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EP3593040A1 - Guide de lumière et procédé de détection d'un guide de lumière à trop forte courbure - Google Patents

Guide de lumière et procédé de détection d'un guide de lumière à trop forte courbure

Info

Publication number
EP3593040A1
EP3593040A1 EP18714433.2A EP18714433A EP3593040A1 EP 3593040 A1 EP3593040 A1 EP 3593040A1 EP 18714433 A EP18714433 A EP 18714433A EP 3593040 A1 EP3593040 A1 EP 3593040A1
Authority
EP
European Patent Office
Prior art keywords
light
light guide
mass
coating
dye
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.)
Ceased
Application number
EP18714433.2A
Other languages
German (de)
English (en)
Inventor
Robert Hanf
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.)
J Fiber GmbH
Original Assignee
Leoni Kabel GmbH
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 Leoni Kabel GmbH filed Critical Leoni Kabel GmbH
Publication of EP3593040A1 publication Critical patent/EP3593040A1/fr
Ceased legal-status Critical Current

Links

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
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0003—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being doped with fluorescent agents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/08—Testing mechanical properties
    • G01M11/088—Testing mechanical properties of optical fibres; Mechanical features associated with the optical testing of optical fibres
    • 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
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
    • 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
    • G02B6/02395—Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture

Definitions

  • the invention relates to a light guide, in particular optical waveguide, with a coating, wherein the light guide is designed to be flexible, so that an adaptable laying of the light guide can be realized and a method for detecting a too curved optical waveguide.
  • Fiber optic cables which are also called fiber optic cables, fiber optic or fiber optic elements, are often used to transmit data or light.
  • a fiber-optic core for example of glass or plastic, which has a coating and which is additionally sheathed.
  • this light guide light is coupled. Not only is visible light (380 nm to 780 nm) used, but also underlying or overlying wavelengths are used. The injected light is usually carried out due to the total reflection by the light guide and decoupled at the end again.
  • the object of the invention is to improve the state of the art.
  • the object is achieved by a light guide, in particular light waveguide, with a coating, wherein the light guide is flexible, so that an adaptable laying of the light guide can be realized, wherein the coating has a Lichtfrequenztakestoff, so that at a coupled into the light guide UV radiation Light or coupled-in IR light and an over-arc light guide at a bending point visible light emerges from the light guide.
  • optical fiber refers to transparent components such as fibers, tubes or rods that transport light over short or long distances, whereby the light pipe is reflected by the interface of the optical fiber either achieved by total reflection due to a lower refractive index of the medium surrounding the optical fibers or by mirroring of the interface.
  • optical waveguides are used in telecommunications so-called optical waveguides. These optical waveguides or corresponding optical fibers often consist of glass fiber and are therefore also referred to as fiber optic cables or fiber optic cables.
  • fiber optic sensors for imaging and illumination purposes, such as in endoscopes, for the flexible transport of laser beams, as well as in lighting installations or for decoration.
  • the fibers can also be made of plastic, as well as polymeric optical fibers and thus comprise polymeric optical fibers.
  • the term "light guide" includes single-mode fiber and multi-mode fiber.
  • the glass fiber core may also have an additional cladding, which usually has a slightly lower refractive index than the actual core. Thus, the total reflection can occur at a boundary layer between the core and this cladding. In the present case, this coating can already form the “coating.” In addition, a further coating can be provided, which is designed in particular as a protective coating The scouring coating is often called “Coting” or “Buffer.” Often such cotings are applied to the fiber in liquid form and then, for example Hardened by UV light and thus imprinted on the fiber.
  • a "flexible" light guide is understood to mean, in particular, a bendable light guide, so that it can be applied, for example, to a roll and can be correspondingly unwound.Flexible thus means that its shape can be changed with respect to the longitudinal orientation Destruction of the functionality of the light guide possible.
  • laying is also possible: When laying a fiber optic cable, it is laid, for example, in a wall or in pipes and rails, and sometimes also aligned over "corners". In most cases, after laying a light guide, the light guide itself should not be visible.
  • a "light-frequency change substance” is a substance that changes the wavelength of an absorbed light, for example converting high-energy UV light into lower-energy (visible) light using a fluorescent dye Light energy converted into vibrational energy of a Rhodaminmolekühles.
