Transmission, without diffusion, in accordance with the laws of geometrical optics.

没有漫射的传输，服从几何光学的规律。

Transmission , without diffusion , in accordance with the laws of geometrical optics.

没有漫射的传输, 服从几何光学的规律.

Reflection, without diffusion, in accordance with the laws of geometrical optics ; as in a mirror.

没有漫射的反射，服从几何光学的规律；就像镜面造成的反射。

Reflection , without diffusion , in accordance with the laws of geometrical optics; as in a mirror.

没有漫射的反射, 服从几何光学的规律; 就像镜面造成的反射.

The amount of the drift in X direction, Y direction and in spatial angle can be obtained through geometrical optics.

另外，利用几何光学方法得到了激光光束在X方向、Y方向以及空间立体角上的漂移大小。分析了引起光束漂移的原因。

If we consider light from the point of view of geometrical optics, we would expect sharp , well-defined shadows to appear behind the edge of an opaque obstacle.

从几何光学的观点出发，我们预期在不透明障碍物边缘的后面将得到明显清晰的阴影。

When we choose the proper parametric variable, ray equation can be descended to one-order differential equation which is used to solve some problems of geometrical optics in nonuniform medium.

我们选用适当的参变数将光线方程降阶为光线矢量的一阶方程，用以解决若干非均匀媒质的几何光线问题。