WO2014147666A1 - Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace - Google Patents

Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace Download PDF

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Publication number
WO2014147666A1
WO2014147666A1 PCT/JP2013/001955 JP2013001955W WO2014147666A1 WO 2014147666 A1 WO2014147666 A1 WO 2014147666A1 JP 2013001955 W JP2013001955 W JP 2013001955W WO 2014147666 A1 WO2014147666 A1 WO 2014147666A1
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WO
WIPO (PCT)
Prior art keywords
light
space
dividing device
space dividing
light receiving
Prior art date
Application number
PCT/JP2013/001955
Other languages
English (en)
Japanese (ja)
Inventor
稔 上猶
Original Assignee
Kaminao Minoru
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaminao Minoru filed Critical Kaminao Minoru
Priority to PCT/JP2013/001955 priority Critical patent/WO2014147666A1/fr
Publication of WO2014147666A1 publication Critical patent/WO2014147666A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD

Definitions

  • the present invention relates to a space dividing device for selectively receiving a light beam from a specific light source among a plurality of light sources arranged in space, and a light receiving device using the space dividing device.
  • optical communication in free space (hereinafter simply referred to as “optical communication”) is performed between a plurality of communication devices, light beams other than the communication partner become noise. Therefore, it is necessary to efficiently remove optical signals other than the communication partner. In addition, the same applies to the case where there is light above the band outside the allowable range of the communication device.
  • the invention according to Patent Document 1 is a device for reflecting a light beam toward a light receiving element by using a micro mirror array unit in which a plurality of mirrors are arranged, and controlling each mirror individually enables the other device It is merely possible to provide a number of focusing mirrors corresponding to the number of the lenses, or to make it possible to change the curvature of the focusing mirror in accordance with the distance to the other device. That is, the invention according to Patent Document 1 can not selectively receive any light beam from a specific light source on the premise that all light beams projected to the micro mirror array unit are sent to the light receiving element.
  • Patent Document 2 has a function of arbitrarily selecting a light beam to be introduced into the light receiver from a plurality of light beams, a shutter for blocking the light beam is provided to provide the function. There is still room to reduce the number of parts.
  • a first invention of the present application is a space dividing device provided in front of a light receiver, comprising a group of mirrors arranged in a plane space and capable of arbitrarily changing the reflection angle, to the group described above It is possible to switch the presence or absence of introduction to a light receiver by controlling the reflection angle of the mirror with respect to a plurality of incident light beams, and provide a space division device.
  • a second invention of the present application is a light receiving device capable of receiving a light beam from a light source in optical communication, comprising at least a beam splitter, the space dividing device according to the first invention, and a light receiver.
  • the beam splitter guides the light beam from the light source to the space dividing device, and the space dividing device controls the reflection angle of the mirror to select any light beam from a plurality of light beams incident on the space dividing device.
  • a light receiving device characterized in that only the light beam is selected to be reflected to the beam splitter and the light beam is reflected to the beam splitter, and the beam splitter guides the reflected light beam to the light receiver. It is A third invention of the present application is the light receiving device according to the second invention, wherein a plurality of the light receivers are provided, and a spectral device is provided in front of each light receiver to make the light beams different in wavelength.
  • the present invention provides a light receiving device characterized in that light is received by each light receiver while being dispersed.
  • optical communication can be performed between arbitrary communication devices among a plurality of communication devices existing in the space.
  • the light receiving device A of the present invention is a device incorporated as a mechanism on the receiving side in a communication device for performing optical communication. Therefore, when the communication apparatus transmits and receives optical communication, the apparatus comprises at least the light receiving device A of the present invention and the light source B for emitting light to the other communication devices. On the other hand, when the communication apparatus has the function only on the reception side of the optical communication, the light source B may be removed and only the light receiving apparatus A may be provided.
  • FIG. 1 shows the configuration of a light receiving device A of the present invention.
  • the light receiving device A of the present invention comprises at least a beam splitter 1, a space dividing device 2, and a light receiver 3.
  • a lens 4 for converging the light beam may be disposed in front of the beam splitter 1 as appropriate.
  • Well-known members can be used for the beam splitter 1, the light receiver 3 and the lens 4, and thus the detailed description is omitted.
  • the space splitting device 2 is a device for guiding an arbitrary light beam among the plurality of incident light beams to the beam splitter 1.
  • the arbitrary light beam is intended to include both single and plural light beams.
  • the space dividing device 2 is composed of an assembly of a plurality of mirrors 21 arranged on a plane.
  • the arrangement mode of the mirrors 21 is not limited to the lattice, and a known arrangement mode can be used.
  • the mirrors 21 are configured to be able to change the angle arbitrarily. By changing the angle of the mirror 21, the reflection direction of the light beam can be controlled.
  • DMD Digital Micromirror Device
  • a galvano mirror or the like can be used as the space dividing device 2.
  • FIG. 1 shows a state in which four light receiving devices A of the present invention and four light sources B1 to B4 on the transmission side of the other communication devices exist in free space.
  • the light beams from the light sources B1 to B4 are directed onto the projection plane of the space dividing device 2 through the lens 4 and the beam splitter 1, and as shown in FIG.
  • Light spots C1 to C4 are present.
  • the beam splitter 1 adjusts the reflection angle only for the mirror ("mirror 22 to be controlled") at the position of the light point by the light source.
  • the angle of the mirror 21 of the portion where light rays from other light sources B are projected may be controlled so as not to be sent to the light receiver 3. By performing such control, it is possible to guide only the light beam of an arbitrary light source B among the plurality of light sources B to the light receiver 3.
  • the mirror 22 at the position of the light point C4 is also controlled to reflect on the beam splitter
  • a spectroscope such as a wavelength selection plate (dichroic mirror) or the like is provided in front of the light receiver 3 and configured to split each light beam to different light receivers 3 by the light reflector. You can also.
  • the spectroscopic device other known devices can be used as long as the wavelength can be selected, and a diffraction grating, a prism or the like can be used. With such a configuration, light of different wavelengths (such as red, green, blue, ultraviolet light, infrared light, etc.) can be emitted from a plurality of light sources, and those lights can be simultaneously selected and received.
  • a diffraction grating, a prism or the like can be used.
  • light of different wavelengths such as red, green, blue, ultraviolet light, infrared light, etc.
  • a light receiving device B light source C light spot 1 beam splitter 2 space dividing device 21 mirror 22 mirror to be controlled 3 light receiver 4 lens

