FIELD: measuring technique.
SUBSTANCE: device comprises, connected in series, laser, light-splitting prism that deflects the beam at the right angle, reflecting plate for converting the beam into parallel beams that pass through the light-splitting prism, two-dimensional photodetector mounted perpendicular to the direction of propagation of the parallel beams and provided with two small-diameter openings for passing the light beams, and reflector mounted on the object.
EFFECT: simplified design.
2 dwg
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