ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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6
Issue
vol 60 / JUNE, 2017
Article
UDC 531.7.082.5:535.42/44

DIFFRACTION METHOD FOR MEASUREMENT OF ANGULAR AND SPATIAL DISPLACEMENTS

V. N. Nazarov
ITMO University; Associate professor


Y. A. Sokolov
ITMO University; Student


Abstract. A diffraction method of angular and spatial displacements of controllable object is proposed. The method is based on application of amplitude-phase distribution of frequency spectrum of the object. Mathematical formula for irradiance distribution in the image plane is derived. Results of calculations and experiments demonstrate high sensitivity of the method to angular and spatial displacement of controllable object.
Keywords: diffraction, interference, measurement