The Laser ESPI(Electronic Speckle Pattern Interferometry) System, which is also called TV Holography or Digital Holography, measures three dimensional and high sensitive displacements and strains very precisely. This non-contact measuring technology can be used for full field measurement without any mark on the measured objects. The portable and compact sensor head can be used for testing any material and is flexibly mounted on a robust test arrangement allows an efficient measurement.

The ESPI is well suited for a variety of R&D works including complex components and electrical structures, automobile design, mechanical refinement and material research. It is an ideal experimental verification technology that can effectively verify between the analytical technologies and the numerical calculation technologies.

Features of ESPI

• Non-contact measurement can be applied to real objects on-site.
• High sensitivity, wide measuring range, simple equipment, and low demand for vibration prevention.
• Displacement and direction information of each visible point and full field information of the tested objects can be obtained.
• White Light Speckle can be used for real objects with curve surface and large surface and also for vibration measurement.