Improvement of Metrological Characteristics of Laser Image Generators with Circular Scanning
A. V. Kiryanov, V. P. Kiryanov
Keywords: laser image generators, raster scanning, differential interferometer, aerostatic spindle, instability factor
Pages: 77-93
Abstract
Possible ways of improving laser image generators based on the circular scanning principle are analyzed. The most important sources of errors induced by the system of radial displacements and by the rotation unit are studied. Principles of decreasing the main components of instability of operation of image generators with circular scanning are described. Owing to the use of some principles, the prototype of such a generator can be put onto the second place in the worldwide rating of systems used by various companies to form structures providing high-accuracy measurements of angles (scales, limbs, rasters, etc.).
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