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Angle diversity-type optical receiving antenna with filled compound parabolic condensers

A technology of optical receiving antenna and compound paraboloid, which is applied in the direction of optics, condenser mirrors, optical components, etc., can solve the problems of difficult application of VLC system, good focusing effect, and small field of view of optical antenna, so as to reduce the spot size, improve the receiving energy, Improve the effect of receiving field of view

Inactive Publication Date: 2017-06-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional optical antennas have a small field of view when the gain is large, and it is difficult to guarantee a good focusing effect when the field of view is large, so it is difficult to apply to the VLC system

Method used

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  • Angle diversity-type optical receiving antenna with filled compound parabolic condensers
  • Angle diversity-type optical receiving antenna with filled compound parabolic condensers
  • Angle diversity-type optical receiving antenna with filled compound parabolic condensers

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the drawings.

[0031] The invention is designed for the wide field of view reception of indoor white light LED visible light high-speed communication.

[0032] Indoor white light LED communication has to take into account the lighting function of the system and is limited by the power of a single LED lamp, so it requires a multi-light source layout of multiple groups of LEDs. Under different light source layouts, the requirements of the receiving signal angle at each position in the room are different, so a larger receiving antenna field of view angle is required.

[0033] In view of the above demand analysis, the present invention provides an angle diversity type filled compound parabolic concentrator CPC optical receiving antenna, which uses the compound parabolic concentrator CPC as the basic unit of indoor white light LED communication reception, because CPC is a non-imaging concentrator ...

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Abstract

The present invention discloses an angle diversity-type optical receiving antenna with filled compound parabolic condensers. A whole field of view angle that an angle diversity-type compound parabolic condenser CPC optical antenna can reach is large, and the whole field of view angle can be up to 360 degrees in the horizontal direction, and be up to 180 degrees in the vertical direction. Occurrence of a blind region in the communication can be effectively prevented, CPC units are symmetrically arranged in a hemisphere, and when the optical antenna is placed in any position of a room, a receiving effect cannot be affected. An angle diversity receiving technology is adopted, and the large field of view of the optical antenna is maintained without sacrificing light energy receiving gain of the system. A gradient index lens is adopted, has a light concentrating function, and can effectively reduce the size of the output faculae, improve the receiving energy of a detector per unit area, and improve the receiving gain of the optical receiving antenna; according to different application requirements, the gradient index lenses with different materials and variation laws can fill the CPCs with the same standard, achieving flexibility and variation; and when an optical signal in the same field of view angle is received, the antenna has a smaller size and is smart and convenient.

Description

Technical field [0001] The invention relates to a receiving antenna technology in the application field of visible light communication, and in particular to an angle diversity optical receiving antenna with a filled compound parabolic concentrator as a basic unit. It is used for the large-angle optical signal reception of the indoor visible light communication system with white LED as the light source, which can increase the receiving field of view while ensuring the receiving gain. Background technique [0002] Visible Light Communication (VLC) is a new type of wireless optical communication technology with white light emitting diodes (LED) as the light source. It does not occupy spectrum bandwidth, has no electromagnetic interference, and has both lighting and communication functions. Communication methods with development potential. The optical receiving antenna of the system is placed in front of the receiver to condense as much light energy as possible on the receiving surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116H04B10/67G02B19/00
CPCG02B19/0009G02B19/0085H04B10/116H04B10/67
Inventor 蓝天王岱王云刘品伟倪国强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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