用凸透镜测狭缝宽度

Measurement of the slit width with thin lens

提出利用凸透镜成像原理测出狭缝宽度的一种新方法,实验采用两种光源对一狭缝凸透镜成放大像。利用像宽结合公式计算出实现狭缝的宽度,该方法与现行其它测量方法相比较,具有操作简便,测量狭缝宽度范围广,1mm以上的宽度都可以测量,准确度高,所用仪器简单等特点。

This paper based on the principle of lens imaging, using the magnification of lens imaging, draws the real width of the slit. The experiment by using two kinds of light source for a slit lens into like a magnifing image. And using image width combinative formular, it calculates real lens shit width. This measurement is more easy on theory than others. It may be used widely when the slit is over 1 millimeter.