摘要
近年来人们对变折射率分布中的球对称分布的研究日渐重视。本文进一步深入分析了球对称折射率分布,证明球对称分布中光线的倾斜度核心值即为其积分不变量;一个令人惊异的结果是,麦克斯韦透镜中任意共轭点之间的光程都相等,并可用分布参数表为π/2n_0a。
Recently the spherical gradients are more attracting the people in gradient index optics field. The paper makes a more deep and thorough analysis for spherical grad ients and Maxwell lens and shows that the skewness of the ray in a spherical gradient is unchangeable and its principle value is the integral invariant of the ray, and the optical path length between the conjugate points in a Maxwell lens is constant and the value is independent of the ray and can be expressed with the distribution parameters as πn0α/2.
关键词
变折射率光学
球对称分布
光程
Gradient index optics
Spherical gradients
Optical path length.
