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公开(公告)号：US5703988A
公开(公告)日：1997-12-30
申请号：US687497
申请日：1996-08-06
CPC分类号： G01M11/088 , C03C25/12 , G02B6/02395
摘要： A coated optical fiber comprising a light-transmitting fiber and a resin coating layer disposed on the outer periphery of the light-transmitting fiber is formed, an external flaw is imparted to the surface of the resin coating layer while running the coated optical fiber, and then the coated optical fiber is subjected to the measurement of a tensile breaking strength thereof. At this time, the fiber having a strength retention ratio R.sub.S =S.sub.A /S.sub.0 of 0.98 or more, wherein S.sub.A is the median value of the tensile breaking strength after the provision of the external flaw, and S.sub.0 is the median value of the tensile breaking strength before the provision of the external flaw, is selected as a non-defective product. By using the above process for fabricating a coated optical fiber, it is possible to reduce both of the length and measuring period of time required for the evaluation of the external flaw resistance thereof, and to obtain a coated optical fiber having good characteristics while quantitatively evaluating the external flaw resistance of the fiber.
摘要翻译： PCT No.PCT / JP95 / 00207 Sec。 371日期：1996年8月6日 102（e）日期1996年8月6日PCT提交1995年2月14日PCT公布。 公开号WO95 / 21800 日期1995年8月17日形成包含透光性纤维和设置在透光性纤维的外周的树脂被覆层的涂布光纤，在树脂被覆层的表面行进时，施加外部缺陷 涂布光纤，然后对涂覆的光纤进行拉伸断裂强度的测定。 此时，强度保持率RS = SA / S0为0.98以上的纤维，其中SA为提供外部缺陷后的拉伸断裂强度的中值，S0为拉伸断裂的中值 在提供外部缺陷之前的强度被选为无缺陷产品。 通过使用上述制造涂布光纤的方法，可以减少评估其外部抗瑕疵性所需的长度和测量时间段，并且获得具有良好特性的涂层光纤，同时定量评估 纤维的外部抗瑕疵。
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12.发明授权
公开(公告)号：US5614253A
公开(公告)日：1997-03-25
申请号：US381875
申请日：1995-02-16
CPC分类号： G02B6/02038 , B29C47/0023 , B29D11/00721 , G02B1/045 , G02B1/048 , B29C47/00 , B29C47/0014 , Y10T428/2929 , Y10T428/2942 , Y10T428/2947
摘要： A process for producing a preform for plastic optical fiber having a refractive index distribution in which the refractive index is gradually decreased from the center of the preform toward the outer periphery thereof, by depositing a deposition layer comprising a polymer A (refractive index: N.sub.a) and a refractive index modifier having a refractive index different from that of the polymer A onto an inner surface of a hollow cylindrical member rotating about an axis thereof, by use of vapor-phase deposition based on a CVD (Chemical Vapor Deposition) process, or a coating process. A plastic optical fiber preform comprising deposition layers having a gradually increasing refractive index distribution is formed by changing the mixing ratio between the polymer A and the refractive index modifier constituting the deposition layer.
