Hisense USA Corporation

Hisense International Co., Ltd.

Hisense Co., Ltd.

Hisense Laser Display Co., Ltd.

Hisense Group Co., Ltd.

Xianrong Liu

Wei Li

Youliang Tian

Fei Zhao

Qiang Wang

Zhen Wang

Dabo Guo

Ruhai Guo

Hongyan Liu

Disclosed by the present application are a laser projection device and projection display method thereof, belonging to the technical field of laser projection. The laser projection device may comprise: a light source, a light modulation device, and a projection lens. The light source is used for providing an illumination beam. The light modulation device is used for modulating the illumination beam, at least two illumination beams being incident on at least two light-reflecting surfaces of the light modulating device, the light-reflecting surface types of the at least two light-reflecting surfaces being different, and the at least two illumination beams after modulation being of different light intensity; the projection lens is used for projecting the modulated illumination beam for imaging. The described laser projection device improves the display of the projected image.

Laser projection device and projection display method thereof

A dual-color projector is disclosed that includes a blue laser device configured to emit a blue laser light, a red laser device configured to emit a red laser light, and a fluorescent wheel whose surface is coated with green fluorescent powder which is excitable by the blue laser light to emit a green fluorescent light. The dual-color projector may also include a first diffusion element and a second diffusion element.

Dual-color projector

The light source device includes a laser for generating laser light, a fluorescent wheel, a filter wheel and a control unit. The fluorescent wheel includes a reflection section, and a transmission section. First and second phosphors are attached on a surface of the reflection section, and the first phosphor is excited by the laser light to emit yellow light and the second phosphor is excited by the laser light to emit green light. The filter wheel comprises a transparent section, a red filter section and a green filter section. The control unit controls the fluorescent wheel and the filter wheel to rotate in synchronization. the laser light emitted from the transmission section of the fluorescent wheel and a part of the yellow light enter into the transparent section, another part of the yellow light enter into the red filter section, and the green light enter into the green filter section.

Light source device and projection display device

A laser light source is disclosed that includes a laser device, a first diffusion element, a fluorescence wheel, and a second diffusion element. The fluorescence wheel emits a fluorescent light when excited by the laser light, and before reaching the fluorescence wheel, the laser light emitted by the laser device is transmitted through the first diffusion element that is fixedly arranged. As the second diffusion plate rotates about its axis, the laser light from the first diffusion element and the fluorescent light from the fluorescence wheel transmit through the second diffusion plate.

Laser light source and projection display device

A laser projection display device, relating to the technical field of laser, including a laser light source having a light source shell, an airtight device fixed on an inner wall of the light source shell, and a laser device provided in the interior of the airtight device. The airtight device having a sealing housing and a gas pressure adjustment structure, the sealing housing is fixed on an inner wall of the light source shell, the gas pressure adjustment structure is arranged on one side of the sealing housing, the sealing housing is communicated with the gas pressure adjustment structure, and the gas pressure adjustment structure is configured to adjust the volume of the airtight device.

Laser light source and laser projection display device

This disclosure provides a laser speckle-removing optical component, including a beam-shrinking lens group and a diffusion sheet arranged on a laser emergent optical path, where the beam-shrinking lens group includes a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is located between the first beam-shrinking lens and the second beam-shrinking lens, and a distance between the diffusion sheet and the first beam-shrinking lens is shorter than a focal length of the first beam-shrinking lens. The arrangement of the diffusion sheet between the first beam-shrinking lens and the second beam-shrinking lens is able to alleviate the accumulation phenomenon of dust particles on the diffusion sheet, therefore, alleviating light attenuation phenomenon, and prolonging the service life of the laser source. This disclosure also provides a double-color laser source, a three-color laser source and a laser projection equipment applying the above laser speckle-removing optical component.

Laser speckle-removing optical component, laser source and laser projection equipment

Methods and apparatuses that provide a technical solution for handling a microphone operation request from more than one application is disclosed. The technical solution for processing data obtained by a microphone of a terminal device includes receiving an audio recording start command sent by a second application running on the terminal while the microphone is being used by a first application running on the terminal. The technical solution further includes assigning an unoccupied data receiving port to the second application, acquiring and broadcasting audio recording data collected by the microphone through a data sending port, receiving the audio recording data by the assigned data receiving port, and sending the audio recording data to the second application by the assigned data receiving port.

