Treatment device for area and line fractional laser treatment

A treatment device for fractional laser-based skin treatment, the treatment device comprising:

• an emission window;
• a treatment generator that comprises (i) a treatment laser for emitting laser light and (ii) a laser scanning system, wherein the laser scanning system comprises at least one movable deflection element configured and arranged for scanning laser light across the emission window towards skin tissue from a plurality of locations in the emission window by moving the at least one deflection element relative to the emission window, whereby, in use, laser-based lesions are generated inside the skin tissue;
• and
• a controller configured for generating a predefined disposition of the lesions in the skin tissue by emitting laser light via selected ones of the locations of the plurality of locations while the treatment device, in use, is moved relative to the skin surface,
• wherein the controller is configured for operating alternatively (i) in an area treatment mode and (ii) in a line treatment mode, different from the area treatment mode, and
• wherein, in the area treatment mode, the controller is configured for generating an area disposition of the lesions inside the skin tissue by moving the at least one deflection element relative to the emission window while the treatment device, in use, is moved relative to the skin surface, and
• wherein, in the line treatment mode, the controller is configured to generate a line disposition of the lesions inside the skin tissue by maintaining the at least one movable deflection element of the laser scanning system in a stationary position relative to the emission window, via preventing a movement of the at least one movable deflection element, such that the laser light is emitted from the emission window from only a single predefined fixed location of the plurality of locations during the line treatment mode, while the treatment device, in use, is moved relative to the skin surface.