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21. 发明授权

US06306500B1 Porous optical fiber base materials, optical fiber base materials and methods for producing them 有权
标题翻译：多孔光纤基材，光纤基材及其制造方法
公开(公告)号：US06306500B1
公开(公告)日：2001-10-23
申请号：US09362358
申请日：1999-07-28
申请人： Haruyoshi Kuwabara , Tadakatsu Shimada , Hideo Hirasawa
发明人： Haruyoshi Kuwabara , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： D02G300
CPC分类号： C03B37/0142 , C03B37/01413 , C03B37/01486 , C03B37/01493 , C03B2201/21 , C03B2201/23 , C03B2207/36 , Y10T428/2927 , Y10T428/2933 , Y10T428/2964
摘要： There is disclosed a method for producing a porous optical fiber base material comprising depositing fine glass powder on a rotating member, wherein pore size of the deposited fine glass powder is controlled, and preferably, mode of the pore size is controlled to be 0.1 to 1 &mgr;m, or wherein a total amount of absorbed H2O amount and OH group amount on the fine glass powder per square meter of fine glass powder surface area is controlled to be 3.5×10−5 to 7.5×10−5 g. Such porous optical fiber base materials have an improved weight of fine glass powder deposited on the member per batch, or an improved fine glass powder deposit efficiency, which may greatly contribute to improvement of production ability and reduction of production cost. Further, there is disclosed a method for producing a porous optical fiber base material comprising depositing fine glass powder on a rotating member, wherein, as for the deposited fine glass powder, pore volume of pores having a pore size of 10 &mgr;m or more is controlled to be 1% by volume or less relative to the total pore volume. Such a porous optical fiber base material can markedly decrease air bubbles in an optical fiber base material after the fusion vitrification.
摘要翻译：公开了一种多孔光纤基材的制造方法，其特征在于，在旋转部件上配置微细的玻璃粉末，其特征在于，控制所述沉积的微细玻璃粉末的孔径，优选将所述孔径控制为0.1〜1 妈妈，或其中每平方米细玻璃粉末表面积的细玻璃粉末上的吸收的H 2 O量和OH基量的总量控制在3.5×10-5至7.5×10-5g。这种多孔光纤基材具有改善的沉积在每批次的部件上的细微玻璃粉末的重量，或改善的细玻璃粉末沉积效率，这可能极大地有助于提高生产能力和降低生产成本。此外，公开了一种多孔光纤基材的制造方法，其特征在于，在旋转部件上配置微细的玻璃粉末，其中，对于沉积的微细玻璃粉末，控制孔径为10μm以上的孔的细孔容积相对于总孔体积为1体积％以下。这种多孔光纤基材在熔融玻璃化之后可以显着地减少光纤基材中的气泡。

22. 发明授权

US6134922A Method for drawing a glass ingot 失效
标题翻译：绘制玻璃锭的方法
公开(公告)号：US6134922A
公开(公告)日：2000-10-24
申请号：US100318
申请日：1998-06-19
申请人： Tadakatsu Shimada , Hideo Hirasawa
发明人： Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B23/047 , C03B37/012 , C03B37/014 , C03B37/029 , C03B37/07 , C03B5/235 , C03B37/025 , C03B37/10
CPC分类号： C03B37/01466 , C03B23/047 , C03B37/01205 , C03B37/0124 , C03B37/01257 , C03B37/01486 , C03B37/029
摘要： A method for drawing a glass ingot into a rod having a given outer diameter is described. The method is characterized in that when the glass ingot is fed into a heating zone at a final tapered portion thereof, a temperature in the heating zone is decreased so that the final tapered portion is prevented from being drawn in excess owing to the heat from the heating zone.
摘要翻译：描述了将玻璃锭拉制成具有给定外径的棒的方法。该方法的特征在于，当玻璃锭在其最终锥形部分被供给到加热区域中时，加热区域中的温度降低，使得最终锥形部分被防止由于来自加热区。

