Application of laser technique for the calculating the speckle size and object incidence angle

The electronic speckle interferometry technique used to measure the deformations is based on the subtraction of interference patterns. An object image is first recorded before the deformation of the object, after it receives the reference wave. The difference between two images showing correlation fringes observable in real time directly on the CCD camera. The interpretation of these fringes to determine the disturbance. In this work, we present interferograms from the deformation of a metal plate, selection of optimal parameters for lateral and longitudinal dimensions of speckle grains and the incidence angle in the optical assembly Michelson