摘要翻译： PCT No.PCT / JP94 / 00963 Sec。 371日期1995年2月16日 102（e）日期1995年2月16日PCT提交1994年6月14日PCT公布。 公开号WO94 / 29758 日期1994年12月22日一种用于制造具有折射率分布的塑料光纤预成型体的方法，其中折射率从预成型体的中心朝向其外周逐渐减小，通过沉积包含聚合物A的沉积层（ 折射率：Na）和折射率调节剂，其折射率与聚合物A的折射率不同，通过使用基于CVD的气相沉积（化学气相色谱法）在围绕其轴线旋转的中空圆柱形构件的内表面上 沉积）工艺或涂层工艺。 通过改变构成沉积层的聚合物A和折射率调节剂之间的混合比，形成包含逐渐增加的折射率分布的沉积层的塑料光纤预制件。
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公开(公告)号：US5057721A
公开(公告)日：1991-10-15
申请号：US540269
申请日：1990-06-19
申请人： Hideki Miyazaki , Akihiko Kanouda , Kozo Watanabe , Kenichi Onda , Yasuo Matsuda
发明人： Hideki Miyazaki , Akihiko Kanouda , Kozo Watanabe , Kenichi Onda , Yasuo Matsuda
IPC分类号： H01L21/8234 , G05F3/24 , H01L27/088 , H03K5/02 , H03K17/04
CPC分类号： G05F3/24
摘要： The switching of the positive (or pullup power) and negative (or pulldown power) semiconductor elements, are controlled by driving circuits which are in turn controlled by level shift circuits which have a first current control circuit and a second current control circuit coupled in parallel and this parallel connection is coupled in series with the control N-channel MOSFET of a current mirror circuit in a circuit loop arrangement with a control power supply. The first and second current control circuits are responsive to first and second control pulses of pulse widths t.sub.1 and t.sub.1 +t.sub.2, in accordance with a driving signal such that the first current control circuit supplies a first current level to the control N-channel MOSFET during the first time period t.sub.1 and the second current control circuit supplies a second current level, smaller than that of the first current level, thereto for a predetermined time period t.sub.1 +t.sub.2 thereby resulting in a current flow through the controlled N-channel MOSFET of the current mirror circuit of a current value corresponding to the sum of the first and second current levels. The controlled N-channel MOSFET, providing ON/OFF control of a P channel MOSFET, is disposed in a second circuit loop which is powered by a high voltage power supply. This P-channel MOSFET, coupled to the high voltage power supply, supplies an output signal to a load in response to the current flowing through the controlled N-channel MOSFET.
摘要翻译： 正（或上拉功率）和负（或下拉功率）半导体元件的切换由驱动电路控制，驱动电路又由具有并联耦合的第一电流控制电路和第二电流控制电路的电平移位电路控制 并联电路与电流反射镜电路的控制N沟道MOSFET串联，并与控制电源进行电路回路布置。 第一和第二电流控制电路根据驱动信号响应脉冲宽度t1和t1 + t2的第一和第二控制脉冲，使得第一电流控制电路在控制N沟道MOSFET期间向控制N沟道MOSFET提供第一电流电平 第一时间段t1和第二电流控制电路提供比第一电流电平小的第二电流电平达预定时间段t1 + t2，从而导致电流流过控制的N沟道MOSFET的电流 电流镜像电路，其电流值对应于第一和第二电流电平的和。 提供P沟道MOSFET的ON / OFF控制的受控N沟道MOSFET设置在由高压电源供电的第二电路回路中。 耦合到高压电源的P沟道MOSFET响应于流过受控N沟道MOSFET的电流向负载提供输出信号。
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公开(公告)号：US4568838A
公开(公告)日：1986-02-04
申请号：US750229
申请日：1985-06-28
申请人： Kazuo Honda , Yasuo Matsuda , Shuji Musha
发明人： Kazuo Honda , Yasuo Matsuda , Shuji Musha
IPC分类号： H04B1/74 , H03K17/16 , H03K19/003 , H03K19/0175 , H03K19/14 , H04L25/02 , H03K17/60 , H03K3/42
CPC分类号： H03K17/16
摘要： A control circuit for a semiconductor element with a control electrode includes a signal transmission circuit, in which two switching elements made conductive when a control signal is supplied from a control signal source to the switching elements through a signal insulating element, are provided so that the control signal is transferred to a turn-on circuit for the semiconductor element only when the switching elements are simultaneously made conductive.
摘要翻译： 用于具有控制电极的半导体元件的控制电路包括信号传输电路，其中当控制信号通过信号绝缘元件从控制信号源提供给开关元件时，两个开关元件导通，这样， 只有当开关元件同时导通时，才将控制信号传送到半导体元件的导通电路。
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15.发明授权
公开(公告)号：US4384248A
公开(公告)日：1983-05-17
申请号：US160174
申请日：1980-06-17
申请人： Yasuo Matsuda , Kazuo Honda , Takeo Maeda
发明人： Yasuo Matsuda , Kazuo Honda , Takeo Maeda
CPC分类号： G01R31/025 , H02H7/1225
摘要： Shortcircuit in an arm including a series connection of GTO's and reactors of an inverter is detected by sensing a voltage across the reactor. In one method, the shortcircuit in the arm is detected when voltages are coincidently applied to a P-line arm reactor and an N-line arm reactor for a predetermined time period. In another method, it is detected when an integrated value of a voltage across at least one of the reactors exceeds a predetermined level.
