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Three-primary-color laser single DLP projection system

A technology of projection system and three primary colors, which is applied to the image reproducer of projection device, optics, color TV, etc., can solve the problems of complex structure, simplify the optical path structure, improve the color gamut of the displayed image, and avoid the problem of double color wheel synchronization. Effect

Inactive Publication Date: 2020-08-28
中国科学技术大学智慧城市研究院(芜湖) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The laser phosphor projection adopts a two-color wheel structure, and it is necessary to read the marking positions of the two color wheels to achieve synchronization, and the structure is complex.

Method used

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  • Three-primary-color laser single DLP projection system
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  • Three-primary-color laser single DLP projection system

Examples

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Embodiment Construction

[0021] Such as Figures 1 to 3 as shown, figure 1 It is a schematic diagram of module connection of a three-primary-color laser single DLP projection system proposed by the present invention, figure 2 It is a schematic diagram of an optical path of an embodiment of a three-primary-color laser single DLP projection system proposed by the present invention, image 3 It is a schematic diagram of an optical path of another embodiment of a three-primary-color laser single DLP projection system proposed by the present invention.

[0022] refer to figure 1 , a kind of trichromatic laser single DLP projection system proposed by the present invention, comprises: control board, laser module, DMD chip, projection lens;

[0023] The laser module, DMD chip and projection lens are arranged sequentially along the optical path;

[0024] The laser module includes a laser drive circuit and an RGB laser light source 21;

[0025] The control main board is connected with the laser drive circ...

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Abstract

The invention discloses a three-primary-color laser single DLP projection system, which is characterized in that a control mainboard is in signal connection with a laser device driving circuit and a DMD chip, the control mainboard is used for controlling the driving current of the laser device driving circuit so as to control a RGB laser light source to emit light and controlling the DMD chip to perform image modulation on the laser emitted by the RGB laser light source, and a projection lens is used for projecting the light path modulated by the DMD chip. According to the optimally designed three-primary-color laser single DLP projection system, the DLP control mainboard is used for providing signals, and compared with the single-primary-color fluorescent powder and double-primary-color fluorescent powder laser projection technology, the complex double-color wheel synchronization problem is avoided, the light path structure is simplified, and the cost is low; and the laser high saturation characteristic is utilized, a light source adopts a laser device, and the display image color gamut is improved.

Description

technical field [0001] The invention relates to the field of laser projection display, in particular to a three-primary-color laser single DLP projection system. Background technique [0002] Laser display technology has attracted increasing attention due to its advantages of wide color gamut, high brightness, high saturation, and the ability to truly reproduce the colorful colors in nature. [0003] Generally speaking, the core part of a projection display is a spatial light modulator. Common spatial light modulators include MEMS technology digital micromirror device DMD, HTPS technology LCD display chip and reflective LCD device LCOS. According to the number of spatial light modulators in the projection system, it is generally divided into single-chip and three-chip projection systems. The single-chip projection system has a large market share because of its simple structure and low cost. [0004] At present, the mainstream projection technologies on the market are divi...

Claims

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Application Information

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IPC IPC(8): G03B21/20G03B21/00H04N9/31
CPCG03B21/008G03B21/2033H04N9/3102H04N9/312
Inventor 邓林宵杨雨桦郭喜董天浩姚昞晖
Owner 中国科学技术大学智慧城市研究院(芜湖)
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