Abstract

We report on a non-contact method for external right-angle measurement using two autocollimators. A precise mathematical model is deduced to evaluate and deduct the measuring error. The values measured with our method are very coincident compared with the results measured by a ZYGO interferometer. The measuring accuracy is superior to 0.1 arcsec for the right-angle errors within 3.0 arcsec and becomes 0.4 arcsec for the extended right-angle errors within 8.0 arcsec. This method can be widely used in situations for external right-angle measurement, such as angle measurement for the body of torsion balance and test mass in spaceborne laser interferometry.

© 2019 Optical Society of America

External measurement of dihedral right angles with cyclic optical configuration

Sanjib Chatterjee and Y. Pavan Kumar
Appl. Opt. 48(8) 1598-1605 (2009)

Precision roll angle measurement system based on autocollimation

Wenran Ren, Jiwen Cui, and Jiubin Tan
Appl. Opt. 61(13) 3811-3818 (2022)

Calibration method of the right-angle error of a hollow corner-cube retroreflector based on an independent autocollimator

Renpu Li, Yujia Huo, Juan Yan, Dandan Wen, Igor Konyakhin, Dinhduan Dang, Xingye Zhou, Guifu Huang, and Yong Ma
Appl. Opt. 63(3) 668-675 (2024)

An Autocollimation Measurement of the Right Angle Error with the Help of Polarized Light

Florian Ratajczyk and Zygmunt Bodnar
Appl. Opt. 5(5) 755-758 (1966)

Angle measurement based on the internal-reflection effect and the use of right-angle prisms

P. S. Huang and J. Ni
Appl. Opt. 34(22) 4976-4981 (1995)