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公开(公告)号：US4219277A
公开(公告)日：1980-08-26
申请号：US932234
申请日：1978-08-09
IPC分类号： G01N21/93 , G01N21/89 , G01N21/94 , G01N21/952 , G01N21/22
CPC分类号： G01N21/89
摘要： This invention is an improved method for scanning for flaws on a surface utilizing dynamic correction. Each individual scan signal is divided into a large number of increments, each increment representing a predetermined position in the scan. A dynamic average is computed for each of the scan positions and flaws are detected by comparing the increment signals to the dynamic average signal for the same position. This technique is especially useful to detect flaws on high quality tubing, such as used for nuclear reactor fuel rods or for nuclear reactor steam generator tubing.
摘要翻译： 本发明是利用动态校正扫描表面上的瑕疵的改进方法。 每个单独的扫描信号被分成大量的增量，每个增量表示扫描中的预定位置。 对于每个扫描位置计算动态平均值，并且通过将增量信号与相同位置的动态平均信号进行比较来检测缺陷。 这种技术特别适用于检测高质量管道上的缺陷，例如用于核反应堆燃料棒或核反应堆蒸汽发生器管道的缺陷。
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公开(公告)号：US4768848A
公开(公告)日：1988-09-06
申请号：US55580
申请日：1987-05-29
申请人： Eugene G. Vaerewyck
发明人： Eugene G. Vaerewyck
摘要： A fiber optic repeater comprising a substrate of electro-optically sensitive material and an optical waveguide formed in the surface of the substrate and extending between longitudinally opposite edge portions of the substrate. The waveguide includes longitudinally opposite end portions each having a terminal face exposed at one of the edge portions of the substrate and a pair of laterally spaced-apart central portions joined to each of the end portions. The waveguide propagates the optical signals between the exposed terminal faces. First and second data branches are formed in the surface of the substrate to divert a portion of the optical signal being propagated by the waveguide before the signal enters the central portions of the waveguide. Each data branch has a connecting portion extending from an end portion of the waveguide and an output end opposite the connecting portion. A photodetector is coupled to the output end of each data branch to detect the portion of the optical signals diverted by the respective data branch. A system including a plurality of optical repeaters each having the capability to receive data from and transmit data to an optical fiber data bus also is disclosed.
摘要翻译： 一种光纤中继器，包括电光敏材料基片和形成在基片表面上且在基片纵向相对边缘部分之间延伸的光波导。 波导包括纵向相对的端部，每个端部具有在基板的一个边缘部分处露出的端面和连接到每个端部的一对横向间隔开的中心部分。 波导在曝光的端子面之间传播光信号。 第一和第二数据分支形成在衬底的表面中，以在信号进入波导的中心部分之前转移由波导传播的光信号的一部分。 每个数据分支具有从波导的端部延伸的连接部分和与连接部分相对的输出端。 光电检测器耦合到每个数据分支的输出端，以检测由相应数据分支转移的光信号的部分。 公开了一种包括多个光中继器的系统，每个光中继器具有从光纤数据总线接收数据和发送数据的能力。
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3.发明授权Metal coated, tapered, optical fiber coupled to substrate and method of fabrication 失效金属涂层，锥形，耦合到基板的光纤和制造方法
公开(公告)号：US4445751A
公开(公告)日：1984-05-01
申请号：US312555
申请日：1981-10-19
CPC分类号： G02B6/30 , G02B6/4248 , G02F1/225 , G01B9/02 , Y10S359/90
摘要： The invention comprises an optical interferometer system utilizing optical fibers. Titanium is diffused into the surface of lithium niobate substrate to form an optical waveguide utilized by the interferometer. The central portion of the optical waveguide is divided into two substantially parallel sections. Grooves between and alongside the optical waveguide are etched into the surface of the lithium niobate to optically decouple the waveguide sections from each other and from the substrate. A first electrode is positioned between the parallel sections of the optical waveguide with second and third electrodes positioned alongside these sections. These electrodes are utilized to subject the optical waveguides to an electrical field to differentially modulate the velocity of optical energy in the parallel sections or waveguide in response to an electrical signal. This differential modulation of the velocity of optical energy permits enhancement of attenuation of the propagating light to develop in the waveguide. Along two edges of the optical interferometer, small shelves are formed in the ends of the substrate to expose the ends of optical waveguide. Optical fibers are tapered by selectively etching the cladding and the core. A metal layer is formed on the tapered portion of the cladding to prevent light from escaping from the optical fiber. Micro-positioners are utilized to position the exposed ends of the core adjacent the exposed ends of the waveguides and the optical fiber is affixed in this position with a material which adheres to both the optical fiber and the lithium niobate substrate.