  • a "bending point" is, in particular, the location of a light guide in which at least part of the coupled light emerges due to mechanical diffraction of the light guide This can be done in particular by the fact that the conditions of the total reflections in the interior of the light guide due to the strong mechanical bending are no longer given.
  • An essence of the invention is thus based on the fact that light, which is invisible to the human eye, interacts with a light-frequency change substance when the conditions of the total reflection no longer exist. Since in these cases the exiting light is passed through the coating, it can interact there with the light-frequency conversion material, whereby subsequently visible light escapes to the human eye.
  • Light frequency conversion material has a concentration of less than 5, 0% by mass or less than 2.0% by mass or less than 1.2% by mass or less than 0.8% by mass or less than 0.4% by mass or less than 0.2% by mass and greater than 0.1 mass% based on a total mass of the coating. It is rough that the higher the light output of a Lichtfrequenztakestoffs is the lower its concentration can be. For example, rhodamine 6G gave excellent results at a concentration of 0.4% by mass.
  • the light-frequency conversion material can be added to the coating both as a particle which is not soluble in the coating or as a releasable substance. It has turned out to be particularly simple that in a liquid phase of the coating, the light frequency change substance is mixed homogeneously and then the mixture is sprayed onto the core of the light guide and then cured.
  • the light frequency conversion material can be designed in such a way that the light-frequency converter generates a low-frequency light from a higher-frequency light. This is ensured in particular with fluorescent dyes.
  • fluorescent dyes Such substances can be used, in particular, when UV light is conducted, for example, in a range between 200 nm and 380 nm in the light guide. Fluorescent dyes are therefore used as the light-frequency conversion substance in this case in particular.
  • the light frequency modifier is a coumarin dye, a cyanine dye, a flavin dye, a luciferin dye, a phycobilin dye, a rhodamine dye, and / or a safranine dye.
  • the Lichtfrequenztakestoff may be selected such that the Lichtfrequenztakestoff from a low-frequency light generates a higher-frequency light.
  • This is particularly due to the effect that two photons, for example, each with 1,000 nm, a new photon at twice the frequency (corresponding to half wavelength) generated.
  • This effect is also referred to as "up-conversion" in English, for example, urea can be used as the light-frequency converter.
  • the optical fiber may have a sheath. Frequently this is a plastic such as polyimide, acrylic or silicone.
  • the sheath is made transparent. This can be realized for example by a transparent silicone.
  • the object is further achieved by a method for detecting an excessively curved optical waveguide, wherein a previously described optical waveguide is used, with the following steps:
  • Figure 1 is a schematic representation of a curved glass fiber in which emerges at a bend visual light
  • a glass fiber 101 has a fiber core 103, a coating 105, and a transparent fiber clad 109 made of silicone.
  • the fiber core 103 is made of glass.
  • the coating 105 has, in a first alternative, 0.4% by mass rhodamine 6G. Prior to the manufacturing process, the rhodamine 6G was accordingly supplied to the later coating agent in the liquid state and mixed therewith. The concentration refers to the coating in the liquid state.
  • the coating agent with the dissolved rhodamine 6G is sprayed onto the fiber core 103 and cured by means of UV light. Subsequently, the sheath with the fiber cladding 109 takes place. Thus, 105 rhodamine 6G particles 107 are arranged in the coating.
  • the glass fiber 101 is curved in accordance with a bending radius 131.
  • a light source 121 which is an LED and which emits UV light 123, is arranged on a fiber input 106.
  • the UV light 123 emitted by the light source 121 is coupled into the fiber core 103 and, due to a total reflection at the boundary layer between the fiber core 103 and the coating 105, is directed towards the fiber exit 104 by means of total reflection.
  • rhodamine 6G urea instead of rhodamine 6G urea is used.
  • concentration of urea is 2.4% by mass.
  • infrared light 123 having a wavelength of 1050 nm is coupled into the glass fiber 101.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

L'invention concerne un guide de lumière, en particulier un guide d'ondes optiques, pourvu d'un revêtement, le guide de lumière étant conçu de manière flexible de façon à permettre d'adapter la pose du guide de lumière. Le revêtement présente une substance faisant varier la fréquence de la lumière, de sorte que, lorsqu'une lumière UV ou IR est injectée dans le guide de lumière et lorsqu'un guide de lumière présente une trop forte courbure, une lumière visible sort du guide de lumière dans une zone courbée.
EP18714433.2A 2017-03-06 2018-02-23 Guide de lumière et procédé de détection d'un guide de lumière à trop forte courbure Ceased EP3593040A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017104628.3A DE102017104628B4 (de) 2017-03-06 2017-03-06 Lichtleiter und Verfahren zum Erkennen eines zu stark gekrümmten Lichtleiters
PCT/DE2018/200013 WO2018162012A1 (fr) 2017-03-06 2018-02-23 Guide de lumière et procédé de détection d'un guide de lumière à trop forte courbure

Publications (1)

