УДК: 531.748

High-accuracy device for measuring the twist angle

Zhukov, Y.P., Lovchiy, I.L., Petrov, L.P., Pestov, Y.I., Chudakov, Y.I., Shevtsov, I.V.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Жуков Ю.П., Ловчий И.Л., Петров Л.П., Пестов Ю.И., Чудаков Ю.И., Шевцов И.В. Высокоточное устройство для измерения угла скручивания // Оптический журнал. 2014. Т. 81. № 9. С. 69–72.

Zhukov Yu.P., Lovchiy I.L., Petrov L.P., Pestov Yu.I., Chudakov Yu.I., Shevtsov I.V. High-accuracy device for measuring the twist angle [in Russian] // Opticheskii Zhurnal. 2014. V. 81. № 9. P. 69–72.

For citation (Journal of Optical Technology):

Yu. P. Zhukov, I. L. Lovchiĭ, Yu. I. Pestov, Yu. I. Chudakov, I. V. Shevtsov, and L. P. Petrov, "High-accuracy device for measuring the twist angle," Journal of Optical Technology. 81(9), 537-539 (2014). https://doi.org/10.1364/JOT.81.000537

Abstract:

This paper describes a high-accuracy optoelectronic device for measuring the twist angle, based on an autocollimation method and using a reflector in the form of a unit of right-angle prisms. The device makes it possible to measure the relative twist angle of objects in the range ±2.5° when there is a distance of 2.5–3.5 m between the reflector and the optoelectronic unit of the device. The rms deviation of the measured angle from the true value in this case does not exceed 2′′ in the range ±2.5°, and it does not exceed 1′′ in the range ±10′. A specially shaped mark is used in the device that makes it possible to measure the auxiliary angle between the direction of the edge of the prism reflector and a plane perpendicular to the optical axis of the device. The installation can be used to transfer the azimuthal direction vector.

Keywords:

twist angle, right-angle two-faced reflector, autocollimator, azimuthal direction

OCIS codes: 120.4820

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