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51. 发明申请

US20070210790A1 System And Method For Characterizing A Sample By Low-Frequency Spectra 审中-公开
标题翻译：通过低频光谱表征样品的系统和方法
公开(公告)号：US20070210790A1
公开(公告)日：2007-09-13
申请号：US10575182
申请日：2004-10-08
申请人： Bennette Butters , Patrick Naughton , Michael Leonard , Demetrios Voreades , Marcio de Andrade
发明人： Bennette Butters , Patrick Naughton , Michael Leonard , Demetrios Voreades , Marcio de Andrade
IPC分类号： G01R33/02
CPC分类号： G01N37/005 , G01R33/032
摘要： A method and apparatus for interrogating a sample that exhibits molecular rotation are disclosed. In practicing the method, the sample is placed in a container having both magnetic and electromagnetic shielding, and Gaussian noise is injected into the sample. An electromagnetic time-domain signal composed of sample source radiation superimposed on the injected Gaussian noise is detected, and this signal is used to generate a spectral plot that displays, at a selected power setting of the Gaussian noise source, low-frequency spectral components characteristic of the sample in a selected frequency range between DC and 50 kHz. In one embodiment, the spectral plot that is generated is a histogram of stochastic resonance events over the selected frequency range. From this spectrum, one or more low-frequency signal components that are characteristic of the sample being interrogated are identified.
摘要翻译：公开了一种询问显示分子旋转的样品的方法和装置。在实施该方法时，将样品置于具有磁屏蔽和电磁屏蔽的容器中，并将高斯噪声注入样品。检测由叠加在注入的高斯噪声上的样本源辐射组成的电磁时域信号，并且该信号用于产生在高斯噪声源的选定功率设置下显示低频频谱分量特征的频谱图的样品在DC和50 kHz之间的选定频率范围内。在一个实施例中，所生成的光谱图是在所选择的频率范围上的随机共振事件的直方图。从该频谱中，识别出被询问的样品的特征的一个或多个低频信号分量。

52. 发明申请

US20060126990A1 Magneto-optical sensors 失效
标题翻译：磁光传感器
公开(公告)号：US20060126990A1
公开(公告)日：2006-06-15
申请号：US11010530
申请日：2004-12-13
申请人： Kung-Li Deng , Glenn Forman
发明人： Kung-Li Deng , Glenn Forman
IPC分类号： G02B6/26
CPC分类号： G01R33/032 , G01R15/245
摘要： A system for estimating a parameter selected from the group consisting of a current, a magnetic field, or combinations thereof comprises a resonant frequency tunable magneto-optical loop resonator, wherein the loop resonator comprises a magneto-optical sensing element coupled to an optical waveguide, and wherein the loop resonator is configured for receiving an originating optical signal from a broadband light source and providing a modulated signal indicative of the estimated parameter.
摘要翻译：用于估计从由电流，磁场或其组合组成的组中选择的参数的系统包括谐振频率可调谐磁光环路谐振器，其中环路谐振器包括耦合到光波导的磁光感测元件，并且其中所述环路谐振器被配置为从宽带光源接收始发光信号并且提供指示所述估计参数的调制信号。

53. 发明申请

US20040183530A1 System and method for characterizing a sample by low-frequency spectra 有权
标题翻译：通过低频谱表征样品的系统和方法
公开(公告)号：US20040183530A1
公开(公告)日：2004-09-23
申请号：US10683875
申请日：2003-10-09
发明人： Bennett M. Butters , Patrick Naughton , Michael Leonard
IPC分类号： G01R033/02
CPC分类号： G01N37/005 , G01R33/032
摘要： A method and apparatus for interrogating a sample that exhibits molecular rotation are disclosed. In practicing the method, the sample is placed in a container having both magnetic and electromagnetic shielding, and Gaussian noise is injected into the sample. An electromagnetic time-domain signal composed of sample source radiation superimposed on the injected Guassian noise is detected, and this signal is used to generate a spectral plot that displays, at a selected power setting of the Gaussian noise source, low-frequency spectral components characteristic of the sample in a selected frequency range between DC and 50 kHz. In one embodiment, the spectral plot that is generated is a histogram of stochastic resonance events over the selected frequency range. From this spectrum, one or more low-frequency signal components that are characteristic of the sample being interrogated are identified.
摘要翻译：公开了一种询问显示分子旋转的样品的方法和装置。在实施该方法时，将样品置于具有磁屏蔽和电磁屏蔽的容器中，并将高斯噪声注入样品。检测由叠加在注入的Guassian噪声上的样本源辐射组成的电磁时域信号，并且该信号用于产生在高斯噪声源的选定功率设置下显示低频频谱分量特征的频谱图的样品在DC和50 kHz之间的选定频率范围内。在一个实施例中，所生成的光谱图是在所选择的频率范围上的随机共振事件的直方图。从该频谱中，识别出被询问的样品的特征的一个或多个低频信号分量。

