公开(公告)号：US09429473B2

公开(公告)日：2016-08-30

申请号：US14515852

申请日：2014-10-16

Applicant: Joseph R. Demers

Inventor： Bryon L. Kasper ,  Joseph R. Demers

IPC: G01J5/02 ,  G01J3/433 ,  G01J3/10

CPC classification number: G01J3/4338 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433

Abstract: Highly advantageous spectrometer systems and associated methods are disclosed which utilize phase modulation in conjunction with first and second harmonic detection to reduce or eliminate negative impacts from interference patterns.

Abstract translation: 公开了高效益的光谱仪系统和相关方法，其利用与第一和第二谐波检测结合的相位调制来减少或消除干扰图案的负面影响。

公开(公告)号：US20160169748A1

公开(公告)日：2016-06-16

申请号：US14968289

申请日：2015-12-14

Applicant: BEIHANG UNIVERSITY

Inventor： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC: G01J11/00 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

Abstract: A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

Abstract translation: 一种用于测量光学异步采样信号的方法和系统。 用于测量光学异步采样信号的系统包括能够发射具有不同重复频率的两个光脉冲序列的脉冲光源，信号光路，参考光路和检测装置。 由于可以通过仅使用一个脉冲光源来测量光学异步采样信号，所以系统的复杂性和成本降低。 进一步公开了使用脉冲光源的多频光梳系统和实现多频光梳的方法。

公开(公告)号：US20160146667A1

公开(公告)日：2016-05-26

申请号：US14904440

申请日：2014-07-13

Applicant: B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD. (BEN-GURION UNIVERSITY)

Inventor： Yitzhak AUGUST ,  Adrian STERN ,  Dan G. BLUMBERG ,  Stanley R. ROTMAN

IPC: G01J3/433 ,  G01J3/26

CPC classification number: G01J3/433 ,  G01J3/1256 ,  G01J3/26 ,  H03M7/3062

Abstract: A spectroscopic method using either tunable or preset non-tunable thin-layered devices or a combination of both to modulate compressed-sensing-compliant, spectral modulations and to use intensity measurements of each respective spectral modulation to numerically reconstruct an estimated spectral distribution of the spectral signal such that the estimated spectral distribution is characterized by a totality of spectral bands exceeding the number of spectral modulations by about one half an order-of-magnitude or more.

Abstract translation: 使用可调谐或预设的不可调薄层器件或两者的组合的光谱方法来调制压缩感测兼容性，光谱调制并且使用每个相应光谱调制的强度测量来数值地重建光谱的估计光谱分布 信号，使得估计的频谱分布的特征在于频谱带的总数超过频谱调制的数量大约一个数量级或更多的数量级。

公开(公告)号：US20160084760A1

公开(公告)日：2016-03-24

申请号：US14860712

申请日：2015-09-22

Applicant: Mohamad Haidar Shahine

Inventor： Mohamad Haidar Shahine

IPC: G01N21/59 ,  G01N33/00

CPC classification number: G01N33/004 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/007 ,  G01N2021/1795 ,  G01N2201/12

Abstract: A system and method to accurately estimate the strength and changes of the monitoring signal for sensing applications, this invention involves the monitoring of signal strength and changes through the use of a pseudorandom binary sequence bit stream to modulate the transmitter of a data link, when beating the transmitter signal with absorption structure signal from the sensor at the receiver, the changes in the received signal strength are proportional to the sensing signal being monitored. The received signal bit pattern is monitored by an error detector scheme to report a Bit Error Rate level based on the changes in the sensing signal level as compared to the bit stream from the transmitter. This results in a very accurate robust monitoring technique with high consistency and repeatability.

Abstract translation: 一种准确地估计用于感测应用的监测信号的强度和变化的系统和方法，本发明涉及通过使用伪随机二进制序列比特流来监视信号强度和变化，以便在跳动时对数据链路的发射机进行调制 具有来自接收机处的传感器的吸收结构信号的发射机信号，接收信号强度的变化与被监测的感测信号成比例。 接收到的信号位模式由误差检测器方案监视，以便与来自发射机的比特流相比，基于感测信号电平的变化来报告误码率电平。 这导致具有高一致性和重复性的非常精确的鲁棒监控技术。

公开(公告)号：US20160047739A1

公开(公告)日：2016-02-18

申请号：US14823248

申请日：2015-08-11

Applicant: Siemens Aktiengesellschaft

Inventor： Ralf BITTER

IPC: G01N21/31 ,  G01N33/00

CPC classification number: G01N21/31 ,  G01J3/433 ,  G01N21/3504 ,  G01N21/39 ,  G01N33/0073 ,  G01N2201/061

Abstract: Absorption spectrometer and method for measuring the concentration of a gaseous component of interest in a measurement gas, wherein to compensate influence of changes in an optical path length in the absorption spectrometer on a measured result, light from the laser is modulated with at least one pilot frequency in the MHz range, the measurement signal is analyzed in a phase-sensitive manner for the pilot frequency, phase information obtained during this analysis is compared with phase information obtained during calibration of the absorption spectrometer, where the measured result is corrected as a function of the difference between the two items of phase information. Alternatively, light from the laser is modulated with two pilot frequencies, where signal components contained in the measurement signal with the pilot frequencies are detected in a phase-sensitive manner and the difference between the phase information of the two signal components obtained in this operation is analyzed.

