应用多个非球面优化鱼眼镜头的方法

对于鱼眼镜头一类光学系统，其超大视场的物点对于光学系统的成像，是符合平面对称光学系统的成像规律的。应用LU发展的平面对称光学系统的波像差理论，研究如何在鱼眼镜头光学系统中应用非球面对成像系统进行优化设计。首先，通过计算各个光学面的非球面系数对超大视场光学系统波像差的影响，找到受非球面系数变化影响最大的几个光学面；然后，以这几个面的非球面系数为变量，以光学系统调制传递函数作为评价函数，应用自适应归一化实数编码遗传算法，优化设计鱼眼镜头光学系统；最后，通过实例验证了所提出方法的有效性。所提出的方法可以有效地确定一个或多个最佳非球面的位置，对优化设计鱼眼镜头系统具有指导意义。

A method for optimizing fisheye lenses by applying multiple aspheric surfaces

For optical systems such as fisheye lenses, the object point of the super-large field of view conforms to the imaging law of the plane-symmetric optical system. This paper applies the wave aberration theory of plane symmetry optical system developed by LU to study how to optimize the aspheric imaging system in the optical system of the fisheye lens. First, by calculating the influence of the aspheric coefficients of each optical surface on the wave aberration of the super-large field of view optical system, the several optical surfaces that are mostly affected by the changes in the aspheric coefficients are found. Then ,the aspheric coefficients of these surfaces as variables and the modulation transfer function of the optical system as the evaluation function are used, and the adaptive normalized real-coded genetic algorithm is applied to optimize the fisheye lens optical system. Based on the verification of examples, the method in this paper can effectively determine the position of one or more optimal aspheric surfaces, which has guiding significance for optimizing the fisheye lens system.