23. 发明授权

US06467311B1 Double flame polishing method for fiber preforms 有权
标题翻译：光纤预制棒的双火焰抛光方法
公开(公告)号：US06467311B1
公开(公告)日：2002-10-22
申请号：US09487342
申请日：2000-01-19
申请人： Hideki Fujii , Takaaki Nagao , Shoji Hoshino , Tadakatsu Shimada , Hideo Hirasawa
发明人： Hideki Fujii , Takaaki Nagao , Shoji Hoshino , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B37023
CPC分类号： C03B29/02 , C03B37/01237
摘要： The optical fiber base material heat treatment method can be provided that the first flame polishing heats the surface of the optical fiber base material (106) with fixing a length of the optical fiber base material (106) and the second flame polishing heats the surface of the optical fiber base material (106) by lower temperature than the temperature of the heating of the first flame polishing.
摘要翻译：可以提供光纤基材热处理方法，即第一火焰抛光通过固定光纤基材（106）的长度来加热光纤基材（106）的表面，并且第二火焰抛光加热了光纤基材所述光纤基材（106）的温度比所述第一次火焰抛光的加热温度低。

24. 发明授权

US06442978B1 Apparatus for sintering a porous glass base material and a method therefor 有权
标题翻译：用于烧结多孔玻璃基材的设备及其方法
公开(公告)号：US06442978B1
公开(公告)日：2002-09-03
申请号：US09520966
申请日：2000-03-08
申请人： Takeshi Kamio , Hiroyuki Koide , Hiroshi Tsumura , Tadakatsu Shimada , Hideo Hirasawa
发明人： Takeshi Kamio , Hiroyuki Koide , Hiroshi Tsumura , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B3707
CPC分类号： C03B37/0146 , C03B37/01446 , Y02P40/57
摘要： Apparatus (700) for sintering a glass base material (2) which is a base material for an optical fiber. The sintering apparatus (700) includes: a control unit which varies a condition for sintering the glass base material; and a furnace (12) which sinters the glass base material by heating the glass base material in an atmosphere of dehydration gas and inert gas. The control unit includes a drive source (3) which supplies the glass base material to the furnace at various speeds. The control unit includes a temperature control unit which controls the temperature of a heating source provided in the furnace.
摘要翻译：用于烧结作为光纤基材的玻璃基材（2）的设备（700）。烧结装置（700）包括：控制单元，其改变用于烧结玻璃基材的状态; 以及通过在脱水气体和惰性气体的气氛中加热玻璃基材来烧结玻璃基材的炉（12）。控制单元包括以各种速度将玻璃基材供应到炉的驱动源（3）。控制单元包括控制设置在炉中的加热源的温度的温度控制单元。

25. 发明授权

US06354112B2 Method of depositing glass soot with controlling reaction chamber humidity to prevent accumulation of excess soot 有权
标题翻译：沉积玻璃烟灰并控制反应室湿度以防止过量烟灰积聚的方法
公开(公告)号：US06354112B2
公开(公告)日：2002-03-12
申请号：US09204125
申请日：1998-12-02
申请人： Yasuhiro Nakashima , Tadakatsu Shimada , Hideo Hirasawa
发明人： Yasuhiro Nakashima , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B37018
CPC分类号： C03B37/01406
摘要： A method and apparatus for producing a glass base material for an optical fiber. A material for an optical fiber and a reaction gas are jetted from a burner connected to a material line and a gas line toward a surface of a quartz substrate, in order to deposit a soot-like reaction product on the substrate at a predetermined position to thereby produce a glass base material for an optical fiber. Dry air is introduced into a reaction container in an amount of 4 to 8 times the amount of water vapor that is generated due to flame hydrolysis during the reaction. Therefore, it is possible to reliably solve the problem that the interior of the reaction container is excessively dried, with the result that soot generated through a reaction adheres to and aggregates on the wall surface of the reaction container due to static electricity, and the problem that the amount of water vapor becomes excessive and is condensed on the wall surface, with the result that soot strongly adheres to the wall surface, while the observation window or the like becomes fogged. Further, soot peeled off the wall surface is prevented from adhering to or melting into the side surface or base portion of a pre-form being pulled, so that the quality of products is improved, and stable operation becomes possible.
摘要翻译：一种用于制造光纤用玻璃基材的方法和装置。将用于光纤和反应气体的材料从连接到材料线和气体管线的燃烧器朝向石英基板的表面喷射，以便将预定位置的基材上的烟灰状反应产物沉积到从而制造用于光纤的玻璃基材。干燥空气以反应中由于火焰水解产生的水蒸汽量的4至8倍的量引入反应容器中。因此，能够可靠地解决反应容器的内部过度干燥的问题，结果是由反应容器产生的烟灰由于静电而附着在反应容器的壁面上并聚集在反应容器的壁面上，水蒸汽的量变得过量并且在壁表面上被冷凝，结果是烟灰强烈地粘附到壁表面，同时观察窗等变得雾化。此外，防止从壁面剥离的烟灰粘附或熔化到被拉伸的预成型体的侧面或基部，从而提高产品的质量，并且可以稳定地操作。

