Abstract: A projection apparatus includes a light source assembly, a display control circuit, a light valve, a vibrating lens drive assembly, and a vibrating lens. The display control circuit is configured to obtain a plurality of sub-images; in a process of emitting beams of three primary colors by the light source assembly to the light valve sequentially, control, according to primary color parameters of the pixels in each sub-image, the light valve to sequentially reflect beams corresponding to the plurality of sub-images to the vibrating lens; and in a process of projecting each sub-image, transmit a vibrating lens current control signal corresponding to the sub-image to the vibrating lens drive assembly. The vibrating lens drive assembly is configured to provide at least one vibrating lens driving current to the vibrating lens according to the vibrating lens current control signal corresponding to the sub-image.

Abstract: A laser projection apparatus and a laser projection display method are provided. The laser projection apparatus includes a laser source, an optical engine, a projection lens, and a power system architecture. The power system architecture includes a digital light processing (DLP) control processing portion. The DLP control processing portion is configured to: output a first enable signal and a first luminance adjustment signal to a laser driver circuit and a first drive signal to a digital micro-mirror device, in the first period; output a second enable signal and a second luminance adjustment signal to the laser driver circuit and a second drive signal to the digital micro-mirror device, in the second period. The laser driver circuit is configured to: drive a laser array to emit a primary color beam in the first period, and drive the laser array to be turned off in the second period.

Abstract: A projection screen and a projection apparatus are provided. The projection screen includes a base, a rolling mechanism, a lifting mechanism, an optical curtain and a guide roller. The rolling mechanism is disposed on the base, and the rolling mechanism includes a reel. A first end of the lifting mechanism is fixedly connected to the base. A first end of the optical curtain is fixedly connected to the rolling mechanism, and a second end of the optical curtain is fixedly connected to a second end of the lifting mechanism, the optical curtain includes an optical film, a first end of the optical film is fixedly connected to the reel. The guide roller is disposed at a position where the second end of the lifting mechanism is proximate to the rolling mechanism, and the guide roller is configured to press the optical curtain.

Abstract: A laser projection apparatus and a dispersion correction method for a projection image are provided. The laser projection apparatus includes a laser source assembly, a light modulation assembly, a projection lens, and a controller. The controller is configured to: obtain a first projection image; determine a dispersion correction parameter according to a position of an image of a reference color on a screen and a position of an image of an adjusted color on the screen; and correct an image to be projected according to the dispersion correction parameter, and transmit an image signal of the corrected image to be projected to the light modulation assembly, so as to make the light modulation assembly modulate illumination beams to obtain projection beams by using the image signal. The reference color is one of a plurality of primary colors and different from the adjusted color.

Abstract: A laser projection apparatus includes a laser source, an optical engine and a projection lens. The optical engine includes a light homogenizing component. The laser source includes a light-emitting assembly, a combining component, a first lens, a phosphor wheel and a laser dimming component. The combining component includes a reflecting portion and a transmitting portion. The phosphor wheel includes a first region and a second region. The laser dimming component is located between the light-emitting assembly and the phosphor wheel, and configured to increase Etendue of a laser beam emitted by the light-emitting assembly and change a shape of a beam spot provided by the laser beam on the phosphor wheel, so as to make a beam spot provided by the laser beam and the fluorescent beam at a beam inlet of the light homogenizing component matched with a shape of the beam inlet of the light homogenizing component.

Abstract: Embodiments of the present application provide a laser light source and a laser projection device. The laser light source includes a laser assembly and a light combination mirror assembly. The laser assembly includes at least a laser, a light emitting surface of the laser has a plurality of light emitting regions, and beams emitted from different ones of the plurality of light emitting regions are in different colors. The light combination mirror assembly includes a plurality of mirrors that are sequentially arranged along an optical transmission path of the laser, with each of the mirrors corresponding to one of the light emitting regions. The light combination mirror assembly is used to converge the beams in different colors emitted from the laser to form a white beam.

