OPTICAL-ELECTRONIC AUTOCOLLIMATING SYSTEM FOR INVARIANT MEASUREMENT 
OF THE TWIST ANGLE

Konyakhin Igor A., Tatiana Kopylova

2011 , VOLUME 11, NUMBER 5 ( SEPTEMBER-OCTOBER )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Nikiforov
Vladimir O.
D.Sc., Prof.

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OPTICAL-ELECTRONIC AUTOCOLLIMATING SYSTEM FOR INVARIANT MEASUREMENT OF THE TWIST ANGLE

I. A. Konyakhin, T. Kopylova

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Abstract

An optical-electronic system with a tetrahedral reflector is considered. Two dihedral angles in this reflector have a slight deviation from 90°. The system is based on the symmetric beam path scheme towards the axis of twisting with an additional reflection. Such scheme allows making measurements of the twist angle invariant to rotation on collimation angles.

Keywords: autocollimator, invariant, twist angle, tetrahedral reflector, twistangle measurement sensitivity.

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