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1. 发明授权

US5974838A Optical fiber graphite furnace featuring an automatic shutter door system for feeding an optical preform 失效
标题翻译：光纤石墨炉具有自动快门门系统，用于馈送光学预制棒
公开(公告)号：US5974838A
公开(公告)日：1999-11-02
申请号：US111234
申请日：1998-07-07
申请人： Daniel D. Uhm , Robert A. Spencer
发明人： Daniel D. Uhm , Robert A. Spencer
IPC分类号： C03B37/025 , C03B37/027 , C03B37/029 , C03B37/07
CPC分类号： C03B37/02736 , C03B37/0253 , C03B37/029 , C03B2205/80 , C03B2205/81 , C03B2205/82 , C03B2205/83
摘要： An optical fiber furnace having an access port for a preform is disclosed. The access port includes a gas pressure generation and sensing device and an automatic shutter door assembly. The gas pressure generation and sensing device responds to a sensed gas pressure built up around a new preform being inserted into the optical fiber furnace, for providing an automatic shutter door opening signal. The gas pressure generation and sensing device also responds to a sensed outwardly flowing purge gas pressure escaping around an exhausted preform being removed from the optical fiber furnace, for providing an automatic shutter door closing signal. The automatic shutter door assembly responds to the automatic shutter door opening signal, for opening the automatic shutter door assembly for inserting the new preform into the optical fiber furnace. The automatic shutter door assembly also responds to the automatic shutter door closing signal, for closing the automatic shutter door assembly after removing the exhausted preform from the optical fiber furnace.
摘要翻译：公开了一种具有用于预制件的入口的光纤炉。进入端口包括气体压力产生和感测装置和自动快门门组件。气体压力产生和感测装置响应于被插入到光纤炉中的新预型件周围形成的感测气体压力，以提供自动快门开门信号。气体压力产生和感测装置还响应于从光纤炉除去的排出的预制件周围逃逸的感测向外流动的净化气体压力，以提供自动快门门关闭信号。自动快门门组件响应于自动快门门打开信号，用于打开自动快门门组件以将新预成型件插入光纤炉中。自动快门门组件还响应于自动快门门关闭信号，用于在从光纤炉中去除耗尽的预成型件之后关闭自动快门门组件。

2. 发明授权

US06232583B1 Infrared high temperature measurement of optical fiber during draw 失效
标题翻译：绘制期间光纤的红外高温测量
公开(公告)号：US06232583B1
公开(公告)日：2001-05-15
申请号：US09377995
申请日：1999-08-20
申请人： Daniel D. Uhm
发明人： Daniel D. Uhm
IPC分类号： H05B102
CPC分类号： G01J5/0022 , C03B37/0253 , C03B37/029 , G01J5/0862 , G01J2005/0081
摘要： A fiber draw furnace for drawing a fiber from a preform has a thermographic sensor in combination with a thermographic profiling processor. The thermographic sensor responds to infrared energy radiating from the fiber, for providing a thermographic sensor signal containing information about the infrared energy radiating from the fiber. The thermographic profiling processor responds to the thermographic sensor signal, for providing a thermographic profiling processor signal containing information about a thermographic profile of variations in the heat emitted across the width or along the length of the fiber. The fiber is typically quartz glass. The thermographic sensor includes an infrared filter and lens combination for filtering out infrared energy outside a range of 8-12 microns radiating from the quartz fiber. The thermographic sensor includes a lens and an infrared sensor for focusing and sensing infrared energy inside a range of 8-12 microns radiating from the quartz fiber. The quartz fiber typically has a temperature in a range of 500 to 2,000 degrees Celsius. The thermographic sensor signal contains information about the infrared energy radiating from the quartz fiber in a temperature range of 500 to 2,000 degrees Celsius.
摘要翻译：用于从预制件拉制纤维的纤维拉制炉具有与热成像分析处理器组合的热成像传感器。热成像传感器响应从光纤辐射的红外能量，用于提供含有关于从光纤辐射的红外能量的信息的热成像传感器信号。热成像分析处理器响应于热成像传感器信号，用于提供热成像分析处理器信号，该信号包含关于在光纤的宽度或长度上发射的热量变化的热成像分布的信息。纤维通常是石英玻璃。热成像传感器包括红外滤光器和透镜组合，用于滤除从石英光纤辐射的8-12微米范围外的红外能量。热成像传感器包括透镜和红外传感器，用于聚焦和感测从石英光纤辐射的8-12微米范围内的红外能量。石英纤维通常具有在500至2000摄氏度范围内的温度。热成像传感器信号包含有关在500至2000摄氏度的温度范围内从石英光纤辐射的红外能量的信息。