26. 发明授权

US06988382B2 Method for manufacturing glass-base-material by measuring the weight of the material 有权
标题翻译：通过测量材料的重量制造玻璃基材料的方法
公开(公告)号：US06988382B2
公开(公告)日：2006-01-24
申请号：US10973236
申请日：2004-10-27
申请人： Junichiro Takei , Tadakatsu Shimada , Hideo Hirasawa
发明人： Junichiro Takei , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B37/04
CPC分类号： C03B37/01486
摘要： An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which is driven by the driving unit, to form the glass-base-material; a weight-deducting unit, on which the driving unit is mounted, for deducting a predetermined weight from a total weight of the driving unit and the glass-base-material formed by the burner; and a measuring unit provided under the weight-deducting unit for measuring the total weight, from which the predetermined weight is deducted by the weight-deducting unit.
摘要翻译：作为光纤的基材的玻璃基材的制造装置，具有驱动单元，该驱动单元驱动围绕玻璃棒的轴线的玻璃棒; 用于在由驱动单元驱动的玻璃棒的外表面周围积聚玻璃烟灰以形成玻璃基材的燃烧器; 减重单元，其上安装有驱动单元，用于从驱动单元的总重量和由燃烧器形成的玻璃基材料中扣除预定重量; 以及测量单元，设置在所述减重单元下方，用于测量所述总重量，由所述减重单元从所述总重量中扣除所述预定重量。

27. 发明申请

US20050210925A1 APPARATUS FOR FABRICATING SOOT PREFORM FOR OPTICAL FIBER 有权
标题翻译：用于制造光纤的预制件的装置
公开(公告)号：US20050210925A1
公开(公告)日：2005-09-29
申请号：US10698657
申请日：2003-10-31
申请人： Dai Inoue , Go Ogino , Tetsuya Otosaka , Tadakatsu Shimada , Hideo Hirasawa
发明人： Dai Inoue , Go Ogino , Tetsuya Otosaka , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018
CPC分类号： C03B37/01406 , C03B2207/54
摘要： An apparatus for fabricating a soot preform for an optical fiber. The soot preform is fabricated by depositing glass particles on a starting rod capable of being rotated and pulled up. The apparatus comprises elements as follows. A reaction chamber is used for depositing the glass particles on the starting rod. An upper room is located above the reaction chamber for receiving the soot preform formed in the upper portion of the reaction chamber. At least one core burner is installed in the reaction chamber. A gas-supplying inlet is located in the top part of the sidewall of the reaction chamber closest to burner(s), and a gas-exhausting outlet is located in the top part of another sidewall opposite to the gas-supplying inlet. In addition, at least one cladding burner is installed in the reaction chamber. Thus, the exhausting efficiency for the stray glass particles is increased and the bubbles and impurities in the resulting preform are reduced such that the optical property in the lengthwise direction is stable.
摘要翻译：一种用于制造用于光纤的烟灰预制件的设备。烟炱预制件通过将玻璃颗粒沉积在能够旋转和拉起的起始杆上来制造。该装置包括以下元件。反应室用于将玻璃颗粒沉积在起始杆上。上部房间位于反应室上方，用于接收形成在反应室上部的烟灰预制件。至少一个核燃烧器安装在反应室中。气体供给入口位于最接近燃烧器的反应室的侧壁的顶部，并且排气出口位于与气体供应入口相对的另一个侧壁的顶部。此外，至少一个包层燃烧器安装在反应室中。因此，杂散玻璃颗粒的排气效率增加，并且所得预成型体中的气泡和杂质减少，使得长度方向的光学性质稳定。

