A new method for studying the influence of pentaprism micromotion on steering angle

A new method to study the influence of pentaprism micro motion on the steering angle of the outgoing ray has been proposed in this paper. Comparing with the traditional research methods, the new method ensures the absolute accuracy of the calculation results, and at the same time it greatly reduces the calculation amount and complexity. Both the derivation process and the calculation formulas are extremely simple. The calculation results of the new method are analyzed by MATLAB. The influence rule of pentaprism micro motion is summarized. The calculation formulas of the angle error of light is given. And relevant experiments are designed to carry out a large number of tests on the pentaprism. The results show that: The formulas that obtained by this method which show the steering angle of outgoing ray and the error of that ray are in agreement with the experimental results within a reasonable range. So the results further verify the correctness of the new method and the applications to the relevant engineering.