| 超短焦全景鱼眼镜头的研究与设计 |
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| 引用本文： | 陈圣聪,林峰. 超短焦全景鱼眼镜头的研究与设计[J]. 光电工程, 2012, 39(2): 48-52 |
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| 作者姓名： | 陈圣聪 林峰 |
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| 作者单位： | 陈圣聪:福建师范大学物理与光电信息科技学院 医学光电科学与技术教育部重点实验室，福州 350007
林峰:福建师范大学物理与光电信息科技学院 医学光电科学与技术教育部重点实验室，福州 350007
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| 摘 要： | 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。
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| 关 键 词： | 光学设计 鱼眼镜头 像素空间 分辨率 |
| 收稿时间： | 2011-08-22 |
Research and Design of Super Short-focus Panoramic Fish-eye Lens |
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| CHEN Sheng-cong,LIN Feng. Research and Design of Super Short-focus Panoramic Fish-eye Lens[J]. Opto-Electronic Engineering, 2012, 39(2): 48-52 |
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| Authors: | CHEN Sheng-cong LIN Feng |
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| Affiliation: | ( Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China ) |
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| Abstract: | 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. |
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| Keywords: | optical design fish-eye lens pixel space resolution |
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