摘要翻译： 通过感测反应堆两端的电压来检测包括GTO和逆变器的反应器的串联连接的臂中的短路。 在一种方法中，当预定时间段内的电压一致地施加到P线臂式电抗器和N型臂式电抗器时，检测到臂中的短路。 在另一种方法中，当跨过至少一个电抗器的电压的积分值超过预定电平时检测。
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公开(公告)号：US06850027B2
公开(公告)日：2005-02-01
申请号：US10389775
申请日：2003-03-18
摘要： The stepping motor driver comprises an inverter for feeding stepped currents to windings of a stepping motor, a position detector for obtaining a detected angle of a rotor of the stepping motor and a current controller for controlling the inverter. In a d-q rotational coordinate system in which the d-axis is in the direction of the magnetic flux of the rotor and the q-axis is in the direction perpendicular to the d-axis, an excitation angle for a winding is determined from a d-axis component and a q-axis component of a command current to the winding, a lead angle control signal is computed from the excitation angle, and a phase of an applied voltage to the stepping motor is controlled using the lead angle control signal.
摘要翻译： 步进电动机驱动器包括用于将步进电流馈送到步进电动机的绕组的逆变器，用于获得步进电动机的转子的检测角度的位置检测器和用于控制逆变器的电流控制器。 在d轴为转子磁通方向且q轴为d轴的方向的dq旋转坐标系中，绕组的励磁角由d 轴分量和对绕组的指令电流的q轴分量，从励磁角度计算引导角控制信号，并且使用引导角控制信号来控制对步进电机的施加电压的相位。
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公开(公告)号：US06546760B1
公开(公告)日：2003-04-15
申请号：US08674865
申请日：1996-07-03
申请人： Ichiro Tsuchiya , Kohei Kobayashi , Hiroaki Ohta , Kazuya Kuwahara , Katsuyuki Tsuneishi , Hideo Miyaki , Yasuo Matsuda
发明人： Ichiro Tsuchiya , Kohei Kobayashi , Hiroaki Ohta , Kazuya Kuwahara , Katsuyuki Tsuneishi , Hideo Miyaki , Yasuo Matsuda
IPC分类号： C03B37029
CPC分类号： C03B37/029 , C03B2205/63 , H05B3/145 , H05B3/44
摘要： There is provided an optical fiber drawing furnace capable of drawing an optical fiber having small non circularity, which drawing furnace includes a muffle tube, in which an optical fiber preform is supplied, a heater surrounding the muffle tube, a plurality of electrode connecting portion extending from the heater, a plurality of electrodes connected to electrode connecting portions, and in conjunction therewith to an electric power source, and unifying means for unifying the temperature distribution along the circumferential direction.
摘要翻译： 提供了一种能够拉伸小圆形光纤的光纤拉丝炉，该拉丝炉包括一个马弗管，其中提供了一个光纤预制棒，一个围绕马弗管的加热器，多个电极连接部分延伸 从加热器，连接到电极连接部分的多个电极，以及与电源连接的多个电极，以及用于统一沿着周向的温度分布的统一装置。
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公开(公告)号：US6078715A
公开(公告)日：2000-06-20
申请号：US96743
申请日：1998-06-12
申请人： Takashi Fujii , Yasuo Matsuda , Kazuki Sogabe , Takayuki Mishima
发明人： Takashi Fujii , Yasuo Matsuda , Kazuki Sogabe , Takayuki Mishima
CPC分类号： G02B6/02038 , G02B1/046 , G02B1/048 , G02B6/02042 , G02B6/03633 , G02B6/02276
摘要： This invention concerns a large-diameter optical fiber that is improved in the bandwidth and bending loss and that can be produced at low cost with higher productivity. The optical fiber comprises an inner core having a refractive index profile in which refractive indices increase toward the center axis thereof, an outer core provided outside the inner core and having a constant refractive index not more than the minimum refractive index of the inner core, and a cladding provided outside the outer core and containing a plastic material having a refractive index lower than that of the outer core. In the optical fiber, total refractive index difference (.DELTA.n.sub.total), defined as the difference between the maximum refractive index of the inner core and the refractive index of the cladding, is not less than 0.015 and not more than 0.1; and a outside core diameter of the outer core (d.sub.1) is not less than 100 .mu.m and not more than 500 .mu.m.
