FIELD: machine building.
SUBSTANCE: device is an optical interferometer made according to the ring circuit and comprises a laser, an optical system, beam splitters, mirrors, photodetectors and a rotating optical disk made in the form of a wedge operating as a transmission-mode photocathode. The flat surfaces of the disk are fitted with reflecting coatings made as ring sections; the outer radius of the reflecting rings is less than the outer radius of the disk by the value of light beam diameter in order to provide for the lead-in and lead-out of the beam from the disk. The photodetector is made as a set of photocells located in the plane of the interference fringe pattern localisation along the straight line parallel to the interference fringe.
EFFECT: invention provides for the interference immunity of a device.
2 dwg
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