54. 发明申请

US20030173960A1 Method for measuring magnetic field based on electro-optic probing technique and measuring electric field based on magnetic probing technique 有权
标题翻译：基于电光探测技术测量磁场的方法和基于磁探测技术的电场测量方法
公开(公告)号：US20030173960A1
公开(公告)日：2003-09-18
申请号：US10100382
申请日：2002-03-18
申请人： Precision Instrument Development Center, National Science Council
发明人： Kuen-Wey Shieh
IPC分类号： G01R033/02
CPC分类号： G01R33/032
摘要： The present invention provides a method for measuring both magnetic and electric fields of a DUT via an electro-optic probing technique at the same time. Also, the present invention provides a method for measuring both electric and magnetic fields via a magneto-optic probing technique simultaneously. The method utilizes the modulation of the position of a probe to measure the electric and magnetic field signals. The DC and AC components of the modulated electric (or magnetic) field signals can be obtained by means of a low pass filter and a lock-in amplifier, respectively. Through a simple calculation, the electric and magnetic field can be obtained simultaneously.
摘要翻译：本发明提供了一种通过电光探测技术同时测量DUT的磁场和电场的方法。此外，本发明提供了一种通过磁光探测技术同时测量电场和磁场的方法。该方法利用探针位置的调制来测量电场和磁场信号。调制电（或磁）场信号的直流和交流分量可分别通过低通滤波器和锁相放大器获得。通过简单的计算，可以同时获得电场和磁场。

55. 发明授权

US5278499A Fiberoptic apparatus for measuring electromagnetic field intensity with an electro-optic sensor 失效
标题翻译：光电传感器测量电磁场强度的光纤设备
公开(公告)号：US5278499A
公开(公告)日：1994-01-11
申请号：US787791
申请日：1991-11-04
申请人： Hiroshi Ito , Tadashi Ichikawa , Satoru Kato
发明人： Hiroshi Ito , Tadashi Ichikawa , Satoru Kato
IPC分类号： G01R15/24 , G01R29/08 , G01R33/032 , G02B6/34 , G01R33/02 , G01D5/34 , G02B5/14 , H01J5/16
CPC分类号： G01R33/032 , G01R29/0885
摘要： An electromagnetic field intensity measuring apparatus comprises a sensor located in the electromagnetic field measuring place for receiving the measuring light from the optical fiber, the sensor being adapted to modulate the measuring light entering the sensor depending on the intensity of the electromagnetic field, the modulated light being then re-applied to the optical fiber; a polarization rotating device located between the measuring light generating device and the optical fiber, the polarization rotation device being operative to cause the polarized wavefront of the measuring light passed therethrough to rotate a given angle in the direction of passage; and a polarization beam splitter disposed between the measuring light generating device and the polarization rotating device, the polarization beam splitter being operative to permit only the measuring light from said measuring light generating device to pass through said polarization beam splitter and also to reflect the modulated measuring light inputted through the polarization rotating device in a predetermined direction. The electromagnetic field intensity in the measuring place can be calculated, based on the amplitude of the measuring light reflected by the polarization beam splitter.
摘要翻译：电磁场强度测量装置包括位于电磁场测量位置的传感器，用于接收来自光纤的测量光，该传感器适于根据电磁场的强度调制进入传感器的测量光，调制光然后再次应用于光纤; 位于所述测量光产生装置和所述光纤之间的偏振旋转装置，所述偏振旋转装置可操作以使通过的测量光的偏振波前沿通过方向旋转给定的角度; 以及设置在所述测量光产生装置和所述偏振旋转装置之间的偏振分束器，所述偏振分束器用于仅允许来自所述测量光产生装置的测量光通过所述偏振分束器并且还将所述调制测量通过偏振旋转装置沿预定方向输入的光。可以根据由偏振分束器反射的测量光的振幅来计算测量场所的电磁场强度。

56. 发明授权

US5119024A Optical device for sensing magnetic inductions 失效
标题翻译：用于感应磁感应的光学装置
公开(公告)号：US5119024A
公开(公告)日：1992-06-02
申请号：US664865
申请日：1991-03-05
申请人： Radivoje Popovic , Beat Halg , Thomas Seitz , Walter Trachslin
发明人： Radivoje Popovic , Beat Halg , Thomas Seitz , Walter Trachslin
IPC分类号： G01R15/24 , G01R33/032 , G01R33/038
CPC分类号： G01R33/032
摘要： A device for measuring a magnetic induction comprises an evaluation device including a source for emitting light and a receiver for receiving light. A resonator is located in the light path between the source and the receiver and comprises first and second parallel mirrors and a gaseous medium occupying the space between the two mirrors. A converter is coupled to one of the mirrors for shifting one of said mirrors along an optical axis of the resonator so that the optical length of the resonator varies in response to the induction to be measured.
摘要翻译：用于测量磁感应的装置包括评估装置，其包括用于发射光的源和用于接收光的接收器。谐振器位于源和接收器之间的光路中，并且包括第一和第二平行反射镜以及占据两个反射镜之间的空间的气体介质。 A转换器耦合到一个反射镜，用于沿着谐振器的光轴移动所述反射镜中的一个，使得谐振器的光学长度响应于待测量的感应而变化。