Abstract translation: 吸收光谱仪和测量气体中感兴趣的气体组分的浓度的方法，其中为了补偿吸收光谱仪中的光程长度的变化对测量结果的影响，来自激光的光由至少一个导频 频率在MHz范围内，以导频的相敏方式分析测量信号，将在该分析期间获得的相位信息与在吸收光谱仪的校准期间获得的相位信息进行比较，其中测量结果被校正为函数 的两个相位信息之间的区别。 或者，来自激光器的光由两个导频调制，其中包含在具有导频的测量信号中的信号分量以相敏性方式被检测，并且在该操作中获得的两个信号分量的相位信息之间的差为 分析

公开(公告)号：US09255880B2

公开(公告)日：2016-02-09

申请号：US14143069

申请日：2013-12-30

Applicant: Electric Power Research Institute, Inc.

Inventor： Neal Scott Murray

IPC: G01J5/02 ,  G01N21/55 ,  G01J5/08

CPC classification number: G01N21/55 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/10 ,  G01J3/427 ,  G01J3/433 ,  G01J5/0853 ,  G01J2001/4242 ,  G01N17/006 ,  G01N21/31 ,  G01N21/952

Abstract: An apparatus and method for evaluating power transmission conductors is disclosed. The apparatus is configured to evaluate a charged power transmission conductor at a distance and includes a telescope assembly configured to transmit light to the conductor and receive a reflected light, in response to the transmitted light, from the conductor. The apparatus further includes control electronics configured to analyze the reflected light and determine a ratio based on two pre-determined frequencies, wherein the ratio is correlated with levels of iron oxide corrosion to confirm the presence of oxides that have leached through strands of the conductor.

Abstract translation: 公开了用于评估输电导体的装置和方法。 该装置被配置为在一定距离处评估带电的电力传输导体，并且包括望远镜组件，该望远镜组件被配置为响应于来自导体的透射光而将光透射到导体并接收反射光。 该装置还包括配置成分析反射光并基于两个预定频率确定比率的控制电子设备，其中该比率与氧化铁腐蚀的水平相关，以确认通过导体的股线浸出的氧化物的存在。

公开(公告)号：US09250128B2

公开(公告)日：2016-02-02

申请号：US14382333

申请日：2013-03-01

Applicant: BEIHANG UNIVERSITY

Inventor： Zheng Zheng ,  Xin Zhao ,  Lei Liu ,  Jiansheng Liu

IPC: G01J5/20 ,  G01J3/10 ,  G01J3/42 ,  G01J3/447

CPC classification number: G01J11/00 ,  G01J1/10 ,  G01J3/0224 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/108 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447 ,  G02F1/353 ,  G02F1/365 ,  G02F1/37 ,  G02F2203/13 ,  H01S3/0092 ,  H01S3/06791 ,  H01S3/0809 ,  H01S3/1106 ,  H01S3/1112 ,  H01S3/2391

Abstract: A method and a system for measuring an optical asynchronous sample signal. The system for measuring an optical asynchronous sampling signal comprises a pulsed optical source capable of emitting two optical pulse sequences with different repetition frequencies, a signal optical path, a reference optical path, and a detection device. Since the optical asynchronous sampling signal can be measured by merely using one pulsed optical source, the complexity and cost of the system are reduced. A multi-frequency optical comb system using the pulsed optical source and a method for implementing the multi-frequency optical comb are further disclosed.

公开(公告)号：US09212948B2

公开(公告)日：2015-12-15

申请号：US14074554

申请日：2013-11-07

Applicant: The Trustees of Columbia University in the City of New York

Inventor： Dirk R. Englund

IPC: G01J3/28 ,  G01J3/433 ,  G01J3/02

CPC classification number: G01J3/2823 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/433

Abstract: Techniques for hyperspectral imaging using a spatial light modulator having a plurality of pixels, including encoding electromagnetic radiation incident a first pixel at a first location and a second pixel at a second location into a first modulated signal having a first modulation frequency and a second modulated signal having a second modulation frequency, the first modulation frequency being different than the second modulation frequency. A sum of intensities of at least the first modulated signal and the second modulated signal is measured at a plurality of optical frequencies and a transform is applied to the sum to obtain an intensity of electromagnetic radiation incident each of the first location and the second location for each of the plurality of optical frequencies.

