光学仪器, 2015, 37 (5): 407, 网络出版: 2016-01-19
鱼眼镜头光学系统的优化方法
Optimization method of optical systems of fisheye lens
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。
Abstract
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.
牛智全, 吕丽军. 鱼眼镜头光学系统的优化方法[J]. 光学仪器, 2015, 37(5): 407. NIU Zhiquan, L Lijun. Optimization method of optical systems of fisheye lens[J]. Optical Instruments, 2015, 37(5): 407.