Scanning dot matrix projection system and electronic equipment

The embodiment of the invention discloses a scanning lattice projection system. The scanning lattice projection system comprises a light source, a steering mirror and a light-permeable diffusion assembly, wherein the light source emits collimated light, the steering mirror is arranged in the emergent direction of the collimated light, the collimated light entering the steering mirror is reflected to obtain reflected light, the steering mirror is arranged to be capable of deflecting so as to change the first emergent angle of the reflected light obtained through the steering mirror within a preset angle range, the diffusion assembly is arranged in the emergent direction of the reflected light, when the reflected light enters the diffusion assembly, the diffusion assembly can diffuse the reflected light so as to make the emergent angle of the reflected light emitted from the diffusion assembly be larger than the incident angle of the reflected light entering the diffusion assembly, and the light emitted from th