摘要翻译： 本发明包括利用光纤的光学干涉仪系统。 钛分散在铌酸锂基板表面，形成干涉仪使用的光波导。 光波导的中心部分分成两个大致平行的部分。 在光波导之间和旁边的槽被蚀刻到铌酸锂的表面中，以使波导部分彼此和衬底光学去耦。 第一电极位于光波导的平行部分之间，其中第二和第三电极位于这些部分旁边。 这些电极用于使光波导对电场进行响应于电信号差分地调制并联部分或波导中的光能的速度。 这种光能速度的差分调制允许在波导中增强传播光的衰减。 沿着光学干涉仪的两个边缘，在基板的端部形成小的搁板以露出光波导的端部。 光纤通过选择性地蚀刻包层和芯而变细。 金属层形成在包层的锥形部分上，以防止光从光纤中逸出。 微定位器用于将芯的暴露端部定位在波导的暴露端附近，并且光纤通过粘附在光纤和铌酸锂基底上的材料固定在该位置。
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公开(公告)号：US4428017A
公开(公告)日：1984-01-24
申请号：US412368
申请日：1982-08-27
IPC分类号： G01R15/24 , G01R19/165 , H02H1/00 , H02H7/08
CPC分类号： G01R19/16571 , G01R15/246 , H02H1/0007 , H02H1/0069
摘要： A Faraday rotator optical sensor in combination with optical fiber transmission means is employed to monitor overload current conditions in a high voltage electrical load and transmit this information to a low voltage signal processing circuit while providing desired isolation between the high voltage load and the low voltage signal processing circuit.
摘要翻译： 采用与光纤传输装置相结合的法拉第旋转光学传感器来监视高压电气负载中的过载电流状况，并将该信息传送到低电压信号处理电路，同时提供高压负载和低电压信号之间的期望隔离 处理电路。
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公开(公告)号：US4363061A
公开(公告)日：1982-12-07
申请号：US158108
申请日：1980-06-10
IPC分类号： G01R15/24 , G01R19/165 , H02H1/00 , H02H7/085
CPC分类号： G01R19/16571 , G01R15/246 , H02H1/0007 , H02H1/0069
摘要： A Faraday rotator optical sensor in combination with optical fiber transmission means is employed to monitor overload current conditions in a high voltage electrical load and transmit this information to a low voltage signal processing circuit while providing desired isolation between the high voltage load and the low voltage signal processing circuit.
摘要翻译： 采用与光纤传输装置相结合的法拉第旋转光学传感器来监视高压电气负载中的过载电流状况，并将该信息传送到低电压信号处理电路，同时提供高压负载和低电压信号之间的期望隔离 处理电路。
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6.发明授权Faraday current sensor with fiber optic compensated by temperature, degradation, and linearity 失效带光纤的法拉第电流传感器由温度，退化和线性度补偿
公开(公告)号：US4613811A
公开(公告)日：1986-09-23
申请号：US647203
申请日：1984-09-04
CPC分类号： G01R15/246
摘要： A magneto-optical current sensor for measuring current flowing through a conductor, characterized by at least two components. One component is parallel to the direction of current flow and is proximate to a source of magnetic field. The other component is perpendicular to that direction and includes a surface in contact with said one component. One of the components having a reflective surface for reflecting a polarized light beam between components whereby a light signal is produced that is compensated for temperature, loop degradation, and linearity.