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

Le problème décrit par la présente invention est de rendre possible la réception de manière sélective d'un faisceau de lumière défini arbitrairement parmi des faisceaux de lumière provenant d'une pluralité de sources de lumière en communication optique dans un espace libre. La solution selon l'invention porte sur un appareil de réception de lumière qui est pourvu au moins d'un séparateur de faisceau, d'un dispositif de séparation d'espace et d'un récepteur de lumière. Le dispositif de séparation d'espace est constitué d'un ensemble de miroirs qui sont disposés dans un espace plan et présentant chacun un angle de réflexion variable arbitrairement, et sont configurés pour permettre d'introduire de manière sélective uniquement un faisceau de lumière défini arbitrairement parmi une pluralité de faisceaux de lumière incidents sur l'ensemble dans le récepteur de lumière en réglant les angles de réflexion des miroirs.
PCT/JP2013/001955 2013-03-22 2013-03-22 Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace WO2014147666A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/001955 WO2014147666A1 (fr) 2013-03-22 2013-03-22 Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/001955 WO2014147666A1 (fr) 2013-03-22 2013-03-22 Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace

Publications (1)

Publication Number Publication Date
WO2014147666A1 true WO2014147666A1 (fr) 2014-09-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/001955 WO2014147666A1 (fr) 2013-03-22 2013-03-22 Dispositif de séparation d'espace et appareil de réception de lumière utilisant le dispositif de séparation d'espace

Country Status (1)

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WO (1) WO2014147666A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022180333A1 (fr) * 2021-02-26 2022-09-01 Omninov Point d'accès de communication par la lumière, et procédés utilisant ce point d'accès

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004015491A (ja) * 2002-06-07 2004-01-15 Canon Inc 光空間伝送装置および光空間伝送システム
JP2004212209A (ja) * 2002-12-27 2004-07-29 Olympus Corp 角度検出装置、光信号スイッチシステムおよび情報記録再生システム
JP2005181580A (ja) * 2003-12-18 2005-07-07 Olympus Corp 光スイッチ装置とそのキャリブレーション方法
JP2009047917A (ja) * 2007-08-20 2009-03-05 Fujitsu Ltd 光波長選択スイッチおよび制御方法
JP2012220843A (ja) * 2011-04-12 2012-11-12 National Institute Of Advanced Industrial & Technology 光パフォーマンスモニタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004015491A (ja) * 2002-06-07 2004-01-15 Canon Inc 光空間伝送装置および光空間伝送システム
JP2004212209A (ja) * 2002-12-27 2004-07-29 Olympus Corp 角度検出装置、光信号スイッチシステムおよび情報記録再生システム
JP2005181580A (ja) * 2003-12-18 2005-07-07 Olympus Corp 光スイッチ装置とそのキャリブレーション方法
JP2009047917A (ja) * 2007-08-20 2009-03-05 Fujitsu Ltd 光波長選択スイッチおよび制御方法
JP2012220843A (ja) * 2011-04-12 2012-11-12 National Institute Of Advanced Industrial & Technology 光パフォーマンスモニタ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022180333A1 (fr) * 2021-02-26 2022-09-01 Omninov Point d'accès de communication par la lumière, et procédés utilisant ce point d'accès
FR3120280A1 (fr) * 2021-02-26 2022-09-02 Omninov Point d’accès de communication par la lumière, et procédés utilisant ce point d’accès

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