The present disclosure discloses a 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. The light source assembly and the laser assembly are disposed in the housing and penetrate through the housing, and the rotating assembly and the control board are disposed in the housing. The rotating assembly is configured to drive a rotating optical sheet and a diffraction sheet to rotate. The light source assembly comprises a light source board, a light reflecting cup, the rotating optical sheet, and a lens assembly having a frosted surface with an array of protrusions. The light source board, the light reflecting cup, 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.

A projection device for projecting images on a surface of the device includes an outer housing having a front translucent screen, a projection module frame mounted on an inner surface of the outer housing, and a projection roller frame supported by the projection module frame. The projection roller frame includes first and second spaced apart rollers rotatable respectively on two opposite cylindrical ends integrally formed on a lampshade. A cylindrical projection film is held between the first and second rollers. A light source is mounted inside the lampshade so that an image formed on the projection film can be projected on the front translucent screen by the light source. The device further includes a gear mechanism for driving the rollers, a position-limiting mechanism, and a speaker.

A projection toy includes a top housing. A bottom housing is fixedly mounted at a top end of the top housing. A projection mechanism is fixedly mounted between the top housing and the bottom housing. A light-emitting diode (LED) lamp panel is fixedly mounted on one side of the projection mechanism between the top housing and the bottom housing. An end, away from the LED lamp panel, of the projection mechanism is clamped in a limiting enclosure. The limiting enclosure is fixedly mounted at one end of a first cover. A second cover is fixedly connected to the first cover. A decorative cover is fixedly mounted on the second cover. The first cover is fixedly mounted at one end of the top housing and one end of the bottom housing on a side away from the decorative cover.

A projection toy includes a top housing. A bottom housing is fixedly mounted at a top end of the top housing. A projection mechanism is fixedly mounted between the top housing and the bottom housing. A light-emitting diode (LED) lamp panel is fixedly mounted on one side of the projection mechanism between the top housing and the bottom housing. An end, away from the LED lamp panel, of the projection mechanism is clamped in a limiting enclosure. The limiting enclosure is fixedly mounted at one end of a first cover. A second cover is fixedly connected to the first cover. A decorative cover is fixedly mounted on the second cover. The first cover is fixedly mounted at one end of the top housing and one end of the bottom housing on a side away from the decorative cover.

A projection lamp includes a light source, a spotlight assembly, a film projection assembly, a lens, and a motor. The spotlight assembly is disposed in a light emitting direction of the light source, and the spotlight assembly includes condensing lenses directly facing the light source. The film projection assembly is disposed on one side, distal from the light source, of the spotlight assembly. The lens is disposed on one side, distal from the light source, of the film projection assembly. The lens includes a plurality of lens structures, and each of the plurality of lens structures includes a first surface facing the film projection assembly. The first surface is an arc surface protruding towards the film projection assembly. An output shaft of the motor is penetrated through the spotlight assembly and the film projection assembly. The output shaft of the motor is fixedly connected to the lens.

A projection light assembly is provided which achieves a multi-theme animation effect. The projection light assembly includes a gear holder, a first gear and a second gear operably linked by the gear holder, a motor coupled to one or both of the first gear and second gear, a grating unit holder movably connected to one or both of the first gear and second gear, and a grating unit mounted to the grating unit holder. The grating unit is driven by the motor and moved by the first gear and second gear such that the grating unit moves circumferentially in a fixed radius. At least one laser light source is positioned such that light generated by the laser light source and transmitted in a light path projects through the grating unit. A transmission belt may be coupled to the first gear and the second gear, and the grating unit is driven by the motor and moved by the transmission belt. A projection light assembly may include a slider board a motor coupled to the slider board, an eccentric wheel coupled to the motor, a laser slider disposed in the slider board, and a grating unit disposed in the laser slider, wherein the grating unit is driven by the motor and moved by the eccentric wheel.

A projection light assembly is provided which achieves a multi-theme animation effect. The assembly includes a main mount board, at least one laser light source coupled to the main mount board, a grating group platform rotatably coupled to the main mount board, at least one grating group mounted to the grating group platform, a motor coupled to the main mount board and/or the grating group platform, and a motherboard in communication with the laser light source, the grating group, and the motor. Light generated by the laser light source is transmitted in a light path and projects through the grating group, and the motor drives the grating group to rotate through the light path. Methods of manufacturing a projection light assembly are also provided. Methods of projecting multi-theme animation include providing at least one grating group containing multiple frames, generating light from a laser light source such that the light is transmitted in a light path projecting through the at least one grating group, and driving the grating group to rotate such that the frames sequentially enter and exit the light path.

A laser projection device has at least one laser light source and a plurality of gratings, each grating having a light receiving side and a light emitting side. The plurality of gratings are arranged in a ring-shape having at least one row with the light receiving side of each grating facing a center of the ring. The laser projection device also has a motor configured to rotate the plurality of gratings about a rotational axis passing through the center of the ring. The plurality of gratings each comprise a pattern for forming an image when light is passed through the pattern. The plurality of gratings are arranged around the ring such that the plurality of patterns are configured to project an animated image when the plurality of gratings sequentially receive light from the at least one laser light source upon rotation of the grating set.

A laser projection device has at least one laser light source and a plurality of gratings, each grating having a light receiving side and a light emitting side. The plurality of gratings are arranged in a ring-shape having at least one row with the light receiving side of each grating facing a center of the ring. The laser projection device also has a motor configured to rotate the plurality of gratings about a rotational axis passing through the center of the ring. The plurality of gratings each comprise a pattern for forming an image when light is passed through the pattern. The plurality of gratings are arranged around the ring such that the plurality of patterns are configured to project an animated image when the plurality of gratings sequentially receive light from the at least one laser light source upon rotation of the grating set.

A rotatable stroboscopic animation device with a rotatable base portion and at least one light source. An angular-velocity-dependent flashing system flashes the at least one light source according to a predetermined flash mode dependent on the angular velocity of the base portion to produce coherent, automatic stroboscopic animation of images retained by the base portion. The flashing system can comprise an angular velocity determination system in cooperation with an illumination system. Angular velocity can be determined by an orienting system, such as a compass, in combination with a sampling system, a gyroscope, or a rotational sensor. A flash mode selection mechanism, which can be manual or automatic, permits a selection of a flash mode from among a plurality of flash modes. A manual flash mode selection mechanism can be formed by relatively pivotable upper and lower disks of the base portion. Animation disks can have indications of predetermined flash modes.