Communication system based on matrix illumination and holographic waveguide antenna

A holographic waveguide and communication system technology, applied in the field of holographic waveguide antennas, can solve the problem of low light receiving efficiency of visible light communication antennas

Active Publication Date: 2017-05-31
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the above, the receiving light efficiency of the volume holographic grating visible light communication antenna is very low, and its structure needs to be improved to further improve the receiving light efficiency

Method used

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  • Communication system based on matrix illumination and holographic waveguide antenna
  • Communication system based on matrix illumination and holographic waveguide antenna
  • Communication system based on matrix illumination and holographic waveguide antenna

Examples

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Embodiment Construction

[0071] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0072] Such as figure 1 Shown is a visible light communication system based on a matrix lighting system in the present invention, including a matrix lighting and visible light communication terminal, and a holographic waveguide antenna. The matrix lighting and visible light communication terminal are used to illuminate a certain area of ​​indoor environment and perform short-distance wireless communication , the matrix lighting and visible light communication termina...

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Abstract

The invention discloses a communication system based on matrix illumination and a holographic waveguide antenna. Divergent light of LEDs is modulated into parallel light through a lens array; the direction of the light is controlled at the same time, and the incident angle relations, corresponding to all regions, between a light source and a target plane are established; and the incident angles, in the regions, of the parallel light are different, and a secret communication effect in the regions can be achieved through a corresponding holographic waveguide antenna. Meanwhile, according to the holographic waveguide antenna provided by the invention, by adoption of a holographic waveguide structure, light signals received in a large-area receiving end Rx can be integrated into an output end Ox through a signal modulation end Mx, and thus the effect of enhancing the received signals is achieved.

Description

technical field [0001] The invention relates to a holographic waveguide antenna of a communication lighting system based on matrix lighting, belonging to the field of short-distance visible light communication. Background technique [0002] At present, intelligent lighting technology is slowly entering the modern office lighting system. Intelligent lighting technology includes partition matrix lighting technology, intelligent light mixing, and timing switch functions. It can even transmit information by controlling the light-emitting frequency of LEDs to achieve short-distance communication. Visible light communication has the advantage of realizing secure communication, while the light emitted by conventional lighting systems (LED lamp tubes, LED bulbs, etc.) has a certain divergence angle (LED divergence angle is about 120 degrees), so it can ensure that it can illuminate all indoor areas. Therefore, the security effect of indoor short-distance visible light communication ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/69F21V5/04H05B33/08F21Y115/10F21Y115/15H05B44/00
CPCF21V5/04H05B45/00
Inventor 张宇宁沈忠文王萍翁一士刘奡
Owner SOUTHEAST UNIV
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