Holographic interferometry for the annular surface flatness CONTROL

摘要

The utility model relates to an optical instrument engineering and can be used for technological purposes to control the surface flatness of polished graphite and metal parts with various types of coatings: chromium-molybdenum, and other nitrided. The object of the proposed utility model is an expansion of technological capabilities in controlling a holographic interferometer annular surfaces made of metal and graphite materials, as well as surfaces having various types of coatings used in the creation of annular seals for various purposes. The technical result is achieved in that a holographic interferometer for controlling flatness of annular surfaces having optically coupled laser, a collimator, a beam splitter for separating the laser beam into an object beam and a first reference beam, the mirror of the first reference beam projection lens, the area and the hologram recording assembly in accordance with the proposed utility model, introduced optically interconnected system mirrors the second reference beam shielding shutter having a hole in the center and posted schennaya to output from the object beam, and the opaque shutter placed in the first reference beam, the system of the second reference beam mirror mounted between the working area and node hologram registration, the shielding curtain is installed between the projection lens and a work area, and the opaque shutter is set perpendicular to the optical axis between the beam splitter and the mirror of the first reference beam to output it from the first reference beam in the hologram recording, the diameter of the second reference mirrors beam equal to the diameter hole shielding shutter, a projection lens mounted to imaging controlled items in the reverse scattered on the surface of the light rays size equal to the diameter of the second reference beam and a diameter equal to the diameter opaque shutter mirror of the first reference beam. 3 yl.