AUTOCOLLIMATOR Russian patent published in 2022 - IPC G02B27/30 G01M11/02 

FIELD: optical equipment.

SUBSTANCE: invention can be used to measure the angles of rotation of objects relative to two mutually perpendicular axes. The autocollimator includes an optical system for generating an autocollimation image of a stamp on a photodetector from a radiation source, a capacitor, a mark, a beam splitter, a lens, an autocollimation mirror and a photodetector with a signal processing unit. The mark and the photodetector are installed in the focal planes of the lens. A semi-transparent plane-parallel plate is additionally installed between the lens and the autocollimator mirror, located to the sighting axis of the autocollimator at an angle ϕ selected from the condition: ϕ<b/kf, where b is the characteristic size of the photodetector, mm; f is the focal length of the lens, mm; k≥4. The signal processing unit is made calculating the position of the autocollimator mirror based by signals generated by several mark images.

EFFECT: increase in measurement accuracy, a reduction in dimensions and an increase in functionality.

1 cl, 3 dwg