the Design of the Hybrid Singlet to Replace the Refractive Doublet

作　　者：赵丽萍[1] 邬敏贤[1] 

机构地区：[1]清华大学精密仪器系精密测试技术与仪器国家重点实验室

出　　处：《光学学报》1998年第2期223-227,共5页Acta Optica Sinica

基　　金：国家自然科学基金

摘　　要：提出了一种用以替代双胶合望远物镜的折衍混合单透镜的设计方法。由于一般望远物镜相对孔径较大、视场较小，故其球差和色差较大，校正要求高，而与视场有关的像差本身较小。通过分析初级像差，本文研究了折衍混合单透镜的折射器件（基底）选型、初始结构设计及消色差和球差的方法，仅采用一种玻璃材料Ｋ９，设计的折衍混合单透镜具有与原传统结构相当的色差和降低了约一半的单色像差，能成功地取代传统双胶合物镜；展示了折衍混合结构在可见光波段的应用前景。The design of a diffractive reflective hybrid singlet is presented to replace a conventional doublet telescope objective. As the telescope objective has a large relative aperture (1/2.5) and a small filed of view, its spherical and lateral chromatic aberrations are high and should be corrected, while its aberrations relative to the field of view, such as astigmatism and distortion, are natually small. According to the analyzation of the primary aberrations of a hybrid singlet with a plano convex substrate, the design method of the original configration is studied. A hybrid singlet in visible band (λ from 656.3 nm to 486.1 nm) is successfully designed. In comparison with the traditional construction, this hybrid singlet, with much smaller monochromatic aberrations and nearly equal chromatic aberrations, has lower weight, greatly simplified configuration and only one material K9 used. It shows that the application of hybrid singlets in visible band is promising.

关 键 词：透镜 折衍混合单透镜 双胶合透镜 望远物镜 

分 类 号：TH74[机械工程—光学工程]