US3585705A - Method of forming light guides - Google Patents

Method of forming light guides Download PDF

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Publication number
US3585705A
US3585705A US801269A US3585705DA US3585705A US 3585705 A US3585705 A US 3585705A US 801269 A US801269 A US 801269A US 3585705D A US3585705D A US 3585705DA US 3585705 A US3585705 A US 3585705A
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US
United States
Prior art keywords
filament
bundle
former
winding
guide
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 - Lifetime
Application number
US801269A
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English (en)
Inventor
William B Allan
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
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Publication of US3585705A publication Critical patent/US3585705A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/10—Non-chemical treatment
    • C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49801—Shaping fiber or fibered material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material

Definitions

  • This invention relates to a method of forming light guides each consisting, as is well known, of a compact bundle of filaments of light transmitting material, and relates to light guides formed according to the method.
  • the invention is particularly adapted to the production of Y guides, but can also be used for the production of multitail guides and indeed single guides which, in length, may
  • the invention provides a method of forming a light guide made up of a compact bundle of light transmitting filaments, comprising winding a continuous filament of light transmitting material into a former, effecting relative movement between the former and a guide means which holds the filament as it is wound onto the former, said relative movement being in a direction transverse to the direction of movement of the filament through the guide means, so that the filament is laid repeatedly over the same endless loop on the former to form an endless bundle of filament loops, with at least one crossing point, and severing the bundle to form the light guide.
  • the relation between the speeds of the rotary and traverse movements are so adjusted as to result in a figure of eight winding or a successiveion of such figures extending circumferentially around the surface of the former.
  • the filament can be wound as an open reentrant helix.
  • the winding is first carried out as a figure of eight Winding and the resultant bundle is thereafter severed at'the cross over position.
  • FIG. 1 diagrammatically illustrates a Y type of guide as made under existing conditions
  • FIG. 2 is a similar view of the same type of guide made in accordance with the present invention.
  • FIGS. 3 to 6 illustrate respectively individual examples of the formation of guides all lying within the present invention.
  • FIG. 1 two separate bundles of filaments 10 and 11 are joined together into Y formation to be present and to terminate in a common end face 12; but owing to the separate formation of the bundles the filaments from the two bundles are not uniformly distributed over the end face but are, to all intents and purposes, divided into two groups each covering approximately half the total area of that face. This is indicated by shaded and unshaded portions shown in, the end face.
  • the two bundles are more or less uniformly distributed and intermingled over substantially the entire end face as indicated in FIG. 2.
  • a single filament is Wound on to a cylindrical former 13, FIG. 3, which latter is rotated about its axis 14 and at the same time a guide through which the filament is fed to the former is continuously traversed back and forth axially of the former, the relation between the speeds of rotation and traverse being so chosen and adjusted that a figure of eight winding results.
  • the bundle can be severed along the line XX thereby providing a junction terminating in an end face with a filament distribution similar to that shown in FIG. 2.
  • the bundle will also be severed at Z-Z in two places.
  • the winding could be carried out to provide the formation shown in FIG. 4 which, when the bundles are severed at X-X and also in similar positions to those marked Z--Z in FIG. 3 several Y guides can be formed all at the same time.
  • the invention also lends itself to the formation of multi-tailed guides. For instance if the cut is made at XX in FIG. 4 and the ends on one side only of the cut are freed, a guide with five tails would result. This arrangement of winding can be modified to suit the number of tails required.
  • FIG. 5 A still further method is indicated in FIG. 5 where the relative rotational and traverse speeds are adjusted to form a succession of cross over positions peripherally spaced around the surface of the former.
  • FIG. 6 Another method of forming a single relatively long guide is indicated in FIG. 6 in which the filament is wound as an open reentrant helix which can be severed at AA and the end thus provided carefully pulledout from the successive coils of the helix.
  • the junction can be reinforced by binding or any other preferred means in order to assure that one bundle of filaments shall not be easily pulled out from the other bundle. This may be necessary owing to the relatively short junction provided at the crossover position. Alternatively, provision can be made, prior to the commencement of winding, for positioning a binding strip to be subsequently tightened before actually severing the bundle.
  • the circumferential length of the cross over portion can be extended so that after severence a sufiicient length of the stem part of the Y remains and will be self supporting without the need for reinforcement.
  • a method of forming a light guide made up of a compact bundle of light transmitting filaments comprising the steps of:
  • the method according to claim 1 including the step of arranging for the relative movement and the speed of winding of the filament to be such that there is a crossing 1 point where a multiplicity of reaches of the endless bun dle of filament loops meet.
  • a method including the steps of arranging for the speed of rotation and the rate of winding the filament to be such that the endless bundle of filament loops takes up the form of a helix on the former with an axially extending reach joining the ends of the helix and forming crossing points with the coils, severing the bundle at a point on said reach which is displaced from the crossing points, and drawing one severed end carefully through crossing points to form a single light guide.
  • a method according to any preceding claim including the steps of rotating the former and moving the guide means transverse to the direction in which the filament moves through the guide means, to provide the combined winding and laying movements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Secondary Cells (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
US801269A 1968-02-28 1969-02-24 Method of forming light guides Expired - Lifetime US3585705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9585/68A GB1208472A (en) 1968-02-28 1968-02-28 Light guides

