Collimation device (1) is shown of the type intended to direct an energy beam (13) in a given direction and at a given solid angle, the collimation device (1) being capable of being installed on output of an energy beam generating means and of being connected to a control unit (20). The collimation device (1) includes means for testing operation of the assembly formed by the energy beam generating means, the collimation device (1) and the control unit (20).