The application discloses a water
ripple lamp and a
dynamic pattern light projection generation
system, which can generate a circulating flowing water
ripple effect, and comprises a base, a driving motor, a rotating piece, a
light source plate, a cover and a
ripple piece. The base is provided with a mounting cavity, the cover is mounted on the base and seals the mounting cavity, the driving motor is mounted on the base, the
light source plate is mounted on the base and arranged in the mounting cavity, at least two groups of light emitters are arranged on the
light source plate, the rotating piece is arranged in the mounting cavity and mounted on the output end of the driving motor, the rotating piece is arranged below the light source plate, the driving motor drives the rotating piece to rotate, the rotating piece and the ripple piece are transparent or translucent structures, at least part of the structure of the rotating piece is aligned with the two groups of light emitters, the ripple piece is fixedly mounted on the cover, the ripple piece is provided with a plurality of water ripple structures arranged in an array, the two groups of light emitters are arranged at intervals, the connecting line direction of the two groups of light emitters is a first direction, the extension direction of the water ripple structure is a second direction, and the first direction and the second direction are arranged in an intersecting mode.