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
Links
- 239000000835 fiber Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 230000010287 polarization Effects 0.000 title 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
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)
Abstract
PRIMERAMENTE SE REALIZA UN ESTIRADO EN VACIO DEL PRODUCTO DEJANDO UNAS ABERTURAS LONGITUDINALES DIAMETRALMENTE OPUESTAS EN EL CRISTAL DE LA CUBIERTA PARALELO A LA ZONA DEL CRISTAL DEL NUCLEO. EL DESMOLDEO EN VACIO SE ESTIRA PARA FORMAR UNA FIBRA BAJO TALES CONDICIONES QUE LAS ABERTURAS SE CIERRAN A MEDIDA QUE LA FIBRA ESTA SIENDO ESTIRADA. EL FLUJO DEL CRISTAL CIRCUNDANTE, INCLUYENDO LA ZONA DE CRISTAL DEL NUCLEO, HACIA LAS ABERTURAS QUE SE ESTAN CERRANDO, PROVOCAN QUE EL NUCLEO ASUMA UNA FORMA ELIPTICA. LAS ABERTURAS TIENEN UN AREA DE SECCION DE CORTE TAL Y UNA SEPARACION DEL NUCLEO QUE EL NUCLEO DESARROLLA LAS CARACTERISTICAS DESEADAS.
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 (es) |
EP (1) | EP0522229B1 (es) |
JP (1) | JP3292889B2 (es) |
KR (1) | KR100291888B1 (es) |
AU (1) | AU648181B2 (es) |
CA (1) | CA2060016C (es) |
DE (1) | DE69212922T2 (es) |
ES (1) | ES2090370T3 (es) |
TW (1) | TW226045B (es) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5307436A (en) * | 1993-04-20 | 1994-04-26 | Corning Incorporated | Partially detached core optical waveguide |
CA2161939A1 (en) * | 1994-12-20 | 1996-06-21 | George E. Berkey | Method of making optical fiber having depressed index core region |
US5917109A (en) * | 1994-12-20 | 1999-06-29 | Corning Incorporated | 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 |
JP2000512256A (ja) * | 1996-06-17 | 2000-09-19 | コーニング インコーポレイテッド | 偏光保持型ファイバの作成方法 |
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 |
KR20040024598A (ko) * | 2001-07-31 | 2004-03-20 | 코닝 인코포레이티드 | 저편광 모드 분산 광섬유의 제조방법 |
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)
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 |
DE68912288T2 (de) * | 1988-12-09 | 1994-05-05 | Alcatel Nv | Verfahren zum Verarbeiten einer Vorform für polarisationserhaltende optische Fasern. |
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. |
-
1991
- 1991-07-11 US US07/728,276 patent/US5149349A/en not_active Expired - Lifetime
-
1992
- 1992-01-20 ES ES92100832T patent/ES2090370T3/es not_active Expired - Lifetime
- 1992-01-20 EP EP92100832A patent/EP0522229B1/en not_active Expired - Lifetime
- 1992-01-20 DE DE69212922T patent/DE69212922T2/de not_active Expired - Fee Related
- 1992-01-24 CA CA002060016A patent/CA2060016C/en not_active Expired - Fee Related
- 1992-03-28 TW TW081102446A patent/TW226045B/zh active
- 1992-06-30 AU AU18669/92A patent/AU648181B2/en not_active Ceased
- 1992-07-09 JP JP20425592A patent/JP3292889B2/ja not_active Expired - Fee Related
- 1992-07-10 KR KR1019920012331A patent/KR100291888B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH05246733A (ja) | 1993-09-24 |
KR930002848A (ko) | 1993-02-23 |
KR100291888B1 (ko) | 2001-06-01 |
DE69212922T2 (de) | 1997-02-20 |
CA2060016C (en) | 2002-04-09 |
EP0522229B1 (en) | 1996-08-21 |
EP0522229A1 (en) | 1993-01-13 |
JP3292889B2 (ja) | 2002-06-17 |
AU1866992A (en) | 1993-01-14 |
DE69212922D1 (de) | 1996-09-26 |
US5149349A (en) | 1992-09-22 |
TW226045B (es) | 1994-07-01 |
CA2060016A1 (en) | 1993-01-12 |
AU648181B2 (en) | 1994-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2090370T3 (es) | Procedimiento de fabricacion de una fibra optica monomodo con retencion de polarizacion. | |
DE68927431T2 (de) | Polarisationserhaltende optische Faser zur Herstellung von Kopplern | |
ES2136129T3 (es) | Dispositivo de anillo que solapa para el ajuste de la curvatura corneal. | |
ES2111312T3 (es) | Procedimiento de manufactura de un producto de fibra natural. | |
ES2179100T3 (es) | Gafas que utilizan lentes de longitud focal variable que tienen una periferia configurada de forma arbitraria. | |
IT1007557B (it) | Fibre di poliamidi aromatiche con tenenti materiali schermanti la lu ce ultravioletta e processo per la loro produzione | |
AR241216A1 (es) | Un exhibidor | |
BR8902165A (pt) | Processo para formacao de uma camada de pre-molde composta por filamentos texteis individuais de vidro intimamente misturadas com fibra termoplastica;camada de pre-molde auto-sustentavel;e composito formado com pelo menos uma camada de pre-molde | |
ES2053322T3 (es) | Fructo-oligosacaridos ramificados, procedimiento para su obtencion y utilizacion de los productos que los contienen. | |
ES2068017T3 (es) | Elemento de montura de gafas en resina sintetica y su procedimiento de fabricacion. | |
ES2052260T3 (es) | Organizador de empalmes. | |
ES2057386T3 (es) | Dispositivo decorativo. | |
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 | |
JPS5660401A (en) | Optical branching filter | |
ES489213A0 (es) | Perfeccionamientos introducidos en el proceso de fabricacion de cristales oftalmicos con gran indice de refraccion. | |
ES2094234T3 (es) | Interferometro. | |
GB617084A (en) | Improvements in spectacle frames | |
PE19796A1 (es) | Girador de componentes ortogonales de polarizacion | |
FR1520199A (fr) | Perfectionnement apporté à la fabrication des structures en matière plastique renforcée par des fibres de verre | |
GB600726A (en) | Improvements in or relating to spectacles, goggles and the like | |
BR9004223A (pt) | Processo para producao de uma pre-forma porosa para uso na fabricacao de fibra otica | |
ES1052694U (es) | Dispositivo para la iluminacion de bañeras de hidromasaje y similares | |
IT226950Z2 (it) | Struttura di occhiali di sicurezza a protezione integrale particolarmente studiata per operazioni di saldatura, molatura e simili |
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 |