In this paper, a new method for measuring the working angle deviation of the polyhedron is presented. With this method, two polyhedrons can be measured at the same time with only one autocollimator by comparing and measuring the corresponding surfaces of the two polyhedrons mutually, and the measuring results of the two polyhedrons have the same measurement accuracy. This paper introduces the measuring principle, derives the formula for calculating the working angle deviation, provides the standard deviation of the measuring results and gives a measurement instance. With the advantages of using only one autocollimator and having the high measuring accuracy, this method is suitable not only for measuring the polyhedron but also for measuring the laser scanning mirror.

Date Published: 31 December 2008
PDF: 6 pages
Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71303C (31 December 2008); doi: 10.1117/12.819679

Published in SPIE Proceedings Vol. 7130:
Fourth International Symposium on Precision Mechanical Measurements
Yetai Fei; Kuang-Chao Fan; Rongsheng Lu, Editor(s)