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Visible light communication device

A visible light communication and optical signal technology, applied in the field of communication, can solve the problem of large light diffusion angle, and achieve the effect of simplifying the structure, reducing the volume, and extending the communication distance

Inactive Publication Date: 2019-04-12
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a visible light communication device, which is used to solve the problem in the existing visible light communication device that the light emitted by a light emitting source has a large diffusion angle, so as to improve the communication efficiency of the visible light communication device

Method used

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Examples

Experimental program
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Embodiment Construction

[0027] The specific embodiments of the visible light communication device provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0028] This specific embodiment provides a visible light communication device, with the attached figure 1 It is a block diagram of the structure of the transceiver module in the specific embodiment of the present invention. figure 2 It is a schematic diagram of the structure of the neutron light source and the photodetector according to the specific embodiment of the present invention. image 3 It is a schematic cross-sectional view of the transceiver module in the specific embodiment of the present invention.

[0029] like figure 1 , figure 2 , image 3 As shown, the visible light communication device provided by this specific embodiment includes a transceiver module 10; the transceiver module 10 includes:

[0030] The emission unit 11 includes a light source 111 and a first lens 112...

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Abstract

The invention relates to the technical field of communication and particularly relates to a visible light communication device. The visible light communication device comprises a transceiving module.The transceiving module comprises a transmitting unit which comprises a light source and a first lens, wherein the first lens is located at a light emitting surface of the light source and is used forconverging first optical signals transmitted by the light source, and the light source comprises a plurality of sub-light sources; and a receiving unit which comprises a photoelectric detector, wherein the plurality of sub-light sources are set around a periphery of the photoelectric detector, and the photoelectric detector is used for receiving second optical signals from the outside world and converting the second optical signals into electric signals. According to the device, divergence angles for transmitting light are reduced, and transmitting performance and receiving performance of thedevice are improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a visible light communication device. Background technique [0002] Visible Light Communication (VLC) is a new, short-range, high-speed wireless communication technology developed on technologies such as Light Emitting Diode (LED) or laser light source. Although the laser light source has good directivity and high brightness, its cost is relatively high. Therefore, LED is mainly used as the emission light source in the visible light communication system at present. A visible light communication device that uses LED as the emission light source, uses the atmosphere or water as the transmission medium, transmits information by sending visible light signals that are imperceptible to the naked eye, high-speed bright and dark flickering, and uses light-emitting diodes (Photodiode, PD) at the receiving end to complete photoelectric conversion. , and then receive,...

Claims

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Application Information

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IPC IPC(8): H04B10/40H04B10/116
CPCH04B10/116H04B10/40
Inventor 王永进王钥杨博李金佳
Owner NANJING UNIV OF POSTS & TELECOMM