Practical work benches

These measurement benches were developed to provide information about optical measurement techniques. The equipment is supplied as a kit so that it can be taken down by students to better understand speckle interferometry techniques. The equipment is supplied on a tumkey basis with training on the F.A. - FringeAnalysis® software.

This bench allows interferometry of two speckle waves to be dealt with. The setup has 4 lighting arms which can interfere with one another. Considered 2 by 2, the beams allow the 2D field of displacement of surface to be measured with interferometric accuracy. A "mechanical" module is used for calculating the deformation field and the stresses from this displacement field.

This bench is a simplified setup of the TV-Holography principle. It is a way of dealing with the main adjustments of this type of equipment : intensity, calibration of phase offset.
The system can also be used for monitoring micrometric movements measured along the axis of the camera and due to mechanical or thermal loading. It also displays vibration modes using the "averaged time" technique.