着重分析了超短焦鱼眼镜头焦距与分辨率的关系，表明了像面尺寸一定的前提下焦距越短，全景展开的环景边缘分辨率越高。基于以上理念，依据超短焦全景镜头设计思路，设计了一款焦距像高比≤0.35，水平视场角 =360°，垂直视场角 ≥180°的全景鱼眼镜头。设计结果表明：在空间频率为 200 lp/mm处的 MTF值大于 0.4，接近衍射极限；在垂直半视场角 45°～90°的环景边缘区域拥有大于 75%的像素空间，使得环景展开后仍然具有较高的分辨率，从而代替多台不同方位的高解摄像机，实现高清全景监控。

The relationship of super short-focus panoramic fish-eye lens’ focus and resolution was studied comprehensively. It is proved that the shorter the focus, the higher the resolution of scenic circle area. A panoramic fish-eye lens is presented, whose ratio of focus and image height is less than 0.35, horizontal field is up to 360° and vertical field is more than 180°. The results show that the spatial pixel of scenic circle area with half vertical field 45-90 degree is up to 75%, and the modulation transformation function is greater than 0.4 at the spatial frequency of 200 lp/mm. Its imaging quality is very well, its resolution of stretching the scenic circle is very high, and it works for panoramic monitor and high definition.