摘要翻译： 一种用于测量流过导体的电流的磁光电流传感器，其特征在于至少两个部件。 一个部件与电流的方向平行，并且靠近磁场源。 另一个部件垂直于该方向并且包括与所述一个部件接触的表面。 其中一个部件具有用于在部件之间反射偏振光束的反射表面，由此产生补偿温度，回路劣化和线性度的光信号。
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7.发明授权Temperature stabilized Faraday rotator current sensor by thermal mechanical means 失效温度稳定的法拉第旋转电流传感器采用热机械方式
公开(公告)号：US4612500A
公开(公告)日：1986-09-16
申请号：US647201
申请日：1984-09-04
CPC分类号： G01R19/15 , G01R15/246
摘要： Apparatus for measuring current in a conductor characterized by a magneto-optical current sensor employing the Faraday effect to measure current in a high voltage transmission line. Polarized light having a predetermined plane of polarization is directed into the sensor which plane of polarization is rotated by magnetic field lines generated by the current in the conductor. A bimetal coil rotates the sensor to achieve temperature stability of the current signal in the temperature range of -40.degree. C. to 140.degree. C.
摘要翻译： 用于测量导体中的电流的装置，其特征在于采用法拉第效应的磁光电流传感器来测量高压输电线路中的电流。 具有预定偏振面的偏振光被引导到传感器中，该极化平面通过由导体中的电流产生的磁场线旋转。 双金属线圈旋转传感器，以在-40℃至140℃的温度范围内实现电流信号的温度稳定性。
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公开(公告)号：US4474429A
公开(公告)日：1984-10-02
申请号：US354867
申请日：1982-03-04
CPC分类号： G02B6/245 , G02B6/30 , G02B6/4203
摘要： The invention comprises a method for coupling an optical fiber to an optical device. Ends of optical fibers are ion polished. Micro-manipulators are used to position the polished end in abutting relationship with the optical device. A liquid which contains glass constituents is used to coat the junction of the optical fiber and the optical device. The liquid is subjected to a temperature cycle which fuses the glass constituents to the optical fiber and to the optical device.
摘要翻译： 本发明包括一种将光纤耦合到光学装置的方法。 光纤末端被离子抛光。 微操纵器用于将抛光端定位成与光学装置邻接的关系。 含有玻璃成分的液体用于涂覆光纤和光学器件的结。 液体经受将玻璃成分熔合到光纤和光学装置的温度循环。
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公开(公告)号：US4211922A
公开(公告)日：1980-07-08
申请号：US956778
申请日：1978-11-01
CPC分类号： F24J2/38 , G01S3/7861 , Y02E10/47
摘要： Apparatus for positioning a mirror to reflect solar radiation from the sun onto a remote receiver. Two wide angle, preferably cylindrical lenses are positioned through the mirror, parallel to the reflective face of the mirror, with their optical axes at ninety degrees respectively corresponding to elevation and azimuth. Multi-element photosensors are rigidly affixed behind the mirror so that images of the sun and the receiver can be focused on the sensors. The sensors extend a length equivalent to the field of view through the respective lens encompassing the sun and receiver during the daily and seasonal apparent path of the sun. A selected element of each photosensor is positioned along a line representing the normal to the mirror surface through its corresponding lens. Electrical circuitry and drive apparatus utilize the signals from the photosensors representative of the images of the sun and receiver, and the distance of each image from the selected element, to position the mirror to reflect solar radiation onto the receiver. The mirror is properly oriented where the images are equidistant from the selected element representing the normal. The image of the receiver can be formed by radiation reflected from the receiver back toward the mirror or by additional apparatus such as a steady or pulsed light source.
摘要翻译： 用于定位反射镜以将来自太阳的太阳辐射反射到远程接收器上的装置。 两个广角，优选圆柱形透镜通过反射镜定位，平行于反射镜的反射面，其光轴分别对应于仰角和方位角九十度。 多元素光电传感器刚性地固定在镜子后面，使得太阳和接收器的图像可以聚焦在传感器上。 这些传感器通过在太阳和季节的日常和季节性明显路径期间包围太阳和接收器的相应透镜延伸相当于视野的长度。 每个光电传感器的选定元件通过其对应的透镜沿着表示镜面的法线的线定位。 电路和驱动装置利用来自代表太阳和接收器的图像的光电传感器的信号和来自所选元件的每个图像的距离，以定位反射镜以将太阳辐射反射到接收器上。 镜像是正确定向的，其中图像与所选元素的等距离表示法线。 接收器的图像可以由从接收器反射回镜子或通过诸如稳定或脉冲光源的附加装置的辐射形成。
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