28. 发明授权

US06941772B2 Apparatus and method for manufacturing glass-base-material 失效
标题翻译：玻璃基材制造装置及方法
公开(公告)号：US06941772B2
公开(公告)日：2005-09-13
申请号：US10188863
申请日：2002-07-05
申请人： Junichiro Takei , Tadakatsu Shimada , Hideo Hirasawa
发明人： Junichiro Takei , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018 , C03B37/07
CPC分类号： C03B37/01486
摘要： An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which is driven by the driving unit, to form the glass-base-material; a weight-deducting unit, on which the driving unit is mounted, for deducting a predetermined weight from a total weight of the driving unit and the glass-base-material formed by the burner; and a measuring unit provided under the weight-deducting unit for measuring the total weight, from which the predetermined weight is deducted by the weight-deducting unit.
摘要翻译：作为光纤的基材的玻璃基材的制造装置，具有驱动单元，该驱动单元驱动围绕玻璃棒的轴线的玻璃棒; 用于在由驱动单元驱动的玻璃棒的外表面周围积聚玻璃烟灰以形成玻璃基材的燃烧器; 减重单元，其上安装有驱动单元，用于从驱动单元的总重量和由燃烧器形成的玻璃基材料中扣除预定重量; 以及测量单元，设置在所述减重单元下方，用于测量所述总重量，由所述减重单元从所述总重量中扣除所述预定重量。

29. 发明授权

US07093412B1 Glass base material packing method 失效
标题翻译：玻璃基材包装方法
公开(公告)号：US07093412B1
公开(公告)日：2006-08-22
申请号：US09512276
申请日：2000-02-24
申请人： Takaaki Nagao , Tadakatsu Shimada , Hideo Hirasawa
发明人： Takaaki Nagao , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： B65B11/58 , B65D85/20
CPC分类号： C03B37/01202 , B65D77/02 , B65D81/03 , B65D85/20 , B65D85/30
摘要： A method of packing a glass base material (10, 20, 30), which is a base material of an optical fiber comprising packing the glass base material (10, 20, 30) into a cylindrical container (16, 26, 36). The packing has: putting the glass base material (10, 20, 30) into a plastic bag (12, 22, 32); and packing the glass base material (10, 20, 30), which is put into the plastic bag (12, 22, 32), into the cylindrical container (16, 26, 36). The packing further has: wrapping the glass base material (10, 20, 30), which is put into the plastic bag (12, 22, 32), with air packing material (14, 24, 34), which contains air inside; and packing the glass base material (10, 20, 30) wrapped with the air packing material (14, 24, 34) into the cylindrical container (16, 26, 36).
摘要翻译：一种包装玻璃基材（10,20,30）的方法，所述玻璃基材（10,20,30）是将所述玻璃基材（10,20,30）包装成圆柱形容器（16,26,36）的光纤的基材。包装有：将玻璃基材（10,20,30）放入塑料袋（12,22,32）中; 并将放入塑料袋（12,22,32）中的玻璃基材（10,20,30）包装到圆筒形容器（16,26,36）中。该包装还包括：将包含空气的空气包装材料（14,24,34）包裹在塑料袋（12,22,32）中的玻璃基材（10,20,30）; 并将用空气包装材料（14,24,34）包裹的玻璃基材（10,20,30）包装到圆筒形容器（16,26,36）中。

30. 发明授权

US07082791B2 Apparatus for fabricating soot preform for optical fiber 有权
公开(公告)号：US07082791B2
公开(公告)日：2006-08-01
申请号：US10698657
申请日：2003-10-31
申请人： Dai Inoue , Go Ogino , Tetsuya Otosaka , Tadakatsu Shimada , Hideo Hirasawa
发明人： Dai Inoue , Go Ogino , Tetsuya Otosaka , Tadakatsu Shimada , Hideo Hirasawa
IPC分类号： C03B37/018
CPC分类号： C03B37/01406 , C03B2207/54
摘要： An apparatus for fabricating a soot preform for an optical fiber. The soot preform is fabricated by depositing glass particles on a starting rod capable of being rotated and pulled up. The apparatus comprises elements as follows. A reaction chamber is used for depositing the glass particles on the starting rod. An upper room is located above the reaction chamber for receiving the soot preform formed in the upper portion of the reaction chamber. At least one core burner is installed in the reaction chamber. A gas-supplying inlet is located in the top part of the sidewall of the reaction chamber closest to burner(s), and a gas-exhausting outlet is located in the top part of another sidewall opposite to the gas-supplying inlet. In addition, at least one cladding burner is installed in the reaction chamber. Thus, the exhausting efficiency for the stray glass particles is increased and the bubbles and impurities in the resulting preform are reduced such that the optical property in the lengthwise direction is stable.

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