摘要
针对小型化反射式光学系统的设计要求,采用新型的离轴三反光路形式和自由曲面,实现了F#为1.8,对角线视场角7.5°的紧凑型自由曲面离轴三反系统,光线在系统内多次重叠,系统波像差全视场平均值为0.017λ(λ=10μm)。相比非球面离轴三反系统,该系统具有体积小、透过率高、大视场、无中心遮拦、多波段成像等优点。
Aiming at the design requirement of miniature reflective optical system,the new off-axis three-mirror optic path and freeform surface were adopted,the compact freeform three-mirror was realized with 1.8 F#and 7.5°diagonal field of view(FOV).The light overlaps multiple times in the system,and the full FOV average of the system wave aberration is 0.017λ(λ=10μm).Compared with the aspherical off-axis three-mirror system,the system has the advantages of small size,high transmittance,large FOV,no central obscuration,and multi-band imaging,etc.
引文
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