Publication Number Publication Date
EP3593040A1 true EP3593040A1 (fr) 2020-01-15

Family

ID=61832233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18714433.2A Ceased EP3593040A1 (fr) 2017-03-06 2018-02-23 Guide de lumière et procédé de détection d'un guide de lumière à trop forte courbure

Country Status (5)

Country Link
US (1) US11029460B2 (fr)
EP (1) EP3593040A1 (fr)
CN (1) CN110366658A (fr)
DE (1) DE102017104628B4 (fr)
WO (1) WO2018162012A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100066254A1 (en) * 2006-12-22 2010-03-18 Hubert Ott Light-Emitting Device
WO2013012986A1 (fr) * 2011-07-19 2013-01-24 Brown Joe D Procédé et appareil permettant de différencier les rayons émis par des zones cibles des rayons émis par des zones non cibles durant des interventions de chirurgie laser
US20140160392A1 (en) * 2012-12-12 2014-06-12 Shenzhen China Star Optoelectronics Technology Co. Ltd. Optical fiber for backlight module, backlight module and liquid crystal display device
US20160187608A1 (en) * 2014-07-28 2016-06-30 Joe Denton Brown Optical fiber that provides an indication that breakage is imminent, and method of manufacturing such as fiber

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US4883054A (en) * 1987-12-09 1989-11-28 Fuller Research Corporation Optical fiber break detector
JPH03276133A (ja) * 1990-03-27 1991-12-06 Omron Corp 波長変換素子
IL97362A0 (en) * 1991-02-26 1992-08-18 Aaron Lewis Method for external excitation of subwavelength light sources that is integrated into feedback methodologies
US5729335A (en) 1996-08-23 1998-03-17 Mcdonnell Douglas Corporation Optical fiber monitoring apparatus and an associated method for monitoring bending or strain on an optical fiber during installation
JP4211410B2 (ja) 2002-04-18 2009-01-21 東ソー株式会社 シラン架橋発泡性ポリオレフィン樹脂組成物及び架橋発泡体
JP2004012679A (ja) * 2002-06-05 2004-01-15 Fujikura Ltd 視認性細径光ファイバ素線
US8044110B2 (en) * 2003-05-29 2011-10-25 Prysmian Cavi E Sistemi Energia S.R.L. Optical fiber with polymeric coating crosslinked in the presence of both radical and cationic photoinitiators
US8331750B2 (en) 2010-02-01 2012-12-11 Enlighting Inc Optical fibers having a surface light field emulation (s-LiFE) segment and method of making the same
US9217826B2 (en) * 2011-10-11 2015-12-22 Corning Incorporated Multi-wavelength light source using light diffusing fibers
US20140363134A1 (en) 2013-06-10 2014-12-11 Corning Optical Communications LLC Optical fiber cable assembly comprising optical tracer fiber
CN105278157B (zh) * 2014-06-27 2020-04-28 富士胶片株式会社 背光单元及液晶显示装置
JP5728614B1 (ja) * 2014-09-24 2015-06-03 株式会社石原産業 光カプラ及びその光カプラを利用した光の分岐方法
US10101517B2 (en) * 2015-02-18 2018-10-16 Corning Incorporated Optical fiber illumination systems and methods
US10539747B2 (en) * 2017-12-05 2020-01-21 Corning Research & Development Corporation Bend induced light scattering fiber and cable assemblies and method of making

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100066254A1 (en) * 2006-12-22 2010-03-18 Hubert Ott Light-Emitting Device
WO2013012986A1 (fr) * 2011-07-19 2013-01-24 Brown Joe D Procédé et appareil permettant de différencier les rayons émis par des zones cibles des rayons émis par des zones non cibles durant des interventions de chirurgie laser
US20140160392A1 (en) * 2012-12-12 2014-06-12 Shenzhen China Star Optoelectronics Technology Co. Ltd. Optical fiber for backlight module, backlight module and liquid crystal display device
US20160187608A1 (en) * 2014-07-28 2016-06-30 Joe Denton Brown Optical fiber that provides an indication that breakage is imminent, and method of manufacturing such as fiber

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JUI-TENG LIN: "Progress of medical lasers: Fundamentals and Applications", MEDICAL DEVICES AND DIAGNOSTIC ENGINEERING, vol. 1, no. 2, 1 January 2016 (2016-01-01), XP055736109, DOI: 10.15761/MDDE.1000111 *
See also references of WO2018162012A1 *

Also Published As

Publication number Publication date
WO2018162012A1 (fr) 2018-09-13
CN110366658A (zh) 2019-10-22
US11029460B2 (en) 2021-06-08
US20200064530A1 (en) 2020-02-27
DE102017104628A1 (de) 2018-09-06
DE102017104628B4 (de) 2023-06-22

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