关于载物台的定心方法一般都是采用二分之一逼近法,这种方法不容易掌握,调节起来费时间又麻烦。所谓载物台定心或称调节载物中心,其实质就是调定载物台的转动中心与物镜的光轴相重合。根据几何光学原理可知,凡是位于物镜光轴上的物相,其影像就一定位于视场的中心,如图1所示的 O′点。因此,经过定心的载物台,试样上所要分析的物相影像如果原来就位于视场中心,那么无论载物台转至任何角度,该物相影像都不会偏离视场中心。众所周知,全相显微镜的光路是经过严格计算、反复调整、充分 About the centering of the stage are generally used by one-half approximation method, this method is not easy to grasp, adjust the time and trouble. The so-called stage centering or adjusting load center, its essence is to set the rotation stage of the stage and the optical axis of the objective coincide. According to the principle of geometrical optics, all the phases located on the optical axis of the objective lens must be located at the center of the field of view, as shown in Figure 1 at O ​​’point. Therefore, after the stage is centered, if the object phase image to be analyzed on the sample is originally in the center of the field of view, the object phase image will not deviate from the center of the field of view regardless of the angle of the stage. As we all know, the optical path of the phase microscope after rigorous calculations, repeated adjustments, full