专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS59232933A PRODUCTION OF PREFORM FOR OPTICAL FIBER 失效
公开(公告)号：JPS59232933A
公开(公告)日：1984-12-27
申请号：JP10721783
申请日：1983-06-15
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： YOKOTA HIROSHI , WATANABE MINORU , KUWABARA TOORU , YANO KOUJI , SUDOU SHIYOUICHI , HANAWA FUMIAKI
IPC分类号： C03B37/018 , C03B19/14 , C03B37/014 , G02B6/00 , C03B37/00 , C03B20/00 , G02B5/14
摘要： PURPOSE:To enable production of a titled preform stably for a long period of time without damaging nozzles by providing a nozzle for ejecting inert gas between a nozzle for ejecting H2 and a nozzle for ejecting O2. CONSTITUTION:SiCl4, GeCl4 and H2 are ejected from the central nozzle 1 of a multiple-pipe burner, SiCl4 and H2 from the 2nd nozzle 3, Ar from the 3rd nozzle 3 and O2 from the 4th nozzle 4 to a starting material, by which a porous base mterial is produced. If inert gas such as gaseous Ar (except Rn) is ejected for the purpose of shielding H2 and O2 for an extra short time at a flow rate of 0.1-1.5m/sec in the above-mentioned way, the nozzle tip part is overheated and is kept in a reducting atmosphere. The danger of inducing a damage in an early period is eliminated and therefore the titled preform is produced with good productivity and stable quality and operating condition for a long period of time.

2. 发明专利

JPS60145923A DEVICE FOR PRODUCTION OF BASE MATERIAL FOR OPTICAL FIBER 失效
公开(公告)号：JPS60145923A
公开(公告)日：1985-08-01
申请号：JP7184
申请日：1984-01-05
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KIYOUDOU TSUNEHISA , DANTSUKA TOSHIO , YANO KOUJI , NAKAHARA MOTOHIRO
IPC分类号： G02B6/00 , C03B19/14 , C03B37/014
摘要： PURPOSE:In a sinterer for porous glass base material, the quartz core tube is coated with a fluorine gas-resistant ceramic of a melting point higher than quartz on the inside wall to avoid the contamination with other elements and improve the duration of the installation. CONSTITUTION:The quartz core tube 3 set in the furnace 6 is coated with a ceramic which is resistant to corrosion by fluorine gas and melts at a temperature higher than quartz melting point on the inside wall. The material of the ceramic is composed of Al2O3, SiC, AlN, TiO2, SiB, etc. and the thickness of the ceramic layer 4 is preferably about 5mum-2mm. and the layer is formed by the plasma CVD method or the like. Then, the porous glass base material 1 is put in the core tube 3 and subjected to dehydrative sintering in an atmosphere containing a fluorine compound such as SF6 to give the objective base material for optical of high quality.

3. 发明专利

JPS59232937A PRODUCTION OF PREFORM FOR OPTICAL FIBER 失效
公开(公告)号：JPS59232937A
公开(公告)日：1984-12-27
申请号：JP10993983
申请日：1983-06-17
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： YANO KOUJI , TODA YUUICHI
IPC分类号： C03B37/018 , C03B19/14 , C03B37/014 , G02B6/00 , C03B37/00 , C03B20/00
摘要： PURPOSE:To improve working effiency of a device and to improve the quality of a product in the stage of producing a preform for an optical fiber by a VAD method by taking out continuously a soot body in the state of soot or in the half-sintered state of soot. CONSTITUTION:A starting base material 10 such as a quartz bar or the like is passed through the hole of a cover 5 of a reaction vessel 4 and is gripped by a rotary capstan 7 having sponge belts 8. Gaseous raw material of glass, oxygen, hydrogen, etc. are supplied to a burner 2 and are ignited by the burner so that a soot material 1 is deposited on the tip of the material 10. The material 10 is rotated in an arrow B direction and the belts 8 are driven in an arrow A direction to pull up the material 10 in synchronization with the growth of the body 1 in the longitudinal direction thereof. After the material 10 passed through the capstan 7, the material 10 is cut away and further the soot body 1 is pulled up and is cut and taken out by a blade 9 at every desired length. The cut soot body is sintered in a sintering furnace.