Abstract: A laser device and a laser source assembly are provided. The laser device includes a base, a plurality of frames, a plurality of groups of laser chips, and a plurality of collimating lens groups. Any frame is correspondingly provided with a group of laser chips. Any group of laser chips includes a plurality of laser chips. Any collimating lens group includes a plurality of collimating lenses. The plurality of collimating lenses correspond to the plurality of laser chips, respectively. Any collimating lens is located on a laser-exit path of a corresponding laser chip.

Abstract: A laser projection apparatus includes a laser source assembly, a light modulation assembly, and a projection lens. The laser source assembly includes a laser device, a microlens array, a combining component, and a phosphor wheel. The microlens array is configured to increase divergence angles of the plurality of laser beams in a slow axis direction and a fast axis direction, so as to make a ratio of divergence angles of the laser beams diverged by the microlens array in the slow axis direction and the fast axis direction be proportional to a length-width ratio of the light inlet of the light pipe. The combining component is configured to reflect laser beams and a fluorescent beam exiting from the phosphor wheel and transmit the plurality of laser beams emitted by the laser device. The phosphor wheel is configured to reflect the laser beams and be excited to emit the fluorescent beam.

Abstract: A laser projection apparatus is provided and includes an optical modulating assembly, a vibrating device, a projection lens, and a circuit architecture. The circuit architecture includes an image processing sub-circuit and a display driving sub-circuit. The image processing sub-circuit is configured to perform frame division on image data of an image to be displayed to obtain image signals of a plurality of frames of sub-images to generate a frame division control signal. The display driving sub-circuit is configured to output the image signals of the plurality of frames of sub-images to the optical modulating assembly and output a vibration instruction to the vibrating device based on the output timing of the image signals of the plurality of frames of sub-images, so as to control the vibrating device to perform vibrations, so that the projection beams are output through the vibrating device.

Abstract: A projection apparatus includes a main control circuit, a power supply, a display driving circuit, an audio playback component and a display component. The main control circuit is configured to send a first image signal to the display driving circuit. The display driving circuit is configured to receive the first image signal, and control the display component to display an image corresponding to the first image signal. The main control circuit is further configured to send a second image signal and an audio signal corresponding to the second image signal to the display driving circuit and the audio playback component, respectively. The display driving circuit is configured to receive the second image signal and control the display component to display an image corresponding to the second image signal, and the audio playback component is configured to receive the audio signal and play audio corresponding to the audio signal.

Abstract: A laser projector includes a laser assembly, a beam combination mirror group and a phase delaying component. The laser assembly includes a red laser light emitting region, a blue laser light emitting region and a green laser light emitting region. Red laser light is polarized in a first direction, green laser light is polarized in a second direction, and blue laser light is polarized in a third direction. The beam combination mirror group combines the red laser light, the blue laser light and the green laser light. The phase delaying component is on a light emitting path of at least one of the red laser light, the blue laser light the green laser light, and changes a polarization direction of the at least one of the red laser light, the blue laser light or the green laser light before being output by the beam combination mirror group.

Abstract: A laser projection apparatus includes a laser source assembly, a light modulation assembly, and a projection lens. The laser source assembly includes a laser device, a combining lens group, and a fly-eye lens. The laser device is configured to emit laser beams of three colors. The laser beams of the three colors includes a blue laser beam, a green laser beam, and a red laser beam. The combining lens group is located on a laser-exit side of the laser device and configured to combine the laser beams emitted by the laser device. The fly-eye lens is located on a laser-exit side of the combining lens group and configured to homogenize the laser beams emitted by the laser device.

Abstract: A projection screen and a projection apparatus are provided. The projection screen includes a base, a rolling mechanism, a lifting mechanism, an optical curtain and a tensioning mechanism. The rolling mechanism is disposed on the base. A first end of the lifting mechanism is fixedly connected to the base. A first end of the optical curtain is fixedly connected to the rolling mechanism, and a second end of the optical curtain is fixedly connected to a second end of the lifting mechanism. A tensioning mechanism is fixedly connected to the rolling mechanism and the second end of the lifting mechanism. The lifting mechanism is located between the optical curtain and the tensioning mechanism. The projection apparatus includes the above projection screen and an optical engine.

