Modeling a broad-band single-coordinate autocollimator with an extended mark and a detector in the form of a linear-array camera

This paper presents the results of modeling the parameters of a compact autocollimator with a single-coordinate detector in the form of a linear-array camera. The modeling was carried out by successively tracing the rays through the elements of the autocollimator’s optical system between the conjugate planes of the mark and the detector with intermediate reflection from a flat mirror. The described original shape of the mark and algorithm for processing the measured signals to be modeled make it possible to implement a broad-band operating regime in the device with high-accuracy angle measurements in the center of the range.