Measurement of the angle of deviation of a penta prism
Measurement of the angle of deviation of a penta prism
复制标题
五棱镜偏角的测量
DOI：
10.1088/0150-536x/26/3/005
复制
发表时间：
1995
影响因子：
2.1
通讯作者：
R. Ram
中科院分区：
文献类型：
--
作者：
O. Prakash;R. Ram
五棱镜的偏离角是入射光线和出射光线方向之间的角度，对于完美棱镜来说，它正好是90度。制作一个完美的五棱镜是一项困难的任务，因此人们必须容忍一个偏离角度略小于或大于90度的棱镜。任何偏离90度的角度都被认为是五棱镜的误差。本文介绍了一种用分光计和两个自准直仪测量五棱镜偏角的简单方法。该方法的准确度取决于分光计/自准直仪刻度的准确度。
The angle of deviation of a penta prism is the angle between the direction of incident and emergent rays and for a perfect prism it is exactly 90 degrees. It is a difficult task to make a perfect penta prism, consequently one has to tolerate a prism with an angle of deviation a little less or more than 90 degree. Any departure from 90 degree is regarded as an error in the penta prism. In the present article, a simple method has been described to measure the angle of deviation of a penta prism by using a spectrometer and two auto-collimators. The accuracy of the method depends upon that of spectrometer/auto-collimator scales.