3. 发明授权

US6044663A Impregnated vitreous (glassy) carbon graphite liner and heating element for a fiber optic draw furnace 失效
标题翻译：浸渍玻璃质（玻璃状）碳素石墨衬垫和用于光纤拉丝炉的加热元件
公开(公告)号：US6044663A
公开(公告)日：2000-04-04
申请号：US47865
申请日：1998-03-25
申请人： Daniel D. Uhm , Robert A. Spencer
发明人： Daniel D. Uhm , Robert A. Spencer
IPC分类号： G02B6/00 , C03B37/027 , C03B37/029 , F27B1/14 , H05B3/03 , H05B3/62 , C03B13/16
CPC分类号： C03B37/029 , H05B3/03 , H05B3/62 , C03B2205/63 , C03B2205/70
摘要： The present invention provides an improvement to a fiber optic draw furnace for drawing an optical fiber from a preform. The fiber optic draw furnace has a heating element having a shape for enclosing and heating the preform, and has a graphite liner having a corresponding shape to the shape of the heating element for providing a barrier between the heating element and the preform. In the fiber optic draw furnace, either the graphite liner is a high density extruded graphite liner that is impregnated with vitreous carbon completely through its entire graphite liner matrix, or the heating element is a high density extruded graphite heating element that is impregnated with vitreous carbon completely through its entire graphite heating element matrix, or both.
摘要翻译：本发明提供了一种用于从预成型件拉制光纤的光纤拉制炉的改进。光纤拉制炉具有用于封闭和加热预成型件的形状的加热元件，并且具有与加热元件的形状相对应的形状的石墨衬垫，用于在加热元件和预型件之间提供阻挡层。在光纤拉制炉中，石墨衬垫是高密度挤压石墨衬垫，其通过其整个石墨衬垫基体完全浸透玻璃碳，或者加热元件是用玻璃碳浸渍的高密度挤压石墨加热元件完全通过其整个石墨加热元件基体，或两者。

4. 发明授权

US06354113B2 Fiber optic draw furnace featuring a fiber optic preform heating and fiber drawing programmable logic controller 有权
标题翻译：光纤拉丝炉具有光纤预制件加热和光纤绘制可编程逻辑控制器
公开(公告)号：US06354113B2
公开(公告)日：2002-03-12
申请号：US09233816
申请日：1999-01-20
申请人： Daniel D. Uhm
发明人： Daniel D. Uhm
IPC分类号： C03B37029
CPC分类号： C03B37/0253 , C03B2205/40 , C03B2205/72
摘要： The present invention provides a fiber optic draw furnace having a fiber optic heating and draw control system that controls the heating of a fiber optic preform which is partially melted by a furnace and the drawing of an optical fiber from the fiber optic preform by a fiber drawing device. The fiber optic heating and draw control system features a fiber optic heating and drawing device controller that responds to a furnace power consumption control signal from a fiber optic preform heating device in the furnace, for providing a furnace heating control signal to the fiber optic preform heating device in the furnace and a fiber tension draw control signal to the fiber drawing device to maintain a desired fiber draw tension on the optical fiber. In one embodiment, the fiber optic heating and drawing device controller is a programmable logic controller. One advantage of the present invention is that it eliminates the need for an optical pyrometer port, which results in a symmetrical temperature profile around the circumference of the preform and also helps eliminate induced stresses that can cause defects in an optical fiber.
摘要翻译：本发明提供了一种光纤拉制炉，其具有光纤加热和拉制控制系统，该系统控制由炉子部分熔化的光纤预制件的加热，以及通过光纤拉丝从光纤预制件拉制光纤设备。光纤加热和绘图控制系统具有光纤加热和绘图装置控制器，其响应来自炉中的光纤预制件加热装置的炉子功率消耗控制信号，用于向光纤预制件加热提供炉加热控制信号炉中的装置和纤维拉伸控制信号到纤维拉伸装置以保持光纤上所需的纤维拉伸张力。在一个实施例中，光纤加热和拉制装置控制器是可编程逻辑控制器。本发明的一个优点是它消除了对光学高温计端口的需要，这导致围绕预成型件的圆周的对称的温度曲线，并且还有助于消除可能导致光纤中的缺陷的引起的应力。

5. 发明授权

US06257023B1 Fiber optic draw furnace having a heating element and a furnace shell, featuring rigidified high purity graphite felt insulation therebetween 失效
标题翻译：具有加热元件和炉壳的光纤拉制炉，其间具有硬化的高纯度石墨毡
公开(公告)号：US06257023B1
公开(公告)日：2001-07-10
申请号：US09047864
申请日：1998-03-25
申请人： Daniel D. Uhm , Robert A. Spencer
发明人： Daniel D. Uhm , Robert A. Spencer
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , C03B2205/70 , H05B3/03 , H05B3/62
摘要： The present invention provides an improvement to a fiber optic draw furnace having a heating element (22) arranged inside a furnace shell (20) for drawing an optical fiber (F) from a preform (P). The fiber optic draw furnace (10) has one or more pieces of fiber draw furnace insulation (14, 16, 18) to separate the heating element (22) from the furnace shell (20) for reducing the thermal transfer therebetween. At least one of the pieces of fiber draw furnace insulation (14, 16, 18) is made from rigidified high purity graphite felt that provides highly efficient thermal insulation between the heating element (22) and the outer furnace shell (20). The rigidified high purity graphite felt insulation (14), (16, 18) includes either a bottom insulation ring (14), a cylindrical insulation insert (16) or a cylindrical insulation canister (18).
摘要翻译：本发明提供一种具有设置在炉壳（20）内的用于从预成型件（P）拉出光纤（F）的加热元件（22）的光纤拉制炉的改进。光纤拉制炉（10）具有一个或多个纤维拉制炉绝缘体（14,16,18），以将加热元件（22）与炉壳（20）分开，以减少它们之间的热传递。纤维拉制炉绝缘体（14,16,18）中的至少一个由刚性高纯度石墨毡制成，其在加热元件（22）和外炉壳（20）之间提供高效的热绝缘。刚性化的高纯度石墨毡绝缘体（14）（16,18）包括底部绝缘环（14），圆柱形绝缘插入件（16）或圆柱形绝缘罐（18）。

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