Projection lamp for projecting a nebula and a starry sky

A projection lamp for projecting a nebula and a starry sky, comprising:

• a housing,
• a light source assembly,
• a laser assembly,
• a rotating assembly,
• a control board,
• a base seat, and
• a power source port, wherein:
• the light source assembly and the laser assembly are disposed in the housing and penetrate through the housing,
• the rotating assembly and the control board are disposed in the housing,
• the rotating assembly is configured to drive a rotating optical sheet of the light source assembly and a diffraction sheet to rotate,
• the base seat is fixedly disposed in the housing,
• the power source port is disposed on the control board and penetrates through the housing,
• the light source assembly comprises a light source board, a light reflecting cup, a fixed optical sheet, the rotating optical sheet, and a lens assembly,
• the light source board is fixedly disposed in the housing,
• the light source board, the light reflecting cup, the fixed optical sheet, the rotating optical sheet, and the lens assembly are successively disposed along a path in which light rays emitted by the light source board move,
• the fixed optical sheet is fixedly disposed on the base seat,
• the rotating optical sheet is rotatably connected to the rotating assembly,
• the lens assembly is fixedly disposed on the housing,
• the light reflecting cup is configured to reduce a lighting angle of the light rays emitted by the light source board so as to enable the light rays emitted by the light source board to be projected onto the fixed optical sheet,
• the fixed optical sheet and the rotating optical sheet are configured to successively scatter the light rays emitted by the light source board so as to enable the light rays scattered by the rotating optical sheet to be projected onto a projection plane to form a projection of the nebula through the lens assembly, and
• the rotating assembly is configured to drive the rotating optical sheet to rotate so as to make the projection of the nebula flow.