ES2090370T3 - Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion. - Google Patents

Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion.

Info

Publication number
ES2090370T3
ES2090370T3 ES92100832T ES92100832T ES2090370T3 ES 2090370 T3 ES2090370 T3 ES 2090370T3 ES 92100832 T ES92100832 T ES 92100832T ES 92100832 T ES92100832 T ES 92100832T ES 2090370 T3 ES2090370 T3 ES 2090370T3
Authority
ES
Spain
Prior art keywords
nucleus
openings
fiber optic
mode fiber
manufacturing procedure
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
ES92100832T
Other languages
English (en)
Spanish (es)
Inventor
George Edward Berkey
Robert Martin Hawk
Steven Howard Tarcza
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.)
Corning Inc
Original Assignee
Corning Inc
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 Corning Inc filed Critical Corning Inc
Application granted granted Critical
Publication of ES2090370T3 publication Critical patent/ES2090370T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C03B37/02754—Solid fibres drawn from hollow preforms
    • 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
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • C03B37/01217—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of polarisation-maintaining optical fibres
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/01228—Removal of preform material
    • C03B37/01231—Removal of preform material to form a longitudinal hole, e.g. by drilling
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/01228—Removal of preform material
    • C03B37/01234—Removal of preform material to form longitudinal grooves, e.g. by chamfering
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/01248—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing by collapsing without drawing
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
    • C03B37/01473—Collapsing
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
    • C03B37/01493—Deposition substrates, e.g. targets, mandrels, start rods or tubes
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C03B37/02709—Polarisation maintaining fibres, e.g. PM, PANDA, bi-refringent optical fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/02—Pure silica glass, e.g. pure fused quartz
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
    • C03B2203/302—Non-circular core cross-sections
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/08—Sub-atmospheric pressure applied, e.g. vacuum
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/12—Drawing solid optical fibre directly from a hollow preform

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
ES92100832T 1991-07-11 1992-01-20 Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion. Expired - Lifetime ES2090370T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/728,276 US5149349A (en) 1991-07-11 1991-07-11 Method of making polarization retaining fiber with an elliptical core, with collapsed apertures

Publications (1)

Publication Number Publication Date
ES2090370T3 true ES2090370T3 (es) 1996-10-16

Family

ID=24926167

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92100832T Expired - Lifetime ES2090370T3 (es) 1991-07-11 1992-01-20 Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion.

Country Status (9)

