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Method for realizing display of image and character in three-dimensional space by laser scanning

A three-dimensional space, laser scanning technology, applied in the direction of display devices, optics, optical components, etc., can solve problems such as realization

Inactive Publication Date: 2009-12-23
王一诺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the production of such media requires special equipment, so that the laser scanning display is limited by many conditions, and it is difficult to realize it in a general atmospheric environment.

Method used

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  • Method for realizing display of image and character in three-dimensional space by laser scanning
  • Method for realizing display of image and character in three-dimensional space by laser scanning
  • Method for realizing display of image and character in three-dimensional space by laser scanning

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Experimental program
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Embodiment 1

[0036] figure 1 A first embodiment of the present invention is given. In the first embodiment, the laser 1 adopts one monochromatic laser, and the laser modulator 2 adopts an acousto-optic modulator. After the laser output by the acousto-optic modulation is collimated, it is split by a laser beam splitter 3 (see figure 2 ), the beam-splitting laser enters the scanning system 4 (see image 3 ), the scanning system 4 is composed of a two-dimensional high-speed scanning vibrating mirror array or a rotating mirror array controlled by a high-speed motor. The intensity of several laser beams split in the laser beam splitter 3 is approximately equal, and the light of a single beam in space Strong will not form an impact on the viewer's vision, so the scanning system 4, under the action of the synchronous control 5 and the input control 6, makes each beam of split light shoot to the predetermined display area 7 at the same time, and each beam of light converges on the display area 7...

Embodiment 2

[0053] Figure 5 The second embodiment of the present invention is given, and the difference from embodiment 1 is that the laser 1 adopts three primary color lasers, and the three lasers 1a, 1b, 1c respectively output three beams of laser light with different wavelengths, and the modulators 2a, 2b, 2c pair The three lasers 1a, 1b, and 1c are respectively modulated, and the modulation voltage is determined according to the gray value of each color. The adjusted three laser beams are combined into one beam after being reflected and transmitted by the mirrors 15a, 15b, and 15c. The three reflectors are coated to ensure full transparency for the transmitted laser wavelength and full reflection for the reflected laser wavelength. The synthesized laser light enters the beam splitter 3 , and the scanning system 4 displays images or characters or images and characters in a predetermined space 7 under the control of the synchronous control 5 and the input control 6 .

Embodiment 3

[0055] Image 6 The third embodiment of the present invention is given. In this embodiment, several lasers are used to form the required number of laser beams. The number of laser beams must be at least more than 20, and the number of required beams should be selected from the following aspects: A. There are too few beams. When each beam of light does not reach the converging point in space, the diffuse reflection will affect the final display. image quality. B. Too many light beams will increase the difficulty and cost of system control.

[0056] For clarity, Image 6 A system composed of four lasers is given, lasers 1a, 1b, 1c, and 1d represent different lasers, and 2a, 2b, 2c, 2d represent modulators corresponding to 1a, 1b, 1c, and 1d. After being modulated by the modulators 2a, 2b, 2c, 2d, the output light of 2a, 2b, 2c, 2d enters the scanning system 4, and under the control of the synchronous control 5 and the input control 6, images or characters or images and charac...

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Abstract

The invention relates to a technology for realizing the display of images and characters by laser scanning, in particular to a method for realizing display of image and character in three-dimensional space by laser scanning. The invention is characterized in that the same image or character or the image and the character are synchronously scanned and output at the same time in the same space by the control of a plurality of laser beams emitted by a plurality of lasers. As the laser beams are controlled from different angles, the same image or character or the image and the character are scanned and output in a superposition way simultaneously in the same space, therefore, each beam of laser generates scattered light toward different directions when being converged into a point in the space, and all spectators on the ground can view the image output by scanning at effective distance and effective angle.

Description

technical field [0001] The invention relates to a technique for displaying images and characters by laser scanning, in particular to a method for displaying images and characters in three-dimensional space by laser scanning. Background technique [0002] At present, there are two main aspects of laser display technology: [0003] 1) Application in TV technology. On the one hand, laser TV utilizes the superior monochromatic performance of three-color laser to achieve richer laser color performance. On the other hand, by scanning the laser beam point by point on the display screen, the back of the large screen is carried out to realize high-definition TV display. [0004] 2) Application in space display. Use laser to scan water mist, smoke, and medium surfaces (such as curtains) to realize image or text display. Use the three-color laser beam to scan point by point on the water mist, smoke, and curtain to form images and text pictures, and form visual effects in the human ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G09F19/12
Inventor 王一诺蔡瑶马闵
Owner 王一诺
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