Pockels cell

例句：

1. 1. The Pockels cell is used to adjust the light intensity in photography.
   聚光镜用于摄影中调整光线强度。
2. 2.In the microscope, the Pockels cell is responsible for focusing the image on the slide.
   显微镜中，聚光镜负责将图像聚焦在幻灯片上。
3. 3.The Pockels cell is an essential component of a telescope's optical system.
   聚光镜是望远镜光学系统不可或缺的组成部分。