Galilean beam expander with sphericallens is widely used in laser systems, but it has a lot of deficiency.
在激光系统中，伽里略球面透镜扩束器已得到广泛地应用，但是，它有许多不足之处。
2
In this article, a systematic analysis is made about sphericallens principle of return reflecting fabric with the help of geometrical and analytic method.
本文对回归反光织物中回归反光物体玻璃微珠的球透镜原理采用几何和解析两种方法进行了系统分析。
3
At least one aspherical lens is arranged between the sphericallens and the printing form, for focusing or converging the laser light onto a desired spot.