Country Link
US (1) US5149349A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0522229B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP3292889B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR100291888B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU648181B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2060016C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE69212922T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2090370T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
TW (1) TW226045B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307436A (en) * 1993-04-20 1994-04-26 Corning Incorporated Partially detached core optical waveguide
US5917109A (en) * 1994-12-20 1999-06-29 Corning Incorporated Method of making optical fiber having depressed index core region
CA2161939A1 (en) * 1994-12-20 1996-06-21 George E. Berkey Method of making optical fiber having depressed index core region
US5894537A (en) * 1996-01-11 1999-04-13 Corning Incorporated Dispersion managed optical waveguide
US20020069677A1 (en) * 1996-04-29 2002-06-13 Berkey George E. Optical fiber and method of making optical fiber
AU729455B2 (en) * 1996-06-17 2001-02-01 Corning Incorporated Method of making polarization retaining fiber
US6360565B1 (en) 1996-06-17 2002-03-26 Corning Incorporated Method of making polarization retaining fiber
US6587624B2 (en) 1996-06-17 2003-07-01 Corning Incorporated Polarization retaining fiber
CA2247970A1 (en) 1997-10-29 1999-04-29 Corning Incorporated Method of making segmented core optical waveguide preforms
KR20000002239A (ko) * 1998-06-18 2000-01-15 성재갑 살균 소취 세정제 조성물
US6778747B1 (en) 1998-09-09 2004-08-17 Corning Incorporated Radially varying and azimuthally asymmetric optical waveguide fiber
US6718800B2 (en) * 1999-03-08 2004-04-13 Fitel Usa Corp. Method of collapsing a tube for an optical fiber preform
US6422043B1 (en) * 1999-11-16 2002-07-23 Fitel Usa Corp. Method of making an improved multimode optical fiber and fiber made by method
US6550279B1 (en) 2000-09-01 2003-04-22 Corning Incorporated Process for drawing optical fiber from a multiple crucible apparatus with a thermal gradient
DE10064730B4 (de) * 2000-12-22 2004-07-29 Heraeus Tenevo Ag Verfahren zur Herstellung eines Hohlzylinders aus Quarzglas
WO2002098808A1 (en) * 2001-05-31 2002-12-12 Corning Incorporated Method of low pmd optical fiber manufacture
US6574994B2 (en) 2001-06-18 2003-06-10 Corning Incorporated Method of manufacturing multi-segmented optical fiber and preform
US6687445B2 (en) * 2001-06-25 2004-02-03 Nufern Double-clad optical fiber for lasers and amplifiers
WO2003011779A1 (en) * 2001-07-31 2003-02-13 Corning Incorporated Method for fabricating a low polarization mode dispersion optical fiber
US6588235B2 (en) 2001-08-30 2003-07-08 Corning Incorporated Method of centering a fiber core in a multiple-crucible method
KR100521958B1 (ko) * 2002-09-18 2005-10-14 엘에스전선 주식회사 수정화학기상증착법에 있어서 이중토치를 이용한 광섬유모재의 제조 방법 및 장치
US6970632B2 (en) * 2004-05-03 2005-11-29 Corning Incorporated Solid type single polarization fiber and apparatus
US7231786B2 (en) * 2004-07-29 2007-06-19 Corning Incorporated Process and device for manufacturing glass sheet
US20060130528A1 (en) * 2004-12-22 2006-06-22 Nelson Brian K Method of making a hole assisted fiber device and fiber preform
US20060133753A1 (en) * 2004-12-22 2006-06-22 Nelson Brian K Hole assisted fiber device and fiber preform
US7346250B1 (en) * 2007-03-30 2008-03-18 Corning Incorporated Preferential etching method of forming microstructure for an optical waveguide
US8434330B2 (en) * 2009-10-22 2013-05-07 Ofs Fitel, Llc Techniques for manufacturing birefringent optical fiber
JP2011219339A (ja) * 2010-04-14 2011-11-04 Sumitomo Electric Ind Ltd 光ファイバの製造方法及び光ファイバ母材
US10197752B2 (en) * 2013-02-22 2019-02-05 Weatherford Technology Holdings, Llc Monolithic multi-optical-waveguide penetrator or connector
US9975802B2 (en) * 2013-05-31 2018-05-22 Corning Incorporated Method for making low bend loss optical fiber preforms
US20150284286A1 (en) * 2014-04-08 2015-10-08 Corning Incorporated Method for making preforms and optical fibers
CN107417090A (zh) * 2017-05-29 2017-12-01 江苏法尔胜光子有限公司 一种椭圆芯保偏光纤的制造方法
CN110501778B (zh) * 2019-08-16 2021-04-30 武汉唐联光电科技有限公司 一种保偏光纤、制造模具及方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930704A1 (de) * 1979-07-28 1981-02-12 Licentia Gmbh Verfahren zur herstellung einer lichtleitfaser
US4395270A (en) * 1981-04-13 1983-07-26 Corning Glass Works Method of fabricating a polarization retaining single-mode optical waveguide
JPS6014321B2 (ja) * 1981-08-18 1985-04-12 日立電線株式会社 定偏波型光フアイバ
JPS58145632A (ja) * 1982-02-19 1983-08-30 Furukawa Electric Co Ltd:The 定偏波光フアイバ母材の製造方法
JPS5950043A (ja) * 1982-09-17 1984-03-22 Sumitomo Electric Ind Ltd 定偏波フアイバの製造方法
US4561871A (en) * 1983-12-27 1985-12-31 Corning Glass Works Method of making polarization preserving optical fiber
US4709986A (en) * 1984-06-18 1987-12-01 Polaroid Corporation Ensheathed optical fiber and coupling method
US4859223A (en) * 1987-06-15 1989-08-22 Hitachi Cable Limited Method of manufacturing polarization-maintaining optical fibers
EP0372450B1 (fr) * 1988-12-09 1994-01-12 Alcatel N.V. Procédé d'élaboration d'une préforme pour fibre optique à maintien de polarisation
JP2762571B2 (ja) * 1989-06-13 1998-06-04 住友電気工業株式会社 偏波保持光ファイバの製造方法
FR2655326B1 (fr) * 1989-12-01 1992-02-21 Thomson Csf Procede de realisation d'une fibre optique creuse et dispositif de realisation d'une fibre optique creuse.

