A scan head positions the beam, but the processing field and final spot depend on the associated optics and configuration. Start with the wavelength, incident beam, required field, processing plane and application duty cycle.
Confirm the scanner, objective, mirrors, coatings, control board, software and any focus-axis option as a matched system. Identify whether air or water cooling is needed in the selected configuration. Synchronisation and processing-on-the-fly requirements should be part of the control specification.
Agree the tuning and test conditions with the supplier. Keep scan-head performance terms distinct from finished-part tolerances. A manufacturer’s application list identifies possible uses; a representative trial establishes whether the assembled system meets your particular requirement.