Abstract translation: 使用具有多个像素的空间光调制器进行超光谱成像的技术，包括将入射到第一位置处的第一像素的电磁辐射和在第二位置处的第二像素编码为具有第一调制频率和第二调制信号的第一调制信号 具有第二调制频率，第一调制频率不同于第二调制频率。 在多个光频率下测量至少第一调制信号和第二调制信号的强度之和，并且对该和进行变换以获得入射到第一位置和第二位置中的每一个的电磁辐射的强度 每个光频率。

公开(公告)号：US09157793B2

公开(公告)日：2015-10-13

申请号：US14712717

申请日：2015-05-14

Applicant: Halliburton Energy Services, Inc.

Inventor： Michael Pelletier ,  William Soltmann ,  David L. Perkins ,  Christopher M. Jones

IPC: G01N21/00 ,  G01J1/08 ,  G01V8/12 ,  G01N21/59

CPC classification number: G01J1/08 ,  E21B47/102 ,  E21B49/08 ,  G01J3/0205 ,  G01J3/027 ,  G01J3/10 ,  G01J3/108 ,  G01J3/427 ,  G01J3/433 ,  G01J5/522 ,  G01N21/31 ,  G01N21/59 ,  G01N21/64 ,  G01N21/65 ,  G01N2021/3155 ,  G01N2201/022 ,  G01N2201/061 ,  G01N2201/06186 ,  G01V8/12

Abstract: A light source and a method for its use in an optical sensor are provided, the light source including a resistively heated element. The light source includes a power circuit configured to provide a pulse width modulated voltage to the resistively heated element, the pulse width modulated voltage including: a duty cycle with a first voltage; and a pulse period including a period with a second voltage, wherein: the duty cycle, the first voltage, and the pulse period are selected so that the resistively heated element is heated to a first temperature; and the first temperature is selected to emit black body radiation in a continuum spectral range. Also provided is an optical sensor for determining a chemical composition including a light source as above.

Abstract translation: 提供了一种用于光学传感器的光源及其方法，该光源包括电阻加热元件。 光源包括被配置为向电阻加热元件提供脉宽调制电压的电源电路，所述脉宽调制电压包括：具有第一电压的占空比; 以及包括具有第二电压的周期的脉冲周期，其中：选择占空比，第一电压和脉冲周期，使得电阻加热元件被加热到第一温度; 并且选择第一温度以在连续光谱范围内发射黑体辐射。 还提供了一种用于确定包括如上所述的光源的化学成分的光学传感器。

公开(公告)号：US20150268095A1

公开(公告)日：2015-09-24

申请号：US14662307

申请日：2015-03-19

Applicant: Servomex Group Limited

Inventor： Richard P. Kovacich ,  Bahram Alizadeh ,  Ian C. Gaskin ,  James D. Hobby ,  Martin Lopez

IPC: G01J3/02 ,  G01N21/39

CPC classification number: G01J3/027 ,  G01J3/0297 ,  G01J3/10 ,  G01J3/433 ,  G01J2003/423 ,  G01N21/274 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/121 ,  G01N2201/1215

Abstract: A method and system for correcting the effect of intensity fluctuations of the transmitted light in an absorption spectroscopy system used for the detection or measurement of chemical species in a medium, whereby one or more modulation bursts are imposed onto a light beam that passes through the medium. This burst signal may be obtained by modulating the bias current of a tunable diode laser, and the modulation burst signal may be optimally at the second harmonic of the modulation frequency of a wavelength modulated beam to allow usage of the same signal path processing used for the spectroscopic detection of the measurand for a second harmonic detection system. The burst signal can be controlled using a smooth window function to minimise the effects of non-linear perturbations that are inherent in tunable diode laser wavelength modulation spectroscopy systems, of optical interference fringes (etalons) and of the residual light absorption by background chemical species or the measurand at the wavelength coinciding with the modulation burst.

Abstract translation: 一种用于校正用于检测或测量介质中的化学物质的吸收光谱系统中的透射光的强度波动的影响的方法和系统，由此一个或多个调制脉冲串被施加到通过介质的光束 。 可以通过调制可调谐二极管激光器的偏置电流来获得该脉冲串信号，并且调制脉冲串信号可以在波长调制波束的调制频率的二次谐波处最佳地进行，以允许使用与 用于二次谐波检测系统的被测量的光谱检测。 可以使用平滑窗函数来控制突发信号，以最小化可调谐二极管激光波长调制光谱系统固有的非线性扰动，光学干涉条纹（标准具）和背景化学物质的残余光吸收的影响， 在波长上的被测量与调制脉冲串一致。