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    Method for manufacturing optical fiber preforms
    4.
    发明授权
    Method for manufacturing optical fiber preforms 失效
    制造光纤预制棒的方法

    公开(公告)号：US07299659B2

    公开(公告)日：2007-11-27

    申请号：US10451076

    申请日：2001-11-30

    Applicant: Giacomo Stefano Roba ,  Massimo Nutini

    Inventor： Giacomo Stefano Roba ,  Massimo Nutini

    IPC: C03B37/018 ,  F23D11/00

    CPC classification number: C03B37/0142 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/24 ,  C03B2207/40 ,  C03B2207/42 ,  F23D14/22 ,  F23D14/32 ,  F23D14/583

    Abstract: Method and burner for increasing the deposition rate of porous glass deposit in the manufacture of optical preforms, by modifying the cross-sectional shape of the flow of glass particles impacting onto a target preform. In particular, the cross-section of the flow of glass particles is modified by increasing the dimension of the flow from a circular cross-section to one having a major and minor axis in a direction substantially perpendicular to the longitudinal axis of the target preform.

    Abstract translation: 方法和燃烧器，用于通过改变撞击到目标预制件上的玻璃颗粒的流动的横截面形状来增加多孔玻璃沉积物在制造光学预型件中的沉积速率。 特别地，玻璃颗粒流动的横截面通过将流体从圆形横截面增大到具有基本上垂直于目标预制件的纵向轴线的方向的长轴和短轴的尺寸而被修改。

    Method for manufacturing optical fibre preforms
    5.
    发明授权
    Method for manufacturing optical fibre preforms 失效
    制造光纤预制棒的方法

    公开(公告)号：US07441416B2

    公开(公告)日：2008-10-28

    申请号：US10450918

    申请日：2001-11-30

    Applicant: Giacomo Stefano Roba ,  Massimo Nutini

    Inventor： Giacomo Stefano Roba ,  Massimo Nutini

    IPC: C03B37/018

    CPC classification number: F23D14/32 ,  C03B37/0142 ,  C03B2207/08 ,  C03B2207/16 ,  C03B2207/24 ,  C03B2207/40 ,  F23D14/22 ,  F23D14/583

    Abstract: Multi-flame burner wherein each flame is separated with respect to the neighboring flame by at least one separating tube made of a heat resistant material, for example, quartz glass or ceramic material. The burner also has a plurality of co-axial pipes, preferably made of a metallic material. The cross section of the upper end of the separating tube can be modified in order to increase the deposition rate of the burner. Methods for manufacturing optical fibre preforms by vapour deposition using the multi-flame deposition burners.

    Abstract translation: 多火焰燃烧器，其中每个火焰通过由耐热材料例如石英玻璃或陶瓷材料制成的至少一个分离管相对于相邻火焰分开。 燃烧器还具有多个同轴管，优选由金属材料制成。 可以改变分离管的上端的横截面以增加燃烧器的沉积速率。 使用多火焰沉积燃烧器通过气相沉积制造光纤预制棒的方法。

    Method and deposition burner for manufacturing optical fibre preforms
    6.
    发明申请
    Method and deposition burner for manufacturing optical fibre preforms 失效
    用于制造光纤预制棒的方法和沉积燃烧器

    公开(公告)号：US20040112092A1

    公开(公告)日：2004-06-17

    申请号：US10451076

    申请日：2003-12-24

    Inventor： Giacomo Stefano Roba ,  Massimo Nutini

    IPC: C03B037/018

    CPC classification number: C03B37/0142 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/24 ,  C03B2207/40 ,  C03B2207/42 ,  F23D14/22 ,  F23D14/32 ,  F23D14/583

    Abstract: Method and burner for increasing the deposition rate of porous glass deposit in the manufacture of optical preforms, by modifying the cross-sectional shape of the flow of glass particles impacting onto a target preform. In particular, the cross-section of the flow of glass particles is modified by increasing the dimension of the flow from a circular cross-section to one having a major and minor axis in a direction substantially perpendicular to the longitudinal axis of the target preform.

    Abstract translation: 方法和燃烧器，用于通过改变撞击到目标预制件上的玻璃颗粒的流动的横截面形状来增加多孔玻璃沉积物在制造光学预型件中的沉积速率。 特别地，玻璃颗粒流动的横截面通过将流体从圆形横截面增大到具有基本上垂直于目标预制件的纵向轴线的方向的长轴和短轴的尺寸而被修改。

    Continuous optical fiber preform fabrication method
    7.
    发明授权
    Continuous optical fiber preform fabrication method 失效
    连续光纤预制棒制造方法

    公开(公告)号：US4062665A

    公开(公告)日：1977-12-13

    申请号：US784869

    申请日：1977-04-05

    Applicant: Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    Inventor： Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    IPC: C03B37/018 ,  C03B37/014 ,  G02B6/00 ,  C03B37/00

    CPC classification number: C03B37/01426 ,  C03B37/014 ,  C03B37/01406 ,  C03B37/01413 ,  C03B37/0142 ,  C03B2201/06 ,  C03B2201/10 ,  C03B2201/42 ,  C03B2203/22 ,  C03B2207/04 ,  C03B2207/12 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/42 ,  C03B2207/62 ,  C03B2207/70 ,  C03B2207/81 ,  C03B2207/86

    Abstract: A refractory starting member is rotated and, at the same time, moved along the axis of rotation. A glass raw material for the formation of the core of a porous preform and consequently an optical fiber preform is introduced into a high temperature portion near the tip of a high temperature burner from a nozzle for the core disposed in alignment with the center of rotation of one end face of the starting member. The glass raw material blown out from the nozzle for the core are caused by the flames of the high temperature burner to react to produce glass fine particles, which are deposited on abovesaid end face of the starting member at the central portion thereof in its axial direction to form a porous core. At least one nozzle for spraying a glass raw material for the formation of the cladding of the optical fiber preform is disposed opposite to the end face of the starting member but a little deviated from the axis of rotation thereof, or disposed opposite to the peripheral surface of the porous core. The glass raw material for the cladding is sprayed from the nozzle for the cladding to the high temperature portion of the high temperature burner, and caused to react to form glass fine particles, which are deposited on the end face of the starting member on the outside of the porous core or on the peripheral surface thereof at the same time as the formation of the latter, forming a porous cladding. The porous preform thus obtained is moved into a high temperature furnace provided on the path of movement of the preform for the vitrification thereof into an optical fiber preform.

    Abstract translation: 旋转耐火起动部件，并且同时沿着旋转轴线移动。 用于形成多孔预成型件的核心的玻璃原料以及因此的光纤预制件被引入到高温燃烧器的尖端附近的高温部分中，所述高温部分从用于芯部的喷嘴设置成与旋转中心 起始构件的一个端面。 从芯的喷嘴吹出的玻璃原料是由高温燃烧器的火焰引起的反应而产生的玻璃微粒，它们在其中心部分的轴向方向沉积在起始构件的上端面上 以形成多孔芯。 用于喷射用于形成光纤预制件的包层的玻璃原料的至少一个喷嘴设置成与起始构件的端面相对，但是稍微偏离其旋转轴线，或者与周面相对设置 的多孔芯。 用于包层的玻璃原料从用于包层的喷嘴喷射到高温燃烧器的高温部分，并使其反应形成玻璃细颗粒，其沉积在外部的起始构件的端面上 的多孔芯或其外周表面，同时形成多孔芯，形成多孔包层。 将由此获得的多孔预制件移动到设置在预成型体的运动路径上的高温炉中，以将其玻璃化成为光纤预制件。

    GLASS FINE PARTICLE SYNTHESIS BURNER, GLASS FINE PARTICLE DEPOSITION BODY MANUFACTURING METHOD, AND GLASS FINE PARTICLE DEPOSITION APPARATUS
    8.
    发明申请
    GLASS FINE PARTICLE SYNTHESIS BURNER, GLASS FINE PARTICLE DEPOSITION BODY MANUFACTURING METHOD, AND GLASS FINE PARTICLE DEPOSITION APPARATUS 有权
    玻璃微粒合成燃烧器，玻璃微粒沉积体制造方法和玻璃微粒沉积装置

    公开(公告)号：US20140174135A1

    公开(公告)日：2014-06-26

    申请号：US14108190

    申请日：2013-12-16

    Applicant: Shin-Etsu Chemical Co., Ltd.

    Inventor： Yuhei URATA

    IPC: C03B37/014

    CPC classification number: C03B37/0142 ,  C03B2207/06 ,  C03B2207/12 ,  C03B2207/16 ,  C03B2207/18 ,  C03B2207/20 ,  C03B2207/50 ,  Y02P40/57

    Abstract: A glass fine particle synthesis burner comprising a glass raw material gas emission path for emitting glass raw material; a ring-shaped combustible gas emission path for emitting combustible gas arranged outside the glass raw material emission path; a ring-shaped combustion aiding gas emission path for emitting combustion aiding gas arranged outside the combustible gas emission path; and small diameter nozzles for emitting the combustion aiding gas within the combustible gas emission path. In a cross section of the glass fine particle synthesis burner formed by cleaving orthogonal to a central axis thereof, when the glass fine particle synthesis burner is divided into two regions by a predetermined straight line passing through a center of the glass fine particle synthesis burner, a total area of the small diameter nozzles in one of the regions is greater than a total area of the small diameter nozzles in the other region.

    Abstract translation: 一种玻璃微粒合成燃烧器，包括用于发射玻璃原料的玻璃原料气体排放路径; 用于发射布置在玻璃原料排放路径外部的可燃气体的环形可燃气体排放路径; 环状的燃烧辅助气体排出路径，其排出配置在所述可燃气体排出路径的外侧的燃烧辅助气体; 以及用于在可燃气体排放路径内发射助燃气体的小直径喷嘴。 在通过与其中心轴线正交地切割形成的玻璃微粒合成燃烧器的截面中，当玻璃微粒合成燃烧器通过玻璃微粒合成燃烧器的中心的预定直线分成两个区域时， 一个区域中的小直径喷嘴的总面积大于另一区域中的小直径喷嘴的总面积。

    Method of fabricating optical fiber preforms
    9.
    发明授权
    Method of fabricating optical fiber preforms 失效
    制造光纤预制棒的方法

    公开(公告)号：US4915717A

    公开(公告)日：1990-04-10

    申请号：US577405

    申请日：1984-02-06

    Applicant: Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

    Inventor： Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

    IPC: C03B37/014

    CPC classification number: C03B37/0142 ,  C03B2207/04 ,  C03B2207/10 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/26 ,  C03B2207/36 ,  C03B2207/50

    Abstract: An improved method for fabricating an optical fiber preform by the vapor phase axial deposition (VAD) method, comprises forming core and cladding soots at the same time by the use of core and cladding burners. The improvement is that the cladding burner is designed so that at least one of the outlets for a feed material gas, a fuel gas, an auxiliary fuel gas, and an inert gas is composed of a plurality of openings. In this improved method, the temperature distribution from the boundary of the core soot to the periphery of the cladding soot is made smooth, and thus the cladding soot is prevented from cracking.

    Abstract translation: 通过气相轴向沉积（VAD）方法制造光纤预制件的改进方法包括通过使用芯和包层燃烧器同时形成芯和包覆烟灰。 改进之处在于，包层燃烧器被设计成使得用于进料材料气体，燃料气体，辅助燃料气体和惰性气体的出口中的至少一个由多个开口组成。 在这种改进的方法中，从核心烟灰的边界到包层烟灰的周边的温度分布变得平滑，因此防止了包层烟灰的破裂。

    Torch for fabricating optical fiber preform
    10.
    发明授权
    Torch for fabricating optical fiber preform 失效
    用于制造光纤预制棒的手电筒

    公开(公告)号：US4810189A

    公开(公告)日：1989-03-07

    申请号：US13088

    申请日：1987-02-10

    Applicant: Masatoshi Mikami ,  Kunihiro Matsubara

    Inventor： Masatoshi Mikami ,  Kunihiro Matsubara

    IPC: F23D14/52 ,  C03B8/04 ,  C03B37/014 ,  C03B37/018 ,  G02B6/00 ,  F23D14/62

    CPC classification number: C03B37/0142 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/12 ,  C03B2207/14 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/26 ,  C03B2207/36 ,  C03B2207/42

    Abstract: A torch for fabricating an optical fiber perform which has a plurality of raw gas injection passages at the center of the torch, a plurality of small-diameter combustion supporting gas injection passages independent of each other and disposed to surround the raw gas injection passages on the outer periphery of the raw gas injection passages disposed at the center of the torch, and an annular combustible gas injection passage disposed around the small-diameter combustion supporting gas injection passages. Thus, the torch can stably manufacture porous glass preforms.

    Abstract translation: 一种用于制造光纤的手电筒，其具有在炬的中心处的多个原料气体注入通道，多个小直径燃烧支持气体注入通道彼此独立并且设置成围绕在该喷嘴的原料气体注入通道 设置在割炬中心处的原料气体注入通道的外周和设置在小直径燃烧支持气体注入通道周围的环形可燃气体注入通道。 因此，手电筒可以稳定地制造多孔玻璃预制件。

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