ANGULAR-MOTION TRANSDUCER Russian patent published in 2018 - IPC G01B11/26 

FIELD: measuring equipment.

SUBSTANCE: angular-motion transducer, made in the form of a photoelectric autocollimator, comprises a lens, in the focal plane of which an array radiation receiver is mounted, connected to the electronic unit with its output, a beam splitter located in front of the array radiation receiver, an illuminator with a light source designed to illuminate the signal mask with a transparent stroke mounted in front of the beam splitter in the focal plane of the lens, and a double mirror, representing a controlled object - BR-180° prism facing the lens with the transparent front face. The front face of the prism is covered with a mirror coating made in the form of a symmetrically located circle. The illuminator is provided with an additional light source, a beam splitter and aperture diaphragms optically conjugated to the front face of the prism by means of a condenser. The first diaphragm is made in the form of a circular transparent hole, and the second one is made in the form of a transparent ring. Image diameter of the first aperture diaphragm is less than the diameter of the mirror coating circle and the inner image diameter of the transparent ring of the second diaphragm is more than the circle diameter of the mirror coating.

EFFECT: increasing accuracy of the sensor angular measurements while ensuring its small weight and dimensions.

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