In Chapter 2, the refractive index distribution and ray trajectory of GRIN balllens are studied in theory.
第二章主要从理论方面研究梯度折射率球透镜的折射率和光线轨迹。
2
GRIN balllens is a spherical optical element with refractive index is symmetric around a spherical point and varies in spherical radius direction.
梯度折射率球透镜是一种折射率以球心为对称中心，并沿球半径方向分布的球型光学元件。
3
At last, the author obtained the equation of ray trace in the GRIN balllens with the index profile which is quadratic and drew some important conclusions.