Abstract: A laser projection apparatus includes a laser source, a light modulation assembly, and a projection lens. The laser source includes a laser device, a combining lens group, and a polarization conversion component. The combining lens group is located on a laser-exit side of the laser device and configured to combine laser beams of different colors emitted by a light-emitting group to a same position and propagate the combined laser beam in a preset direction. The polarization conversion component is configured to change a polarization direction of a portion of the laser beam of at least one color. The light modulation assembly includes a fly-eye lens group. The fly-eye lens group is located on a laser-exit side of the laser source and configured to homogenize the incident laser beam.

Abstract: Embodiments of the present application provide a laser light source and a laser projection device. The laser light source includes a laser assembly and a light combination mirror assembly. The laser assembly includes at least a laser, a light emitting surface of the laser has a plurality of light emitting regions, and beams emitted from different ones of the plurality of light emitting regions are in different colors. The light combination mirror assembly includes a plurality of mirrors that are sequentially arranged along an optical transmission path of the laser, with each of the mirrors corresponding to one of the light emitting regions. The light combination mirror assembly is used to converge the beams in different colors emitted from the laser to form a white beam.

Abstract: A laser projection display method includes: in an output period for a laser source to output a primary color beam, controlling the laser source to be turned off according to a set rotation switching period, the rotation switching period indicating a moment when the laser source is turned off and a moment when the laser source is turned on; in the rotation switching period, driving micro-mirrors in a digital micro-mirror device to perform rotation switching between an ON state and an OFF state until the moment when the laser source is turned on indicated by the rotation switching period is reached; and when the moment when the laser source is turned on is reached, controlling the laser source to be turned on, and driving the micro-mirrors to rotate to project and display an image to be displayed until a next rotation switching period is reached.

Abstract: A laser device includes a shell, an upper cover assembly, a plurality of light-emitting assemblies, and a plurality of conductive pins. The shell includes a base plate, a frame body, and a first flange. The first flange is bent relative to the frame body and is fixedly connected to the base plate. The upper cover assembly is fixed to the shell. The plurality of light-emitting assemblies are disposed on the base plate. Any one of the plurality of conductive pins is electrically connected to a light-emitting assembly. The frame body includes a plurality of flanging holes. A depth of any one of the plurality of flanging holes is greater than a thickness of the frame body. A portion of the any one of the plurality of conductive pins is located at an outside of the accommodating space through a corresponding flanging hole.

Abstract: A laser projection apparatus includes a laser source, a light modulating device, a projection lens, and a circuit system. The circuit system is configured to control the laser source to emit laser beams of at least N primary colors. N is an integer greater than or equal to 3. The circuit system structure includes a display control circuit and a laser source driving circuit. The display control circuit is configured to output N PWM signals and three enable signals. The laser source driving circuit is electrically connected to the display control circuit, and is configured to receive N PWM signals and three enable signals, so as to drive laser chips of corresponding colors to emit laser beams of the at least N colors.

Abstract: A laser source assembly and a projection apparatus are provided. The laser source assembly includes a laser device, a combining lens group, and a polarization direction adjustment component. The laser device is configured to emit laser beams of a plurality of colors. The combining lens group is configured to combine the laser beams of the plurality of colors and propagate the combined laser beams in a first direction. The polarization direction adjustment component is configured to adjust a polarization direction of at least a portion of the laser beams of the plurality of colors to obtain a target laser beam. A laser beam of at least one color in the target laser beam satisfies that the polarization direction of a portion of the laser beam of a same color is different from the polarization direction of another portion of the laser beam of a same color.

Abstract: A laser projection apparatus includes a main control circuit, a diffusion wheel driving circuit and a temperature sensor. The temperature sensor is electrically connected to the main control circuit, and configured to detect an ambient temperature. The main control circuit is configured to: determine a target starting current according to the ambient temperature; determine a duty cycle of a second startup pulse width modulation signal according to the target starting current, and provide the second startup pulse width modulation signal to the diffusion wheel driving circuit; and output an operating pulse width modulation signal to the diffusion wheel driving circuit when the diffusion wheel reaches a target rotation speed. The target starting current is a minimum drive current required to drive the motor from standstill to starting to rotate. The target rotation speed is a preset speed at which the diffusion wheel operates normally and speckles are eliminated.