Dual-color laser light source

An embodiment of the present disclosure discloses a method for detecting flatness of a fluorescent wheel in a laser light source, comprising: acquiring, during the rotation of a fluorescent wheel, a spot of laser light emitted by a laser reflected from a substrate of the fluorescent wheel; determining an inner diameter of the spot; and determining flatness of the fluorescent wheel according to the inner diameter of the spot.

Method and device for detecting flatness of a fluorescent wheel in a laser light source

The disclosure provides a fluorescent wheel, including a fluorescent region and a transmission region; the fluorescent region has fluorescence powder for emitting fluorescence under excitation by excitation laser; and the transmission region is for transmitting laser; the fluorescent wheel is for diffusing at least laser to be transmitted. Using fluorescent wheel to diffuse laser enables laser transmission meanwhile removing speckles by diffusion, sparing a separate speckle-removing component, improving light processing efficiency of fluorescent wheel. The disclosure also provides a double-color laser source using the fluorescent wheel, and a laser projection equipment including the double-color laser source, which can output three-primary-color light via fluorescent wheel component, meanwhile removing speckles for double-color laser, thereby reducing usage of optical components, and lowering complexity of optical architecture of double-color laser source, contributing to miniaturization of laser projection equipment. The disclosure is applied in the field of laser illumination display technologies.

Fluorescent wheel, double-color laser source and laser projection equipment

The disclosure discloses a light source device and a projection display device. The light source device includes a laser for generating laser light, a fluorescent wheel, a filter wheel and a control unit, wherein the fluorescent wheel includes at least one reflection section, and at least one transmission section capable of transmitting the laser light; and at least one phosphor capable of being excited by the laser light to emit yellow light, and at least one phosphor capable of being excited by the laser light to emit green light are attached on the surface of the reflection section; the filter wheel includes at least one transparent section, at least one red filter section and at least one green filter section.

The present disclosure relates to a laser light source and a projection display device. The laser light source includes: N groups of laser devices, N convex lenses, a concave lens and at least one reflector component; each convex lens corresponds to a group of laser devices, and is configured to converge light beams emitted by the corresponding group of laser devices; each reflector component corresponds to at least one convex lens and is disposed in a emergent light direction of a corresponding convex lens, and the concave lens is disposed in a emergent light direction of the at least one reflector component; and an emergent light beam of the convex lens corresponding to each reflector component passes through the reflector component and then arrives at the concave lens.

The disclosure discloses a light source assembly and a laser projector. An embodiment of the disclosure provides a light source assembly including a laser light emitter in at least one color, and a light guiding element arranged in a light path over which a light beam of the laser light emitter is transmitted; the light guiding element is configured to be moved to change the emergent angle of laser light beam being transmitted, thus adjusting the light path conveniently.

Light source assembly and laser projector

This disclosure provides a laser speckle-removing optical component, including a beam-shrinking lens group and a diffusion sheet arranged on a laser emergent optical path, where the beam-shrinking lens group includes a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is located between the first beam-shrinking lens and the second beam-shrinking lens. The arrangement of the diffusion sheet between the first beam-shrinking lens and the second beam-shrinking lens, increases the area of speckles received by the diffusion sheet component, reduces energy density of the light received, and is able to alleviate the accumulation phenomenon of dust particles on the diffusion sheet, therefore, alleviating light attenuation phenomenon, and prolonging the service life of the laser source. This disclosure also provides a double-color laser source, a three-color laser source and a laser projection equipment applying the above laser speckle-removing optical component.

A device for converting wavelength and a projection light source are disclosed in the present disclosure. According to an example, the device may comprise a roller, a drive motor, a first reflector, a support shaft, a drive module and a dichroic film. An axis of the support shaft may be coincided with an axis of the roller. The support shaft may be not rotated with rotation of the roller. The drive motor may drive the roller rotate around the support shaft and the drive module may drive the roller to move back and forth along an axial direction of the support shaft. So excitation light reflected by the first reflector may be incident uniformly on the sidewall of the roller. Therefore, fluorescent powder conversion efficiency may be improved compared with that of the excitation light incident on a fixed area.

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Qingdao, China

Xianrong Liu