4. 发明专利

JPS5629206A LIGHT COUPLING DEVICE 失效
公开(公告)号：JPS5629206A
公开(公告)日：1981-03-24
申请号：JP10493079
申请日：1979-08-20
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TODA YUUICHI , SAKAMOTO KATSUJI , YANO KOUJI
IPC分类号： G02B6/24 , B65H75/34 , G02B6/255 , G02B6/26 , G02B6/44 , H02G11/02
摘要： PURPOSE:To active higher reliability on the light-coupling effect and embody construction of compact light-coupling device, by winding the optical fibers branched from the optical cable upon the dummy bobbins conncted to the same shaft with the revolving unit, whereupon multicored optical cable with its top end connected to the moving units are wound, and coupling said branched optical fibers with the stationary terminal units through pinch rollers and bundling device. CONSTITUTION:The top end of optical fibers is coupled with the moving unit 3, while the rear end is wound upon the revolving unit 1, then said fibers enter the revolving shaft 5a of said revolving unit 1, where said fibers are branched into dummy fibers having either single core or several cores, then, said branched fibers are respectively wound upon the dummy bobbins 16, 16a, and 16b, through the revolving shaft 5a, and pass through the pinch rollers 52, 52a, and 52b, and the bundling device 54, 54a, and 54b, before being coupled with the stationary terminal units 61, 61a, and 16b, respectively. The revolving unit 1 and the dummy bobbins 16, 16a, and 16b are revolved through the pulleys 35 and 37 and the belt 36 by the motor 38. Revolution is also carried on against the tension of the pinch rollers 52-52b. Thus, reliability on the light-coupling effect is improved, enabling the construction to embody a compact light-coupling device.

5. 发明专利

JPS5996054A TRAVELLING MACHINE IN DUCT 失效
公开(公告)号：JPS5996054A
公开(公告)日：1984-06-02
申请号：JP20641682
申请日：1982-11-24
申请人： SUMITOMO GENSHIRIYOKU KOGYO KK , SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKAGI KATSUHIRO , KATOU KAZUO , MATSUBARA TAKEO , IHARA SUSUMU , YANO KOUJI
IPC分类号： B61B13/10

6. 发明专利

JPS6046941A PREPARATION OF PREFORM FOR OPTICAL FIBER 失效
公开(公告)号：JPS6046941A
公开(公告)日：1985-03-14
申请号：JP15420983
申请日：1983-08-25
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YANO KOUJI , WATANABE MINORU , KIYOUDOU TSUNEHISA , HOSHIKAWA MASAO
IPC分类号： C03B37/018 , C03B37/014 , C03B37/12 , G02B6/00
摘要： PURPOSE:To obtain the titled preform having low transmission loss near at 1.52mum, by hydrolyzing a glass raw material containing a P compound with flame to give a porous glass parent material, vaporizing the P component during sintering of the parent material. CONSTITUTION:A raw material for glass containing 0.01-1mol% P compound (e.g., POCl3) and a combustion gas are jetted from a burner, the raw material for glass is subjected to flame hydrolysis in the combustion gas, and fine particles of glass are piled to give a porous glass parent material. The parent material is then fed to a sintering furnace having 1-20l/min flow rate of He. As P is vaporized at wt% P. Consequently, control of dopant distribution is made easy, and the sintering temperature can be lowered.

7. 发明专利

JPS5629205A LIGHT COUPLING DEVICE 失效
公开(公告)号：JPS5629205A
公开(公告)日：1981-03-24
申请号：JP10492979
申请日：1979-08-20
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TODA YUUICHI , SAKAMOTO KATSUJI , YANO KOUJI
IPC分类号： G02B6/24 , G02B6/26 , G02B6/36 , G02B6/44
摘要： PURPOSE:To accomplish construction of a compact light-coupling device, by connecting the top end of optical cable wound upon the revolving units to moving units, with the rear end being led into revolving units, winding optical fibers branched from the optical cable upon the dummy bobbins which are jointly revolving coaxially with said revolving units, and connecting said rear end to the stationary terminal unit through bobbins connected to respectively different shafts. CONSTITUTION:For example, the optical cable 2 having five cores connected to the sea-bottom explorer 3, is wound upon the revolving unit 1, and said cable 2 enters into said revolving unit 1 through the passage hole 1a, and the two pieces branched into the optical fibers 2a respectively arrive at the revolving joints 5a, 5b, while the other 3 pieces are respectively wound upon the dummy bobbins 15x-15z, and then arrive at the revolving joints 5x-5z, through the 3 bobbins 18x-19z, having differet shafts each, and then connected to the stationary terminal units 8a, 8b, 8x-8z, respectively. The revolving unit 1 is revolved by the motor 12 through the pulleys 11, 13 and the belt 14, and the bobbins 18x-18z are revolved by the belts 21x-21z, respectively. Thus, said moving units are connected to said stationary terminal units without any obstacle, enabling compactification of the device.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式