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| 鱼眼镜头光学系统的优化方法 |
| Optimization method of optical systems of fisheye lens |
| 投稿时间：2015-01-21 |
| DOI：10.3969/j.issn.1005-5630.2015.05.007 |
| 中文关键词: 光学设计 鱼眼镜头 平面对称 非球面 像差 |
| 英文关键词:optical design fisheye lens plane symmetry aspheric surface aberrations |
| 基金项目:国家自然科学基金项目(11274223)上海市教委创新基金项目(12ZZ088) |
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| 中文摘要: |
| 在鱼眼镜头成像系统中,光线以很大的入射角打在前组透镜表面时往往会造成严重的像差,为了压缩超大视场角,提出应用非球面前组负弯月型透镜来控制鱼眼镜头系统的像差。基于光学前组具有平面对称的成像特性,应用平面对称光学系统像差理论发展的评价函数,对非球面系数及其他的系统结构参数进行优化设计。应用评价函数及Zemax光线追迹成像模拟对优化系统进行评估。研究表明,应用非球面组负弯月型透镜能够显著地提高鱼眼镜头的成像质量。 |
| 英文摘要: |
| To reduce the ultra-wide field angle, a pre-optics group that consists of several negative meniscus lenses of large power in a fisheye lens is used. The large incidence angle of light at these negative meniscus lenses will result in very serious aberrations. In the paper, the aspheric pre-optics design is proposed to control the aberrations of fisheye system. Based on the plane-symmetry imaging properties of the pre-optics, the evaluation function developed with the aberration theory of plane-symmetry optical systems is applied to optimize the aspheric coefficients of pre-optics surface as well as other parameters of the optical system. The imaging performances of different design options are evaluated with the evaluation function and ray-tracing simulation of Zemax.The results show that the fisheye lens optimized with aspheric pre-optics has significantly better imaging quality. |
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