Also Published As

Publication number Publication date
EP0522229A1 (en) 1993-01-13
AU1866992A (en) 1993-01-14
CA2060016A1 (en) 1993-01-12
KR100291888B1 (ko) 2001-06-01
US5149349A (en) 1992-09-22
EP0522229B1 (en) 1996-08-21
JPH05246733A (ja) 1993-09-24
JP3292889B2 (ja) 2002-06-17
DE69212922T2 (de) 1997-02-20
KR930002848A (ko) 1993-02-23
TW226045B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1994-07-01
DE69212922D1 (de) 1996-09-26
AU648181B2 (en) 1994-04-14
CA2060016C (en) 2002-04-09

Similar Documents

Publication Publication Date Title
ES2090370T3 (es) Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion.
ES2142790T3 (es) Epitopos antigenicos presentes sobre iga unida a la membrana pero no secretada.
ES8900114A1 (es) Procedimiento para fabricar un genero no tejido parecido a un tejido de esponja con cordoncillos, para uso en la elaboracion de toallas, panos de secado y tejidos decorativos semiduraderos.
DE68927431D1 (de) Polarisationserhaltende optische Faser zur Herstellung von Kopplern
ES2052277T3 (es) Fibras de superficie especifica aumentada, un metodo para su fabricacion, pasta papelera esponjada que consiste en tales fibras y el uso de las fibras como material de absorcion.
ES2066610T3 (es) Elemento de construccion compuesto de un tejido distanciador resinificado para formar un cuerpo hueco.
ES2136129T3 (es) Dispositivo de anillo que solapa para el ajuste de la curvatura corneal.
ES2094626T3 (es) Geles acuosos que contienen unas microesferas huecas expandidas.
ES2038666T3 (es) Procedimiento para fabricar una estructura fibrosa, laminar y permeable.
IT8267150A0 (it) Procedimento e apparecchiatura per la determinazione del profilo d in dice di rifrazione di fibre ottiche e preforme per fibre ottiche
IT1007557B (it) Fibre di poliamidi aromatiche con tenenti materiali schermanti la lu ce ultravioletta e processo per la loro produzione
ES281106Y (es) Estructura de malla
ES2039434T3 (es) Conectador de fibra optica.
ES2052260T3 (es) Organizador de empalmes.
ES2094563T3 (es) Tela de conformacion.
ES2078475T3 (es) Procedimiento y dispositivo de produccion de fibras por centrifugacion interna y aplicacion a la obtencion de fibras de ciertos vidrios.
ES2106184T3 (es) Fabricacion de cables.
DE3486016D1 (de) Optisches nachrichtenkabel.
IT1191998B (it) Procedimento e apparecchiatura per la produzione di preforme per fibre ottiche operanti nella regione spettrale del medio infrarosso
BR9605433A (pt) Processo de estiramento de pré-forma de fibra ótica para fabricação de fibra ótica
ES2094234T3 (es) Interferometro.
IT1017108B (it) Procedimento per la produzione di organi di rinforzo in fibre di vetro
CN208689303U (zh) 一种眼镜
ES2128491T3 (es) Procedimiento para la fabricacion controlada de materiales sinteticos reforzados.
PE19796A1 (es) Girador de componentes ortogonales de polarizacion

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 522229

Country of ref document: ES

FG2A Definitive protection

Ref document number: 522229

Country of ref document: ES