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首页> 外文期刊>Journal of Modern Optics >Design of a compact off-axis two-mirror freeform infrared imager with a wide field of view
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Design of a compact off-axis two-mirror freeform infrared imager with a wide field of view

机译：设计具有宽视野的紧凑型离轴双镜式自由形式红外成像仪

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摘要

With the development of modern precision optical fabrication and measurement technologies, optical freeform surfaces have been widely employed in different applications, especially in off-axis reflective optical systems. For an infrared optical system operating in the long-wavelength spectrum, compactness, brightness, and a wide field of view are key requirements for military surveillance or scene sensing. In this paper, we present an off-axis two-mirror freeform infrared imager with compactness and brightness. It has a large pupil of size 12 mm and a fast focal ratio of 2.2 over a wide 23 degrees diagonal field of view, as well as good image quality. XY-polynomial freeform surfaces are applied to the viewing mirror and focusing mirror. The multiple degrees of freedom of optical freeform surfaces are very helpful for off-axis aberration correction and improving the optical performance over the entire pupil across the full field of view. The overall dimension of our designed freeform infrared imager is about 30 mm by 30 mm by 30 mm, which is elegantly miniaturized. The final designed results of a reflective freeform infrared imager are demonstrated and discussed in detail.
机译：随着现代精密光学制造和测量技术的发展，光学自由形表面被广泛用于不同的应用，特别是在轴外反射光学系统中。对于在长波长光谱，紧凑性，亮度和广视场中操作的红外光学系统是军事监测或场景感测的关键要求。在本文中，我们介绍了一个带有紧凑性和亮度的轴上的双镜式自由形式红外成像器。它具有12毫米的大瞳孔，快速焦平为2.2，在宽的23度对角线视野中，以及良好的图像质量。 XY-多项式自由外表面施加到观察镜和聚焦镜上。多次光学自由形状表面的自由度非常有助于离轴异常像差校正，并在整个视野上提高整个瞳孔的光学性能。我们设计的自由形式红外成像仪的整体尺寸约为30毫米30毫米30毫米，这是典雅的小型化。对反射自由形式红外成像器的最终设计结果进行了详细说明和讨论。

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  • 来源
    《Journal of Modern Optics》 |2019年第3期|共8页
  • 作者

    Ye Jingfei; Yu Jun; Song Zhenzhen; Pei Shixin; Yuan Qun; Gao Zhishan; He Yu;

  • 作者单位

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Nanjing Jiangsu Peoples R China;

    Tongji Univ Sch Phys Sci &

    Engn Shanghai Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Nanjing Jiangsu Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Nanjing Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Elect &

    Opt Engn Nanjing Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Elect &

    Opt Engn Nanjing Jiangsu Peoples R China;

    Chinese Acad Sci Inst Opt &

    Elect State Key Lab Opt Technol Microfabricat Chengdu Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

    Optical design; reflective infrared imager; optical freeform surface; wide field of view;

    机译：光学设计;反射红外成像器;光学自由形状。宽视野;

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