GB2350509A - Optical free space signalling system - Google Patents

Optical free space signalling system

Info

Publication number
GB2350509A
GB2350509A GB0022990A GB0022990A GB2350509A GB 2350509 A GB2350509 A GB 2350509A GB 0022990 A GB0022990 A GB 0022990A GB 0022990 A GB0022990 A GB 0022990A GB 2350509 A GB2350509 A GB 2350509A
Authority
GB
United Kingdom
Prior art keywords
light
lens system
signalling
free space
signalling system
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0022990A
Other versions
GB2350509B (en
GB0022990D0 (en
Inventor
Alan Edward Green
Euan Morrison
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scientific Generics Ltd
Original Assignee
Scientific Generics Ltd
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 Scientific Generics Ltd filed Critical Scientific Generics Ltd
Publication of GB0022990D0 publication Critical patent/GB0022990D0/en
Publication of GB2350509A publication Critical patent/GB2350509A/en
Application granted granted Critical
Publication of GB2350509B publication Critical patent/GB2350509B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2587—Arrangements specific to fibre transmission using a single light source for multiple stations
    • 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
    • H04B10/112—Line-of-sight transmission over an extended range
    • H04B10/1123—Bidirectional transmission
    • 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
    • H04B10/112—Line-of-sight transmission over an extended range
    • H04B10/1123—Bidirectional transmission
    • H04B10/1125—Bidirectional transmission using a single common optical path
    • 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
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1149—Arrangements for indoor wireless networking of information

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)

Abstract

A signalling system is provided which comprises first and second signalling devices. The first signalling device comprises (i) a plurality of light emitters each for emitting a respective light beam carrying information; and (ii) a lens system for collecting light emitted from the plurality of light emitters and for directing the light beams in respective directions within the field of view of the lens system. The second signalling device comprises (i) a lens system for collecting light emitted from a light emitter of the first signalling device; (ii) a light detector for receiving the collected light from the lens system and for convening the received light into corresponding electrical signals; and (iii) means for processing the electrical signals from the light detector to retrieve the information.
GB0022990A 1999-02-11 2000-02-11 Optical free space signalling system Expired - Fee Related GB2350509B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9903142A GB9903142D0 (en) 1999-02-11 1999-02-11 Free space optical communication system
PCT/GB2000/000456 WO2000048338A1 (en) 1999-02-11 2000-02-11 Optical free space signalling system

Publications (3)

Publication Number Publication Date
GB0022990D0 GB0022990D0 (en) 2000-11-01
GB2350509A true GB2350509A (en) 2000-11-29
GB2350509B GB2350509B (en) 2001-09-12

Family

ID=10847589

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9903142A Ceased GB9903142D0 (en) 1997-02-11 1999-02-11 Free space optical communication system
GB0022990A Expired - Fee Related GB2350509B (en) 1999-02-11 2000-02-11 Optical free space signalling system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9903142A Ceased GB9903142D0 (en) 1997-02-11 1999-02-11 Free space optical communication system

Country Status (7)

Country Link
JP (1) JP2003534671A (en)
CN (1) CN1346553A (en)
AU (1) AU2452800A (en)
CA (1) CA2372269A1 (en)
GB (2) GB9903142D0 (en)
HK (1) HK1033619A1 (en)
WO (1) WO2000048338A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045981A2 (en) 1999-12-22 2001-06-28 Quantumbeam Limited Optical free space signalling system
RU2172560C1 (en) 2000-06-08 2001-08-20 Васильев Владимир Павлович Optical communication facility
GB0025463D0 (en) 2000-10-17 2000-11-29 Isis Innovation Improvements in or relating to optical wireless communications
US6522437B2 (en) * 2001-02-15 2003-02-18 Harris Corporation Agile multi-beam free-space optical communication apparatus
RU2212763C2 (en) 2001-08-16 2003-09-20 Общество с ограниченной ответственностью "Подсолнечник Технологии" Open optical communication system
WO2003075493A2 (en) * 2002-03-05 2003-09-12 Scientific Generics Ltd. Optical free-space signalling system
JP2009177654A (en) * 2008-01-28 2009-08-06 National Institute Of Information & Communication Technology Spatial optical communication device and method thereof
CA2677585C (en) * 2009-09-03 2018-05-15 Penguin Automated Systems Inc. Optical communication device, system and method
US9225140B2 (en) * 2011-06-13 2015-12-29 Wi-Charge Ltd. Spatially distributed laser resonator
JP5967643B2 (en) * 2012-03-30 2016-08-10 株式会社アウトスタンディングテクノロジー Underwater divergent light communication device
DE102012011789A1 (en) * 2012-06-15 2013-08-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Free-space communication terminal for mobile optical free-beam communication, has lens fixedly connected to terminal, which comprises viewing area, with azimuth angular range and elevation angle range of predetermined degrees
CN105359431B (en) * 2013-07-01 2017-11-28 诺基亚技术有限公司 Orient optic communication
JP2017510126A (en) * 2014-01-10 2017-04-06 パルマー ラボ，エルエルシー Divergent beam communication system
CN103705222A (en) * 2014-01-17 2014-04-09 上海理工大学 Tissue water content real-time measuring device based on electrocoagulation closer
JP6410308B2 (en) 2014-12-12 2018-10-24 国立大学法人東北大学 Sensor chip, detection system, and detection method
RU2617207C1 (en) * 2016-02-24 2017-04-24 Ольга Олеговна Матросова Method of subscriber access to data network
CN108020846A (en) * 2018-01-15 2018-05-11 上海兰宝传感科技股份有限公司 A kind of the sensor obstacle avoidance system and method in detectable barrier orientation
WO2024043058A1 (en) * 2022-08-25 2024-02-29 京セラ株式会社 Optical communication system, terminal device, and base station device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196809A (en) * 1986-10-23 1988-05-05 Plessey Co Plc Optical communication system
GB2221810A (en) * 1988-07-08 1990-02-14 Univ London Optical transmission arrangement
US5777768A (en) * 1995-09-01 1998-07-07 Astroterra Corporation Multiple transmitter laser link
US5822099A (en) * 1995-08-31 1998-10-13 Sony Corporation Light communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702634C2 (en) * 1997-01-25 2003-02-20 Leuze Electronic Gmbh & Co Arrangement of data light barriers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196809A (en) * 1986-10-23 1988-05-05 Plessey Co Plc Optical communication system
GB2221810A (en) * 1988-07-08 1990-02-14 Univ London Optical transmission arrangement
US5822099A (en) * 1995-08-31 1998-10-13 Sony Corporation Light communication system
US5777768A (en) * 1995-09-01 1998-07-07 Astroterra Corporation Multiple transmitter laser link

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE 197 02 634 A 30/7/98 *

Also Published As

Publication number Publication date
GB2350509B (en) 2001-09-12
WO2000048338A9 (en) 2001-11-01
WO2000048338A1 (en) 2000-08-17
GB0022990D0 (en) 2000-11-01
CN1346553A (en) 2002-04-24
JP2003534671A (en) 2003-11-18
CA2372269A1 (en) 2000-08-17
HK1033619A1 (en) 2001-09-07
GB9903142D0 (en) 1999-04-07
AU2452800A (en) 2000-08-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050209