摘要
传统的自准直法由于人眼的局限性,难以准确判断清晰像位置,测量精度不高。采用目镜组做像屏,用与分划板共面的十字架图案做物屏,采取消视差的方法判断像的位置,改进了传统的自准直法测量透镜焦距的实验方法,实验装置简单,结果准确,无需光源。
Since the experiment effort was large in focal length measurement of thin lens by traditional auto-collimation method because of the clear image can not be found exactly. By use of eyepiece with cross reticule to observe image, using a plate with a cross pattern as object screen, and using the method of eliminate optical parallactic error to estimate accurately the image, the traditional auto-collimation method to measure focal length of thin lens was improved in the thesis. Experiments showed that the experiment device was simple, and the result was correct.
出处
《中国现代教育装备》
2012年第19期9-10,共2页
China Modern Educational Equipment
基金
集美大学教育教学改革项目(编号:JY09221)
关键词
透镜焦距
自准直法
目镜组
分划板
focal length
auto-collimation method
eyepiece
cross reticule
