GB1392437A - Indicator arrangements - Google Patents

Indicator arrangements

Info

Publication number
GB1392437A
GB1392437A GB3186371A GB3186371A GB1392437A GB 1392437 A GB1392437 A GB 1392437A GB 3186371 A GB3186371 A GB 3186371A GB 3186371 A GB3186371 A GB 3186371A GB 1392437 A GB1392437 A GB 1392437A
Authority
GB
United Kingdom
Prior art keywords
light guides
fibres
phosphor
guides
emitters
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.)
Expired
Application number
GB3186371A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3186371A priority Critical patent/GB1392437A/en
Publication of GB1392437A publication Critical patent/GB1392437A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

1392437 Matrix displays MARCONI CO Ltd 30 March 1972 [7 July 1971] 31863/71 Heading G5C An indicator arrangement includes a plurality of elongated light guides 1 at least a portion of the outer longitudinal surfaces of each guide being provided with a surface layer of phosphor, and means 2 for introducing exciting radiation into selectable ones of the light guides. The light guides may be fibres of glass or plastics material, may be in crossed array and woven to form a mesh, and ground at the cross over points 3, phosphor 4 being only at these regions. Phosphors may be lanthanum or barium fluoride doped with rare earths, and excitation sources of infra red GaAs emitters, at one or both ends of the guides. Fibres may be 1 mm. diameter, spaced four/cm. A map position indicator (Fig. 3, not shown), includes lead (7) activating emitters 2 to produce two crossing dotted lines.
GB3186371A 1971-07-07 1971-07-07 Indicator arrangements Expired GB1392437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3186371A GB1392437A (en) 1971-07-07 1971-07-07 Indicator arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3186371A GB1392437A (en) 1971-07-07 1971-07-07 Indicator arrangements

Publications (1)

Publication Number Publication Date
GB1392437A true GB1392437A (en) 1975-04-30

Family

ID=10329526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3186371A Expired GB1392437A (en) 1971-07-07 1971-07-07 Indicator arrangements

Country Status (1)

Country Link
GB (1) GB1392437A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417822A1 (en) * 1978-02-17 1979-09-14 Trigano Claude Polychromatic image display system - uses fine grid or array of optical fibres producing interference phenomena
WO1995006931A1 (en) * 1993-09-03 1995-03-09 Commissariat A L'energie Atomique Display device comprising means for converting a laser beam into visible, incoherent light
US20090322677A1 (en) * 2006-08-10 2009-12-31 Yeon-Keun Lee Light guide plate for system inputting coordinate contactlessly, a system comprising the same and a method for inputting coordinate contactlessly using the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417822A1 (en) * 1978-02-17 1979-09-14 Trigano Claude Polychromatic image display system - uses fine grid or array of optical fibres producing interference phenomena
WO1995006931A1 (en) * 1993-09-03 1995-03-09 Commissariat A L'energie Atomique Display device comprising means for converting a laser beam into visible, incoherent light
FR2709567A1 (en) * 1993-09-03 1995-03-10 Commissariat Energie Atomique Visualization device with conversion of laser beam into visible and inconsistent light.
US5606634A (en) * 1993-09-03 1997-02-25 Commissariat A L'energie Atomique Display unit for conversion of a laser beam into visible and incoherent light
US20090322677A1 (en) * 2006-08-10 2009-12-31 Yeon-Keun Lee Light guide plate for system inputting coordinate contactlessly, a system comprising the same and a method for inputting coordinate contactlessly using the same
US8754852B2 (en) * 2006-08-10 2014-06-17 Lg Chem, Ltd. Light guide plate for system inputting coordinate contactlessly, a system comprising the same and a method for inputting coordinate contactlessly using the same

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee