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1. 发明专利

JPS6117433A Manufacture of optical fiber preform 失效
标题翻译：光纤预制件的制造
公开(公告)号：JPS6117433A
公开(公告)日：1986-01-25
申请号：JP13772384
申请日：1984-07-03
申请人： Hitachi Cable Ltd
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI
IPC分类号： C03B37/018 , C03C13/04 , G02B6/00
CPC分类号： C03B37/01823 , C03B2201/12
摘要： PURPOSE:To produce an optical fiber preform capable of improving the rate of growth of a glass layer, by supplying a flon gas to a chamber from the backside of a high-frequency plasma torch, and supplying a glass-forming main raw material to the space in front of the torch. CONSTITUTION:An oxygen plasma flame is generated by supplying oxygen to a high-frequency plasma torch 1 as shown in the figure as the arrows. A flon gas 12 is supplied through the reaction gas introducing line 2, and SiCl4 is introduced through the reaction introducing line 2A using oxygen gas as the carrier gas. The introduced reactants are made to react with each other at the lower part of the plasma flame in the reaction chamber 4, and an F-doped SiO2 glass layer is deposited on the target rod 6 made of quartz glass. The target rod 6 is rotated with a glass lathe 5, and a glass layer 7 is formed to the circumference of the target rod 6 along the longitudinal direction.
摘要翻译：目的：为了生产能够提高玻璃层生长速率的光纤预制棒，通过从高频等离子体焰炬的背面向室内供应氟里昂气体，并将玻璃形成主要原料供给到火炬前面的空间。构成：通过向如图所示的箭头所示的高频等离子体焰炬1供给氧而产生氧等离子火焰。通过反应气体导入管线2供给氟利昂气体12，通过使用氧气作为载气的反应引入管线2A导入SiCl4。使引入的反应物在反应室4中的等离子火焰的下部彼此反应，并且在由石英玻璃制成的靶棒6上沉积F掺杂的SiO 2玻璃层。目标杆6用玻璃车床5旋转，玻璃层7沿着长度方向形成在目标杆6的周围。

2. 发明专利

JPS60151241A MANUFACTURE OF BASE MATERIAL FOR OPTICAL FIBER 失效
公开(公告)号：JPS60151241A
公开(公告)日：1985-08-09
申请号：JP610084
申请日：1984-01-17
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI , NAKAMURA MASASHI
IPC分类号： G02B6/00 , C03B19/14 , C03B37/018
摘要： PURPOSE:To obtain uniformly the titled base material with a small loss in the longitudinal direction by regulating the distance between a high-frequency plasma torch and a target rod or the surface of a formed glass film when glass is directly synthesized on the outside of the rod with the torch. CONSTITUTION:An oxygen plasma flame is generated in a high-frequency plasma torch 1, and a reactive gas for forming glass is introduced from a pipe 2 to deposit a glass film 7 on the outside of a target rod 6 supported by a glass lathe 5 by an oxidation reaction under heating. The surface temp. of the plasma flame is much lower than the central temp., so it becomes difficult to form the film 7 when the distance between the rod 6 and the torch 1 is too long. A film 7 with a small loss in the longitudinal direction of the rod 6 can be uniformly formed by maintaining 20-30mm. distance (x) between the rod 6 and the torch 1.

3. 发明专利

JPS60122742A MANUFACTURING DEVICE OF PARENT MATERIAL FOR OPTICAL FIBER 失效
公开(公告)号：JPS60122742A
公开(公告)日：1985-07-01
申请号：JP23210483
申请日：1983-12-07
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , FUJITA TSUNEYOSHI , NAKAMURA MASASHI , TERAOKA TATSUO
IPC分类号： G02B6/00 , C03B19/14 , C03B37/014 , C03B37/018
摘要： PURPOSE:To manufacture an excellent parent material for optical fiber by preventing the intrusion of moisture into the atmosphere in a reaction chamber, and stabilizing the pressure in forming a clad material on the circumference of a core material in the manufacture of the parent material for the optical fiber. CONSTITUTION:A gaseous starting material consisting of SiCl4 and CFCl2 for forming a clad material of a parent material for an optical fiber is introduced into a reaction chamber 4 from an inlet 2 while generating an oxygen plasma flame with a high-frequency plasma generator 1. A target rod 6 made of quartz glass as a core material for the parent material is fixed to a glass lathe 5 in the reaction chamber 4, and moved in the horizontal direction while revolving to form a film 7 for the clad on the surface of the core material 6. A seal cap 3 by gaseous N2 is provided to the part of the reaction chamber 1 pierced by the core material 6 to prevent the intrusion of moisture from the outside into the reaction chamber 1. The internal pressure of the reaction chamber is also stabilized by the operation of an air discharge valve 15 controlled by a pressure sensor 16. An uniform clad material film 7 is formed on the circumference of the core material 6 in this way.

4. 发明专利

JPS5467508A MALLEABLE MAGNESIUM ALLOY 失效
公开(公告)号：JPS5467508A
公开(公告)日：1979-05-31
申请号：JP13189877
申请日：1977-11-02
申请人： HITACHI CABLE
发明人： KAMATA KUNIHISA , FUJITA TSUNEYOSHI
IPC分类号： C22C23/00 , C22C24/00
摘要： PURPOSE:A malleable magnesium alloy having exceellent plating adhesiveness, prepared by adding a fixed amount of Ca to an alloy based on the compositions specified by ASTM-AZ 61A and -AZ 80A. CONSTITUTION:The magnesium alloy consists primarily of 5.8 to 9.2 wt% Al, more than 0.15 wt% Mn, 0.2 to 1.5 wt% Zn, less than 0.7 wt% C, less than 1.9 wt% impurities, and the remaing Mg. EFFECT:Even if the Mg alloy is plated with 10mu thick Cu, plated with 15mu thick nonelectrolytic Ni, heated at 200 deg.C for 2 hours, and then dipped in water for hardening, no abnormal phenomena and also no exfoliation take place in plated film.

5. 发明专利

JPH0582333B2 失效
公开(公告)号：JPH0582333B2
公开(公告)日：1993-11-18
申请号：JP14112284
申请日：1984-07-06
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI
IPC分类号： C03B37/018 , G02B6/00 , C03B8/04

6. 发明专利

JPH0436102B2 失效
公开(公告)号：JPH0436102B2
公开(公告)日：1992-06-15
申请号：JP22701085
申请日：1985-10-14
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , FUJITA TSUNEYOSHI
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018

7. 发明专利

JPH0247415B2 失效
公开(公告)号：JPH0247415B2
公开(公告)日：1990-10-19
申请号：JP13772484
申请日：1984-07-03
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI
IPC分类号： C03B37/018 , C03C13/04 , G02B6/00

8. 发明专利

JPS6117434A Manufacture of optical fiber preform 失效
标题翻译：光纤预制件的制造
公开(公告)号：JPS6117434A
公开(公告)日：1986-01-25
申请号：JP13772484
申请日：1984-07-03
申请人： Hitachi Cable Ltd
发明人： TOKUNAGA TOSHIHIDE , TERAOKA TATSUO , FUJITA TSUNEYOSHI
IPC分类号： C03B37/018 , C03C13/04 , G02B6/00
CPC分类号： C03B37/01823 , C03B2201/12
摘要： PURPOSE:To produce an optical fiber preform capable of forming a highly doped fluorine glass, by using a plurality of reaction gas introducing lines, supplying a flon gas through a line near a high-frequency plasma torch to a reaction chamber, and supplying SiCl4 through a line placed closed to the above supplying line. CONSTITUTION:An oxygen plasma flame is generated by supplying oxygen to a high-frequency plasma torch 1 as shown in the figure as the arrows. A flon gas 12 is supplied through the reaction gas introducing line 2 placed close to the plasma torch 1, and SiCl4 is introduced into the reaction chamber 4 through the reaction gas introducing line 2B placed adjacent to the reaction gas introducing line 2 using oxygen gas as the carrier gas. The introduced reactants are made to react with each other to deposit an F-doped SiO2 glass layer 7 on the target rod 6 made of quartz glass.
摘要翻译：目的：为了生产能够形成高掺杂氟玻璃的光纤预制件，通过使用多个反应气体引入管线，将氟里昂气体通过高频等离子体焰炬附近的管线供应到反应室，并将SiCl 4通过一条线放置在上述供应线上。构成：通过向如图所示的箭头所示的高频等离子体焰炬1供给氧而产生氧等离子火焰。通过设置在等离子体焰炬1附近的反应气体导入管线2供给氟利昂气体12，通过使用氧气作为反应气体导入管线2配置的反应气体导入管线2B，将SiCl 4引入反应室4 载气。引入的反应物彼此反应以将F掺杂的SiO 2玻璃层7沉积在由石英玻璃制成的靶棒6上。

9. 发明专利

JPS63107835A PRODUCTION OF OPTICAL FIBER 失效
公开(公告)号：JPS63107835A
公开(公告)日：1988-05-12
申请号：JP25183786
申请日：1986-10-24
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , FUJITA TSUNEYOSHI , OKANO HIROAKI , MURAKAMI KAZUYA
IPC分类号： G02B6/00 , C03B20/00 , C03B37/012 , C03B37/014 , C03B37/018
摘要： PURPOSE:To minimize the influence of flaws and bubbles existing on the surface of a quartz glass tube and to obtain a high-strength optical fiber by inserting a core rod into the quartz glass tube on which a synthetic glass film is formed and stretching the tube and rod by heating. CONSTITUTION:Ar and O2 are passed as gaseous plasma from a plasma generating source into an oscillation tube 1 from the upper part thereof and the gaseous flow thereof is discharged by a high-frequency coil 2 to form a plasma flame 9. O2 is passed in this state from a rotating introducing terminal 10 into the quartz glass tube 6 and while the quartz glass tube 6 is rotated by a glass lathe 5, the tube 6 is moved in a horizontal direction and is surface-treated with the plasma flame 9. SiCl4 is supplied as a reactive gas from a reactive gas introducing pipe 3 by an Ar carrier to the plasma flame 9 and the tube 6 is moved. An SiO2 film is formed on the outside peripheral face of the tube 6 in the above-mentioned manner. The core rod is inserted into the tube 6 on which the SiO2 film is formed, then the tube and the rod are stretched by heating in an electric furnace, by which the optical fiber is obtd.

10. 发明专利

JPS6287429A METHOD FOR PRODUCING OPTICAL FIBER PREFORM AND APPARATUS THEREFOR 失效
公开(公告)号：JPS6287429A
公开(公告)日：1987-04-21
申请号：JP22701085
申请日：1985-10-14
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , FUJITA TSUNEYOSHI
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018
摘要： PURPOSE:To stabilize a plasma flame and produce an optical fiber preform at a high speed, by supplying a reaction gas for forming a glass through a gap between layers of a high-frequency coil toward a plasma flame and synthesizing a glass on a target rod placed at downstream side of the plasma flame. CONSTITUTION:A multi-layered high-frequency coil 2 is provided at the outer circumference of a plasma oscillation tube 1. A plasma gas is introduced into the oscillation tube 1 from its top and the gas stream is discharged with the high-frequency coil 2 to generate a plasma flame 9. A reaction gas is supplied through a reaction gas inlet tube to the plasma flame 9 and, at the same time, a target rod 6 is horizontally transferred while revolving with a glass lathe 5 to form a glass film 10 having a desired refractive index on the outer circumference of the target rod 6. The reaction gas inlet tube 3 is preferably positioned at the position B between the first layer and the second layer of the high-frequency coil 2. The reaction efficiency of the reaction gas can be improved and a high-quality optical fiber preform can be produced by this process.

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