Dot matrix is a mode of laser emission. The MED-870+ lattice laser instrument is equipped with a special image generator (CPG). The image generator changes the emission mode of light. The lattice laser can be emitted through a high focusing mirror. 50μm-80μm focal spot, and scan these focal spots into up to 6 kinds of rectangular patterns (circle, square, rectangle, diamond, triangle, line), which are suitable for the treatment of different parts and different skin types.