Scan Head is simply used in the laser industry, a scanning vibration mirror, its professional term is called high-speed scanning vibration mirror GALVO scanning system.
The so-called vibration mirror, also can be called ammeter meter, its design ideas completely follow the design method of ammeter, lenses replaced the hands, and the probe signal by computer-controlled -5v-5v or -10v-+10v DC signal replacement to complete the scheduled action. The same as the rotating-mirror scanning system, this typical control system uses a pair of return mirrors, the difference is that the stepper motor driving this set of lenses replaced by servo motor, in this control system, the use of position sensors and the design of negative feedback loop to further ensure the accuracy of the system, The whole system has reached a new level of scanning speed and repeated positioning accuracy.
