The laser beam of the scanning laser doppler vibrometer is deflected by 2 mirrors which are controlled by the computer. A camera inside the head delivers the picture of the object under test.
On this picture the measurement points can be arranged like with a CAD software. After the setup of points the measurement is done automaticly by the computer.
The scanning laser vibrometer is based on the single point laser vibrometer VibroMet500. The laser beam measures the velocity on the surface of the test object. The velocity signal is measured by a data aquisition system and stored in the computer.
In the picture above the components of a laser scanning system are displayed.
The complete system is very compact and can be carried by on person for example when using a plane.