离轴三镜自由曲面望远镜

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我们报告了基于集成镜（IM）的具有大视场（FOV）的离轴三镜自由曲面望远镜的设计。此设计是作者先前工作的延续。基于像差理论，我们为集成反射镜设计建立了合适的非中继三反射镜初始配置。对于光学自由曲面，我们分析了xy多项式表面的定性像差校正能力，该函数可以提供自由形式表面项系数和像差之间的简单，便捷和用户友好关系，然后将xy多项式表面应用到三级镜上，提高系统优化的自由度。在一个焦距为1200 mm，F值为12，FOV为1°×30°的示例中，分析了公差性能，该系统具有良好的成像性能。此外，还设计并分析了IM结构和光机械支撑结构。验证性设计结果表明，通过多个标准判断，主镜和三镜的集成可以改善光机械性能。总之，主镜和三镜的集成不仅提供了如前所述的对准便利，而且从多个角度改善了系统的光机械性能。我们相信，基于IM的大型线性FOV系统在光学遥感领域具有广阔的未来应用。验证性设计结果表明，通过多个标准判断，主镜和三镜的集成可以改善光机械性能。总之，主镜和三镜的集成不仅提供了如前所述的对准便利，而且从多个角度改善了系统的光机械性能。我们相信，基于IM的大型线性FOV系统在光学遥感领域具有广阔的未来应用。验证性设计结果表明，通过多个标准判断，主镜和三镜的集成可以改善光机械性能。总之，主镜和三镜的集成不仅提供了如前所述的对准便利，而且从多个角度改善了系统的光机械性能。我们相信，基于IM的大型线性FOV系统在光学遥感领域具有广阔的未来应用。

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Off-axis three-mirror freeform telescope with a large linear field of view based on an integration mirror
QINGYU MENG,1,2,* HONGYUAN WANG,1 KEJUN WANG,2 YAN WANG,2 ZHENHUA JI,2 AND DONG WANG2We report on the design of an off-axis three-mirror freeform telescope with a large field of view (FOV) based on an integration mirror (IM). This design is the continuation of the authors’ previous work. Based on aberration theory, we established a suitable nonrelayed three-mirror-anastigmat initial configuration for integration mirror design. For an optical freeform surface, we analyzed the qualitative aberration correction ability of a x-y polynomial surface that can provide a simple, convenient, and user-friendly relationship between freeform surface term coefficients and aberrations and then applied the x-y polynomial surface on the tertiary mirror to improve the system optimization degrees of freedom. In an example with a focal length of 1200 mm, an F-number of 12,and a FOV of 1° × 30°, the tolerance performance was analyzed, and the system presented a good imaging performance. In addition, the IM structure and opto-mechanics support structure were designed and analyzed. The confirmatory design results showed that the integration of the primary mirror and tertiary mirror can improve opto-mechanical properties judged by multiple criteria. In conclusion, the integration of the primary mirror and tertiary mirror not only offers alignment convenience as described previously but also improves system optomechanical properties in multiple perspectives. We believe this large linear FOV system based on IM has broad future applications in the optical remote sensing field. © 2016 Optical Society of America

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Off-axis three-mirror freeform telescope with a large linear field of view based on an integration mirror QINGYU MENG,1,2,* HONGYUAN WANG,1 KEJUN WANG,2 YAN WANG,2 ZHENHUA JI,2 AND DONG WANG2