Publications (1)

Publication Number Publication Date
US3585705A true US3585705A (en) 1971-06-22

Family

ID=9874844

Family Applications (1)

Application Number Title Priority Date Filing Date
US801269A Expired - Lifetime US3585705A (en) 1968-02-28 1969-02-24 Method of forming light guides

Country Status (5)

Country Link
US (1) US3585705A (de)
CS (1) CS150242B2 (de)
DE (1) DE1910011A1 (de)
FR (1) FR2002821A1 (de)
GB (1) GB1208472A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807025A (en) * 1973-03-09 1974-04-30 Artos Engineering Co Method for making indicia bearing light conductors
US3954546A (en) * 1973-09-06 1976-05-04 Jenaer Glaswerk Schott & Gen. Apparatus for the manufacture of optical-fiber bundles
US4116739A (en) * 1976-11-26 1978-09-26 New York Institute Of Technology Method of forming an optical fiber device
US4332439A (en) * 1978-07-27 1982-06-01 Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.V. Method of producing a light conductor
US4439221A (en) * 1979-11-01 1984-03-27 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Method for making optical fiber couplers
US4505588A (en) * 1983-02-09 1985-03-19 Ludman Jacques E Fiber stellar interferometer
US4539651A (en) * 1983-02-09 1985-09-03 Ludman Jacques E Optical correlator
US4558951A (en) * 1983-02-09 1985-12-17 Ludman Jacques E Fiber fourier spectrometer
US4579419A (en) * 1983-09-29 1986-04-01 Vicon Fiber Optics Corp. Fiber optic connector and apparatus and method employing same
US4630652A (en) * 1985-07-01 1986-12-23 Dieterich Frank L Method for forming a flat band of parallel, contiguous strands
US4929048A (en) * 1988-11-10 1990-05-29 Fiberview Corporation Fiber optic display
US20140131505A1 (en) * 2012-11-12 2014-05-15 Southwire Company Wire and Cable Package

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807025A (en) * 1973-03-09 1974-04-30 Artos Engineering Co Method for making indicia bearing light conductors
US3954546A (en) * 1973-09-06 1976-05-04 Jenaer Glaswerk Schott & Gen. Apparatus for the manufacture of optical-fiber bundles
US4116739A (en) * 1976-11-26 1978-09-26 New York Institute Of Technology Method of forming an optical fiber device
US4332439A (en) * 1978-07-27 1982-06-01 Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.V. Method of producing a light conductor
US4439221A (en) * 1979-11-01 1984-03-27 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Method for making optical fiber couplers
US4505588A (en) * 1983-02-09 1985-03-19 Ludman Jacques E Fiber stellar interferometer
US4539651A (en) * 1983-02-09 1985-09-03 Ludman Jacques E Optical correlator
US4558951A (en) * 1983-02-09 1985-12-17 Ludman Jacques E Fiber fourier spectrometer
US4579419A (en) * 1983-09-29 1986-04-01 Vicon Fiber Optics Corp. Fiber optic connector and apparatus and method employing same
US4630652A (en) * 1985-07-01 1986-12-23 Dieterich Frank L Method for forming a flat band of parallel, contiguous strands
US4929048A (en) * 1988-11-10 1990-05-29 Fiberview Corporation Fiber optic display
US20140131505A1 (en) * 2012-11-12 2014-05-15 Southwire Company Wire and Cable Package
US11117737B2 (en) * 2012-11-12 2021-09-14 Southwire Company, Llc Wire and cable package
US11858719B2 (en) 2012-11-12 2024-01-02 Southwire Company, Llc Wire and cable package

Also Published As

Publication number Publication date
CS150242B2 (de) 1973-09-04
FR2002821A1 (de) 1969-10-31
DE1910011A1 (de) 1969-09-11
GB1208472A (en) 1970-10-14

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