摘要翻译： 本发明涉及一种改善带宽和弯曲损耗的大直径光纤，并且可以以较低的成本生产出更高的生产率。 该光纤包括具有折射率分布的折射率分布的内芯，折射率折射率向其中心轴线增加，外芯设置在内芯的外侧，并且具有不大于内芯的最小折射率的恒定折射率，以及 包层，其设置在外芯的外侧，并且包含折射率低于外芯的折射率的塑料材料。 在光纤中，被定义为内芯的最大折射率与包层的折射率之间的差的总折射率差（DELTA n total）不小于0.015且不大于0.1; 并且外芯（d1）的外芯直径不小于100μm且不大于500μm。
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19.发明授权
公开(公告)号：US5916495A
公开(公告)日：1999-06-29
申请号：US837104
申请日：1997-04-14
CPC分类号： G02B6/02038 , B29C47/0026 , B29D11/00721 , G02B1/045 , G02B1/048 , B29C47/00 , B29C47/0021 , Y10T428/2933 , Y10T428/2991
摘要： A process is provided for producing a plastic optical fiber by drawing while melting an optical fiber preform under heating. The optical fiber preform includes at least a core containing an organic polymer and a cladding layer disposed on the outer circumference of the core and containing an organic polymer. The drawing is conducted under a drawing tension of 10 g or more, and preferably under a drawing tension of 100 g or less, until winding-up of the optical fiber.
摘要翻译： 提供了一种通过在加热下熔化光纤预制件的同时拉伸来制造塑料光纤的方法。 所述光纤预制体至少包含含有有机聚合物的芯和设置在所述芯的外周上并包含有机聚合物的包覆层。 在拉伸张力为10g以上，优选为100g以下的拉伸张力下进行拉伸，直到光纤卷绕。
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20.发明授权
公开(公告)号：US5639512A
公开(公告)日：1997-06-17
申请号：US381874
申请日：1995-02-16
CPC分类号： G02B6/02038 , B29C47/0026 , B29D11/00721 , G02B1/045 , G02B1/048 , B29C47/00 , B29C47/0021 , Y10T428/2933 , Y10T428/2991
摘要： A process and an apparatus for producing a preform for plastic optical fiber having a refractive index distribution in which the refractive index is gradually decreased from the center of the preform toward the outer periphery thereof, by depositing a deposition layer comprising a polymer A (refractive index: N.sub.a) and a refractive index modifier having a refractive index different from that of the polymer A onto a surface of a rod member rotating about an axis thereof, by use of vapor-phase deposition based on a CVD (Chemical Vapor Deposition) process, or a coating process. A plastic optical fiber preform comprising deposition layers having a gradually decreasing refractive index distribution is formed by changing the mixing ratio between the polymer A and the refractive index modifier constituting the deposition layer.
摘要翻译： PCT No.PCT / JP94 / 00962 Sec。 371日期1995年2月16日 102（e）日期1995年2月16日PCT提交1994年6月14日PCT公布。 公开号WO95 / 00868 日期1995年1月5日一种用于制造塑料光纤预制品的方法和装置，其具有折射率分布，其中折射率从预成型件的中心朝向其外周逐渐减小，通过沉积包含 聚合物A（折射率：Na）和折射率与聚合物A的折射率不同的折射率调节剂，通过使用基于CVD的气相沉积（化学品 气相沉积）工艺或涂层工艺。 通过改变构成沉积层的聚合物A和折射率调节剂之间的混合比，形成包含逐渐降低的折射率分布的沉积层的塑料光纤预制件。
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