57. 发明授权

US4806858A Liquid crystal nondestructive inspection of magnetization and variations in magnetization of high energy magnets 失效
标题翻译：高能磁体的磁化和磁化变化的液晶非破坏性检查
公开(公告)号：US4806858A
公开(公告)日：1989-02-21
申请号：US76039
申请日：1987-07-21
申请人： Janean M. Elbicki
发明人： Janean M. Elbicki
IPC分类号： G01R33/032 , G02F1/13 , G01N27/74 , G01R33/12
CPC分类号： G02F1/1313 , G01R33/032
摘要： A method for coupling liquid crystals and a magnetic field to monitor changes in local magnetic properties (e.g., direction of magnetization) is provided. A magneto-optical sensor is used to detect and observe inhomogenieties, impurity phases, of a high energy magnet by monitoring the response of liquid crystals to a magnetic and/or electric field applied perpendicular or antiparallel to the magnetic field supplied by the magnet. The intensity of field necessary to cause a rotation of the liquid crystals in the direction of the applied field, and hence a modification of the optical properties of the liquid crystals, can be used as a rapid, inexpensive quality control test for batch magnet fabrication. The method can be applied to both thin films and bulk specimens. The magnetically weak spots of the sample can be mapped out by noting the appearance of dark and light regions as the liquid crystals are rotated into positions which obscure the illuminating light. Pleochroic dyes, which are long, cylindrically-shaped molecules containing chromophoric groups, can be used to increase the contrast and thus sensitivity of the method since the angle formed between the path of illuminating light and the axis of the pleochroic material determines the color reflected.
摘要翻译：提供了一种用于耦合液晶和磁场以监测局部磁特性（例如磁化方向）的变化的方法。磁光传感器用于通过监测液晶对垂直或反平行于由磁体提供的磁场施加的磁场和/或电场的响应来检测和观察高能磁体的不均匀相，杂质相。可以使用使液晶在施加场的方向上旋转所必需的强度，并因此改变液晶的光学性质，作为批量磁体制造的快速，便宜的质量控制试验。该方法可应用于薄膜和散装试样。当液晶旋转到遮蔽照明光的位置时，可以通过注意暗区和亮区的外观来绘制样品的磁弱点。由于在照明光的路径与双色性材料的轴线之间形成的角度决定了反射的颜色，所以可以使用长色谱的含有发色基团的多色染料来增加对比度和方法的灵敏度。

58. 发明授权

US2900595A Magnetic field detector 失效
公开(公告)号：US2900595A
公开(公告)日：1959-08-18
申请号：US53185455
申请日：1955-08-31
申请人： MENGEL CLARE L , MILES DICKERSON P
发明人： MENGEL CLARE L , MILES DICKERSON P
IPC分类号： G01R33/032
CPC分类号： G01R33/032

59. 发明申请

US20180340987A1 Packages For Coil Actuated Position Sensors 审中-公开
公开(公告)号：US20180340987A1
公开(公告)日：2018-11-29
申请号：US15606262
申请日：2017-05-26
申请人： Allegro MicroSystems, LLC
发明人： Alexander Latham , Michael C. Doogue , Jason Boudreau
IPC分类号： G01R33/00 , G01R33/025 , H01F5/04
CPC分类号： G01R33/0094 , G01R33/0005 , G01R33/0011 , G01R33/0017 , G01R33/0029 , G01R33/025 , G01R33/032 , G01R33/1284 , H01F5/04
摘要： An apparatus comprises one or more substrates and one or more coils. At least one of the coils is configured to produce a first magnetic field that induces eddy currents in a conductive target, which generates a reflected magnetic field. One or more magnetic field sensing elements supported by the one or more substrates detect the reflected magnetic field. A conductive support structure supports the one or more substrates. The support structure includes a gap in an area adjacent to the one or more coils so that the support structure does not generate a reflected magnetic field in response to the first magnetic field.

60. 发明申请

US20180275224A1 GENERATION OF MAGNETIC FIELD PROXY THROUGH RF FREQUENCY DITHERING 审中-公开
公开(公告)号：US20180275224A1
公开(公告)日：2018-09-27
申请号：US15468410
申请日：2017-03-24
申请人： Lockheed Martin Corporation
发明人： Arul Manickam , Gregory Scott Bruce , William Gnadt
IPC分类号： G01R33/26 , G01R33/60 , G01R33/032
CPC分类号： G01R33/26 , G01N24/10 , G01R33/032
摘要： Methods, apparatuses, and systems for creating a proxy magnetic reference signal by frequency modulating a desired magnetic field proxy modulation onto an RF wave. A RF pulse sequence for an RF excitation source to apply a RF field to the magneto-optical defect center material can be based on a magnetic field proxy modulation and a base RF wave. The magnetic field proxy modulation can be indicative of a proxy magnetic field. A magnetic field measurement from a magneto-optical defect center material can be detected using the optical sensor and can include a proxy magnetic field based on the magnetic field proxy modulation.

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