Optical element difrativo axisimu00e9trico, interferu00c8metro comprising the same, and method of measuring the radial component fields of displacements in superfu00eccies

摘要

Optical element difrativo axisimu00e9trico, interferu00c8metro comprising the same, and method of measuring the radial component fields of displacements in superfu00eccies.This invention is a new type of optical interferometer using laser, lenses, mirrors, camera and an optical element difrativo special to apply the electronic speckle interferometry of (spirit) in measurement of the radial component and in the plan of fields of displacements that act in superfu00edc Heis not polished from a single illumination condition.As built, the interferometer is insensitive to variations in the wavelength of light used, thus permitting the use of low-cost lasers and not stabilised in precision measurement.