ANGLE MEASUREMENT DEVICE Russian patent published in 2015 - IPC G01B11/26 

FIELD: instrumentation.

SUBSTANCE: angle measuring device contains lens, matrix radiation receiver with calculating unit, and geometrical reference channel (GRC) containing lighting unit optically connected with the lens, having thee lighting sources with spacing 120°, collimator unit containing three input and three output pinhole apertures, and mirror-prism block creating with the applied on it collimator diaphragms the monoblock rigidly connected with the supporting surface of the angle measuring device and made in form of a isosceles hexagon truncated pyramid, which adjacent ribs are located at angle 120° to each other, and one of bases looks on the lens; in it input and output pinhole apertures are located on the side surfaces of the mirror-prism block, additionally provided with three angle-bar reflectors installed after the appropriate output pinhole aperture ensuring radiation input to the input lens aperture by means of reflection from the looking on it smaller base of the mirror-prism block, at that specified pinhole apertures are arranged such that axis of the output beam is directed at right angle to the side surface of the mirror-prism block.

EFFECT: increased accuracy of the device at simultaneous simplification of the lens optical system and decreasing of its weight and size.

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