Hisense International Co., Ltd.

Hisense USA Corporation

Hisense Co., Ltd.

Hisense Laser Display Co., Ltd.

Hisnese Co., Ltd.

Hisense Laser Display Go., Ltd.

Rongrong Cui

Jianfeng Li

Xinhong Lin

Youliang Tian

Xu Chen

Kai Wu

Ke Yan

Xiuyan Cao

Guangxue Liu

Liming Cao

Chongyang Zhang

A laser projection apparatus includes a laser source assembly, a display control circuit, a signal shaping circuit and a laser source driving circuit. The display control circuit is configured to output a first driving signal and a second driving signal. The signal shaping circuit is coupled to the laser source driving circuit, and is configured to shape the first driving signal based on a shaping signal to obtain a target driving signal. A frequency of the target driving signal is higher than a frequency of the first driving signal. The laser source driving circuit is coupled to the laser source assembly, and is configured to receive the second driving signal and the target driving signal, and drive the laser source assembly to be turned on or turned off in response to the second driving signal and the target driving signal.

Laser projection apparatus and method for driving laser source assembly

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.

Projection apparatus and projection display method

A laser projection apparatus includes a laser source, an optical engine, a projection lens, and a circuit system architecture. The circuit system architecture is configured to control the laser source to emit laser beams of three primary colors. The circuit system structure includes: a display control circuit, a first laser chip driving circuit, a second laser chip driving circuit, and a third laser chip driving circuit. The display control circuit is configured to generate three PWM signals and three enable signals. The laser chip driving circuit is electrically connected to the display control circuit, and is configured to receive a PWM signal of a corresponding color and an enable signal of the corresponding color, so as to drive a laser chip of the corresponding color to emit laser beams of the corresponding color.

Laser projection device

The present application discloses a laser light source driving method, a laser light source and a laser projector, and belongs to the field of laser technology. The driving method includes: continuously outputting, by a first laser assembly, laser light in a first color during an output time interval of a ray in the first color; and during at least part of the output time interval of the ray in the first color, exciting a fluorescent sub-assembly with laser light in a second color to induce fluorescence in the first color, and outputting the fluorescence in the first color, the laser light in the second color being emitted by a second laser assembly.

Laser light source driving method, laser light source and laser projector

A laser light source is provided. The laser light source includes: a laser device; a first color wheel and a second color wheel, on both of which there are corresponding color regions, wherein the laser device emits laser which illuminates the first color wheel and the second color wheel sequentially, and exits from the color regions on the second color wheel; a first marker and a second marker arranged respectively on the first and the second color wheels; a first sensor configured to detect the first marker, and to generate a first sense signal; a second sensor configured to detect the second marker, and to generate a second sense signal; and a control unit configured to synchronize the first color wheel and the second color wheel.

Laser light source, method for controlling dual color wheels of light source, and laser projection device

Growing community of inventors

Qingdao, China

Rongrong Cui