本文根据光线轨迹方程，讨论一种等折射率面为指数型变化的梯度折射率纤维透镜的成象特性。
The imaging characteristics of a GRIN fiber lens with exponential variation of the constant-index surfaces are discussed based on the ray paths equations.
本文推导了一个锥透镜的光线方程。
本文采用积分方程法计算带极靴的任意形状的磁透镜。
In this paper, an integral equation method is developed for calculating the magnetic field produced by the iron-shielded lens of arbitrary shape.
研究了二次抛物线型的GRIN球透镜的光线轨迹方程序；得出其轨迹为椭圆曲线及一些重要结论。
At last, the author obtained the equation of ray trace in the GRIN ball lens with the index profile which is quadratic and drew some important conclusions.
本文根据近轴子午光线方程，研究了自聚焦透镜光纤加速度计的工作原理；
Based on paraxial meridian-ray equation, the principle of fibre accelerometer using self-focussing lens is studied;
从光线微分方程求得纤维中光线轨迹的解析解，并给出纤维透镜的高斯参数及物像计算公式。
The analytical solutions for ray paths in the fiber are obtained from the ray differential equation and the Gaussian parameters and the imaging formulas of the lens are also given.
采用五点差分法计算轴对称静电透镜子午面上电位分布，再从普遍轨迹方程求得的电子轨迹出发得到透镜焦点和球差。
The five points difference method is used to calculate the voltage distribution on the meridian surface of axial-symmetrical electrostatic lens.
通过对混合复消色差透镜组的像差分析导出了其结构参数的求解方程。
The equations for solving the configuration parameters of hybrid apochromats are derived by Seidel aberration analysis.
通过对混合复消色差透镜组的像差分析导出了其结构参数的求解方程。
The equations for solving the configuration parameters of hybrid apochromats are derived by Seidel aberration analysis.
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