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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