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Optical Engineering

Noncontact measurement of angular position and angular movement by means of laser goniometer
Author(s): Yuri V. Filatov; Maxim S. Nikolaev; Petr A. Pavlov; Vladimir Yu Venediktov
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Paper Abstract

The results of analysis and experimental investigation of a laser goniometer (LG), working in the mode of the noncontact measurement of an object’s angular position, are presented. The important feature of this approach is the very wide range of high-accuracy measurements. In this case, the LG, characterized by the accuracy of ∼0.1 arc sec, has big advantages in comparison to photoelectrical autocollimators which have a rather narrow range of measured angular positions. Our results indicate that the use of a laser dynamic goniometer makes it possible to measure constant angles with an accuracy of 0.05 to 0.1 arc sec in the range of possible angles of 15 to 20 deg. If the measured angle is varying, the residual measurement error contains an additional component, which is equal to ∼0.2 arc sec, induced by the nonflatness of the optical polygon’s faces and by the problems with statistical averaging of the measurement results.

Paper Details

Date Published: 18 May 2015
PDF: 5 pages
Opt. Eng. 54(5) 054103 doi: 10.1117/1.OE.54.5.054103
Published in: Optical Engineering Volume 54, Issue 5
Show Author Affiliations
Yuri V. Filatov, Saint Petersburg Electrotechnical Univ. "LETI" (Russia)
Maxim S. Nikolaev, Saint Petersburg Electrotechnical Univ. "LETI" (Russia)
Petr A. Pavlov, Saint Petersburg Electrotechnical Univ. "LETI" (Russia)
Vladimir Yu Venediktov, Saint Petersburg Electrotechnical Univ. "LETI" (Russia)

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